Relocate platform specific drivers (#13894)
* Relocate platform specific drivers * Move stm eeprom * Tidy up slightly
This commit is contained in:
Joel Challis
GitHub
parent
483691dd73
commit
1bb7af4d44
41 changed files with 5 additions and 5 deletions
138
platforms/avr/drivers/analog.c
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138
platforms/avr/drivers/analog.c
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/* Copyright 2015 Jack Humbert
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <avr/io.h>
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#include <avr/pgmspace.h>
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#include <stdint.h>
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#include "analog.h"
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static uint8_t aref = ADC_REF_POWER;
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void analogReference(uint8_t mode) { aref = mode & (_BV(REFS1) | _BV(REFS0)); }
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// Arduino compatible pin input
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int16_t analogRead(uint8_t pin) {
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#if defined(__AVR_ATmega32U4__)
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// clang-format off
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static const uint8_t PROGMEM pin_to_mux[] = {
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//A0 A1 A2 A3 A4 A5
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//F7 F6 F5 F4 F1 F0
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0x07, 0x06, 0x05, 0x04, 0x01, 0x00,
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//A6 A7 A8 A9 A10 A11
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//D4 D7 B4 B5 B6 D6
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0x20, 0x22, 0x23, 0x24, 0x25, 0x21
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};
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// clang-format on
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if (pin >= 12) return 0;
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return adc_read(pgm_read_byte(pin_to_mux + pin));
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#elif defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB647__) || defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB1287__) || defined(__AVR_ATmega328P__) || defined(__AVR_ATmega328__)
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if (pin >= 8) return 0;
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return adc_read(pin);
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#else
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return 0;
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#endif
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}
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int16_t analogReadPin(pin_t pin) { return adc_read(pinToMux(pin)); }
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uint8_t pinToMux(pin_t pin) {
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switch (pin) {
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// clang-format off
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#if defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB647__) || defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB1287__)
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case F0: return 0; // ADC0
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case F1: return _BV(MUX0); // ADC1
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case F2: return _BV(MUX1); // ADC2
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case F3: return _BV(MUX1) | _BV(MUX0); // ADC3
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case F4: return _BV(MUX2); // ADC4
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case F5: return _BV(MUX2) | _BV(MUX0); // ADC5
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case F6: return _BV(MUX2) | _BV(MUX1); // ADC6
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case F7: return _BV(MUX2) | _BV(MUX1) | _BV(MUX0); // ADC7
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default: return _BV(MUX4) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1) | _BV(MUX0); // 0V
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#elif defined(__AVR_ATmega16U4__) || defined(__AVR_ATmega32U4__)
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case F0: return 0; // ADC0
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case F1: return _BV(MUX0); // ADC1
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case F4: return _BV(MUX2); // ADC4
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case F5: return _BV(MUX2) | _BV(MUX0); // ADC5
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case F6: return _BV(MUX2) | _BV(MUX1); // ADC6
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case F7: return _BV(MUX2) | _BV(MUX1) | _BV(MUX0); // ADC7
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case D4: return _BV(MUX5); // ADC8
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case D6: return _BV(MUX5) | _BV(MUX0); // ADC9
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case D7: return _BV(MUX5) | _BV(MUX1); // ADC10
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case B4: return _BV(MUX5) | _BV(MUX1) | _BV(MUX0); // ADC11
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case B5: return _BV(MUX5) | _BV(MUX2); // ADC12
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case B6: return _BV(MUX5) | _BV(MUX2) | _BV(MUX0); // ADC13
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default: return _BV(MUX4) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1) | _BV(MUX0); // 0V
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#elif defined(__AVR_ATmega32A__)
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case A0: return 0; // ADC0
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case A1: return _BV(MUX0); // ADC1
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case A2: return _BV(MUX1); // ADC2
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case A3: return _BV(MUX1) | _BV(MUX0); // ADC3
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case A4: return _BV(MUX2); // ADC4
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case A5: return _BV(MUX2) | _BV(MUX0); // ADC5
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case A6: return _BV(MUX2) | _BV(MUX1); // ADC6
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case A7: return _BV(MUX2) | _BV(MUX1) | _BV(MUX0); // ADC7
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default: return _BV(MUX4) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1) | _BV(MUX0); // 0V
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#elif defined(__AVR_ATmega328P__) || defined(__AVR_ATmega328__)
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case C0: return 0; // ADC0
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case C1: return _BV(MUX0); // ADC1
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case C2: return _BV(MUX1); // ADC2
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case C3: return _BV(MUX1) | _BV(MUX0); // ADC3
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case C4: return _BV(MUX2); // ADC4
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case C5: return _BV(MUX2) | _BV(MUX0); // ADC5
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// ADC7:6 not present in DIP package and not shared by GPIO pins
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default: return _BV(MUX3) | _BV(MUX2) | _BV(MUX1) | _BV(MUX0); // 0V
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#endif
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// clang-format on
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}
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return 0;
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}
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int16_t adc_read(uint8_t mux) {
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uint16_t low;
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// Enable ADC and configure prescaler
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ADCSRA = _BV(ADEN) | ADC_PRESCALER;
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#if defined(__AVR_ATmega16U4__) || defined(__AVR_ATmega32U4__)
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// High speed mode and ADC8-13
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ADCSRB = _BV(ADHSM) | (mux & _BV(MUX5));
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#elif defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB647__) || defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB1287__)
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// High speed mode only
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ADCSRB = _BV(ADHSM);
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#endif
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// Configure mux input
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#if defined(MUX4)
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ADMUX = aref | (mux & (_BV(MUX4) | _BV(MUX3) | _BV(MUX2) | _BV(MUX1) | _BV(MUX0)));
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#else
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ADMUX = aref | (mux & (_BV(MUX3) | _BV(MUX2) | _BV(MUX1) | _BV(MUX0)));
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#endif
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// Start the conversion
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ADCSRA |= _BV(ADSC);
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// Wait for result
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while (ADCSRA & _BV(ADSC))
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;
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// Must read LSB first
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low = ADCL;
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// Must read MSB only once!
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low |= (ADCH << 8);
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// turn off the ADC
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ADCSRA &= ~(1 << ADEN);
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return low;
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}
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53
platforms/avr/drivers/analog.h
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53
platforms/avr/drivers/analog.h
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@ -0,0 +1,53 @@
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/* Copyright 2015 Jack Humbert
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <stdint.h>
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#include "quantum.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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void analogReference(uint8_t mode);
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int16_t analogRead(uint8_t pin);
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int16_t analogReadPin(pin_t pin);
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uint8_t pinToMux(pin_t pin);
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int16_t adc_read(uint8_t mux);
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#ifdef __cplusplus
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}
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#endif
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#define ADC_REF_EXTERNAL 0 // AREF, Internal Vref turned off
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#define ADC_REF_POWER _BV(REFS0) // AVCC with external capacitor on AREF pin
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#define ADC_REF_INTERNAL (_BV(REFS1) | _BV(REFS0)) // Internal 2.56V Voltage Reference with external capacitor on AREF pin (1.1V for 328P)
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// These prescaler values are for high speed mode, ADHSM = 1
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#if F_CPU == 16000000L || F_CPU == 12000000L
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# define ADC_PRESCALER (_BV(ADPS2) | _BV(ADPS1)) // /64
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#elif F_CPU == 8000000L
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# define ADC_PRESCALER (_BV(ADPS2) | _BV(ADPS0)) // /32
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#elif F_CPU == 4000000L
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# define ADC_PRESCALER (_BV(ADPS2)) // /16
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#elif F_CPU == 2000000L
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# define ADC_PRESCALER (_BV(ADPS1) | _BV(ADPS0)) // /8
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#elif F_CPU == 1000000L
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# define ADC_PRESCALER _BV(ADPS1) // /4
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#else
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# define ADC_PRESCALER _BV(ADPS0) // /2
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#endif
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23
platforms/avr/drivers/glcdfont.c
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23
platforms/avr/drivers/glcdfont.c
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// This is the 'classic' fixed-space bitmap font for Adafruit_GFX since 1.0.
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// See gfxfont.h for newer custom bitmap font info.
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#include "progmem.h"
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// Standard ASCII 5x7 font
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static const unsigned char font[] PROGMEM = {
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0x00, 0x00, 0x00, 0x00, 0x00, 0x3E, 0x5B, 0x4F, 0x5B, 0x3E, 0x3E, 0x6B, 0x4F, 0x6B, 0x3E, 0x1C, 0x3E, 0x7C, 0x3E, 0x1C, 0x18, 0x3C, 0x7E, 0x3C, 0x18, 0x1C, 0x57, 0x7D, 0x57, 0x1C, 0x1C, 0x5E, 0x7F, 0x5E, 0x1C, 0x00, 0x18, 0x3C, 0x18, 0x00, 0xFF, 0xE7, 0xC3, 0xE7, 0xFF, 0x00, 0x18, 0x24, 0x18, 0x00, 0xFF, 0xE7, 0xDB, 0xE7, 0xFF, 0x30, 0x48, 0x3A, 0x06, 0x0E, 0x26, 0x29, 0x79, 0x29, 0x26, 0x40, 0x7F, 0x05, 0x05, 0x07, 0x40, 0x7F, 0x05, 0x25, 0x3F, 0x5A, 0x3C, 0xE7, 0x3C, 0x5A, 0x7F, 0x3E, 0x1C, 0x1C, 0x08, 0x08, 0x1C, 0x1C, 0x3E, 0x7F, 0x14, 0x22, 0x7F, 0x22, 0x14, 0x5F, 0x5F, 0x00, 0x5F, 0x5F, 0x06, 0x09, 0x7F, 0x01, 0x7F, 0x00, 0x66, 0x89, 0x95, 0x6A, 0x60, 0x60, 0x60, 0x60, 0x60, 0x94, 0xA2, 0xFF, 0xA2, 0x94, 0x08, 0x04, 0x7E, 0x04, 0x08, 0x10, 0x20, 0x7E, 0x20, 0x10, 0x08, 0x08, 0x2A, 0x1C, 0x08, 0x08, 0x1C, 0x2A, 0x08, 0x08, 0x1E, 0x10, 0x10, 0x10, 0x10, 0x0C, 0x1E, 0x0C, 0x1E, 0x0C,
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0x30, 0x38, 0x3E, 0x38, 0x30, 0x06, 0x0E, 0x3E, 0x0E, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x5F, 0x00, 0x00, 0x00, 0x07, 0x00, 0x07, 0x00, 0x14, 0x7F, 0x14, 0x7F, 0x14, 0x24, 0x2A, 0x7F, 0x2A, 0x12, 0x23, 0x13, 0x08, 0x64, 0x62, 0x36, 0x49, 0x56, 0x20, 0x50, 0x00, 0x08, 0x07, 0x03, 0x00, 0x00, 0x1C, 0x22, 0x41, 0x00, 0x00, 0x41, 0x22, 0x1C, 0x00, 0x2A, 0x1C, 0x7F, 0x1C, 0x2A, 0x08, 0x08, 0x3E, 0x08, 0x08, 0x00, 0x80, 0x70, 0x30, 0x00, 0x08, 0x08, 0x08, 0x08, 0x08, 0x00, 0x00, 0x60, 0x60, 0x00, 0x20, 0x10, 0x08, 0x04, 0x02, 0x3E, 0x51, 0x49, 0x45, 0x3E, 0x00, 0x42, 0x7F, 0x40, 0x00, 0x72, 0x49, 0x49, 0x49, 0x46, 0x21, 0x41, 0x49, 0x4D, 0x33, 0x18, 0x14, 0x12, 0x7F, 0x10, 0x27, 0x45, 0x45, 0x45, 0x39, 0x3C, 0x4A, 0x49, 0x49, 0x31, 0x41, 0x21, 0x11, 0x09, 0x07, 0x36, 0x49, 0x49, 0x49, 0x36, 0x46, 0x49, 0x49, 0x29, 0x1E, 0x00, 0x00, 0x14, 0x00, 0x00, 0x00, 0x40, 0x34, 0x00, 0x00,
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0x00, 0x08, 0x14, 0x22, 0x41, 0x14, 0x14, 0x14, 0x14, 0x14, 0x00, 0x41, 0x22, 0x14, 0x08, 0x02, 0x01, 0x59, 0x09, 0x06, 0x3E, 0x41, 0x5D, 0x59, 0x4E, 0x7C, 0x12, 0x11, 0x12, 0x7C, 0x7F, 0x49, 0x49, 0x49, 0x36, 0x3E, 0x41, 0x41, 0x41, 0x22, 0x7F, 0x41, 0x41, 0x41, 0x3E, 0x7F, 0x49, 0x49, 0x49, 0x41, 0x7F, 0x09, 0x09, 0x09, 0x01, 0x3E, 0x41, 0x41, 0x51, 0x73, 0x7F, 0x08, 0x08, 0x08, 0x7F, 0x00, 0x41, 0x7F, 0x41, 0x00, 0x20, 0x40, 0x41, 0x3F, 0x01, 0x7F, 0x08, 0x14, 0x22, 0x41, 0x7F, 0x40, 0x40, 0x40, 0x40, 0x7F, 0x02, 0x1C, 0x02, 0x7F, 0x7F, 0x04, 0x08, 0x10, 0x7F, 0x3E, 0x41, 0x41, 0x41, 0x3E, 0x7F, 0x09, 0x09, 0x09, 0x06, 0x3E, 0x41, 0x51, 0x21, 0x5E, 0x7F, 0x09, 0x19, 0x29, 0x46, 0x26, 0x49, 0x49, 0x49, 0x32, 0x03, 0x01, 0x7F, 0x01, 0x03, 0x3F, 0x40, 0x40, 0x40, 0x3F, 0x1F, 0x20, 0x40, 0x20, 0x1F, 0x3F, 0x40, 0x38, 0x40, 0x3F, 0x63, 0x14, 0x08, 0x14, 0x63, 0x03, 0x04, 0x78, 0x04, 0x03,
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0x61, 0x59, 0x49, 0x4D, 0x43, 0x00, 0x7F, 0x41, 0x41, 0x41, 0x02, 0x04, 0x08, 0x10, 0x20, 0x00, 0x41, 0x41, 0x41, 0x7F, 0x04, 0x02, 0x01, 0x02, 0x04, 0x40, 0x40, 0x40, 0x40, 0x40, 0x00, 0x03, 0x07, 0x08, 0x00, 0x20, 0x54, 0x54, 0x78, 0x40, 0x7F, 0x28, 0x44, 0x44, 0x38, 0x38, 0x44, 0x44, 0x44, 0x28, 0x38, 0x44, 0x44, 0x28, 0x7F, 0x38, 0x54, 0x54, 0x54, 0x18, 0x00, 0x08, 0x7E, 0x09, 0x02, 0x18, 0xA4, 0xA4, 0x9C, 0x78, 0x7F, 0x08, 0x04, 0x04, 0x78, 0x00, 0x44, 0x7D, 0x40, 0x00, 0x20, 0x40, 0x40, 0x3D, 0x00, 0x7F, 0x10, 0x28, 0x44, 0x00, 0x00, 0x41, 0x7F, 0x40, 0x00, 0x7C, 0x04, 0x78, 0x04, 0x78, 0x7C, 0x08, 0x04, 0x04, 0x78, 0x38, 0x44, 0x44, 0x44, 0x38, 0xFC, 0x18, 0x24, 0x24, 0x18, 0x18, 0x24, 0x24, 0x18, 0xFC, 0x7C, 0x08, 0x04, 0x04, 0x08, 0x48, 0x54, 0x54, 0x54, 0x24, 0x04, 0x04, 0x3F, 0x44, 0x24, 0x3C, 0x40, 0x40, 0x20, 0x7C, 0x1C, 0x20, 0x40, 0x20, 0x1C, 0x3C, 0x40, 0x30, 0x40, 0x3C,
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0x44, 0x28, 0x10, 0x28, 0x44, 0x4C, 0x90, 0x90, 0x90, 0x7C, 0x44, 0x64, 0x54, 0x4C, 0x44, 0x00, 0x08, 0x36, 0x41, 0x00, 0x00, 0x00, 0x77, 0x00, 0x00, 0x00, 0x41, 0x36, 0x08, 0x00, 0x02, 0x01, 0x02, 0x04, 0x02, 0x3C, 0x26, 0x23, 0x26, 0x3C, 0x1E, 0xA1, 0xA1, 0x61, 0x12, 0x3A, 0x40, 0x40, 0x20, 0x7A, 0x38, 0x54, 0x54, 0x55, 0x59, 0x21, 0x55, 0x55, 0x79, 0x41, 0x22, 0x54, 0x54, 0x78, 0x42, // a-umlaut
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0x21, 0x55, 0x54, 0x78, 0x40, 0x20, 0x54, 0x55, 0x79, 0x40, 0x0C, 0x1E, 0x52, 0x72, 0x12, 0x39, 0x55, 0x55, 0x55, 0x59, 0x39, 0x54, 0x54, 0x54, 0x59, 0x39, 0x55, 0x54, 0x54, 0x58, 0x00, 0x00, 0x45, 0x7C, 0x41, 0x00, 0x02, 0x45, 0x7D, 0x42, 0x00, 0x01, 0x45, 0x7C, 0x40, 0x7D, 0x12, 0x11, 0x12, 0x7D, // A-umlaut
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0xF0, 0x28, 0x25, 0x28, 0xF0, 0x7C, 0x54, 0x55, 0x45, 0x00, 0x20, 0x54, 0x54, 0x7C, 0x54, 0x7C, 0x0A, 0x09, 0x7F, 0x49, 0x32, 0x49, 0x49, 0x49, 0x32, 0x3A, 0x44, 0x44, 0x44, 0x3A, // o-umlaut
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0x32, 0x4A, 0x48, 0x48, 0x30, 0x3A, 0x41, 0x41, 0x21, 0x7A, 0x3A, 0x42, 0x40, 0x20, 0x78, 0x00, 0x9D, 0xA0, 0xA0, 0x7D, 0x3D, 0x42, 0x42, 0x42, 0x3D, // O-umlaut
|
||||
0x3D, 0x40, 0x40, 0x40, 0x3D, 0x3C, 0x24, 0xFF, 0x24, 0x24, 0x48, 0x7E, 0x49, 0x43, 0x66, 0x2B, 0x2F, 0xFC, 0x2F, 0x2B, 0xFF, 0x09, 0x29, 0xF6, 0x20, 0xC0, 0x88, 0x7E, 0x09, 0x03, 0x20, 0x54, 0x54, 0x79, 0x41, 0x00, 0x00, 0x44, 0x7D, 0x41, 0x30, 0x48, 0x48, 0x4A, 0x32, 0x38, 0x40, 0x40, 0x22, 0x7A, 0x00, 0x7A, 0x0A, 0x0A, 0x72, 0x7D, 0x0D, 0x19, 0x31, 0x7D, 0x26, 0x29, 0x29, 0x2F, 0x28, 0x26, 0x29, 0x29, 0x29, 0x26, 0x30, 0x48, 0x4D, 0x40, 0x20, 0x38, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x08, 0x38, 0x2F, 0x10, 0xC8, 0xAC, 0xBA, 0x2F, 0x10, 0x28, 0x34, 0xFA, 0x00, 0x00, 0x7B, 0x00, 0x00, 0x08, 0x14, 0x2A, 0x14, 0x22, 0x22, 0x14, 0x2A, 0x14, 0x08, 0x55, 0x00, 0x55, 0x00, 0x55, // #176 (25% block) missing in old code
|
||||
0xAA, 0x55, 0xAA, 0x55, 0xAA, // 50% block
|
||||
0xFF, 0x55, 0xFF, 0x55, 0xFF, // 75% block
|
||||
0x00, 0x00, 0x00, 0xFF, 0x00, 0x10, 0x10, 0x10, 0xFF, 0x00, 0x14, 0x14, 0x14, 0xFF, 0x00, 0x10, 0x10, 0xFF, 0x00, 0xFF, 0x10, 0x10, 0xF0, 0x10, 0xF0, 0x14, 0x14, 0x14, 0xFC, 0x00, 0x14, 0x14, 0xF7, 0x00, 0xFF, 0x00, 0x00, 0xFF, 0x00, 0xFF, 0x14, 0x14, 0xF4, 0x04, 0xFC, 0x14, 0x14, 0x17, 0x10, 0x1F, 0x10, 0x10, 0x1F, 0x10, 0x1F, 0x14, 0x14, 0x14, 0x1F, 0x00, 0x10, 0x10, 0x10, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x1F, 0x10, 0x10, 0x10, 0x10, 0x1F, 0x10, 0x10, 0x10, 0x10, 0xF0, 0x10, 0x00, 0x00, 0x00, 0xFF, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0xFF, 0x10, 0x00, 0x00, 0x00, 0xFF, 0x14, 0x00, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0x00, 0x1F, 0x10, 0x17, 0x00, 0x00, 0xFC, 0x04, 0xF4, 0x14, 0x14, 0x17, 0x10, 0x17, 0x14, 0x14, 0xF4, 0x04, 0xF4, 0x00, 0x00, 0xFF, 0x00, 0xF7, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0x14, 0xF7, 0x00, 0xF7, 0x14, 0x14, 0x14, 0x17, 0x14, 0x10, 0x10, 0x1F, 0x10, 0x1F,
|
||||
0x14, 0x14, 0x14, 0xF4, 0x14, 0x10, 0x10, 0xF0, 0x10, 0xF0, 0x00, 0x00, 0x1F, 0x10, 0x1F, 0x00, 0x00, 0x00, 0x1F, 0x14, 0x00, 0x00, 0x00, 0xFC, 0x14, 0x00, 0x00, 0xF0, 0x10, 0xF0, 0x10, 0x10, 0xFF, 0x10, 0xFF, 0x14, 0x14, 0x14, 0xFF, 0x14, 0x10, 0x10, 0x10, 0x1F, 0x00, 0x00, 0x00, 0x00, 0xF0, 0x10, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xF0, 0xF0, 0xF0, 0xF0, 0xF0, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0x0F, 0x0F, 0x0F, 0x0F, 0x0F, 0x38, 0x44, 0x44, 0x38, 0x44, 0xFC, 0x4A, 0x4A, 0x4A, 0x34, // sharp-s or beta
|
||||
0x7E, 0x02, 0x02, 0x06, 0x06, 0x02, 0x7E, 0x02, 0x7E, 0x02, 0x63, 0x55, 0x49, 0x41, 0x63, 0x38, 0x44, 0x44, 0x3C, 0x04, 0x40, 0x7E, 0x20, 0x1E, 0x20, 0x06, 0x02, 0x7E, 0x02, 0x02, 0x99, 0xA5, 0xE7, 0xA5, 0x99, 0x1C, 0x2A, 0x49, 0x2A, 0x1C, 0x4C, 0x72, 0x01, 0x72, 0x4C, 0x30, 0x4A, 0x4D, 0x4D, 0x30, 0x30, 0x48, 0x78, 0x48, 0x30, 0xBC, 0x62, 0x5A, 0x46, 0x3D, 0x3E, 0x49, 0x49, 0x49, 0x00, 0x7E, 0x01, 0x01, 0x01, 0x7E, 0x2A, 0x2A, 0x2A, 0x2A, 0x2A, 0x44, 0x44, 0x5F, 0x44, 0x44, 0x40, 0x51, 0x4A, 0x44, 0x40, 0x40, 0x44, 0x4A, 0x51, 0x40, 0x00, 0x00, 0xFF, 0x01, 0x03, 0xE0, 0x80, 0xFF, 0x00, 0x00, 0x08, 0x08, 0x6B, 0x6B, 0x08, 0x36, 0x12, 0x36, 0x24, 0x36, 0x06, 0x0F, 0x09, 0x0F, 0x06, 0x00, 0x00, 0x18, 0x18, 0x00, 0x00, 0x00, 0x10, 0x10, 0x00, 0x30, 0x40, 0xFF, 0x01, 0x01, 0x00, 0x1F, 0x01, 0x01, 0x1E, 0x00, 0x19, 0x1D, 0x17, 0x12, 0x00, 0x3C, 0x3C, 0x3C, 0x3C, 0x00, 0x00, 0x00, 0x00, 0x00 // #255 NBSP
|
||||
};
|
||||
536
platforms/avr/drivers/hd44780.c
Normal file
536
platforms/avr/drivers/hd44780.c
Normal file
|
|
@ -0,0 +1,536 @@
|
|||
/****************************************************************************
|
||||
Title: HD44780U LCD library
|
||||
Author: Peter Fleury <pfleury@gmx.ch> http://tinyurl.com/peterfleury
|
||||
License: GNU General Public License Version 3
|
||||
File: $Id: lcd.c,v 1.15.2.2 2015/01/17 12:16:05 peter Exp $
|
||||
Software: AVR-GCC 3.3
|
||||
Target: any AVR device, memory mapped mode only for AT90S4414/8515/Mega
|
||||
|
||||
DESCRIPTION
|
||||
Basic routines for interfacing a HD44780U-based text lcd display
|
||||
|
||||
Originally based on Volker Oth's lcd library,
|
||||
changed lcd_init(), added additional constants for lcd_command(),
|
||||
added 4-bit I/O mode, improved and optimized code.
|
||||
|
||||
Library can be operated in memory mapped mode (LCD_IO_MODE=0) or in
|
||||
4-bit IO port mode (LCD_IO_MODE=1). 8-bit IO port mode not supported.
|
||||
|
||||
Memory mapped mode compatible with Kanda STK200, but supports also
|
||||
generation of R/W signal through A8 address line.
|
||||
|
||||
USAGE
|
||||
See the C include lcd.h file for a description of each function
|
||||
|
||||
*****************************************************************************/
|
||||
#include <inttypes.h>
|
||||
#include <avr/io.h>
|
||||
#include <avr/pgmspace.h>
|
||||
#include <util/delay.h>
|
||||
#include "hd44780.h"
|
||||
|
||||
/*
|
||||
** constants/macros
|
||||
*/
|
||||
#define DDR(x) (*(&x - 1)) /* address of data direction register of port x */
|
||||
#if defined(__AVR_ATmega64__) || defined(__AVR_ATmega128__)
|
||||
/* on ATmega64/128 PINF is on port 0x00 and not 0x60 */
|
||||
# define PIN(x) (&PORTF == &(x) ? _SFR_IO8(0x00) : (*(&x - 2)))
|
||||
#else
|
||||
# define PIN(x) (*(&x - 2)) /* address of input register of port x */
|
||||
#endif
|
||||
|
||||
#if LCD_IO_MODE
|
||||
# define lcd_e_delay() _delay_us(LCD_DELAY_ENABLE_PULSE)
|
||||
# define lcd_e_high() LCD_E_PORT |= _BV(LCD_E_PIN);
|
||||
# define lcd_e_low() LCD_E_PORT &= ~_BV(LCD_E_PIN);
|
||||
# define lcd_e_toggle() toggle_e()
|
||||
# define lcd_rw_high() LCD_RW_PORT |= _BV(LCD_RW_PIN)
|
||||
# define lcd_rw_low() LCD_RW_PORT &= ~_BV(LCD_RW_PIN)
|
||||
# define lcd_rs_high() LCD_RS_PORT |= _BV(LCD_RS_PIN)
|
||||
# define lcd_rs_low() LCD_RS_PORT &= ~_BV(LCD_RS_PIN)
|
||||
#endif
|
||||
|
||||
#if LCD_IO_MODE
|
||||
# if LCD_LINES == 1
|
||||
# define LCD_FUNCTION_DEFAULT LCD_FUNCTION_4BIT_1LINE
|
||||
# else
|
||||
# define LCD_FUNCTION_DEFAULT LCD_FUNCTION_4BIT_2LINES
|
||||
# endif
|
||||
#else
|
||||
# if LCD_LINES == 1
|
||||
# define LCD_FUNCTION_DEFAULT LCD_FUNCTION_8BIT_1LINE
|
||||
# else
|
||||
# define LCD_FUNCTION_DEFAULT LCD_FUNCTION_8BIT_2LINES
|
||||
# endif
|
||||
#endif
|
||||
|
||||
#if LCD_CONTROLLER_KS0073
|
||||
# if LCD_LINES == 4
|
||||
|
||||
# define KS0073_EXTENDED_FUNCTION_REGISTER_ON 0x2C /* |0|010|1100 4-bit mode, extension-bit RE = 1 */
|
||||
# define KS0073_EXTENDED_FUNCTION_REGISTER_OFF 0x28 /* |0|010|1000 4-bit mode, extension-bit RE = 0 */
|
||||
# define KS0073_4LINES_MODE 0x09 /* |0|000|1001 4 lines mode */
|
||||
|
||||
# endif
|
||||
#endif
|
||||
|
||||
/*
|
||||
** function prototypes
|
||||
*/
|
||||
#if LCD_IO_MODE
|
||||
static void toggle_e(void);
|
||||
#endif
|
||||
|
||||
/*
|
||||
** local functions
|
||||
*/
|
||||
|
||||
/*************************************************************************
|
||||
delay for a minimum of <us> microseconds
|
||||
the number of loops is calculated at compile-time from MCU clock frequency
|
||||
*************************************************************************/
|
||||
#define delay(us) _delay_us(us)
|
||||
|
||||
#if LCD_IO_MODE
|
||||
/* toggle Enable Pin to initiate write */
|
||||
static void toggle_e(void) {
|
||||
lcd_e_high();
|
||||
lcd_e_delay();
|
||||
lcd_e_low();
|
||||
}
|
||||
#endif
|
||||
|
||||
/*************************************************************************
|
||||
Low-level function to write byte to LCD controller
|
||||
Input: data byte to write to LCD
|
||||
rs 1: write data
|
||||
0: write instruction
|
||||
Returns: none
|
||||
*************************************************************************/
|
||||
#if LCD_IO_MODE
|
||||
static void lcd_write(uint8_t data, uint8_t rs) {
|
||||
unsigned char dataBits;
|
||||
|
||||
if (rs) { /* write data (RS=1, RW=0) */
|
||||
lcd_rs_high();
|
||||
} else { /* write instruction (RS=0, RW=0) */
|
||||
lcd_rs_low();
|
||||
}
|
||||
lcd_rw_low(); /* RW=0 write mode */
|
||||
|
||||
if ((&LCD_DATA0_PORT == &LCD_DATA1_PORT) && (&LCD_DATA1_PORT == &LCD_DATA2_PORT) && (&LCD_DATA2_PORT == &LCD_DATA3_PORT) && (LCD_DATA0_PIN == 0) && (LCD_DATA1_PIN == 1) && (LCD_DATA2_PIN == 2) && (LCD_DATA3_PIN == 3)) {
|
||||
/* configure data pins as output */
|
||||
DDR(LCD_DATA0_PORT) |= 0x0F;
|
||||
|
||||
/* output high nibble first */
|
||||
dataBits = LCD_DATA0_PORT & 0xF0;
|
||||
LCD_DATA0_PORT = dataBits | ((data >> 4) & 0x0F);
|
||||
lcd_e_toggle();
|
||||
|
||||
/* output low nibble */
|
||||
LCD_DATA0_PORT = dataBits | (data & 0x0F);
|
||||
lcd_e_toggle();
|
||||
|
||||
/* all data pins high (inactive) */
|
||||
LCD_DATA0_PORT = dataBits | 0x0F;
|
||||
} else {
|
||||
/* configure data pins as output */
|
||||
DDR(LCD_DATA0_PORT) |= _BV(LCD_DATA0_PIN);
|
||||
DDR(LCD_DATA1_PORT) |= _BV(LCD_DATA1_PIN);
|
||||
DDR(LCD_DATA2_PORT) |= _BV(LCD_DATA2_PIN);
|
||||
DDR(LCD_DATA3_PORT) |= _BV(LCD_DATA3_PIN);
|
||||
|
||||
/* output high nibble first */
|
||||
LCD_DATA3_PORT &= ~_BV(LCD_DATA3_PIN);
|
||||
LCD_DATA2_PORT &= ~_BV(LCD_DATA2_PIN);
|
||||
LCD_DATA1_PORT &= ~_BV(LCD_DATA1_PIN);
|
||||
LCD_DATA0_PORT &= ~_BV(LCD_DATA0_PIN);
|
||||
if (data & 0x80) LCD_DATA3_PORT |= _BV(LCD_DATA3_PIN);
|
||||
if (data & 0x40) LCD_DATA2_PORT |= _BV(LCD_DATA2_PIN);
|
||||
if (data & 0x20) LCD_DATA1_PORT |= _BV(LCD_DATA1_PIN);
|
||||
if (data & 0x10) LCD_DATA0_PORT |= _BV(LCD_DATA0_PIN);
|
||||
lcd_e_toggle();
|
||||
|
||||
/* output low nibble */
|
||||
LCD_DATA3_PORT &= ~_BV(LCD_DATA3_PIN);
|
||||
LCD_DATA2_PORT &= ~_BV(LCD_DATA2_PIN);
|
||||
LCD_DATA1_PORT &= ~_BV(LCD_DATA1_PIN);
|
||||
LCD_DATA0_PORT &= ~_BV(LCD_DATA0_PIN);
|
||||
if (data & 0x08) LCD_DATA3_PORT |= _BV(LCD_DATA3_PIN);
|
||||
if (data & 0x04) LCD_DATA2_PORT |= _BV(LCD_DATA2_PIN);
|
||||
if (data & 0x02) LCD_DATA1_PORT |= _BV(LCD_DATA1_PIN);
|
||||
if (data & 0x01) LCD_DATA0_PORT |= _BV(LCD_DATA0_PIN);
|
||||
lcd_e_toggle();
|
||||
|
||||
/* all data pins high (inactive) */
|
||||
LCD_DATA0_PORT |= _BV(LCD_DATA0_PIN);
|
||||
LCD_DATA1_PORT |= _BV(LCD_DATA1_PIN);
|
||||
LCD_DATA2_PORT |= _BV(LCD_DATA2_PIN);
|
||||
LCD_DATA3_PORT |= _BV(LCD_DATA3_PIN);
|
||||
}
|
||||
}
|
||||
#else
|
||||
# define lcd_write(d, rs) \
|
||||
if (rs) \
|
||||
*(volatile uint8_t *)(LCD_IO_DATA) = d; \
|
||||
else \
|
||||
*(volatile uint8_t *)(LCD_IO_FUNCTION) = d;
|
||||
/* rs==0 -> write instruction to LCD_IO_FUNCTION */
|
||||
/* rs==1 -> write data to LCD_IO_DATA */
|
||||
#endif
|
||||
|
||||
/*************************************************************************
|
||||
Low-level function to read byte from LCD controller
|
||||
Input: rs 1: read data
|
||||
0: read busy flag / address counter
|
||||
Returns: byte read from LCD controller
|
||||
*************************************************************************/
|
||||
#if LCD_IO_MODE
|
||||
static uint8_t lcd_read(uint8_t rs) {
|
||||
uint8_t data;
|
||||
|
||||
if (rs)
|
||||
lcd_rs_high(); /* RS=1: read data */
|
||||
else
|
||||
lcd_rs_low(); /* RS=0: read busy flag */
|
||||
lcd_rw_high(); /* RW=1 read mode */
|
||||
|
||||
if ((&LCD_DATA0_PORT == &LCD_DATA1_PORT) && (&LCD_DATA1_PORT == &LCD_DATA2_PORT) && (&LCD_DATA2_PORT == &LCD_DATA3_PORT) && (LCD_DATA0_PIN == 0) && (LCD_DATA1_PIN == 1) && (LCD_DATA2_PIN == 2) && (LCD_DATA3_PIN == 3)) {
|
||||
DDR(LCD_DATA0_PORT) &= 0xF0; /* configure data pins as input */
|
||||
|
||||
lcd_e_high();
|
||||
lcd_e_delay();
|
||||
data = PIN(LCD_DATA0_PORT) << 4; /* read high nibble first */
|
||||
lcd_e_low();
|
||||
|
||||
lcd_e_delay(); /* Enable 500ns low */
|
||||
|
||||
lcd_e_high();
|
||||
lcd_e_delay();
|
||||
data |= PIN(LCD_DATA0_PORT) & 0x0F; /* read low nibble */
|
||||
lcd_e_low();
|
||||
} else {
|
||||
/* configure data pins as input */
|
||||
DDR(LCD_DATA0_PORT) &= ~_BV(LCD_DATA0_PIN);
|
||||
DDR(LCD_DATA1_PORT) &= ~_BV(LCD_DATA1_PIN);
|
||||
DDR(LCD_DATA2_PORT) &= ~_BV(LCD_DATA2_PIN);
|
||||
DDR(LCD_DATA3_PORT) &= ~_BV(LCD_DATA3_PIN);
|
||||
|
||||
/* read high nibble first */
|
||||
lcd_e_high();
|
||||
lcd_e_delay();
|
||||
data = 0;
|
||||
if (PIN(LCD_DATA0_PORT) & _BV(LCD_DATA0_PIN)) data |= 0x10;
|
||||
if (PIN(LCD_DATA1_PORT) & _BV(LCD_DATA1_PIN)) data |= 0x20;
|
||||
if (PIN(LCD_DATA2_PORT) & _BV(LCD_DATA2_PIN)) data |= 0x40;
|
||||
if (PIN(LCD_DATA3_PORT) & _BV(LCD_DATA3_PIN)) data |= 0x80;
|
||||
lcd_e_low();
|
||||
|
||||
lcd_e_delay(); /* Enable 500ns low */
|
||||
|
||||
/* read low nibble */
|
||||
lcd_e_high();
|
||||
lcd_e_delay();
|
||||
if (PIN(LCD_DATA0_PORT) & _BV(LCD_DATA0_PIN)) data |= 0x01;
|
||||
if (PIN(LCD_DATA1_PORT) & _BV(LCD_DATA1_PIN)) data |= 0x02;
|
||||
if (PIN(LCD_DATA2_PORT) & _BV(LCD_DATA2_PIN)) data |= 0x04;
|
||||
if (PIN(LCD_DATA3_PORT) & _BV(LCD_DATA3_PIN)) data |= 0x08;
|
||||
lcd_e_low();
|
||||
}
|
||||
return data;
|
||||
}
|
||||
#else
|
||||
# define lcd_read(rs) (rs) ? *(volatile uint8_t *)(LCD_IO_DATA + LCD_IO_READ) : *(volatile uint8_t *)(LCD_IO_FUNCTION + LCD_IO_READ)
|
||||
/* rs==0 -> read instruction from LCD_IO_FUNCTION */
|
||||
/* rs==1 -> read data from LCD_IO_DATA */
|
||||
#endif
|
||||
|
||||
/*************************************************************************
|
||||
loops while lcd is busy, returns address counter
|
||||
*************************************************************************/
|
||||
static uint8_t lcd_waitbusy(void)
|
||||
|
||||
{
|
||||
register uint8_t c;
|
||||
|
||||
/* wait until busy flag is cleared */
|
||||
while ((c = lcd_read(0)) & (1 << LCD_BUSY)) {
|
||||
}
|
||||
|
||||
/* the address counter is updated 4us after the busy flag is cleared */
|
||||
delay(LCD_DELAY_BUSY_FLAG);
|
||||
|
||||
/* now read the address counter */
|
||||
return (lcd_read(0)); // return address counter
|
||||
|
||||
} /* lcd_waitbusy */
|
||||
|
||||
/*************************************************************************
|
||||
Move cursor to the start of next line or to the first line if the cursor
|
||||
is already on the last line.
|
||||
*************************************************************************/
|
||||
static inline void lcd_newline(uint8_t pos) {
|
||||
register uint8_t addressCounter;
|
||||
|
||||
#if LCD_LINES == 1
|
||||
addressCounter = 0;
|
||||
#endif
|
||||
#if LCD_LINES == 2
|
||||
if (pos < (LCD_START_LINE2))
|
||||
addressCounter = LCD_START_LINE2;
|
||||
else
|
||||
addressCounter = LCD_START_LINE1;
|
||||
#endif
|
||||
#if LCD_LINES == 4
|
||||
# if KS0073_4LINES_MODE
|
||||
if (pos < LCD_START_LINE2)
|
||||
addressCounter = LCD_START_LINE2;
|
||||
else if ((pos >= LCD_START_LINE2) && (pos < LCD_START_LINE3))
|
||||
addressCounter = LCD_START_LINE3;
|
||||
else if ((pos >= LCD_START_LINE3) && (pos < LCD_START_LINE4))
|
||||
addressCounter = LCD_START_LINE4;
|
||||
else
|
||||
addressCounter = LCD_START_LINE1;
|
||||
# else
|
||||
if (pos < LCD_START_LINE3)
|
||||
addressCounter = LCD_START_LINE2;
|
||||
else if ((pos >= LCD_START_LINE2) && (pos < LCD_START_LINE4))
|
||||
addressCounter = LCD_START_LINE3;
|
||||
else if ((pos >= LCD_START_LINE3) && (pos < LCD_START_LINE2))
|
||||
addressCounter = LCD_START_LINE4;
|
||||
else
|
||||
addressCounter = LCD_START_LINE1;
|
||||
# endif
|
||||
#endif
|
||||
lcd_command((1 << LCD_DDRAM) + addressCounter);
|
||||
|
||||
} /* lcd_newline */
|
||||
|
||||
/*
|
||||
** PUBLIC FUNCTIONS
|
||||
*/
|
||||
|
||||
/*************************************************************************
|
||||
Send LCD controller instruction command
|
||||
Input: instruction to send to LCD controller, see HD44780 data sheet
|
||||
Returns: none
|
||||
*************************************************************************/
|
||||
void lcd_command(uint8_t cmd) {
|
||||
lcd_waitbusy();
|
||||
lcd_write(cmd, 0);
|
||||
}
|
||||
|
||||
/*************************************************************************
|
||||
Send data byte to LCD controller
|
||||
Input: data to send to LCD controller, see HD44780 data sheet
|
||||
Returns: none
|
||||
*************************************************************************/
|
||||
void lcd_data(uint8_t data) {
|
||||
lcd_waitbusy();
|
||||
lcd_write(data, 1);
|
||||
}
|
||||
|
||||
/*************************************************************************
|
||||
Set cursor to specified position
|
||||
Input: x horizontal position (0: left most position)
|
||||
y vertical position (0: first line)
|
||||
Returns: none
|
||||
*************************************************************************/
|
||||
void lcd_gotoxy(uint8_t x, uint8_t y) {
|
||||
#if LCD_LINES == 1
|
||||
lcd_command((1 << LCD_DDRAM) + LCD_START_LINE1 + x);
|
||||
#endif
|
||||
#if LCD_LINES == 2
|
||||
if (y == 0)
|
||||
lcd_command((1 << LCD_DDRAM) + LCD_START_LINE1 + x);
|
||||
else
|
||||
lcd_command((1 << LCD_DDRAM) + LCD_START_LINE2 + x);
|
||||
#endif
|
||||
#if LCD_LINES == 4
|
||||
if (y == 0)
|
||||
lcd_command((1 << LCD_DDRAM) + LCD_START_LINE1 + x);
|
||||
else if (y == 1)
|
||||
lcd_command((1 << LCD_DDRAM) + LCD_START_LINE2 + x);
|
||||
else if (y == 2)
|
||||
lcd_command((1 << LCD_DDRAM) + LCD_START_LINE3 + x);
|
||||
else /* y==3 */
|
||||
lcd_command((1 << LCD_DDRAM) + LCD_START_LINE4 + x);
|
||||
#endif
|
||||
|
||||
} /* lcd_gotoxy */
|
||||
|
||||
/*************************************************************************
|
||||
*************************************************************************/
|
||||
int lcd_getxy(void) { return lcd_waitbusy(); }
|
||||
|
||||
/*************************************************************************
|
||||
Clear display and set cursor to home position
|
||||
*************************************************************************/
|
||||
void lcd_clrscr(void) { lcd_command(1 << LCD_CLR); }
|
||||
|
||||
/*************************************************************************
|
||||
Set cursor to home position
|
||||
*************************************************************************/
|
||||
void lcd_home(void) { lcd_command(1 << LCD_HOME); }
|
||||
|
||||
/*************************************************************************
|
||||
Display character at current cursor position
|
||||
Input: character to be displayed
|
||||
Returns: none
|
||||
*************************************************************************/
|
||||
void lcd_putc(char c) {
|
||||
uint8_t pos;
|
||||
|
||||
pos = lcd_waitbusy(); // read busy-flag and address counter
|
||||
if (c == '\n') {
|
||||
lcd_newline(pos);
|
||||
} else {
|
||||
#if LCD_WRAP_LINES == 1
|
||||
# if LCD_LINES == 1
|
||||
if (pos == LCD_START_LINE1 + LCD_DISP_LENGTH) {
|
||||
lcd_write((1 << LCD_DDRAM) + LCD_START_LINE1, 0);
|
||||
}
|
||||
# elif LCD_LINES == 2
|
||||
if (pos == LCD_START_LINE1 + LCD_DISP_LENGTH) {
|
||||
lcd_write((1 << LCD_DDRAM) + LCD_START_LINE2, 0);
|
||||
} else if (pos == LCD_START_LINE2 + LCD_DISP_LENGTH) {
|
||||
lcd_write((1 << LCD_DDRAM) + LCD_START_LINE1, 0);
|
||||
}
|
||||
# elif LCD_LINES == 4
|
||||
if (pos == LCD_START_LINE1 + LCD_DISP_LENGTH) {
|
||||
lcd_write((1 << LCD_DDRAM) + LCD_START_LINE2, 0);
|
||||
} else if (pos == LCD_START_LINE2 + LCD_DISP_LENGTH) {
|
||||
lcd_write((1 << LCD_DDRAM) + LCD_START_LINE3, 0);
|
||||
} else if (pos == LCD_START_LINE3 + LCD_DISP_LENGTH) {
|
||||
lcd_write((1 << LCD_DDRAM) + LCD_START_LINE4, 0);
|
||||
} else if (pos == LCD_START_LINE4 + LCD_DISP_LENGTH) {
|
||||
lcd_write((1 << LCD_DDRAM) + LCD_START_LINE1, 0);
|
||||
}
|
||||
# endif
|
||||
lcd_waitbusy();
|
||||
#endif
|
||||
lcd_write(c, 1);
|
||||
}
|
||||
|
||||
} /* lcd_putc */
|
||||
|
||||
/*************************************************************************
|
||||
Display string without auto linefeed
|
||||
Input: string to be displayed
|
||||
Returns: none
|
||||
*************************************************************************/
|
||||
void lcd_puts(const char *s)
|
||||
/* print string on lcd (no auto linefeed) */
|
||||
{
|
||||
register char c;
|
||||
|
||||
while ((c = *s++)) {
|
||||
lcd_putc(c);
|
||||
}
|
||||
|
||||
} /* lcd_puts */
|
||||
|
||||
/*************************************************************************
|
||||
Display string from program memory without auto linefeed
|
||||
Input: string from program memory be be displayed
|
||||
Returns: none
|
||||
*************************************************************************/
|
||||
void lcd_puts_p(const char *progmem_s)
|
||||
/* print string from program memory on lcd (no auto linefeed) */
|
||||
{
|
||||
register char c;
|
||||
|
||||
while ((c = pgm_read_byte(progmem_s++))) {
|
||||
lcd_putc(c);
|
||||
}
|
||||
|
||||
} /* lcd_puts_p */
|
||||
|
||||
/*************************************************************************
|
||||
Initialize display and select type of cursor
|
||||
Input: dispAttr LCD_DISP_OFF display off
|
||||
LCD_DISP_ON display on, cursor off
|
||||
LCD_DISP_ON_CURSOR display on, cursor on
|
||||
LCD_DISP_CURSOR_BLINK display on, cursor on flashing
|
||||
Returns: none
|
||||
*************************************************************************/
|
||||
void lcd_init(uint8_t dispAttr) {
|
||||
#if LCD_IO_MODE
|
||||
/*
|
||||
* Initialize LCD to 4 bit I/O mode
|
||||
*/
|
||||
|
||||
if ((&LCD_DATA0_PORT == &LCD_DATA1_PORT) && (&LCD_DATA1_PORT == &LCD_DATA2_PORT) && (&LCD_DATA2_PORT == &LCD_DATA3_PORT) && (&LCD_RS_PORT == &LCD_DATA0_PORT) && (&LCD_RW_PORT == &LCD_DATA0_PORT) && (&LCD_E_PORT == &LCD_DATA0_PORT) && (LCD_DATA0_PIN == 0) && (LCD_DATA1_PIN == 1) && (LCD_DATA2_PIN == 2) && (LCD_DATA3_PIN == 3) && (LCD_RS_PIN == 4) && (LCD_RW_PIN == 5) && (LCD_E_PIN == 6)) {
|
||||
/* configure all port bits as output (all LCD lines on same port) */
|
||||
DDR(LCD_DATA0_PORT) |= 0x7F;
|
||||
} else if ((&LCD_DATA0_PORT == &LCD_DATA1_PORT) && (&LCD_DATA1_PORT == &LCD_DATA2_PORT) && (&LCD_DATA2_PORT == &LCD_DATA3_PORT) && (LCD_DATA0_PIN == 0) && (LCD_DATA1_PIN == 1) && (LCD_DATA2_PIN == 2) && (LCD_DATA3_PIN == 3)) {
|
||||
/* configure all port bits as output (all LCD data lines on same port, but control lines on different ports) */
|
||||
DDR(LCD_DATA0_PORT) |= 0x0F;
|
||||
DDR(LCD_RS_PORT) |= _BV(LCD_RS_PIN);
|
||||
DDR(LCD_RW_PORT) |= _BV(LCD_RW_PIN);
|
||||
DDR(LCD_E_PORT) |= _BV(LCD_E_PIN);
|
||||
} else {
|
||||
/* configure all port bits as output (LCD data and control lines on different ports */
|
||||
DDR(LCD_RS_PORT) |= _BV(LCD_RS_PIN);
|
||||
DDR(LCD_RW_PORT) |= _BV(LCD_RW_PIN);
|
||||
DDR(LCD_E_PORT) |= _BV(LCD_E_PIN);
|
||||
DDR(LCD_DATA0_PORT) |= _BV(LCD_DATA0_PIN);
|
||||
DDR(LCD_DATA1_PORT) |= _BV(LCD_DATA1_PIN);
|
||||
DDR(LCD_DATA2_PORT) |= _BV(LCD_DATA2_PIN);
|
||||
DDR(LCD_DATA3_PORT) |= _BV(LCD_DATA3_PIN);
|
||||
}
|
||||
delay(LCD_DELAY_BOOTUP); /* wait 16ms or more after power-on */
|
||||
|
||||
/* initial write to lcd is 8bit */
|
||||
LCD_DATA1_PORT |= _BV(LCD_DATA1_PIN); // LCD_FUNCTION>>4;
|
||||
LCD_DATA0_PORT |= _BV(LCD_DATA0_PIN); // LCD_FUNCTION_8BIT>>4;
|
||||
lcd_e_toggle();
|
||||
delay(LCD_DELAY_INIT); /* delay, busy flag can't be checked here */
|
||||
|
||||
/* repeat last command */
|
||||
lcd_e_toggle();
|
||||
delay(LCD_DELAY_INIT_REP); /* delay, busy flag can't be checked here */
|
||||
|
||||
/* repeat last command a third time */
|
||||
lcd_e_toggle();
|
||||
delay(LCD_DELAY_INIT_REP); /* delay, busy flag can't be checked here */
|
||||
|
||||
/* now configure for 4bit mode */
|
||||
LCD_DATA0_PORT &= ~_BV(LCD_DATA0_PIN); // LCD_FUNCTION_4BIT_1LINE>>4
|
||||
lcd_e_toggle();
|
||||
delay(LCD_DELAY_INIT_4BIT); /* some displays need this additional delay */
|
||||
|
||||
/* from now the LCD only accepts 4 bit I/O, we can use lcd_command() */
|
||||
#else
|
||||
/*
|
||||
* Initialize LCD to 8 bit memory mapped mode
|
||||
*/
|
||||
|
||||
/* enable external SRAM (memory mapped lcd) and one wait state */
|
||||
MCUCR = _BV(SRE) | _BV(SRW);
|
||||
|
||||
/* reset LCD */
|
||||
delay(LCD_DELAY_BOOTUP); /* wait 16ms after power-on */
|
||||
lcd_write(LCD_FUNCTION_8BIT_1LINE, 0); /* function set: 8bit interface */
|
||||
delay(LCD_DELAY_INIT); /* wait 5ms */
|
||||
lcd_write(LCD_FUNCTION_8BIT_1LINE, 0); /* function set: 8bit interface */
|
||||
delay(LCD_DELAY_INIT_REP); /* wait 64us */
|
||||
lcd_write(LCD_FUNCTION_8BIT_1LINE, 0); /* function set: 8bit interface */
|
||||
delay(LCD_DELAY_INIT_REP); /* wait 64us */
|
||||
#endif
|
||||
|
||||
#if KS0073_4LINES_MODE
|
||||
/* Display with KS0073 controller requires special commands for enabling 4 line mode */
|
||||
lcd_command(KS0073_EXTENDED_FUNCTION_REGISTER_ON);
|
||||
lcd_command(KS0073_4LINES_MODE);
|
||||
lcd_command(KS0073_EXTENDED_FUNCTION_REGISTER_OFF);
|
||||
#else
|
||||
lcd_command(LCD_FUNCTION_DEFAULT); /* function set: display lines */
|
||||
#endif
|
||||
lcd_command(LCD_DISP_OFF); /* display off */
|
||||
lcd_clrscr(); /* display clear */
|
||||
lcd_command(LCD_MODE_DEFAULT); /* set entry mode */
|
||||
lcd_command(dispAttr); /* display/cursor control */
|
||||
|
||||
} /* lcd_init */
|
||||
348
platforms/avr/drivers/hd44780.h
Normal file
348
platforms/avr/drivers/hd44780.h
Normal file
|
|
@ -0,0 +1,348 @@
|
|||
/*************************************************************************
|
||||
Title : C include file for the HD44780U LCD library (lcd.c)
|
||||
Author: Peter Fleury <pfleury@gmx.ch> http://tinyurl.com/peterfleury
|
||||
License: GNU General Public License Version 3
|
||||
File: $Id: lcd.h,v 1.14.2.4 2015/01/20 17:16:07 peter Exp $
|
||||
Software: AVR-GCC 4.x
|
||||
Hardware: any AVR device, memory mapped mode only for AVR with
|
||||
memory mapped interface (AT90S8515/ATmega8515/ATmega128)
|
||||
***************************************************************************/
|
||||
|
||||
/**
|
||||
@mainpage
|
||||
Collection of libraries for AVR-GCC
|
||||
@author Peter Fleury pfleury@gmx.ch http://tinyurl.com/peterfleury
|
||||
@copyright (C) 2015 Peter Fleury, GNU General Public License Version 3
|
||||
|
||||
@file
|
||||
@defgroup pfleury_lcd LCD library <lcd.h>
|
||||
@code #include <lcd.h> @endcode
|
||||
|
||||
@brief Basic routines for interfacing a HD44780U-based character LCD display
|
||||
|
||||
LCD character displays can be found in many devices, like espresso machines, laser printers.
|
||||
The Hitachi HD44780 controller and its compatible controllers like Samsung KS0066U have become an industry standard for these types of displays.
|
||||
|
||||
This library allows easy interfacing with a HD44780 compatible display and can be
|
||||
operated in memory mapped mode (LCD_IO_MODE defined as 0 in the include file lcd.h.) or in
|
||||
4-bit IO port mode (LCD_IO_MODE defined as 1). 8-bit IO port mode is not supported.
|
||||
|
||||
Memory mapped mode is compatible with old Kanda STK200 starter kit, but also supports
|
||||
generation of R/W signal through A8 address line.
|
||||
|
||||
@see The chapter <a href=" http://homepage.hispeed.ch/peterfleury/avr-lcd44780.html" target="_blank">Interfacing a HD44780 Based LCD to an AVR</a>
|
||||
on my home page, which shows example circuits how to connect an LCD to an AVR controller.
|
||||
|
||||
@author Peter Fleury pfleury@gmx.ch http://tinyurl.com/peterfleury
|
||||
|
||||
@version 2.0
|
||||
|
||||
@copyright (C) 2015 Peter Fleury, GNU General Public License Version 3
|
||||
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <inttypes.h>
|
||||
#include <avr/pgmspace.h>
|
||||
|
||||
#if (__GNUC__ * 100 + __GNUC_MINOR__) < 405
|
||||
# error "This library requires AVR-GCC 4.5 or later, update to newer AVR-GCC compiler !"
|
||||
#endif
|
||||
|
||||
/**@{*/
|
||||
|
||||
/*
|
||||
* LCD and target specific definitions below can be defined in a separate include file with name lcd_definitions.h instead modifying this file
|
||||
* by adding -D_LCD_DEFINITIONS_FILE to the CDEFS section in the Makefile
|
||||
* All definitions added to the file lcd_definitions.h will override the default definitions from lcd.h
|
||||
*/
|
||||
#ifdef _LCD_DEFINITIONS_FILE
|
||||
# include "lcd_definitions.h"
|
||||
#endif
|
||||
|
||||
/**
|
||||
* @name Definition for LCD controller type
|
||||
* Use 0 for HD44780 controller, change to 1 for displays with KS0073 controller.
|
||||
*/
|
||||
#ifndef LCD_CONTROLLER_KS0073
|
||||
# define LCD_CONTROLLER_KS0073 0 /**< Use 0 for HD44780 controller, 1 for KS0073 controller */
|
||||
#endif
|
||||
|
||||
/**
|
||||
* @name Definitions for Display Size
|
||||
* Change these definitions to adapt setting to your display
|
||||
*
|
||||
* These definitions can be defined in a separate include file \b lcd_definitions.h instead modifying this file by
|
||||
* adding -D_LCD_DEFINITIONS_FILE to the CDEFS section in the Makefile.
|
||||
* All definitions added to the file lcd_definitions.h will override the default definitions from lcd.h
|
||||
*
|
||||
*/
|
||||
#ifndef LCD_LINES
|
||||
# define LCD_LINES 2 /**< number of visible lines of the display */
|
||||
#endif
|
||||
#ifndef LCD_DISP_LENGTH
|
||||
# define LCD_DISP_LENGTH 16 /**< visibles characters per line of the display */
|
||||
#endif
|
||||
#ifndef LCD_LINE_LENGTH
|
||||
# define LCD_LINE_LENGTH 0x40 /**< internal line length of the display */
|
||||
#endif
|
||||
#ifndef LCD_START_LINE1
|
||||
# define LCD_START_LINE1 0x00 /**< DDRAM address of first char of line 1 */
|
||||
#endif
|
||||
#ifndef LCD_START_LINE2
|
||||
# define LCD_START_LINE2 0x40 /**< DDRAM address of first char of line 2 */
|
||||
#endif
|
||||
#ifndef LCD_START_LINE3
|
||||
# define LCD_START_LINE3 0x14 /**< DDRAM address of first char of line 3 */
|
||||
#endif
|
||||
#ifndef LCD_START_LINE4
|
||||
# define LCD_START_LINE4 0x54 /**< DDRAM address of first char of line 4 */
|
||||
#endif
|
||||
#ifndef LCD_WRAP_LINES
|
||||
# define LCD_WRAP_LINES 0 /**< 0: no wrap, 1: wrap at end of visibile line */
|
||||
#endif
|
||||
|
||||
/**
|
||||
* @name Definitions for 4-bit IO mode
|
||||
*
|
||||
* The four LCD data lines and the three control lines RS, RW, E can be on the
|
||||
* same port or on different ports.
|
||||
* Change LCD_RS_PORT, LCD_RW_PORT, LCD_E_PORT if you want the control lines on
|
||||
* different ports.
|
||||
*
|
||||
* Normally the four data lines should be mapped to bit 0..3 on one port, but it
|
||||
* is possible to connect these data lines in different order or even on different
|
||||
* ports by adapting the LCD_DATAx_PORT and LCD_DATAx_PIN definitions.
|
||||
*
|
||||
* Adjust these definitions to your target.\n
|
||||
* These definitions can be defined in a separate include file \b lcd_definitions.h instead modifying this file by
|
||||
* adding \b -D_LCD_DEFINITIONS_FILE to the \b CDEFS section in the Makefile.
|
||||
* All definitions added to the file lcd_definitions.h will override the default definitions from lcd.h
|
||||
*
|
||||
*/
|
||||
#define LCD_IO_MODE 1 /**< 0: memory mapped mode, 1: IO port mode */
|
||||
|
||||
#if LCD_IO_MODE
|
||||
|
||||
# ifndef LCD_PORT
|
||||
# define LCD_PORT PORTA /**< port for the LCD lines */
|
||||
# endif
|
||||
# ifndef LCD_DATA0_PORT
|
||||
# define LCD_DATA0_PORT LCD_PORT /**< port for 4bit data bit 0 */
|
||||
# endif
|
||||
# ifndef LCD_DATA1_PORT
|
||||
# define LCD_DATA1_PORT LCD_PORT /**< port for 4bit data bit 1 */
|
||||
# endif
|
||||
# ifndef LCD_DATA2_PORT
|
||||
# define LCD_DATA2_PORT LCD_PORT /**< port for 4bit data bit 2 */
|
||||
# endif
|
||||
# ifndef LCD_DATA3_PORT
|
||||
# define LCD_DATA3_PORT LCD_PORT /**< port for 4bit data bit 3 */
|
||||
# endif
|
||||
# ifndef LCD_DATA0_PIN
|
||||
# define LCD_DATA0_PIN 4 /**< pin for 4bit data bit 0 */
|
||||
# endif
|
||||
# ifndef LCD_DATA1_PIN
|
||||
# define LCD_DATA1_PIN 5 /**< pin for 4bit data bit 1 */
|
||||
# endif
|
||||
# ifndef LCD_DATA2_PIN
|
||||
# define LCD_DATA2_PIN 6 /**< pin for 4bit data bit 2 */
|
||||
# endif
|
||||
# ifndef LCD_DATA3_PIN
|
||||
# define LCD_DATA3_PIN 7 /**< pin for 4bit data bit 3 */
|
||||
# endif
|
||||
# ifndef LCD_RS_PORT
|
||||
# define LCD_RS_PORT LCD_PORT /**< port for RS line */
|
||||
# endif
|
||||
# ifndef LCD_RS_PIN
|
||||
# define LCD_RS_PIN 3 /**< pin for RS line */
|
||||
# endif
|
||||
# ifndef LCD_RW_PORT
|
||||
# define LCD_RW_PORT LCD_PORT /**< port for RW line */
|
||||
# endif
|
||||
# ifndef LCD_RW_PIN
|
||||
# define LCD_RW_PIN 2 /**< pin for RW line */
|
||||
# endif
|
||||
# ifndef LCD_E_PORT
|
||||
# define LCD_E_PORT LCD_PORT /**< port for Enable line */
|
||||
# endif
|
||||
# ifndef LCD_E_PIN
|
||||
# define LCD_E_PIN 1 /**< pin for Enable line */
|
||||
# endif
|
||||
|
||||
#elif defined(__AVR_AT90S4414__) || defined(__AVR_AT90S8515__) || defined(__AVR_ATmega64__) || defined(__AVR_ATmega8515__) || defined(__AVR_ATmega103__) || defined(__AVR_ATmega128__) || defined(__AVR_ATmega161__) || defined(__AVR_ATmega162__)
|
||||
/*
|
||||
* memory mapped mode is only supported when the device has an external data memory interface
|
||||
*/
|
||||
# define LCD_IO_DATA 0xC000 /* A15=E=1, A14=RS=1 */
|
||||
# define LCD_IO_FUNCTION 0x8000 /* A15=E=1, A14=RS=0 */
|
||||
# define LCD_IO_READ 0x0100 /* A8 =R/W=1 (R/W: 1=Read, 0=Write */
|
||||
|
||||
#else
|
||||
# error "external data memory interface not available for this device, use 4-bit IO port mode"
|
||||
|
||||
#endif
|
||||
|
||||
/**
|
||||
* @name Definitions of delays
|
||||
* Used to calculate delay timers.
|
||||
* Adapt the F_CPU define in the Makefile to the clock frequency in Hz of your target
|
||||
*
|
||||
* These delay times can be adjusted, if some displays require different delays.\n
|
||||
* These definitions can be defined in a separate include file \b lcd_definitions.h instead modifying this file by
|
||||
* adding \b -D_LCD_DEFINITIONS_FILE to the \b CDEFS section in the Makefile.
|
||||
* All definitions added to the file lcd_definitions.h will override the default definitions from lcd.h
|
||||
*/
|
||||
#ifndef LCD_DELAY_BOOTUP
|
||||
# define LCD_DELAY_BOOTUP 16000 /**< delay in micro seconds after power-on */
|
||||
#endif
|
||||
#ifndef LCD_DELAY_INIT
|
||||
# define LCD_DELAY_INIT 5000 /**< delay in micro seconds after initialization command sent */
|
||||
#endif
|
||||
#ifndef LCD_DELAY_INIT_REP
|
||||
# define LCD_DELAY_INIT_REP 64 /**< delay in micro seconds after initialization command repeated */
|
||||
#endif
|
||||
#ifndef LCD_DELAY_INIT_4BIT
|
||||
# define LCD_DELAY_INIT_4BIT 64 /**< delay in micro seconds after setting 4-bit mode */
|
||||
#endif
|
||||
#ifndef LCD_DELAY_BUSY_FLAG
|
||||
# define LCD_DELAY_BUSY_FLAG 4 /**< time in micro seconds the address counter is updated after busy flag is cleared */
|
||||
#endif
|
||||
#ifndef LCD_DELAY_ENABLE_PULSE
|
||||
# define LCD_DELAY_ENABLE_PULSE 1 /**< enable signal pulse width in micro seconds */
|
||||
#endif
|
||||
|
||||
/**
|
||||
* @name Definitions for LCD command instructions
|
||||
* The constants define the various LCD controller instructions which can be passed to the
|
||||
* function lcd_command(), see HD44780 data sheet for a complete description.
|
||||
*/
|
||||
|
||||
/* instruction register bit positions, see HD44780U data sheet */
|
||||
#define LCD_CLR 0 /* DB0: clear display */
|
||||
#define LCD_HOME 1 /* DB1: return to home position */
|
||||
#define LCD_ENTRY_MODE 2 /* DB2: set entry mode */
|
||||
#define LCD_ENTRY_INC 1 /* DB1: 1=increment, 0=decrement */
|
||||
#define LCD_ENTRY_SHIFT 0 /* DB2: 1=display shift on */
|
||||
#define LCD_ON 3 /* DB3: turn lcd/cursor on */
|
||||
#define LCD_ON_DISPLAY 2 /* DB2: turn display on */
|
||||
#define LCD_ON_CURSOR 1 /* DB1: turn cursor on */
|
||||
#define LCD_ON_BLINK 0 /* DB0: blinking cursor ? */
|
||||
#define LCD_MOVE 4 /* DB4: move cursor/display */
|
||||
#define LCD_MOVE_DISP 3 /* DB3: move display (0-> cursor) ? */
|
||||
#define LCD_MOVE_RIGHT 2 /* DB2: move right (0-> left) ? */
|
||||
#define LCD_FUNCTION 5 /* DB5: function set */
|
||||
#define LCD_FUNCTION_8BIT 4 /* DB4: set 8BIT mode (0->4BIT mode) */
|
||||
#define LCD_FUNCTION_2LINES 3 /* DB3: two lines (0->one line) */
|
||||
#define LCD_FUNCTION_10DOTS 2 /* DB2: 5x10 font (0->5x7 font) */
|
||||
#define LCD_CGRAM 6 /* DB6: set CG RAM address */
|
||||
#define LCD_DDRAM 7 /* DB7: set DD RAM address */
|
||||
#define LCD_BUSY 7 /* DB7: LCD is busy */
|
||||
|
||||
/* set entry mode: display shift on/off, dec/inc cursor move direction */
|
||||
#define LCD_ENTRY_DEC 0x04 /* display shift off, dec cursor move dir */
|
||||
#define LCD_ENTRY_DEC_SHIFT 0x05 /* display shift on, dec cursor move dir */
|
||||
#define LCD_ENTRY_INC_ 0x06 /* display shift off, inc cursor move dir */
|
||||
#define LCD_ENTRY_INC_SHIFT 0x07 /* display shift on, inc cursor move dir */
|
||||
|
||||
/* display on/off, cursor on/off, blinking char at cursor position */
|
||||
#define LCD_DISP_OFF 0x08 /* display off */
|
||||
#define LCD_DISP_ON 0x0C /* display on, cursor off */
|
||||
#define LCD_DISP_ON_BLINK 0x0D /* display on, cursor off, blink char */
|
||||
#define LCD_DISP_ON_CURSOR 0x0E /* display on, cursor on */
|
||||
#define LCD_DISP_ON_CURSOR_BLINK 0x0F /* display on, cursor on, blink char */
|
||||
|
||||
/* move cursor/shift display */
|
||||
#define LCD_MOVE_CURSOR_LEFT 0x10 /* move cursor left (decrement) */
|
||||
#define LCD_MOVE_CURSOR_RIGHT 0x14 /* move cursor right (increment) */
|
||||
#define LCD_MOVE_DISP_LEFT 0x18 /* shift display left */
|
||||
#define LCD_MOVE_DISP_RIGHT 0x1C /* shift display right */
|
||||
|
||||
/* function set: set interface data length and number of display lines */
|
||||
#define LCD_FUNCTION_4BIT_1LINE 0x20 /* 4-bit interface, single line, 5x7 dots */
|
||||
#define LCD_FUNCTION_4BIT_2LINES 0x28 /* 4-bit interface, dual line, 5x7 dots */
|
||||
#define LCD_FUNCTION_8BIT_1LINE 0x30 /* 8-bit interface, single line, 5x7 dots */
|
||||
#define LCD_FUNCTION_8BIT_2LINES 0x38 /* 8-bit interface, dual line, 5x7 dots */
|
||||
|
||||
#define LCD_MODE_DEFAULT ((1 << LCD_ENTRY_MODE) | (1 << LCD_ENTRY_INC))
|
||||
|
||||
/**
|
||||
* @name Functions
|
||||
*/
|
||||
|
||||
/**
|
||||
@brief Initialize display and select type of cursor
|
||||
@param dispAttr \b LCD_DISP_OFF display off\n
|
||||
\b LCD_DISP_ON display on, cursor off\n
|
||||
\b LCD_DISP_ON_CURSOR display on, cursor on\n
|
||||
\b LCD_DISP_ON_CURSOR_BLINK display on, cursor on flashing
|
||||
@return none
|
||||
*/
|
||||
extern void lcd_init(uint8_t dispAttr);
|
||||
|
||||
/**
|
||||
@brief Clear display and set cursor to home position
|
||||
@return none
|
||||
*/
|
||||
extern void lcd_clrscr(void);
|
||||
|
||||
/**
|
||||
@brief Set cursor to home position
|
||||
@return none
|
||||
*/
|
||||
extern void lcd_home(void);
|
||||
|
||||
/**
|
||||
@brief Set cursor to specified position
|
||||
|
||||
@param x horizontal position\n (0: left most position)
|
||||
@param y vertical position\n (0: first line)
|
||||
@return none
|
||||
*/
|
||||
extern void lcd_gotoxy(uint8_t x, uint8_t y);
|
||||
|
||||
/**
|
||||
@brief Display character at current cursor position
|
||||
@param c character to be displayed
|
||||
@return none
|
||||
*/
|
||||
extern void lcd_putc(char c);
|
||||
|
||||
/**
|
||||
@brief Display string without auto linefeed
|
||||
@param s string to be displayed
|
||||
@return none
|
||||
*/
|
||||
extern void lcd_puts(const char *s);
|
||||
|
||||
/**
|
||||
@brief Display string from program memory without auto linefeed
|
||||
@param progmem_s string from program memory be be displayed
|
||||
@return none
|
||||
@see lcd_puts_P
|
||||
*/
|
||||
extern void lcd_puts_p(const char *progmem_s);
|
||||
|
||||
/**
|
||||
@brief Send LCD controller instruction command
|
||||
@param cmd instruction to send to LCD controller, see HD44780 data sheet
|
||||
@return none
|
||||
*/
|
||||
extern void lcd_command(uint8_t cmd);
|
||||
|
||||
/**
|
||||
@brief Send data byte to LCD controller
|
||||
|
||||
Similar to lcd_putc(), but without interpreting LF
|
||||
@param data byte to send to LCD controller, see HD44780 data sheet
|
||||
@return none
|
||||
*/
|
||||
extern void lcd_data(uint8_t data);
|
||||
|
||||
/**
|
||||
@brief macros for automatically storing string constant in program memory
|
||||
*/
|
||||
#define lcd_puts_P(__s) lcd_puts_p(PSTR(__s))
|
||||
|
||||
/**@}*/
|
||||
241
platforms/avr/drivers/i2c_master.c
Normal file
241
platforms/avr/drivers/i2c_master.c
Normal file
|
|
@ -0,0 +1,241 @@
|
|||
/* Copyright (C) 2019 Elia Ritterbusch
|
||||
+
|
||||
* This program is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program. If not, see <https://www.gnu.org/licenses/>.
|
||||
*/
|
||||
/* Library made by: g4lvanix
|
||||
* GitHub repository: https://github.com/g4lvanix/I2C-master-lib
|
||||
*/
|
||||
|
||||
#include <avr/io.h>
|
||||
#include <util/twi.h>
|
||||
|
||||
#include "i2c_master.h"
|
||||
#include "timer.h"
|
||||
#include "wait.h"
|
||||
|
||||
#ifndef F_SCL
|
||||
# define F_SCL 400000UL // SCL frequency
|
||||
#endif
|
||||
|
||||
#ifndef I2C_START_RETRY_COUNT
|
||||
# define I2C_START_RETRY_COUNT 20
|
||||
#endif // I2C_START_RETRY_COUNT
|
||||
|
||||
#define TWBR_val (((F_CPU / F_SCL) - 16) / 2)
|
||||
|
||||
#define MAX(X, Y) ((X) > (Y) ? (X) : (Y))
|
||||
|
||||
void i2c_init(void) {
|
||||
TWSR = 0; /* no prescaler */
|
||||
TWBR = (uint8_t)TWBR_val;
|
||||
|
||||
#ifdef __AVR_ATmega32A__
|
||||
// set pull-up resistors on I2C bus pins
|
||||
PORTC |= 0b11;
|
||||
|
||||
// enable TWI (two-wire interface)
|
||||
TWCR |= (1 << TWEN);
|
||||
|
||||
// enable TWI interrupt and slave address ACK
|
||||
TWCR |= (1 << TWIE);
|
||||
TWCR |= (1 << TWEA);
|
||||
#endif
|
||||
}
|
||||
|
||||
static i2c_status_t i2c_start_impl(uint8_t address, uint16_t timeout) {
|
||||
// reset TWI control register
|
||||
TWCR = 0;
|
||||
// transmit START condition
|
||||
TWCR = (1 << TWINT) | (1 << TWSTA) | (1 << TWEN);
|
||||
|
||||
uint16_t timeout_timer = timer_read();
|
||||
while (!(TWCR & (1 << TWINT))) {
|
||||
if ((timeout != I2C_TIMEOUT_INFINITE) && ((timer_read() - timeout_timer) >= timeout)) {
|
||||
return I2C_STATUS_TIMEOUT;
|
||||
}
|
||||
}
|
||||
|
||||
// check if the start condition was successfully transmitted
|
||||
if (((TW_STATUS & 0xF8) != TW_START) && ((TW_STATUS & 0xF8) != TW_REP_START)) {
|
||||
return I2C_STATUS_ERROR;
|
||||
}
|
||||
|
||||
// load slave address into data register
|
||||
TWDR = address;
|
||||
// start transmission of address
|
||||
TWCR = (1 << TWINT) | (1 << TWEN);
|
||||
|
||||
timeout_timer = timer_read();
|
||||
while (!(TWCR & (1 << TWINT))) {
|
||||
if ((timeout != I2C_TIMEOUT_INFINITE) && ((timer_read() - timeout_timer) >= timeout)) {
|
||||
return I2C_STATUS_TIMEOUT;
|
||||
}
|
||||
}
|
||||
|
||||
// check if the device has acknowledged the READ / WRITE mode
|
||||
uint8_t twst = TW_STATUS & 0xF8;
|
||||
if ((twst != TW_MT_SLA_ACK) && (twst != TW_MR_SLA_ACK)) {
|
||||
return I2C_STATUS_ERROR;
|
||||
}
|
||||
|
||||
return I2C_STATUS_SUCCESS;
|
||||
}
|
||||
|
||||
i2c_status_t i2c_start(uint8_t address, uint16_t timeout) {
|
||||
// Retry i2c_start_impl a bunch times in case the remote side has interrupts disabled.
|
||||
uint16_t timeout_timer = timer_read();
|
||||
uint16_t time_slice = MAX(1, (timeout == (I2C_TIMEOUT_INFINITE)) ? 5 : (timeout / (I2C_START_RETRY_COUNT))); // if it's infinite, wait 1ms between attempts, otherwise split up the entire timeout into the number of retries
|
||||
i2c_status_t status;
|
||||
do {
|
||||
status = i2c_start_impl(address, time_slice);
|
||||
} while ((status < 0) && ((timeout == I2C_TIMEOUT_INFINITE) || (timer_elapsed(timeout_timer) < timeout)));
|
||||
return status;
|
||||
}
|
||||
|
||||
i2c_status_t i2c_write(uint8_t data, uint16_t timeout) {
|
||||
// load data into data register
|
||||
TWDR = data;
|
||||
// start transmission of data
|
||||
TWCR = (1 << TWINT) | (1 << TWEN);
|
||||
|
||||
uint16_t timeout_timer = timer_read();
|
||||
while (!(TWCR & (1 << TWINT))) {
|
||||
if ((timeout != I2C_TIMEOUT_INFINITE) && ((timer_read() - timeout_timer) >= timeout)) {
|
||||
return I2C_STATUS_TIMEOUT;
|
||||
}
|
||||
}
|
||||
|
||||
if ((TW_STATUS & 0xF8) != TW_MT_DATA_ACK) {
|
||||
return I2C_STATUS_ERROR;
|
||||
}
|
||||
|
||||
return I2C_STATUS_SUCCESS;
|
||||
}
|
||||
|
||||
int16_t i2c_read_ack(uint16_t timeout) {
|
||||
// start TWI module and acknowledge data after reception
|
||||
TWCR = (1 << TWINT) | (1 << TWEN) | (1 << TWEA);
|
||||
|
||||
uint16_t timeout_timer = timer_read();
|
||||
while (!(TWCR & (1 << TWINT))) {
|
||||
if ((timeout != I2C_TIMEOUT_INFINITE) && ((timer_read() - timeout_timer) >= timeout)) {
|
||||
return I2C_STATUS_TIMEOUT;
|
||||
}
|
||||
}
|
||||
|
||||
// return received data from TWDR
|
||||
return TWDR;
|
||||
}
|
||||
|
||||
int16_t i2c_read_nack(uint16_t timeout) {
|
||||
// start receiving without acknowledging reception
|
||||
TWCR = (1 << TWINT) | (1 << TWEN);
|
||||
|
||||
uint16_t timeout_timer = timer_read();
|
||||
while (!(TWCR & (1 << TWINT))) {
|
||||
if ((timeout != I2C_TIMEOUT_INFINITE) && ((timer_read() - timeout_timer) >= timeout)) {
|
||||
return I2C_STATUS_TIMEOUT;
|
||||
}
|
||||
}
|
||||
|
||||
// return received data from TWDR
|
||||
return TWDR;
|
||||
}
|
||||
|
||||
i2c_status_t i2c_transmit(uint8_t address, const uint8_t* data, uint16_t length, uint16_t timeout) {
|
||||
i2c_status_t status = i2c_start(address | I2C_WRITE, timeout);
|
||||
|
||||
for (uint16_t i = 0; i < length && status >= 0; i++) {
|
||||
status = i2c_write(data[i], timeout);
|
||||
}
|
||||
|
||||
i2c_stop();
|
||||
|
||||
return status;
|
||||
}
|
||||
|
||||
i2c_status_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout) {
|
||||
i2c_status_t status = i2c_start(address | I2C_READ, timeout);
|
||||
|
||||
for (uint16_t i = 0; i < (length - 1) && status >= 0; i++) {
|
||||
status = i2c_read_ack(timeout);
|
||||
if (status >= 0) {
|
||||
data[i] = status;
|
||||
}
|
||||
}
|
||||
|
||||
if (status >= 0) {
|
||||
status = i2c_read_nack(timeout);
|
||||
if (status >= 0) {
|
||||
data[(length - 1)] = status;
|
||||
}
|
||||
}
|
||||
|
||||
i2c_stop();
|
||||
|
||||
return (status < 0) ? status : I2C_STATUS_SUCCESS;
|
||||
}
|
||||
|
||||
i2c_status_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, const uint8_t* data, uint16_t length, uint16_t timeout) {
|
||||
i2c_status_t status = i2c_start(devaddr | 0x00, timeout);
|
||||
if (status >= 0) {
|
||||
status = i2c_write(regaddr, timeout);
|
||||
|
||||
for (uint16_t i = 0; i < length && status >= 0; i++) {
|
||||
status = i2c_write(data[i], timeout);
|
||||
}
|
||||
}
|
||||
|
||||
i2c_stop();
|
||||
|
||||
return status;
|
||||
}
|
||||
|
||||
i2c_status_t i2c_readReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout) {
|
||||
i2c_status_t status = i2c_start(devaddr, timeout);
|
||||
if (status < 0) {
|
||||
goto error;
|
||||
}
|
||||
|
||||
status = i2c_write(regaddr, timeout);
|
||||
if (status < 0) {
|
||||
goto error;
|
||||
}
|
||||
|
||||
status = i2c_start(devaddr | 0x01, timeout);
|
||||
|
||||
for (uint16_t i = 0; i < (length - 1) && status >= 0; i++) {
|
||||
status = i2c_read_ack(timeout);
|
||||
if (status >= 0) {
|
||||
data[i] = status;
|
||||
}
|
||||
}
|
||||
|
||||
if (status >= 0) {
|
||||
status = i2c_read_nack(timeout);
|
||||
if (status >= 0) {
|
||||
data[(length - 1)] = status;
|
||||
}
|
||||
}
|
||||
|
||||
error:
|
||||
i2c_stop();
|
||||
|
||||
return (status < 0) ? status : I2C_STATUS_SUCCESS;
|
||||
}
|
||||
|
||||
void i2c_stop(void) {
|
||||
// transmit STOP condition
|
||||
TWCR = (1 << TWINT) | (1 << TWEN) | (1 << TWSTO);
|
||||
}
|
||||
43
platforms/avr/drivers/i2c_master.h
Normal file
43
platforms/avr/drivers/i2c_master.h
Normal file
|
|
@ -0,0 +1,43 @@
|
|||
/* Copyright (C) 2019 Elia Ritterbusch
|
||||
+
|
||||
* This program is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program. If not, see <https://www.gnu.org/licenses/>.
|
||||
*/
|
||||
/* Library made by: g4lvanix
|
||||
* GitHub repository: https://github.com/g4lvanix/I2C-master-lib
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#define I2C_READ 0x01
|
||||
#define I2C_WRITE 0x00
|
||||
|
||||
typedef int16_t i2c_status_t;
|
||||
|
||||
#define I2C_STATUS_SUCCESS (0)
|
||||
#define I2C_STATUS_ERROR (-1)
|
||||
#define I2C_STATUS_TIMEOUT (-2)
|
||||
|
||||
#define I2C_TIMEOUT_IMMEDIATE (0)
|
||||
#define I2C_TIMEOUT_INFINITE (0xFFFF)
|
||||
|
||||
void i2c_init(void);
|
||||
i2c_status_t i2c_start(uint8_t address, uint16_t timeout);
|
||||
i2c_status_t i2c_write(uint8_t data, uint16_t timeout);
|
||||
int16_t i2c_read_ack(uint16_t timeout);
|
||||
int16_t i2c_read_nack(uint16_t timeout);
|
||||
i2c_status_t i2c_transmit(uint8_t address, const uint8_t* data, uint16_t length, uint16_t timeout);
|
||||
i2c_status_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout);
|
||||
i2c_status_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, const uint8_t* data, uint16_t length, uint16_t timeout);
|
||||
i2c_status_t i2c_readReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout);
|
||||
void i2c_stop(void);
|
||||
111
platforms/avr/drivers/i2c_slave.c
Normal file
111
platforms/avr/drivers/i2c_slave.c
Normal file
|
|
@ -0,0 +1,111 @@
|
|||
/* Copyright (C) 2019 Elia Ritterbusch
|
||||
+
|
||||
* This program is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program. If not, see <https://www.gnu.org/licenses/>.
|
||||
*/
|
||||
/* Library made by: g4lvanix
|
||||
* GitHub repository: https://github.com/g4lvanix/I2C-slave-lib
|
||||
*/
|
||||
|
||||
#include <stddef.h>
|
||||
#include <avr/io.h>
|
||||
#include <util/twi.h>
|
||||
#include <avr/interrupt.h>
|
||||
#include <stdbool.h>
|
||||
|
||||
#include "i2c_slave.h"
|
||||
|
||||
#if defined(USE_I2C) && defined(SPLIT_COMMON_TRANSACTIONS)
|
||||
# include "transactions.h"
|
||||
|
||||
static volatile bool is_callback_executor = false;
|
||||
#endif // defined(USE_I2C) && defined(SPLIT_COMMON_TRANSACTIONS)
|
||||
|
||||
volatile uint8_t i2c_slave_reg[I2C_SLAVE_REG_COUNT];
|
||||
|
||||
static volatile uint8_t buffer_address;
|
||||
static volatile bool slave_has_register_set = false;
|
||||
|
||||
void i2c_slave_init(uint8_t address) {
|
||||
// load address into TWI address register
|
||||
TWAR = address;
|
||||
// set the TWCR to enable address matching and enable TWI, clear TWINT, enable TWI interrupt
|
||||
TWCR = (1 << TWIE) | (1 << TWEA) | (1 << TWINT) | (1 << TWEN);
|
||||
}
|
||||
|
||||
void i2c_slave_stop(void) {
|
||||
// clear acknowledge and enable bits
|
||||
TWCR &= ~((1 << TWEA) | (1 << TWEN));
|
||||
}
|
||||
|
||||
ISR(TWI_vect) {
|
||||
uint8_t ack = 1;
|
||||
|
||||
switch (TW_STATUS) {
|
||||
case TW_SR_SLA_ACK:
|
||||
// The device is now a slave receiver
|
||||
slave_has_register_set = false;
|
||||
#if defined(USE_I2C) && defined(SPLIT_COMMON_TRANSACTIONS)
|
||||
is_callback_executor = false;
|
||||
#endif // defined(USE_I2C) && defined(SPLIT_COMMON_TRANSACTIONS)
|
||||
break;
|
||||
|
||||
case TW_SR_DATA_ACK:
|
||||
// This device is a slave receiver and has received data
|
||||
// First byte is the location then the bytes will be writen in buffer with auto-increment
|
||||
if (!slave_has_register_set) {
|
||||
buffer_address = TWDR;
|
||||
|
||||
if (buffer_address >= I2C_SLAVE_REG_COUNT) { // address out of bounds dont ack
|
||||
ack = 0;
|
||||
buffer_address = 0;
|
||||
}
|
||||
slave_has_register_set = true; // address has been received now fill in buffer
|
||||
|
||||
#if defined(USE_I2C) && defined(SPLIT_COMMON_TRANSACTIONS)
|
||||
// Work out if we're attempting to execute a callback
|
||||
is_callback_executor = buffer_address == split_transaction_table[I2C_EXECUTE_CALLBACK].initiator2target_offset;
|
||||
#endif // defined(USE_I2C) && defined(SPLIT_COMMON_TRANSACTIONS)
|
||||
} else {
|
||||
i2c_slave_reg[buffer_address] = TWDR;
|
||||
buffer_address++;
|
||||
|
||||
#if defined(USE_I2C) && defined(SPLIT_COMMON_TRANSACTIONS)
|
||||
// If we're intending to execute a transaction callback, do so, as we've just received the transaction ID
|
||||
if (is_callback_executor) {
|
||||
split_transaction_desc_t *trans = &split_transaction_table[split_shmem->transaction_id];
|
||||
if (trans->slave_callback) {
|
||||
trans->slave_callback(trans->initiator2target_buffer_size, split_trans_initiator2target_buffer(trans), trans->target2initiator_buffer_size, split_trans_target2initiator_buffer(trans));
|
||||
}
|
||||
}
|
||||
#endif // defined(USE_I2C) && defined(SPLIT_COMMON_TRANSACTIONS)
|
||||
}
|
||||
break;
|
||||
|
||||
case TW_ST_SLA_ACK:
|
||||
case TW_ST_DATA_ACK:
|
||||
// This device is a slave transmitter and master has requested data
|
||||
TWDR = i2c_slave_reg[buffer_address];
|
||||
buffer_address++;
|
||||
break;
|
||||
|
||||
case TW_BUS_ERROR:
|
||||
// We got an error, reset i2c
|
||||
TWCR = 0;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
|
||||
// Reset i2c state machine to be ready for next interrupt
|
||||
TWCR |= (1 << TWIE) | (1 << TWINT) | (ack << TWEA) | (1 << TWEN);
|
||||
}
|
||||
41
platforms/avr/drivers/i2c_slave.h
Normal file
41
platforms/avr/drivers/i2c_slave.h
Normal file
|
|
@ -0,0 +1,41 @@
|
|||
/* Copyright (C) 2019 Elia Ritterbusch
|
||||
+
|
||||
* This program is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program. If not, see <https://www.gnu.org/licenses/>.
|
||||
*/
|
||||
/* Library made by: g4lvanix
|
||||
* GitHub repository: https://github.com/g4lvanix/I2C-slave-lib
|
||||
|
||||
Info: Inititate the library by giving the required address.
|
||||
Read or write to the necessary buffer according to the opperation.
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#ifndef I2C_SLAVE_REG_COUNT
|
||||
|
||||
# if defined(USE_I2C) && defined(SPLIT_COMMON_TRANSACTIONS)
|
||||
# include "transport.h"
|
||||
# define I2C_SLAVE_REG_COUNT sizeof(split_shared_memory_t)
|
||||
# else // defined(USE_I2C) && defined(SPLIT_COMMON_TRANSACTIONS)
|
||||
# define I2C_SLAVE_REG_COUNT 30
|
||||
# endif // defined(USE_I2C) && defined(SPLIT_COMMON_TRANSACTIONS)
|
||||
|
||||
#endif // I2C_SLAVE_REG_COUNT
|
||||
|
||||
_Static_assert(I2C_SLAVE_REG_COUNT < 256, "I2C target registers must be single byte");
|
||||
|
||||
extern volatile uint8_t i2c_slave_reg[I2C_SLAVE_REG_COUNT];
|
||||
|
||||
void i2c_slave_init(uint8_t address);
|
||||
void i2c_slave_stop(void);
|
||||
529
platforms/avr/drivers/serial.c
Normal file
529
platforms/avr/drivers/serial.c
Normal file
|
|
@ -0,0 +1,529 @@
|
|||
/*
|
||||
* WARNING: be careful changing this code, it is very timing dependent
|
||||
*
|
||||
* 2018-10-28 checked
|
||||
* avr-gcc 4.9.2
|
||||
* avr-gcc 5.4.0
|
||||
* avr-gcc 7.3.0
|
||||
*/
|
||||
|
||||
#ifndef F_CPU
|
||||
# define F_CPU 16000000
|
||||
#endif
|
||||
|
||||
#include <avr/io.h>
|
||||
#include <avr/interrupt.h>
|
||||
#include <util/delay.h>
|
||||
#include <stddef.h>
|
||||
#include <stdbool.h>
|
||||
#include "serial.h"
|
||||
|
||||
#ifdef SOFT_SERIAL_PIN
|
||||
|
||||
# if !(defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB647__) || defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB1287__) || defined(__AVR_AT90USB162__) || defined(__AVR_ATmega16U2__) || defined(__AVR_ATmega32U2__) || defined(__AVR_ATmega16U4__) || defined(__AVR_ATmega32U4__))
|
||||
# error serial.c is not supported for the currently selected MCU
|
||||
# endif
|
||||
// if using ATmega32U4/2, AT90USBxxx I2C, can not use PD0 and PD1 in soft serial.
|
||||
# if defined(__AVR_ATmega16U4__) || defined(__AVR_ATmega32U4__) || defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB647__) || defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB1287__)
|
||||
# if defined(USE_AVR_I2C) && (SOFT_SERIAL_PIN == D0 || SOFT_SERIAL_PIN == D1)
|
||||
# error Using I2C, so can not use PD0, PD1
|
||||
# endif
|
||||
# endif
|
||||
// PD0..PD3, common config
|
||||
# if SOFT_SERIAL_PIN == D0
|
||||
# define EIMSK_BIT _BV(INT0)
|
||||
# define EICRx_BIT (~(_BV(ISC00) | _BV(ISC01)))
|
||||
# define SERIAL_PIN_INTERRUPT INT0_vect
|
||||
# define EICRx EICRA
|
||||
# elif SOFT_SERIAL_PIN == D1
|
||||
# define EIMSK_BIT _BV(INT1)
|
||||
# define EICRx_BIT (~(_BV(ISC10) | _BV(ISC11)))
|
||||
# define SERIAL_PIN_INTERRUPT INT1_vect
|
||||
# define EICRx EICRA
|
||||
# elif SOFT_SERIAL_PIN == D2
|
||||
# define EIMSK_BIT _BV(INT2)
|
||||
# define EICRx_BIT (~(_BV(ISC20) | _BV(ISC21)))
|
||||
# define SERIAL_PIN_INTERRUPT INT2_vect
|
||||
# define EICRx EICRA
|
||||
# elif SOFT_SERIAL_PIN == D3
|
||||
# define EIMSK_BIT _BV(INT3)
|
||||
# define EICRx_BIT (~(_BV(ISC30) | _BV(ISC31)))
|
||||
# define SERIAL_PIN_INTERRUPT INT3_vect
|
||||
# define EICRx EICRA
|
||||
# endif
|
||||
|
||||
// ATmegaxxU2/AT90USB162 specific config
|
||||
# if defined(__AVR_ATmega16U2__) || defined(__AVR_ATmega32U2__) || defined(__AVR_AT90USB162__)
|
||||
// PD4(INT5), PD6(INT6), PD7(INT7), PC7(INT4)
|
||||
# if SOFT_SERIAL_PIN == D4
|
||||
# define EIMSK_BIT _BV(INT5)
|
||||
# define EICRx_BIT (~(_BV(ISC50) | _BV(ISC51)))
|
||||
# define SERIAL_PIN_INTERRUPT INT5_vect
|
||||
# define EICRx EICRB
|
||||
# elif SOFT_SERIAL_PIN == D6
|
||||
# define EIMSK_BIT _BV(INT6)
|
||||
# define EICRx_BIT (~(_BV(ISC60) | _BV(ISC61)))
|
||||
# define SERIAL_PIN_INTERRUPT INT6_vect
|
||||
# define EICRx EICRB
|
||||
# elif SOFT_SERIAL_PIN == D7
|
||||
# define EIMSK_BIT _BV(INT7)
|
||||
# define EICRx_BIT (~(_BV(ISC70) | _BV(ISC71)))
|
||||
# define SERIAL_PIN_INTERRUPT INT7_vect
|
||||
# define EICRx EICRB
|
||||
# elif SOFT_SERIAL_PIN == C7
|
||||
# define EIMSK_BIT _BV(INT4)
|
||||
# define EICRx_BIT (~(_BV(ISC40) | _BV(ISC41)))
|
||||
# define SERIAL_PIN_INTERRUPT INT4_vect
|
||||
# define EICRx EICRB
|
||||
# endif
|
||||
# endif
|
||||
|
||||
// ATmegaxxU4 specific config
|
||||
# if defined(__AVR_ATmega16U4__) || defined(__AVR_ATmega32U4__)
|
||||
// PE6(INT6)
|
||||
# if SOFT_SERIAL_PIN == E6
|
||||
# define EIMSK_BIT _BV(INT6)
|
||||
# define EICRx_BIT (~(_BV(ISC60) | _BV(ISC61)))
|
||||
# define SERIAL_PIN_INTERRUPT INT6_vect
|
||||
# define EICRx EICRB
|
||||
# endif
|
||||
# endif
|
||||
|
||||
// AT90USBxxx specific config
|
||||
# if defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB647__) || defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB1287__)
|
||||
// PE4..PE7(INT4..INT7)
|
||||
# if SOFT_SERIAL_PIN == E4
|
||||
# define EIMSK_BIT _BV(INT4)
|
||||
# define EICRx_BIT (~(_BV(ISC40) | _BV(ISC41)))
|
||||
# define SERIAL_PIN_INTERRUPT INT4_vect
|
||||
# define EICRx EICRB
|
||||
# elif SOFT_SERIAL_PIN == E5
|
||||
# define EIMSK_BIT _BV(INT5)
|
||||
# define EICRx_BIT (~(_BV(ISC50) | _BV(ISC51)))
|
||||
# define SERIAL_PIN_INTERRUPT INT5_vect
|
||||
# define EICRx EICRB
|
||||
# elif SOFT_SERIAL_PIN == E6
|
||||
# define EIMSK_BIT _BV(INT6)
|
||||
# define EICRx_BIT (~(_BV(ISC60) | _BV(ISC61)))
|
||||
# define SERIAL_PIN_INTERRUPT INT6_vect
|
||||
# define EICRx EICRB
|
||||
# elif SOFT_SERIAL_PIN == E7
|
||||
# define EIMSK_BIT _BV(INT7)
|
||||
# define EICRx_BIT (~(_BV(ISC70) | _BV(ISC71)))
|
||||
# define SERIAL_PIN_INTERRUPT INT7_vect
|
||||
# define EICRx EICRB
|
||||
# endif
|
||||
# endif
|
||||
|
||||
# ifndef SERIAL_PIN_INTERRUPT
|
||||
# error invalid SOFT_SERIAL_PIN value
|
||||
# endif
|
||||
|
||||
# define setPinInputHigh(pin) (DDRx_ADDRESS(pin) &= ~_BV((pin)&0xF), PORTx_ADDRESS(pin) |= _BV((pin)&0xF))
|
||||
# define setPinOutput(pin) (DDRx_ADDRESS(pin) |= _BV((pin)&0xF))
|
||||
# define writePinHigh(pin) (PORTx_ADDRESS(pin) |= _BV((pin)&0xF))
|
||||
# define writePinLow(pin) (PORTx_ADDRESS(pin) &= ~_BV((pin)&0xF))
|
||||
# define readPin(pin) ((bool)(PINx_ADDRESS(pin) & _BV((pin)&0xF)))
|
||||
|
||||
# define ALWAYS_INLINE __attribute__((always_inline))
|
||||
# define NO_INLINE __attribute__((noinline))
|
||||
# define _delay_sub_us(x) __builtin_avr_delay_cycles(x)
|
||||
|
||||
// parity check
|
||||
# define ODD_PARITY 1
|
||||
# define EVEN_PARITY 0
|
||||
# define PARITY EVEN_PARITY
|
||||
|
||||
# ifdef SERIAL_DELAY
|
||||
// custom setup in config.h
|
||||
// #define TID_SEND_ADJUST 2
|
||||
// #define SERIAL_DELAY 6 // micro sec
|
||||
// #define READ_WRITE_START_ADJUST 30 // cycles
|
||||
// #define READ_WRITE_WIDTH_ADJUST 8 // cycles
|
||||
# else
|
||||
// ============ Standard setups ============
|
||||
|
||||
# ifndef SELECT_SOFT_SERIAL_SPEED
|
||||
# define SELECT_SOFT_SERIAL_SPEED 1
|
||||
// 0: about 189kbps (Experimental only)
|
||||
// 1: about 137kbps (default)
|
||||
// 2: about 75kbps
|
||||
// 3: about 39kbps
|
||||
// 4: about 26kbps
|
||||
// 5: about 20kbps
|
||||
# endif
|
||||
|
||||
# if __GNUC__ < 6
|
||||
# define TID_SEND_ADJUST 14
|
||||
# else
|
||||
# define TID_SEND_ADJUST 2
|
||||
# endif
|
||||
|
||||
# if SELECT_SOFT_SERIAL_SPEED == 0
|
||||
// Very High speed
|
||||
# define SERIAL_DELAY 4 // micro sec
|
||||
# if __GNUC__ < 6
|
||||
# define READ_WRITE_START_ADJUST 33 // cycles
|
||||
# define READ_WRITE_WIDTH_ADJUST 3 // cycles
|
||||
# else
|
||||
# define READ_WRITE_START_ADJUST 34 // cycles
|
||||
# define READ_WRITE_WIDTH_ADJUST 7 // cycles
|
||||
# endif
|
||||
# elif SELECT_SOFT_SERIAL_SPEED == 1
|
||||
// High speed
|
||||
# define SERIAL_DELAY 6 // micro sec
|
||||
# if __GNUC__ < 6
|
||||
# define READ_WRITE_START_ADJUST 30 // cycles
|
||||
# define READ_WRITE_WIDTH_ADJUST 3 // cycles
|
||||
# else
|
||||
# define READ_WRITE_START_ADJUST 33 // cycles
|
||||
# define READ_WRITE_WIDTH_ADJUST 7 // cycles
|
||||
# endif
|
||||
# elif SELECT_SOFT_SERIAL_SPEED == 2
|
||||
// Middle speed
|
||||
# define SERIAL_DELAY 12 // micro sec
|
||||
# define READ_WRITE_START_ADJUST 30 // cycles
|
||||
# if __GNUC__ < 6
|
||||
# define READ_WRITE_WIDTH_ADJUST 3 // cycles
|
||||
# else
|
||||
# define READ_WRITE_WIDTH_ADJUST 7 // cycles
|
||||
# endif
|
||||
# elif SELECT_SOFT_SERIAL_SPEED == 3
|
||||
// Low speed
|
||||
# define SERIAL_DELAY 24 // micro sec
|
||||
# define READ_WRITE_START_ADJUST 30 // cycles
|
||||
# if __GNUC__ < 6
|
||||
# define READ_WRITE_WIDTH_ADJUST 3 // cycles
|
||||
# else
|
||||
# define READ_WRITE_WIDTH_ADJUST 7 // cycles
|
||||
# endif
|
||||
# elif SELECT_SOFT_SERIAL_SPEED == 4
|
||||
// Very Low speed
|
||||
# define SERIAL_DELAY 36 // micro sec
|
||||
# define READ_WRITE_START_ADJUST 30 // cycles
|
||||
# if __GNUC__ < 6
|
||||
# define READ_WRITE_WIDTH_ADJUST 3 // cycles
|
||||
# else
|
||||
# define READ_WRITE_WIDTH_ADJUST 7 // cycles
|
||||
# endif
|
||||
# elif SELECT_SOFT_SERIAL_SPEED == 5
|
||||
// Ultra Low speed
|
||||
# define SERIAL_DELAY 48 // micro sec
|
||||
# define READ_WRITE_START_ADJUST 30 // cycles
|
||||
# if __GNUC__ < 6
|
||||
# define READ_WRITE_WIDTH_ADJUST 3 // cycles
|
||||
# else
|
||||
# define READ_WRITE_WIDTH_ADJUST 7 // cycles
|
||||
# endif
|
||||
# else
|
||||
# error invalid SELECT_SOFT_SERIAL_SPEED value
|
||||
# endif /* SELECT_SOFT_SERIAL_SPEED */
|
||||
# endif /* SERIAL_DELAY */
|
||||
|
||||
# define SERIAL_DELAY_HALF1 (SERIAL_DELAY / 2)
|
||||
# define SERIAL_DELAY_HALF2 (SERIAL_DELAY - SERIAL_DELAY / 2)
|
||||
|
||||
# define SLAVE_INT_WIDTH_US 1
|
||||
# define SLAVE_INT_ACK_WIDTH_UNIT 2
|
||||
# define SLAVE_INT_ACK_WIDTH 4
|
||||
|
||||
inline static void serial_delay(void) ALWAYS_INLINE;
|
||||
inline static void serial_delay(void) { _delay_us(SERIAL_DELAY); }
|
||||
|
||||
inline static void serial_delay_half1(void) ALWAYS_INLINE;
|
||||
inline static void serial_delay_half1(void) { _delay_us(SERIAL_DELAY_HALF1); }
|
||||
|
||||
inline static void serial_delay_half2(void) ALWAYS_INLINE;
|
||||
inline static void serial_delay_half2(void) { _delay_us(SERIAL_DELAY_HALF2); }
|
||||
|
||||
inline static void serial_output(void) ALWAYS_INLINE;
|
||||
inline static void serial_output(void) { setPinOutput(SOFT_SERIAL_PIN); }
|
||||
|
||||
// make the serial pin an input with pull-up resistor
|
||||
inline static void serial_input_with_pullup(void) ALWAYS_INLINE;
|
||||
inline static void serial_input_with_pullup(void) { setPinInputHigh(SOFT_SERIAL_PIN); }
|
||||
|
||||
inline static uint8_t serial_read_pin(void) ALWAYS_INLINE;
|
||||
inline static uint8_t serial_read_pin(void) { return !!readPin(SOFT_SERIAL_PIN); }
|
||||
|
||||
inline static void serial_low(void) ALWAYS_INLINE;
|
||||
inline static void serial_low(void) { writePinLow(SOFT_SERIAL_PIN); }
|
||||
|
||||
inline static void serial_high(void) ALWAYS_INLINE;
|
||||
inline static void serial_high(void) { writePinHigh(SOFT_SERIAL_PIN); }
|
||||
|
||||
void soft_serial_initiator_init(void) {
|
||||
serial_output();
|
||||
serial_high();
|
||||
}
|
||||
|
||||
void soft_serial_target_init(void) {
|
||||
serial_input_with_pullup();
|
||||
|
||||
// Enable INT0-INT7
|
||||
EIMSK |= EIMSK_BIT;
|
||||
EICRx &= EICRx_BIT;
|
||||
}
|
||||
|
||||
// Used by the sender to synchronize timing with the reciver.
|
||||
static void sync_recv(void) NO_INLINE;
|
||||
static void sync_recv(void) {
|
||||
for (uint8_t i = 0; i < SERIAL_DELAY * 5 && serial_read_pin(); i++) {
|
||||
}
|
||||
// This shouldn't hang if the target disconnects because the
|
||||
// serial line will float to high if the target does disconnect.
|
||||
while (!serial_read_pin())
|
||||
;
|
||||
}
|
||||
|
||||
// Used by the reciver to send a synchronization signal to the sender.
|
||||
static void sync_send(void) NO_INLINE;
|
||||
static void sync_send(void) {
|
||||
serial_low();
|
||||
serial_delay();
|
||||
serial_high();
|
||||
}
|
||||
|
||||
// Reads a byte from the serial line
|
||||
static uint8_t serial_read_chunk(uint8_t *pterrcount, uint8_t bit) NO_INLINE;
|
||||
static uint8_t serial_read_chunk(uint8_t *pterrcount, uint8_t bit) {
|
||||
uint8_t byte, i, p, pb;
|
||||
|
||||
_delay_sub_us(READ_WRITE_START_ADJUST);
|
||||
for (i = 0, byte = 0, p = PARITY; i < bit; i++) {
|
||||
serial_delay_half1(); // read the middle of pulses
|
||||
if (serial_read_pin()) {
|
||||
byte = (byte << 1) | 1;
|
||||
p ^= 1;
|
||||
} else {
|
||||
byte = (byte << 1) | 0;
|
||||
p ^= 0;
|
||||
}
|
||||
_delay_sub_us(READ_WRITE_WIDTH_ADJUST);
|
||||
serial_delay_half2();
|
||||
}
|
||||
/* recive parity bit */
|
||||
serial_delay_half1(); // read the middle of pulses
|
||||
pb = serial_read_pin();
|
||||
_delay_sub_us(READ_WRITE_WIDTH_ADJUST);
|
||||
serial_delay_half2();
|
||||
|
||||
*pterrcount += (p != pb) ? 1 : 0;
|
||||
|
||||
return byte;
|
||||
}
|
||||
|
||||
// Sends a byte with MSB ordering
|
||||
void serial_write_chunk(uint8_t data, uint8_t bit) NO_INLINE;
|
||||
void serial_write_chunk(uint8_t data, uint8_t bit) {
|
||||
uint8_t b, p;
|
||||
for (p = PARITY, b = 1 << (bit - 1); b; b >>= 1) {
|
||||
if (data & b) {
|
||||
serial_high();
|
||||
p ^= 1;
|
||||
} else {
|
||||
serial_low();
|
||||
p ^= 0;
|
||||
}
|
||||
serial_delay();
|
||||
}
|
||||
/* send parity bit */
|
||||
if (p & 1) {
|
||||
serial_high();
|
||||
} else {
|
||||
serial_low();
|
||||
}
|
||||
serial_delay();
|
||||
|
||||
serial_low(); // sync_send() / senc_recv() need raise edge
|
||||
}
|
||||
|
||||
static void serial_send_packet(uint8_t *buffer, uint8_t size) NO_INLINE;
|
||||
static void serial_send_packet(uint8_t *buffer, uint8_t size) {
|
||||
for (uint8_t i = 0; i < size; ++i) {
|
||||
uint8_t data;
|
||||
data = buffer[i];
|
||||
sync_send();
|
||||
serial_write_chunk(data, 8);
|
||||
}
|
||||
}
|
||||
|
||||
static uint8_t serial_recive_packet(uint8_t *buffer, uint8_t size) NO_INLINE;
|
||||
static uint8_t serial_recive_packet(uint8_t *buffer, uint8_t size) {
|
||||
uint8_t pecount = 0;
|
||||
for (uint8_t i = 0; i < size; ++i) {
|
||||
uint8_t data;
|
||||
sync_recv();
|
||||
data = serial_read_chunk(&pecount, 8);
|
||||
buffer[i] = data;
|
||||
}
|
||||
return pecount == 0;
|
||||
}
|
||||
|
||||
inline static void change_sender2reciver(void) {
|
||||
sync_send(); // 0
|
||||
serial_delay_half1(); // 1
|
||||
serial_low(); // 2
|
||||
serial_input_with_pullup(); // 2
|
||||
serial_delay_half1(); // 3
|
||||
}
|
||||
|
||||
inline static void change_reciver2sender(void) {
|
||||
sync_recv(); // 0
|
||||
serial_delay(); // 1
|
||||
serial_low(); // 3
|
||||
serial_output(); // 3
|
||||
serial_delay_half1(); // 4
|
||||
}
|
||||
|
||||
static inline uint8_t nibble_bits_count(uint8_t bits) {
|
||||
bits = (bits & 0x5) + (bits >> 1 & 0x5);
|
||||
bits = (bits & 0x3) + (bits >> 2 & 0x3);
|
||||
return bits;
|
||||
}
|
||||
|
||||
// interrupt handle to be used by the target device
|
||||
ISR(SERIAL_PIN_INTERRUPT) {
|
||||
// recive transaction table index
|
||||
uint8_t tid, bits;
|
||||
uint8_t pecount = 0;
|
||||
sync_recv();
|
||||
bits = serial_read_chunk(&pecount, 8);
|
||||
tid = bits >> 3;
|
||||
bits = (bits & 7) != (nibble_bits_count(tid) & 7);
|
||||
if (bits || pecount > 0 || tid > NUM_TOTAL_TRANSACTIONS) {
|
||||
return;
|
||||
}
|
||||
serial_delay_half1();
|
||||
|
||||
serial_high(); // response step1 low->high
|
||||
serial_output();
|
||||
_delay_sub_us(SLAVE_INT_ACK_WIDTH_UNIT * SLAVE_INT_ACK_WIDTH);
|
||||
split_transaction_desc_t *trans = &split_transaction_table[tid];
|
||||
serial_low(); // response step2 ack high->low
|
||||
|
||||
// If the transaction has a callback, we can execute it now
|
||||
if (trans->slave_callback) {
|
||||
trans->slave_callback(trans->initiator2target_buffer_size, split_trans_initiator2target_buffer(trans), trans->target2initiator_buffer_size, split_trans_target2initiator_buffer(trans));
|
||||
}
|
||||
|
||||
// target send phase
|
||||
if (trans->target2initiator_buffer_size > 0) serial_send_packet((uint8_t *)split_trans_target2initiator_buffer(trans), trans->target2initiator_buffer_size);
|
||||
// target switch to input
|
||||
change_sender2reciver();
|
||||
|
||||
// target recive phase
|
||||
if (trans->initiator2target_buffer_size > 0) {
|
||||
if (serial_recive_packet((uint8_t *)split_trans_initiator2target_buffer(trans), trans->initiator2target_buffer_size)) {
|
||||
*trans->status = TRANSACTION_ACCEPTED;
|
||||
} else {
|
||||
*trans->status = TRANSACTION_DATA_ERROR;
|
||||
}
|
||||
} else {
|
||||
*trans->status = TRANSACTION_ACCEPTED;
|
||||
}
|
||||
|
||||
sync_recv(); // weit initiator output to high
|
||||
}
|
||||
|
||||
/////////
|
||||
// start transaction by initiator
|
||||
//
|
||||
// int soft_serial_transaction(int sstd_index)
|
||||
//
|
||||
// Returns:
|
||||
// TRANSACTION_END
|
||||
// TRANSACTION_NO_RESPONSE
|
||||
// TRANSACTION_DATA_ERROR
|
||||
// this code is very time dependent, so we need to disable interrupts
|
||||
int soft_serial_transaction(int sstd_index) {
|
||||
if (sstd_index > NUM_TOTAL_TRANSACTIONS) return TRANSACTION_TYPE_ERROR;
|
||||
split_transaction_desc_t *trans = &split_transaction_table[sstd_index];
|
||||
|
||||
if (!trans->status) return TRANSACTION_TYPE_ERROR; // not registered
|
||||
|
||||
cli();
|
||||
|
||||
// signal to the target that we want to start a transaction
|
||||
serial_output();
|
||||
serial_low();
|
||||
_delay_us(SLAVE_INT_WIDTH_US);
|
||||
|
||||
// send transaction table index
|
||||
int tid = (sstd_index << 3) | (7 & nibble_bits_count(sstd_index));
|
||||
sync_send();
|
||||
_delay_sub_us(TID_SEND_ADJUST);
|
||||
serial_write_chunk(tid, 8);
|
||||
serial_delay_half1();
|
||||
|
||||
// wait for the target response (step1 low->high)
|
||||
serial_input_with_pullup();
|
||||
while (!serial_read_pin()) {
|
||||
_delay_sub_us(2);
|
||||
}
|
||||
|
||||
// check if the target is present (step2 high->low)
|
||||
for (int i = 0; serial_read_pin(); i++) {
|
||||
if (i > SLAVE_INT_ACK_WIDTH + 1) {
|
||||
// slave failed to pull the line low, assume not present
|
||||
serial_output();
|
||||
serial_high();
|
||||
*trans->status = TRANSACTION_NO_RESPONSE;
|
||||
sei();
|
||||
return TRANSACTION_NO_RESPONSE;
|
||||
}
|
||||
_delay_sub_us(SLAVE_INT_ACK_WIDTH_UNIT);
|
||||
}
|
||||
|
||||
// initiator recive phase
|
||||
// if the target is present syncronize with it
|
||||
if (trans->target2initiator_buffer_size > 0) {
|
||||
if (!serial_recive_packet((uint8_t *)split_trans_target2initiator_buffer(trans), trans->target2initiator_buffer_size)) {
|
||||
serial_output();
|
||||
serial_high();
|
||||
*trans->status = TRANSACTION_DATA_ERROR;
|
||||
sei();
|
||||
return TRANSACTION_DATA_ERROR;
|
||||
}
|
||||
}
|
||||
|
||||
// initiator switch to output
|
||||
change_reciver2sender();
|
||||
|
||||
// initiator send phase
|
||||
if (trans->initiator2target_buffer_size > 0) {
|
||||
serial_send_packet((uint8_t *)split_trans_initiator2target_buffer(trans), trans->initiator2target_buffer_size);
|
||||
}
|
||||
|
||||
// always, release the line when not in use
|
||||
sync_send();
|
||||
|
||||
*trans->status = TRANSACTION_END;
|
||||
sei();
|
||||
return TRANSACTION_END;
|
||||
}
|
||||
|
||||
int soft_serial_get_and_clean_status(int sstd_index) {
|
||||
split_transaction_desc_t *trans = &split_transaction_table[sstd_index];
|
||||
cli();
|
||||
int retval = *trans->status;
|
||||
*trans->status = 0;
|
||||
;
|
||||
sei();
|
||||
return retval;
|
||||
}
|
||||
#endif
|
||||
|
||||
// Helix serial.c history
|
||||
// 2018-1-29 fork from let's split and add PD2, modify sync_recv() (#2308, bceffdefc)
|
||||
// 2018-6-28 bug fix master to slave comm and speed up (#3255, 1038bbef4)
|
||||
// (adjusted with avr-gcc 4.9.2)
|
||||
// 2018-7-13 remove USE_SERIAL_PD2 macro (#3374, f30d6dd78)
|
||||
// (adjusted with avr-gcc 4.9.2)
|
||||
// 2018-8-11 add support multi-type transaction (#3608, feb5e4aae)
|
||||
// (adjusted with avr-gcc 4.9.2)
|
||||
// 2018-10-21 fix serial and RGB animation conflict (#4191, 4665e4fff)
|
||||
// (adjusted with avr-gcc 7.3.0)
|
||||
// 2018-10-28 re-adjust compiler depend value of delay (#4269, 8517f8a66)
|
||||
// (adjusted with avr-gcc 5.4.0, 7.3.0)
|
||||
// 2018-12-17 copy to TOP/quantum/split_common/ and remove backward compatibility code (#4669)
|
||||
180
platforms/avr/drivers/spi_master.c
Normal file
180
platforms/avr/drivers/spi_master.c
Normal file
|
|
@ -0,0 +1,180 @@
|
|||
/* Copyright 2020
|
||||
*
|
||||
* This program is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program. If not, see <https://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
#include "spi_master.h"
|
||||
|
||||
#include "timer.h"
|
||||
|
||||
#if defined(__AVR_AT90USB162__) || defined(__AVR_ATmega16U2__) || defined(__AVR_ATmega32U2__) || defined(__AVR_ATmega16U4__) || defined(__AVR_ATmega32U4__) || defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB647__) || defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB1287__)
|
||||
# define SPI_SCK_PIN B1
|
||||
# define SPI_MOSI_PIN B2
|
||||
# define SPI_MISO_PIN B3
|
||||
#elif defined(__AVR_ATmega32A__)
|
||||
# define SPI_SCK_PIN B7
|
||||
# define SPI_MOSI_PIN B5
|
||||
# define SPI_MISO_PIN B6
|
||||
#elif defined(__AVR_ATmega328P__) || defined(__AVR_ATmega328__)
|
||||
# define SPI_SCK_PIN B5
|
||||
# define SPI_MOSI_PIN B3
|
||||
# define SPI_MISO_PIN B4
|
||||
#endif
|
||||
|
||||
#ifndef SPI_TIMEOUT
|
||||
# define SPI_TIMEOUT 100
|
||||
#endif
|
||||
|
||||
static pin_t currentSlavePin = NO_PIN;
|
||||
static uint8_t currentSlaveConfig = 0;
|
||||
static bool currentSlave2X = false;
|
||||
|
||||
void spi_init(void) {
|
||||
writePinHigh(SPI_SS_PIN);
|
||||
setPinOutput(SPI_SCK_PIN);
|
||||
setPinOutput(SPI_MOSI_PIN);
|
||||
setPinInput(SPI_MISO_PIN);
|
||||
|
||||
SPCR = (_BV(SPE) | _BV(MSTR));
|
||||
}
|
||||
|
||||
bool spi_start(pin_t slavePin, bool lsbFirst, uint8_t mode, uint16_t divisor) {
|
||||
if (currentSlavePin != NO_PIN || slavePin == NO_PIN) {
|
||||
return false;
|
||||
}
|
||||
|
||||
currentSlaveConfig = 0;
|
||||
|
||||
if (lsbFirst) {
|
||||
currentSlaveConfig |= _BV(DORD);
|
||||
}
|
||||
|
||||
switch (mode) {
|
||||
case 1:
|
||||
currentSlaveConfig |= _BV(CPHA);
|
||||
break;
|
||||
case 2:
|
||||
currentSlaveConfig |= _BV(CPOL);
|
||||
break;
|
||||
case 3:
|
||||
currentSlaveConfig |= (_BV(CPOL) | _BV(CPHA));
|
||||
break;
|
||||
}
|
||||
|
||||
uint16_t roundedDivisor = 1;
|
||||
while (roundedDivisor < divisor) {
|
||||
roundedDivisor <<= 1;
|
||||
}
|
||||
|
||||
switch (roundedDivisor) {
|
||||
case 16:
|
||||
currentSlaveConfig |= _BV(SPR0);
|
||||
break;
|
||||
case 64:
|
||||
currentSlaveConfig |= _BV(SPR1);
|
||||
break;
|
||||
case 128:
|
||||
currentSlaveConfig |= (_BV(SPR1) | _BV(SPR0));
|
||||
break;
|
||||
case 2:
|
||||
currentSlave2X = true;
|
||||
break;
|
||||
case 8:
|
||||
currentSlave2X = true;
|
||||
currentSlaveConfig |= _BV(SPR0);
|
||||
break;
|
||||
case 32:
|
||||
currentSlave2X = true;
|
||||
currentSlaveConfig |= _BV(SPR1);
|
||||
break;
|
||||
}
|
||||
|
||||
SPCR |= currentSlaveConfig;
|
||||
if (currentSlave2X) {
|
||||
SPSR |= _BV(SPI2X);
|
||||
}
|
||||
currentSlavePin = slavePin;
|
||||
setPinOutput(currentSlavePin);
|
||||
writePinLow(currentSlavePin);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
spi_status_t spi_write(uint8_t data) {
|
||||
SPDR = data;
|
||||
|
||||
uint16_t timeout_timer = timer_read();
|
||||
while (!(SPSR & _BV(SPIF))) {
|
||||
if ((timer_read() - timeout_timer) >= SPI_TIMEOUT) {
|
||||
return SPI_STATUS_TIMEOUT;
|
||||
}
|
||||
}
|
||||
|
||||
return SPDR;
|
||||
}
|
||||
|
||||
spi_status_t spi_read() {
|
||||
SPDR = 0x00; // Dummy
|
||||
|
||||
uint16_t timeout_timer = timer_read();
|
||||
while (!(SPSR & _BV(SPIF))) {
|
||||
if ((timer_read() - timeout_timer) >= SPI_TIMEOUT) {
|
||||
return SPI_STATUS_TIMEOUT;
|
||||
}
|
||||
}
|
||||
|
||||
return SPDR;
|
||||
}
|
||||
|
||||
spi_status_t spi_transmit(const uint8_t *data, uint16_t length) {
|
||||
spi_status_t status;
|
||||
|
||||
for (uint16_t i = 0; i < length; i++) {
|
||||
status = spi_write(data[i]);
|
||||
|
||||
if (status < 0) {
|
||||
return status;
|
||||
}
|
||||
}
|
||||
|
||||
return SPI_STATUS_SUCCESS;
|
||||
}
|
||||
|
||||
spi_status_t spi_receive(uint8_t *data, uint16_t length) {
|
||||
spi_status_t status;
|
||||
|
||||
for (uint16_t i = 0; i < length; i++) {
|
||||
status = spi_read();
|
||||
|
||||
if (status >= 0) {
|
||||
data[i] = status;
|
||||
} else {
|
||||
return status;
|
||||
}
|
||||
}
|
||||
|
||||
return SPI_STATUS_SUCCESS;
|
||||
}
|
||||
|
||||
void spi_stop(void) {
|
||||
if (currentSlavePin != NO_PIN) {
|
||||
setPinOutput(currentSlavePin);
|
||||
writePinHigh(currentSlavePin);
|
||||
currentSlavePin = NO_PIN;
|
||||
SPSR &= ~(_BV(SPI2X));
|
||||
SPCR &= ~(currentSlaveConfig);
|
||||
currentSlaveConfig = 0;
|
||||
currentSlave2X = false;
|
||||
}
|
||||
}
|
||||
59
platforms/avr/drivers/spi_master.h
Normal file
59
platforms/avr/drivers/spi_master.h
Normal file
|
|
@ -0,0 +1,59 @@
|
|||
/* Copyright 2020
|
||||
*
|
||||
* This program is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program. If not, see <https://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <stdbool.h>
|
||||
|
||||
#include "gpio.h"
|
||||
|
||||
typedef int16_t spi_status_t;
|
||||
|
||||
// Hardware SS pin is defined in the header so that user code can refer to it
|
||||
#if defined(__AVR_AT90USB162__) || defined(__AVR_ATmega16U2__) || defined(__AVR_ATmega32U2__) || defined(__AVR_ATmega16U4__) || defined(__AVR_ATmega32U4__) || defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB647__) || defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB1287__)
|
||||
# define SPI_SS_PIN B0
|
||||
#elif defined(__AVR_ATmega32A__)
|
||||
# define SPI_SS_PIN B4
|
||||
#elif defined(__AVR_ATmega328P__) || defined(__AVR_ATmega328__)
|
||||
# define SPI_SS_PIN B2
|
||||
#endif
|
||||
|
||||
#define SPI_STATUS_SUCCESS (0)
|
||||
#define SPI_STATUS_ERROR (-1)
|
||||
#define SPI_STATUS_TIMEOUT (-2)
|
||||
|
||||
#define SPI_TIMEOUT_IMMEDIATE (0)
|
||||
#define SPI_TIMEOUT_INFINITE (0xFFFF)
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
void spi_init(void);
|
||||
|
||||
bool spi_start(pin_t slavePin, bool lsbFirst, uint8_t mode, uint16_t divisor);
|
||||
|
||||
spi_status_t spi_write(uint8_t data);
|
||||
|
||||
spi_status_t spi_read(void);
|
||||
|
||||
spi_status_t spi_transmit(const uint8_t *data, uint16_t length);
|
||||
|
||||
spi_status_t spi_receive(uint8_t *data, uint16_t length);
|
||||
|
||||
void spi_stop(void);
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
319
platforms/avr/drivers/ssd1306.c
Normal file
319
platforms/avr/drivers/ssd1306.c
Normal file
|
|
@ -0,0 +1,319 @@
|
|||
#ifdef SSD1306OLED
|
||||
|
||||
# include "ssd1306.h"
|
||||
# include "i2c.h"
|
||||
# include <string.h>
|
||||
# include "print.h"
|
||||
# include "glcdfont.c"
|
||||
# ifdef PROTOCOL_LUFA
|
||||
# include "lufa.h"
|
||||
# endif
|
||||
# include "sendchar.h"
|
||||
# include "timer.h"
|
||||
|
||||
struct CharacterMatrix display;
|
||||
|
||||
// Set this to 1 to help diagnose early startup problems
|
||||
// when testing power-on with ble. Turn it off otherwise,
|
||||
// as the latency of printing most of the debug info messes
|
||||
// with the matrix scan, causing keys to drop.
|
||||
# define DEBUG_TO_SCREEN 0
|
||||
|
||||
// static uint16_t last_battery_update;
|
||||
// static uint32_t vbat;
|
||||
//#define BatteryUpdateInterval 10000 /* milliseconds */
|
||||
# define ScreenOffInterval 300000 /* milliseconds */
|
||||
# if DEBUG_TO_SCREEN
|
||||
static uint8_t displaying;
|
||||
# endif
|
||||
static uint16_t last_flush;
|
||||
|
||||
// Write command sequence.
|
||||
// Returns true on success.
|
||||
static inline bool _send_cmd1(uint8_t cmd) {
|
||||
bool res = false;
|
||||
|
||||
if (i2c_start_write(SSD1306_ADDRESS)) {
|
||||
xprintf("failed to start write to %d\n", SSD1306_ADDRESS);
|
||||
goto done;
|
||||
}
|
||||
|
||||
if (i2c_master_write(0x0 /* command byte follows */)) {
|
||||
print("failed to write control byte\n");
|
||||
|
||||
goto done;
|
||||
}
|
||||
|
||||
if (i2c_master_write(cmd)) {
|
||||
xprintf("failed to write command %d\n", cmd);
|
||||
goto done;
|
||||
}
|
||||
res = true;
|
||||
done:
|
||||
i2c_master_stop();
|
||||
return res;
|
||||
}
|
||||
|
||||
// Write 2-byte command sequence.
|
||||
// Returns true on success
|
||||
static inline bool _send_cmd2(uint8_t cmd, uint8_t opr) {
|
||||
if (!_send_cmd1(cmd)) {
|
||||
return false;
|
||||
}
|
||||
return _send_cmd1(opr);
|
||||
}
|
||||
|
||||
// Write 3-byte command sequence.
|
||||
// Returns true on success
|
||||
static inline bool _send_cmd3(uint8_t cmd, uint8_t opr1, uint8_t opr2) {
|
||||
if (!_send_cmd1(cmd)) {
|
||||
return false;
|
||||
}
|
||||
if (!_send_cmd1(opr1)) {
|
||||
return false;
|
||||
}
|
||||
return _send_cmd1(opr2);
|
||||
}
|
||||
|
||||
# define send_cmd1(c) \
|
||||
if (!_send_cmd1(c)) { \
|
||||
goto done; \
|
||||
}
|
||||
# define send_cmd2(c, o) \
|
||||
if (!_send_cmd2(c, o)) { \
|
||||
goto done; \
|
||||
}
|
||||
# define send_cmd3(c, o1, o2) \
|
||||
if (!_send_cmd3(c, o1, o2)) { \
|
||||
goto done; \
|
||||
}
|
||||
|
||||
static void clear_display(void) {
|
||||
matrix_clear(&display);
|
||||
|
||||
// Clear all of the display bits (there can be random noise
|
||||
// in the RAM on startup)
|
||||
send_cmd3(PageAddr, 0, (DisplayHeight / 8) - 1);
|
||||
send_cmd3(ColumnAddr, 0, DisplayWidth - 1);
|
||||
|
||||
if (i2c_start_write(SSD1306_ADDRESS)) {
|
||||
goto done;
|
||||
}
|
||||
if (i2c_master_write(0x40)) {
|
||||
// Data mode
|
||||
goto done;
|
||||
}
|
||||
for (uint8_t row = 0; row < MatrixRows; ++row) {
|
||||
for (uint8_t col = 0; col < DisplayWidth; ++col) {
|
||||
i2c_master_write(0);
|
||||
}
|
||||
}
|
||||
|
||||
display.dirty = false;
|
||||
|
||||
done:
|
||||
i2c_master_stop();
|
||||
}
|
||||
|
||||
# if DEBUG_TO_SCREEN
|
||||
# undef sendchar
|
||||
static int8_t capture_sendchar(uint8_t c) {
|
||||
sendchar(c);
|
||||
iota_gfx_write_char(c);
|
||||
|
||||
if (!displaying) {
|
||||
iota_gfx_flush();
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
# endif
|
||||
|
||||
bool iota_gfx_init(void) {
|
||||
bool success = false;
|
||||
|
||||
send_cmd1(DisplayOff);
|
||||
send_cmd2(SetDisplayClockDiv, 0x80);
|
||||
send_cmd2(SetMultiPlex, DisplayHeight - 1);
|
||||
|
||||
send_cmd2(SetDisplayOffset, 0);
|
||||
|
||||
send_cmd1(SetStartLine | 0x0);
|
||||
send_cmd2(SetChargePump, 0x14 /* Enable */);
|
||||
send_cmd2(SetMemoryMode, 0 /* horizontal addressing */);
|
||||
|
||||
# ifdef OLED_ROTATE180
|
||||
// the following Flip the display orientation 180 degrees
|
||||
send_cmd1(SegRemap);
|
||||
send_cmd1(ComScanInc);
|
||||
# endif
|
||||
# ifndef OLED_ROTATE180
|
||||
// Flips the display orientation 0 degrees
|
||||
send_cmd1(SegRemap | 0x1);
|
||||
send_cmd1(ComScanDec);
|
||||
# endif
|
||||
|
||||
send_cmd2(SetComPins, 0x2);
|
||||
send_cmd2(SetContrast, 0x8f);
|
||||
send_cmd2(SetPreCharge, 0xf1);
|
||||
send_cmd2(SetVComDetect, 0x40);
|
||||
send_cmd1(DisplayAllOnResume);
|
||||
send_cmd1(NormalDisplay);
|
||||
send_cmd1(DeActivateScroll);
|
||||
send_cmd1(DisplayOn);
|
||||
|
||||
send_cmd2(SetContrast, 0); // Dim
|
||||
|
||||
clear_display();
|
||||
|
||||
success = true;
|
||||
|
||||
iota_gfx_flush();
|
||||
|
||||
# if DEBUG_TO_SCREEN
|
||||
print_set_sendchar(capture_sendchar);
|
||||
# endif
|
||||
|
||||
done:
|
||||
return success;
|
||||
}
|
||||
|
||||
bool iota_gfx_off(void) {
|
||||
bool success = false;
|
||||
|
||||
send_cmd1(DisplayOff);
|
||||
success = true;
|
||||
|
||||
done:
|
||||
return success;
|
||||
}
|
||||
|
||||
bool iota_gfx_on(void) {
|
||||
bool success = false;
|
||||
|
||||
send_cmd1(DisplayOn);
|
||||
success = true;
|
||||
|
||||
done:
|
||||
return success;
|
||||
}
|
||||
|
||||
void matrix_write_char_inner(struct CharacterMatrix *matrix, uint8_t c) {
|
||||
*matrix->cursor = c;
|
||||
++matrix->cursor;
|
||||
|
||||
if (matrix->cursor - &matrix->display[0][0] == sizeof(matrix->display)) {
|
||||
// We went off the end; scroll the display upwards by one line
|
||||
memmove(&matrix->display[0], &matrix->display[1], MatrixCols * (MatrixRows - 1));
|
||||
matrix->cursor = &matrix->display[MatrixRows - 1][0];
|
||||
memset(matrix->cursor, ' ', MatrixCols);
|
||||
}
|
||||
}
|
||||
|
||||
void matrix_write_char(struct CharacterMatrix *matrix, uint8_t c) {
|
||||
matrix->dirty = true;
|
||||
|
||||
if (c == '\n') {
|
||||
// Clear to end of line from the cursor and then move to the
|
||||
// start of the next line
|
||||
uint8_t cursor_col = (matrix->cursor - &matrix->display[0][0]) % MatrixCols;
|
||||
|
||||
while (cursor_col++ < MatrixCols) {
|
||||
matrix_write_char_inner(matrix, ' ');
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
||||
matrix_write_char_inner(matrix, c);
|
||||
}
|
||||
|
||||
void iota_gfx_write_char(uint8_t c) { matrix_write_char(&display, c); }
|
||||
|
||||
void matrix_write(struct CharacterMatrix *matrix, const char *data) {
|
||||
const char *end = data + strlen(data);
|
||||
while (data < end) {
|
||||
matrix_write_char(matrix, *data);
|
||||
++data;
|
||||
}
|
||||
}
|
||||
|
||||
void iota_gfx_write(const char *data) { matrix_write(&display, data); }
|
||||
|
||||
void matrix_write_P(struct CharacterMatrix *matrix, const char *data) {
|
||||
while (true) {
|
||||
uint8_t c = pgm_read_byte(data);
|
||||
if (c == 0) {
|
||||
return;
|
||||
}
|
||||
matrix_write_char(matrix, c);
|
||||
++data;
|
||||
}
|
||||
}
|
||||
|
||||
void iota_gfx_write_P(const char *data) { matrix_write_P(&display, data); }
|
||||
|
||||
void matrix_clear(struct CharacterMatrix *matrix) {
|
||||
memset(matrix->display, ' ', sizeof(matrix->display));
|
||||
matrix->cursor = &matrix->display[0][0];
|
||||
matrix->dirty = true;
|
||||
}
|
||||
|
||||
void iota_gfx_clear_screen(void) { matrix_clear(&display); }
|
||||
|
||||
void matrix_render(struct CharacterMatrix *matrix) {
|
||||
last_flush = timer_read();
|
||||
iota_gfx_on();
|
||||
# if DEBUG_TO_SCREEN
|
||||
++displaying;
|
||||
# endif
|
||||
|
||||
// Move to the home position
|
||||
send_cmd3(PageAddr, 0, MatrixRows - 1);
|
||||
send_cmd3(ColumnAddr, 0, (MatrixCols * FontWidth) - 1);
|
||||
|
||||
if (i2c_start_write(SSD1306_ADDRESS)) {
|
||||
goto done;
|
||||
}
|
||||
if (i2c_master_write(0x40)) {
|
||||
// Data mode
|
||||
goto done;
|
||||
}
|
||||
|
||||
for (uint8_t row = 0; row < MatrixRows; ++row) {
|
||||
for (uint8_t col = 0; col < MatrixCols; ++col) {
|
||||
const uint8_t *glyph = font + (matrix->display[row][col] * (FontWidth - 1));
|
||||
|
||||
for (uint8_t glyphCol = 0; glyphCol < FontWidth - 1; ++glyphCol) {
|
||||
uint8_t colBits = pgm_read_byte(glyph + glyphCol);
|
||||
i2c_master_write(colBits);
|
||||
}
|
||||
|
||||
// 1 column of space between chars (it's not included in the glyph)
|
||||
i2c_master_write(0);
|
||||
}
|
||||
}
|
||||
|
||||
matrix->dirty = false;
|
||||
|
||||
done:
|
||||
i2c_master_stop();
|
||||
# if DEBUG_TO_SCREEN
|
||||
--displaying;
|
||||
# endif
|
||||
}
|
||||
|
||||
void iota_gfx_flush(void) { matrix_render(&display); }
|
||||
|
||||
__attribute__((weak)) void iota_gfx_task_user(void) {}
|
||||
|
||||
void iota_gfx_task(void) {
|
||||
iota_gfx_task_user();
|
||||
|
||||
if (display.dirty) {
|
||||
iota_gfx_flush();
|
||||
}
|
||||
|
||||
if (timer_elapsed(last_flush) > ScreenOffInterval) {
|
||||
iota_gfx_off();
|
||||
}
|
||||
}
|
||||
#endif
|
||||
87
platforms/avr/drivers/ssd1306.h
Normal file
87
platforms/avr/drivers/ssd1306.h
Normal file
|
|
@ -0,0 +1,87 @@
|
|||
#pragma once
|
||||
|
||||
#include <stdbool.h>
|
||||
#include <stdio.h>
|
||||
#include "config.h"
|
||||
|
||||
enum ssd1306_cmds {
|
||||
DisplayOff = 0xAE,
|
||||
DisplayOn = 0xAF,
|
||||
|
||||
SetContrast = 0x81,
|
||||
DisplayAllOnResume = 0xA4,
|
||||
|
||||
DisplayAllOn = 0xA5,
|
||||
NormalDisplay = 0xA6,
|
||||
InvertDisplay = 0xA7,
|
||||
SetDisplayOffset = 0xD3,
|
||||
SetComPins = 0xda,
|
||||
SetVComDetect = 0xdb,
|
||||
SetDisplayClockDiv = 0xD5,
|
||||
SetPreCharge = 0xd9,
|
||||
SetMultiPlex = 0xa8,
|
||||
SetLowColumn = 0x00,
|
||||
SetHighColumn = 0x10,
|
||||
SetStartLine = 0x40,
|
||||
|
||||
SetMemoryMode = 0x20,
|
||||
ColumnAddr = 0x21,
|
||||
PageAddr = 0x22,
|
||||
|
||||
ComScanInc = 0xc0,
|
||||
ComScanDec = 0xc8,
|
||||
SegRemap = 0xa0,
|
||||
SetChargePump = 0x8d,
|
||||
ExternalVcc = 0x01,
|
||||
SwitchCapVcc = 0x02,
|
||||
|
||||
ActivateScroll = 0x2f,
|
||||
DeActivateScroll = 0x2e,
|
||||
SetVerticalScrollArea = 0xa3,
|
||||
RightHorizontalScroll = 0x26,
|
||||
LeftHorizontalScroll = 0x27,
|
||||
VerticalAndRightHorizontalScroll = 0x29,
|
||||
VerticalAndLeftHorizontalScroll = 0x2a,
|
||||
};
|
||||
|
||||
// Controls the SSD1306 128x32 OLED display via i2c
|
||||
|
||||
#ifndef SSD1306_ADDRESS
|
||||
# define SSD1306_ADDRESS 0x3C
|
||||
#endif
|
||||
|
||||
#define DisplayHeight 32
|
||||
#define DisplayWidth 128
|
||||
|
||||
#define FontHeight 8
|
||||
#define FontWidth 6
|
||||
|
||||
#define MatrixRows (DisplayHeight / FontHeight)
|
||||
#define MatrixCols (DisplayWidth / FontWidth)
|
||||
|
||||
struct CharacterMatrix {
|
||||
uint8_t display[MatrixRows][MatrixCols];
|
||||
uint8_t *cursor;
|
||||
bool dirty;
|
||||
};
|
||||
|
||||
extern struct CharacterMatrix display;
|
||||
|
||||
bool iota_gfx_init(void);
|
||||
void iota_gfx_task(void);
|
||||
bool iota_gfx_off(void);
|
||||
bool iota_gfx_on(void);
|
||||
void iota_gfx_flush(void);
|
||||
void iota_gfx_write_char(uint8_t c);
|
||||
void iota_gfx_write(const char *data);
|
||||
void iota_gfx_write_P(const char *data);
|
||||
void iota_gfx_clear_screen(void);
|
||||
|
||||
void iota_gfx_task_user(void);
|
||||
|
||||
void matrix_clear(struct CharacterMatrix *matrix);
|
||||
void matrix_write_char_inner(struct CharacterMatrix *matrix, uint8_t c);
|
||||
void matrix_write_char(struct CharacterMatrix *matrix, uint8_t c);
|
||||
void matrix_write(struct CharacterMatrix *matrix, const char *data);
|
||||
void matrix_write_P(struct CharacterMatrix *matrix, const char *data);
|
||||
void matrix_render(struct CharacterMatrix *matrix);
|
||||
170
platforms/avr/drivers/uart.c
Normal file
170
platforms/avr/drivers/uart.c
Normal file
|
|
@ -0,0 +1,170 @@
|
|||
/* UART Example for Teensy USB Development Board
|
||||
* http://www.pjrc.com/teensy/
|
||||
* Copyright (c) 2009 PJRC.COM, LLC
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
* of this software and associated documentation files (the "Software"), to deal
|
||||
* in the Software without restriction, including without limitation the rights
|
||||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
* copies of the Software, and to permit persons to whom the Software is
|
||||
* furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in
|
||||
* all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
* THE SOFTWARE.
|
||||
*/
|
||||
|
||||
// Version 1.0: Initial Release
|
||||
// Version 1.1: Add support for Teensy 2.0, minor optimizations
|
||||
|
||||
#include <avr/io.h>
|
||||
#include <avr/interrupt.h>
|
||||
|
||||
#include "uart.h"
|
||||
|
||||
#if defined(__AVR_AT90USB162__) || defined(__AVR_ATmega16U2__) || defined(__AVR_ATmega32U2__) || defined(__AVR_ATmega16U4__) || defined(__AVR_ATmega32U4__) || defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB647__) || defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB1287__)
|
||||
# define UDRn UDR1
|
||||
# define UBRRnL UBRR1L
|
||||
# define UCSRnA UCSR1A
|
||||
# define UCSRnB UCSR1B
|
||||
# define UCSRnC UCSR1C
|
||||
# define U2Xn U2X1
|
||||
# define RXENn RXEN1
|
||||
# define TXENn TXEN1
|
||||
# define RXCIEn RXCIE1
|
||||
# define UCSZn1 UCSZ11
|
||||
# define UCSZn0 UCSZ10
|
||||
# define UDRIEn UDRIE1
|
||||
# define USARTn_UDRE_vect USART1_UDRE_vect
|
||||
# define USARTn_RX_vect USART1_RX_vect
|
||||
#elif defined(__AVR_ATmega32A__)
|
||||
# define UDRn UDR
|
||||
# define UBRRnL UBRRL
|
||||
# define UCSRnA UCSRA
|
||||
# define UCSRnB UCSRB
|
||||
# define UCSRnC UCSRC
|
||||
# define U2Xn U2X
|
||||
# define RXENn RXEN
|
||||
# define TXENn TXEN
|
||||
# define RXCIEn RXCIE
|
||||
# define UCSZn1 UCSZ1
|
||||
# define UCSZn0 UCSZ0
|
||||
# define UDRIEn UDRIE
|
||||
# define USARTn_UDRE_vect USART_UDRE_vect
|
||||
# define USARTn_RX_vect USART_RX_vect
|
||||
#elif defined(__AVR_ATmega328__) || defined(__AVR_ATmega328P__)
|
||||
# define UDRn UDR0
|
||||
# define UBRRnL UBRR0L
|
||||
# define UCSRnA UCSR0A
|
||||
# define UCSRnB UCSR0B
|
||||
# define UCSRnC UCSR0C
|
||||
# define U2Xn U2X0
|
||||
# define RXENn RXEN0
|
||||
# define TXENn TXEN0
|
||||
# define RXCIEn RXCIE0
|
||||
# define UCSZn1 UCSZ01
|
||||
# define UCSZn0 UCSZ00
|
||||
# define UDRIEn UDRIE0
|
||||
# define USARTn_UDRE_vect USART_UDRE_vect
|
||||
# define USARTn_RX_vect USART_RX_vect
|
||||
#endif
|
||||
|
||||
// These buffers may be any size from 2 to 256 bytes.
|
||||
#define RX_BUFFER_SIZE 64
|
||||
#define TX_BUFFER_SIZE 256
|
||||
|
||||
static volatile uint8_t tx_buffer[TX_BUFFER_SIZE];
|
||||
static volatile uint8_t tx_buffer_head;
|
||||
static volatile uint8_t tx_buffer_tail;
|
||||
static volatile uint8_t rx_buffer[RX_BUFFER_SIZE];
|
||||
static volatile uint8_t rx_buffer_head;
|
||||
static volatile uint8_t rx_buffer_tail;
|
||||
|
||||
// Initialize the UART
|
||||
void uart_init(uint32_t baud) {
|
||||
cli();
|
||||
UBRRnL = (F_CPU / 4 / baud - 1) / 2;
|
||||
UCSRnA = (1 << U2Xn);
|
||||
UCSRnB = (1 << RXENn) | (1 << TXENn) | (1 << RXCIEn);
|
||||
UCSRnC = (1 << UCSZn1) | (1 << UCSZn0);
|
||||
tx_buffer_head = tx_buffer_tail = 0;
|
||||
rx_buffer_head = rx_buffer_tail = 0;
|
||||
sei();
|
||||
}
|
||||
|
||||
// Transmit a byte
|
||||
void uart_putchar(uint8_t c) {
|
||||
uint8_t i;
|
||||
|
||||
i = tx_buffer_head + 1;
|
||||
if (i >= TX_BUFFER_SIZE) i = 0;
|
||||
// return immediately to avoid deadlock when interrupt is disabled(called from ISR)
|
||||
if (tx_buffer_tail == i && (SREG & (1 << SREG_I)) == 0) return;
|
||||
while (tx_buffer_tail == i)
|
||||
; // wait until space in buffer
|
||||
// cli();
|
||||
tx_buffer[i] = c;
|
||||
tx_buffer_head = i;
|
||||
UCSRnB = (1 << RXENn) | (1 << TXENn) | (1 << RXCIEn) | (1 << UDRIEn);
|
||||
// sei();
|
||||
}
|
||||
|
||||
// Receive a byte
|
||||
uint8_t uart_getchar(void) {
|
||||
uint8_t c, i;
|
||||
|
||||
while (rx_buffer_head == rx_buffer_tail)
|
||||
; // wait for character
|
||||
i = rx_buffer_tail + 1;
|
||||
if (i >= RX_BUFFER_SIZE) i = 0;
|
||||
c = rx_buffer[i];
|
||||
rx_buffer_tail = i;
|
||||
return c;
|
||||
}
|
||||
|
||||
// Return whether the number of bytes waiting in the receive buffer is nonzero.
|
||||
// Call this before uart_getchar() to check if it will need
|
||||
// to wait for a byte to arrive.
|
||||
bool uart_available(void) {
|
||||
uint8_t head, tail;
|
||||
|
||||
head = rx_buffer_head;
|
||||
tail = rx_buffer_tail;
|
||||
if (head >= tail) return (head - tail) > 0;
|
||||
return (RX_BUFFER_SIZE + head - tail) > 0;
|
||||
}
|
||||
|
||||
// Transmit Interrupt
|
||||
ISR(USARTn_UDRE_vect) {
|
||||
uint8_t i;
|
||||
|
||||
if (tx_buffer_head == tx_buffer_tail) {
|
||||
// buffer is empty, disable transmit interrupt
|
||||
UCSRnB = (1 << RXENn) | (1 << TXENn) | (1 << RXCIEn);
|
||||
} else {
|
||||
i = tx_buffer_tail + 1;
|
||||
if (i >= TX_BUFFER_SIZE) i = 0;
|
||||
UDRn = tx_buffer[i];
|
||||
tx_buffer_tail = i;
|
||||
}
|
||||
}
|
||||
|
||||
// Receive Interrupt
|
||||
ISR(USARTn_RX_vect) {
|
||||
uint8_t c, i;
|
||||
|
||||
c = UDRn;
|
||||
i = rx_buffer_head + 1;
|
||||
if (i >= RX_BUFFER_SIZE) i = 0;
|
||||
if (i != rx_buffer_tail) {
|
||||
rx_buffer[i] = c;
|
||||
rx_buffer_head = i;
|
||||
}
|
||||
}
|
||||
35
platforms/avr/drivers/uart.h
Normal file
35
platforms/avr/drivers/uart.h
Normal file
|
|
@ -0,0 +1,35 @@
|
|||
/* UART Example for Teensy USB Development Board
|
||||
* http://www.pjrc.com/teensy/
|
||||
* Copyright (c) 2009 PJRC.COM, LLC
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
* of this software and associated documentation files (the "Software"), to deal
|
||||
* in the Software without restriction, including without limitation the rights
|
||||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
* copies of the Software, and to permit persons to whom the Software is
|
||||
* furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in
|
||||
* all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
* THE SOFTWARE.
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <stdint.h>
|
||||
#include <stdbool.h>
|
||||
|
||||
void uart_init(uint32_t baud);
|
||||
|
||||
void uart_putchar(uint8_t c);
|
||||
|
||||
uint8_t uart_getchar(void);
|
||||
|
||||
bool uart_available(void);
|
||||
176
platforms/avr/drivers/ws2812.c
Normal file
176
platforms/avr/drivers/ws2812.c
Normal file
|
|
@ -0,0 +1,176 @@
|
|||
/*
|
||||
* light weight WS2812 lib V2.0b
|
||||
*
|
||||
* Controls WS2811/WS2812/WS2812B RGB-LEDs
|
||||
* Author: Tim (cpldcpu@gmail.com)
|
||||
*
|
||||
* Jan 18th, 2014 v2.0b Initial Version
|
||||
* Nov 29th, 2015 v2.3 Added SK6812RGBW support
|
||||
*
|
||||
* This program is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
#include "ws2812.h"
|
||||
#include <avr/interrupt.h>
|
||||
#include <avr/io.h>
|
||||
#include <util/delay.h>
|
||||
|
||||
#define pinmask(pin) (_BV((pin)&0xF))
|
||||
|
||||
/*
|
||||
* Forward declare internal functions
|
||||
*
|
||||
* The functions take a byte-array and send to the data output as WS2812 bitstream.
|
||||
* The length is the number of bytes to send - three per LED.
|
||||
*/
|
||||
|
||||
static inline void ws2812_sendarray_mask(uint8_t *data, uint16_t datlen, uint8_t masklo, uint8_t maskhi);
|
||||
|
||||
void ws2812_setleds(LED_TYPE *ledarray, uint16_t number_of_leds) {
|
||||
DDRx_ADDRESS(RGB_DI_PIN) |= pinmask(RGB_DI_PIN);
|
||||
|
||||
uint8_t masklo = ~(pinmask(RGB_DI_PIN)) & PORTx_ADDRESS(RGB_DI_PIN);
|
||||
uint8_t maskhi = pinmask(RGB_DI_PIN) | PORTx_ADDRESS(RGB_DI_PIN);
|
||||
|
||||
ws2812_sendarray_mask((uint8_t *)ledarray, number_of_leds * sizeof(LED_TYPE), masklo, maskhi);
|
||||
|
||||
_delay_us(WS2812_TRST_US);
|
||||
}
|
||||
|
||||
/*
|
||||
This routine writes an array of bytes with RGB values to the Dataout pin
|
||||
using the fast 800kHz clockless WS2811/2812 protocol.
|
||||
*/
|
||||
|
||||
// Timing in ns
|
||||
#define w_zeropulse 350
|
||||
#define w_onepulse 900
|
||||
#define w_totalperiod 1250
|
||||
|
||||
// Fixed cycles used by the inner loop
|
||||
#define w_fixedlow 2
|
||||
#define w_fixedhigh 4
|
||||
#define w_fixedtotal 8
|
||||
|
||||
// Insert NOPs to match the timing, if possible
|
||||
#define w_zerocycles (((F_CPU / 1000) * w_zeropulse) / 1000000)
|
||||
#define w_onecycles (((F_CPU / 1000) * w_onepulse + 500000) / 1000000)
|
||||
#define w_totalcycles (((F_CPU / 1000) * w_totalperiod + 500000) / 1000000)
|
||||
|
||||
// w1_nops - nops between rising edge and falling edge - low
|
||||
#if w_zerocycles >= w_fixedlow
|
||||
# define w1_nops (w_zerocycles - w_fixedlow)
|
||||
#else
|
||||
# define w1_nops 0
|
||||
#endif
|
||||
|
||||
// w2_nops - nops between fe low and fe high
|
||||
#if w_onecycles >= (w_fixedhigh + w1_nops)
|
||||
# define w2_nops (w_onecycles - w_fixedhigh - w1_nops)
|
||||
#else
|
||||
# define w2_nops 0
|
||||
#endif
|
||||
|
||||
// w3_nops - nops to complete loop
|
||||
#if w_totalcycles >= (w_fixedtotal + w1_nops + w2_nops)
|
||||
# define w3_nops (w_totalcycles - w_fixedtotal - w1_nops - w2_nops)
|
||||
#else
|
||||
# define w3_nops 0
|
||||
#endif
|
||||
|
||||
// The only critical timing parameter is the minimum pulse length of the "0"
|
||||
// Warn or throw error if this timing can not be met with current F_CPU settings.
|
||||
#define w_lowtime ((w1_nops + w_fixedlow) * 1000000) / (F_CPU / 1000)
|
||||
#if w_lowtime > 550
|
||||
# error "Light_ws2812: Sorry, the clock speed is too low. Did you set F_CPU correctly?"
|
||||
#elif w_lowtime > 450
|
||||
# warning "Light_ws2812: The timing is critical and may only work on WS2812B, not on WS2812(S)."
|
||||
# warning "Please consider a higher clockspeed, if possible"
|
||||
#endif
|
||||
|
||||
#define w_nop1 "nop \n\t"
|
||||
#define w_nop2 "rjmp .+0 \n\t"
|
||||
#define w_nop4 w_nop2 w_nop2
|
||||
#define w_nop8 w_nop4 w_nop4
|
||||
#define w_nop16 w_nop8 w_nop8
|
||||
|
||||
static inline void ws2812_sendarray_mask(uint8_t *data, uint16_t datlen, uint8_t masklo, uint8_t maskhi) {
|
||||
uint8_t curbyte, ctr, sreg_prev;
|
||||
|
||||
sreg_prev = SREG;
|
||||
cli();
|
||||
|
||||
while (datlen--) {
|
||||
curbyte = (*data++);
|
||||
|
||||
asm volatile(" ldi %0,8 \n\t"
|
||||
"loop%=: \n\t"
|
||||
" out %2,%3 \n\t" // '1' [01] '0' [01] - re
|
||||
#if (w1_nops & 1)
|
||||
w_nop1
|
||||
#endif
|
||||
#if (w1_nops & 2)
|
||||
w_nop2
|
||||
#endif
|
||||
#if (w1_nops & 4)
|
||||
w_nop4
|
||||
#endif
|
||||
#if (w1_nops & 8)
|
||||
w_nop8
|
||||
#endif
|
||||
#if (w1_nops & 16)
|
||||
w_nop16
|
||||
#endif
|
||||
" sbrs %1,7 \n\t" // '1' [03] '0' [02]
|
||||
" out %2,%4 \n\t" // '1' [--] '0' [03] - fe-low
|
||||
" lsl %1 \n\t" // '1' [04] '0' [04]
|
||||
#if (w2_nops & 1)
|
||||
w_nop1
|
||||
#endif
|
||||
#if (w2_nops & 2)
|
||||
w_nop2
|
||||
#endif
|
||||
#if (w2_nops & 4)
|
||||
w_nop4
|
||||
#endif
|
||||
#if (w2_nops & 8)
|
||||
w_nop8
|
||||
#endif
|
||||
#if (w2_nops & 16)
|
||||
w_nop16
|
||||
#endif
|
||||
" out %2,%4 \n\t" // '1' [+1] '0' [+1] - fe-high
|
||||
#if (w3_nops & 1)
|
||||
w_nop1
|
||||
#endif
|
||||
#if (w3_nops & 2)
|
||||
w_nop2
|
||||
#endif
|
||||
#if (w3_nops & 4)
|
||||
w_nop4
|
||||
#endif
|
||||
#if (w3_nops & 8)
|
||||
w_nop8
|
||||
#endif
|
||||
#if (w3_nops & 16)
|
||||
w_nop16
|
||||
#endif
|
||||
|
||||
" dec %0 \n\t" // '1' [+2] '0' [+2]
|
||||
" brne loop%=\n\t" // '1' [+3] '0' [+4]
|
||||
: "=&d"(ctr)
|
||||
: "r"(curbyte), "I"(_SFR_IO_ADDR(PORTx_ADDRESS(RGB_DI_PIN))), "r"(maskhi), "r"(masklo));
|
||||
}
|
||||
|
||||
SREG = sreg_prev;
|
||||
}
|
||||
27
platforms/avr/drivers/ws2812_i2c.c
Normal file
27
platforms/avr/drivers/ws2812_i2c.c
Normal file
|
|
@ -0,0 +1,27 @@
|
|||
#include "ws2812.h"
|
||||
#include "i2c_master.h"
|
||||
|
||||
#ifdef RGBW
|
||||
# error "RGBW not supported"
|
||||
#endif
|
||||
|
||||
#ifndef WS2812_ADDRESS
|
||||
# define WS2812_ADDRESS 0xb0
|
||||
#endif
|
||||
|
||||
#ifndef WS2812_TIMEOUT
|
||||
# define WS2812_TIMEOUT 100
|
||||
#endif
|
||||
|
||||
void ws2812_init(void) { i2c_init(); }
|
||||
|
||||
// Setleds for standard RGB
|
||||
void ws2812_setleds(LED_TYPE *ledarray, uint16_t leds) {
|
||||
static bool s_init = false;
|
||||
if (!s_init) {
|
||||
ws2812_init();
|
||||
s_init = true;
|
||||
}
|
||||
|
||||
i2c_transmit(WS2812_ADDRESS, (uint8_t *)ledarray, sizeof(LED_TYPE) * leds, WS2812_TIMEOUT);
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue