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added initial V-USB support for HHKB

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This commit is contained in:
tmk 2011-05-16 00:08:06 +09:00
parent 61e12a3157
commit 068c31a7ba
7 changed files with 661 additions and 57 deletions
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98
hhkb/matrix.c
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@ -4,6 +4,7 @@
#include <stdint.h>
#include <stdbool.h>
#include <avr/io.h>
#include <avr/interrupt.h>
#include <util/delay.h>
#include "print.h"
#include "util.h"
@ -31,29 +32,62 @@ static uint16_t _matrix0[MATRIX_ROWS];
static uint16_t _matrix1[MATRIX_ROWS];
#endif
// HHKB has no ghost and no bounce.
#ifdef MATRIX_HAS_GHOST
static bool matrix_has_ghost_in_row(uint8_t row);
#endif
// matrix is active low. (key on: 0/key off: 1)
// Matrix I/O ports
//
// HHKB has no ghost and no bounce.
// row: HC4051 select input channel(0-8)
// PB0, PB1, PB2(A, B, C)
// col: LS145 select low output line(0-8)
// PB3, PB4, PB5, PB6(A, B, C, D)
// use D as ENABLE: (enable: 0/unenable: 1)
// key: KEY: (on: 0/ off:1)
// KEY_PREV: (on: 1/ off: 0)
// PE6,PE7(KEY, KEY_PREV)
#define COL_ENABLE (1<<6)
#define KEY_SELELCT(ROW, COL) (PORTB = (PORTB&(1<<7))|COL_ENABLE|(((COL)&0x07)<<3)|((ROW)&0x07))
#define KEY_ENABLE (PORTB &= ~COL_ENABLE)
#define KEY_UNABLE (PORTB |= COL_ENABLE)
#define KEY_STATE (PINE&(1<<6))
#define KEY_PREV_ON (PORTE |= (1<<7))
#define KEY_PREV_OFF (PORTE &= ~(1<<7))
// row: HC4051[A,B,C] selects scan row0-7
// col: LS145[A,B,C,D] selects scan col0-7 and enable(D)
// key: on: 0/off: 1
// prev: unknown: output previous key state(negated)?
#ifdef HOST_PJRC
// Ports for Teensy
// row: PB0-2
// col: PB3-5,6
// key: PE6(pull-uped)
// prev: PE7
#define KEY_INIT() do { \
DDRB |= 0x7F; \
DDRE |= (1<<7); \
DDRE &= ~(1<<6); \
PORTE |= (1<<6); \
} while (0)
#define KEY_SELECT(ROW, COL) (PORTB = (PORTB & 0xC0) | \
(((COL) & 0x07)<<3) | \
((ROW) & 0x07))
#define KEY_ENABLE() (PORTB &= ~(1<<6))
#define KEY_UNABLE() (PORTB |= (1<<6))
#define KEY_STATE() (PINE & (1<<6))
#define KEY_PREV_ON() (PORTE |= (1<<7))
#define KEY_PREV_OFF() (PORTE &= ~(1<<7))
#else
// Ports for V-USB
// key: PB0(pull-uped)
// prev: PB1
// row: PB2-4
// col: PC0-2,3
#define KEY_INIT() do { \
DDRB |= 0x1E; \
DDRB &= ~(1<<0); \
PORTB |= (1<<0); \
DDRC |= 0x0F; \
} while (0)
#define KEY_SELECT(ROW, COL) do { \
PORTB = (PORTB & 0xE3) | ((ROW) & 0x07)<<2; \
PORTC = (PORTC & 0xF8) | ((COL) & 0x07); \
} while (0)
#define KEY_ENABLE() (PORTC &= ~(1<<3))
#define KEY_UNABLE() (PORTC |= (1<<3))
#define KEY_STATE() (PINB & (1<<0))
#define KEY_PREV_ON() (PORTB |= (1<<1))
#define KEY_PREV_OFF() (PORTB &= ~(1<<1))
#endif
inline
@ -70,13 +104,7 @@ uint8_t matrix_cols(void)
void matrix_init(void)
{
// row & col output(PB0-6)
DDRB = 0xFF;
KEY_SELELCT(0, 0);
// KEY: input with pullup(PE6)
// KEY_PREV: output(PE7)
DDRE = 0xBF;
PORTE = 0x40;
KEY_INIT();
// initialize matrix state: all keys off
for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix0[i] = 0x00;
@ -95,21 +123,31 @@ uint8_t matrix_scan(void)
for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
for (uint8_t col = 0; col < MATRIX_COLS; col++) {
KEY_SELELCT(row, col);
KEY_SELECT(row, col);
_delay_us(40); // from logic analyzer chart
if (matrix_prev[row] & (1<<col)) {
KEY_PREV_ON;
KEY_PREV_ON();
}
_delay_us(7); // from logic analyzer chart
KEY_ENABLE;
#if HOST_VUSB
// to avoid V-USB interrupt during read key state
uint8_t sreg = SREG;
cli();
#endif
KEY_ENABLE();
_delay_us(10); // from logic analyzer chart
if (KEY_STATE) {
if (KEY_STATE()) {
matrix[row] &= ~(1<<col);
} else {
matrix[row] |= (1<<col);
}
KEY_PREV_OFF;
KEY_UNABLE;
#if HOST_VUSB
SREG = sreg;
#endif
KEY_PREV_OFF();
KEY_UNABLE();
_delay_us(150); // from logic analyzer chart
}
}