Move optical sensor code to drivers folder (#13044)
This commit is contained in:
parent
b491c7994a
commit
6901411bca
32 changed files with 60 additions and 890 deletions
237
drivers/sensors/pmw3360.c
Normal file
237
drivers/sensors/pmw3360.c
Normal file
|
@ -0,0 +1,237 @@
|
|||
/* Copyright 2020 Christopher Courtney, aka Drashna Jael're (@drashna) <drashna@live.com>
|
||||
* Copyright 2019 Sunjun Kim
|
||||
* Copyright 2020 Ploopy Corporation
|
||||
*
|
||||
* 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 "wait.h"
|
||||
#include "debug.h"
|
||||
#include "print.h"
|
||||
#include "pmw3360.h"
|
||||
#include "pmw3360_firmware.h"
|
||||
|
||||
bool _inBurst = false;
|
||||
|
||||
#ifndef PMW_CPI
|
||||
# define PMW_CPI 1600
|
||||
#endif
|
||||
#ifndef PMW_CLOCK_SPEED
|
||||
# define PMW_CLOCK_SPEED 70000000
|
||||
#endif
|
||||
#ifndef SPI_MODE
|
||||
# define SPI_MODE 3
|
||||
#endif
|
||||
#ifndef SPI_DIVISOR
|
||||
# define SPI_DIVISOR (F_CPU / PMW_CLOCK_SPEED)
|
||||
#endif
|
||||
#ifndef ROTATIONAL_TRANSFORM_ANGLE
|
||||
# define ROTATIONAL_TRANSFORM_ANGLE 0x00
|
||||
#endif
|
||||
#ifndef PMW_CS_PIN
|
||||
# define PMW_CS_PIN SPI_SS_PIN
|
||||
#endif
|
||||
|
||||
void print_byte(uint8_t byte) { dprintf("%c%c%c%c%c%c%c%c|", (byte & 0x80 ? '1' : '0'), (byte & 0x40 ? '1' : '0'), (byte & 0x20 ? '1' : '0'), (byte & 0x10 ? '1' : '0'), (byte & 0x08 ? '1' : '0'), (byte & 0x04 ? '1' : '0'), (byte & 0x02 ? '1' : '0'), (byte & 0x01 ? '1' : '0')); }
|
||||
|
||||
bool spi_start_adv(void) {
|
||||
bool status = spi_start(PMW_CS_PIN, false, SPI_MODE, SPI_DIVISOR);
|
||||
wait_us(1);
|
||||
return status;
|
||||
}
|
||||
|
||||
void spi_stop_adv(void) {
|
||||
wait_us(1);
|
||||
spi_stop();
|
||||
}
|
||||
|
||||
spi_status_t spi_write_adv(uint8_t reg_addr, uint8_t data) {
|
||||
if (reg_addr != REG_Motion_Burst) {
|
||||
_inBurst = false;
|
||||
}
|
||||
|
||||
spi_start_adv();
|
||||
// send address of the register, with MSBit = 1 to indicate it's a write
|
||||
spi_status_t status = spi_write(reg_addr | 0x80);
|
||||
status = spi_write(data);
|
||||
|
||||
// tSCLK-NCS for write operation
|
||||
wait_us(20);
|
||||
|
||||
// tSWW/tSWR (=120us) minus tSCLK-NCS. Could be shortened, but is looks like a safe lower bound
|
||||
wait_us(100);
|
||||
spi_stop();
|
||||
return status;
|
||||
}
|
||||
|
||||
uint8_t spi_read_adv(uint8_t reg_addr) {
|
||||
spi_start_adv();
|
||||
// send adress of the register, with MSBit = 0 to indicate it's a read
|
||||
spi_write(reg_addr & 0x7f);
|
||||
|
||||
uint8_t data = spi_read();
|
||||
|
||||
// tSCLK-NCS for read operation is 120ns
|
||||
wait_us(1);
|
||||
|
||||
// tSRW/tSRR (=20us) minus tSCLK-NCS
|
||||
wait_us(19);
|
||||
|
||||
spi_stop();
|
||||
return data;
|
||||
}
|
||||
|
||||
void pmw_set_cpi(uint16_t cpi) {
|
||||
uint8_t cpival = constrain((cpi / 100) - 1, 0, 0x77); // limits to 0--119
|
||||
|
||||
spi_start_adv();
|
||||
spi_write_adv(REG_Config1, cpival);
|
||||
spi_stop();
|
||||
}
|
||||
|
||||
uint16_t pmw_get_cpi(void) {
|
||||
uint8_t cpival = spi_read_adv(REG_Config1);
|
||||
return (uint16_t)(cpival & 0xFF) * 100;
|
||||
}
|
||||
|
||||
bool pmw_spi_init(void) {
|
||||
setPinOutput(PMW_CS_PIN);
|
||||
|
||||
spi_init();
|
||||
_inBurst = false;
|
||||
|
||||
spi_stop();
|
||||
spi_start_adv();
|
||||
spi_stop();
|
||||
|
||||
spi_write_adv(REG_Shutdown, 0xb6); // Shutdown first
|
||||
wait_ms(300);
|
||||
|
||||
spi_start_adv();
|
||||
wait_us(40);
|
||||
spi_stop_adv();
|
||||
wait_us(40);
|
||||
|
||||
spi_write_adv(REG_Power_Up_Reset, 0x5a);
|
||||
wait_ms(50);
|
||||
|
||||
spi_read_adv(REG_Motion);
|
||||
spi_read_adv(REG_Delta_X_L);
|
||||
spi_read_adv(REG_Delta_X_H);
|
||||
spi_read_adv(REG_Delta_Y_L);
|
||||
spi_read_adv(REG_Delta_Y_H);
|
||||
|
||||
pmw_upload_firmware();
|
||||
|
||||
spi_stop_adv();
|
||||
|
||||
wait_ms(10);
|
||||
pmw_set_cpi(PMW_CPI);
|
||||
|
||||
wait_ms(1);
|
||||
|
||||
spi_write_adv(REG_Config2, 0x00);
|
||||
|
||||
spi_write_adv(REG_Angle_Tune, constrain(ROTATIONAL_TRANSFORM_ANGLE, -30, 30));
|
||||
|
||||
bool init_success = pmw_check_signature();
|
||||
|
||||
writePinLow(PMW_CS_PIN);
|
||||
|
||||
return init_success;
|
||||
}
|
||||
|
||||
void pmw_upload_firmware(void) {
|
||||
spi_write_adv(REG_SROM_Enable, 0x1d);
|
||||
|
||||
wait_ms(10);
|
||||
|
||||
spi_write_adv(REG_SROM_Enable, 0x18);
|
||||
|
||||
spi_start_adv();
|
||||
spi_write(REG_SROM_Load_Burst | 0x80);
|
||||
wait_us(15);
|
||||
|
||||
unsigned char c;
|
||||
for (int i = 0; i < firmware_length; i++) {
|
||||
c = (unsigned char)pgm_read_byte(firmware_data + i);
|
||||
spi_write(c);
|
||||
wait_us(15);
|
||||
}
|
||||
wait_us(200);
|
||||
|
||||
spi_read_adv(REG_SROM_ID);
|
||||
|
||||
spi_write_adv(REG_Config2, 0x00);
|
||||
|
||||
spi_stop();
|
||||
wait_ms(10);
|
||||
}
|
||||
|
||||
bool pmw_check_signature(void) {
|
||||
uint8_t pid = spi_read_adv(REG_Product_ID);
|
||||
uint8_t iv_pid = spi_read_adv(REG_Inverse_Product_ID);
|
||||
uint8_t SROM_ver = spi_read_adv(REG_SROM_ID);
|
||||
return (pid == 0x42 && iv_pid == 0xBD && SROM_ver == 0x04); // signature for SROM 0x04
|
||||
}
|
||||
|
||||
report_pmw_t pmw_read_burst(void) {
|
||||
if (!_inBurst) {
|
||||
dprintf("burst on");
|
||||
spi_write_adv(REG_Motion_Burst, 0x00);
|
||||
_inBurst = true;
|
||||
}
|
||||
|
||||
spi_start_adv();
|
||||
spi_write(REG_Motion_Burst);
|
||||
wait_us(35); // waits for tSRAD
|
||||
|
||||
report_pmw_t data;
|
||||
data.motion = 0;
|
||||
data.dx = 0;
|
||||
data.mdx = 0;
|
||||
data.dy = 0;
|
||||
data.mdx = 0;
|
||||
|
||||
data.motion = spi_read();
|
||||
spi_write(0x00); // skip Observation
|
||||
data.dx = spi_read();
|
||||
data.mdx = spi_read();
|
||||
data.dy = spi_read();
|
||||
data.mdy = spi_read();
|
||||
|
||||
spi_stop();
|
||||
|
||||
print_byte(data.motion);
|
||||
print_byte(data.dx);
|
||||
print_byte(data.mdx);
|
||||
print_byte(data.dy);
|
||||
print_byte(data.mdy);
|
||||
dprintf("\n");
|
||||
|
||||
data.isMotion = (data.motion & 0x80) != 0;
|
||||
data.isOnSurface = (data.motion & 0x08) == 0;
|
||||
data.dx |= (data.mdx << 8);
|
||||
data.dx = data.dx * -1;
|
||||
data.dy |= (data.mdy << 8);
|
||||
data.dy = data.dy * -1;
|
||||
|
||||
spi_stop();
|
||||
|
||||
if (data.motion & 0b111) { // panic recovery, sometimes burst mode works weird.
|
||||
_inBurst = false;
|
||||
}
|
||||
|
||||
return data;
|
||||
}
|
Loading…
Add table
Add a link
Reference in a new issue