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Add support for PAW3204 Optical Sensor (#17669) 

Co-authored-by: gompa <gompa@h-bomb.nl>
Co-authored-by: Stefan Kerkmann <karlk90@pm.me>
This commit is contained in:
Drashna Jaelre 2022-07-19 17:46:22 -07:00 committed by GitHub
parent 6992efb229
commit 12eb6444c6
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6 changed files with 282 additions and 1 deletions
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2
builddefs/common_features.mk
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@ -126,7 +126,7 @@ ifeq ($(strip $(MOUSEKEY_ENABLE)), yes)
SRC += $(QUANTUM_DIR)/mousekey.c
endif
VALID_POINTING_DEVICE_DRIVER_TYPES := adns5050 adns9800 analog_joystick cirque_pinnacle_i2c cirque_pinnacle_spi pmw3360 pmw3389 pimoroni_trackball custom
VALID_POINTING_DEVICE_DRIVER_TYPES := adns5050 adns9800 analog_joystick cirque_pinnacle_i2c cirque_pinnacle_spi paw3204 pmw3360 pmw3389 pimoroni_trackball custom
ifeq ($(strip $(POINTING_DEVICE_ENABLE)), yes)
ifeq ($(filter $(POINTING_DEVICE_DRIVER),$(VALID_POINTING_DEVICE_DRIVER_TYPES)),)
$(call CATASTROPHIC_ERROR,Invalid POINTING_DEVICE_DRIVER,POINTING_DEVICE_DRIVER="$(POINTING_DEVICE_DRIVER)" is not a valid pointing device type)

18
docs/feature_pointing_device.md
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@ -136,6 +136,24 @@ Also see the `POINTING_DEVICE_TASK_THROTTLE_MS`, which defaults to 10ms when usi
**`POINTING_DEVICE_GESTURES_CURSOR_GLIDE_ENABLE`** is not specific to Cirque trackpad; any pointing device with a lift/contact status can integrate this gesture into its driver. e.g. PMW3360 can use Lift_Stat from Motion register. Note that `POINTING_DEVICE_MOTION_PIN` cannot be used with this feature; continuous polling of `pointing_device_get_report()` is needed to generate glide reports.
### PAW 3204 Sensor
To use the paw 3204 sensor, add this to your `rules.mk`
```make
POINTING_DEVICE_DRIVER = paw3204
```
The paw 3204 sensor uses a serial type protocol for communication, and requires an additional light source.
| Setting | Description |
|--------------------|---------------------------------------------------------------------|
|`PAW3204_SCLK_PIN` | (Required) The pin connected to the clock pin of the sensor. |
|`PAW3204_SDIO_PIN` | (Required) The pin connected to the data pin of the sensor. |
The CPI range is 400-1600, with supported values of (400, 500, 600, 800, 1000, 1200 and 1600). Defaults to 1000 CPI.
### Pimoroni Trackball
To use the Pimoroni Trackball module, add this to your `rules.mk`:

172
drivers/sensors/paw3204.c Normal file
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@ -0,0 +1,172 @@
/* Copyright 2021 Gompa (@Gompa)
*
* 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/>.
*/
// https://github.com/shinoaliceKabocha/choco60_track/tree/master/keymaps/default
#include "paw3204.h"
#include "wait.h"
#include "debug.h"
#include "gpio.h"
#define REG_PID1 0x00
#define REG_PID2 0x01
#define REG_STAT 0x02
#define REG_X 0x03
#define REG_Y 0x04
#define REG_SETUP 0x06
#define REG_IMGQUAL 0x07
#define REG_IMGREC 0x0E
#define REG_IMGTRASH 0x0D
#define constrain(amt, low, high) ((amt) < (low) ? (low) : ((amt) > (high) ? (high) : (amt)))
// CPI values
enum cpi_values {
CPI400, // 0b000
CPI500, // 0b001
CPI600, // 0b010
CPI800, // 0b011
CPI1000, // 0b100
CPI1200, // 0b101
CPI1600, // 0b110
};
uint8_t paw3204_serial_read(void);
void paw3204_serial_write(uint8_t reg_addr);
uint8_t paw3204_read_reg(uint8_t reg_addr);
void paw3204_write_reg(uint8_t reg_addr, uint8_t data);
void paw3204_init(void) {
setPinOutput(PAW3204_SCLK_PIN); // setclockpin to output
setPinInputHigh(PAW3204_SDIO_PIN); // set datapin input high
paw3204_write_reg(REG_SETUP, 0x86); // reset sensor and set 1600cpi
wait_us(5);
paw3204_read_reg(0x00); // read id
paw3204_read_reg(0x01); // read id2
// PAW3204_write_reg(REG_SETUP,0x06); // dont reset sensor and set cpi 1600
paw3204_write_reg(REG_IMGTRASH, 0x32); // write image trashhold
}
uint8_t paw3204_serial_read(void) {
setPinInput(PAW3204_SDIO_PIN);
uint8_t byte = 0;
for (uint8_t i = 0; i < 8; ++i) {
writePinLow(PAW3204_SCLK_PIN);
wait_us(1);
byte = (byte << 1) | readPin(PAW3204_SDIO_PIN);
writePinHigh(PAW3204_SCLK_PIN);
wait_us(1);
}
return byte;
}
void paw3204_serial_write(uint8_t data) {
writePinLow(PAW3204_SDIO_PIN);
setPinOutput(PAW3204_SDIO_PIN);
for (int8_t b = 7; b >= 0; b--) {
writePinLow(PAW3204_SCLK_PIN);
if (data & (1 << b)) {
writePinHigh(PAW3204_SDIO_PIN);
} else {
writePinLow(PAW3204_SDIO_PIN);
}
writePinHigh(PAW3204_SCLK_PIN);
}
wait_us(4);
}
report_paw3204_t paw3204_read(void) {
report_paw3204_t data = {0};
data.isMotion = paw3204_read_reg(REG_STAT) & (1 << 7); // check for motion only (bit 7 in field)
data.x = (int8_t)paw3204_read_reg(REG_X);
data.y = (int8_t)paw3204_read_reg(REG_Y);
return data;
}
void paw3204_write_reg(uint8_t reg_addr, uint8_t data) {
paw3204_serial_write(0b10000000 | reg_addr);
paw3204_serial_write(data);
}
uint8_t paw3204_read_reg(uint8_t reg_addr) {
paw3204_serial_write(reg_addr);
wait_us(5);
return paw3204_serial_read();
}
void paw3204_set_cpi(uint16_t cpi) {
uint8_t cpival = CPI1000;
if (cpi <= 450) {
cpival = CPI400;
} else if (cpi <= 550) {
cpival = CPI500;
} else if (cpi <= 700) {
cpival = CPI600;
} else if (cpi <= 900) {
cpival = CPI800;
} else if (cpi <= 1100) {
cpival = CPI1000;
} else if (cpi <= 1400) {
cpival = CPI1200;
} else if (cpi > 1400) {
cpival = CPI1600;
}
paw3204_write_reg(REG_SETUP, cpival);
}
uint16_t paw3204_get_cpi(void) {
uint16_t cpival = 1000;
switch (paw3204_read_reg(REG_SETUP) & 0b111) {
case CPI400:
cpival = 400;
break;
case CPI500:
cpival = 500;
break;
case CPI600:
cpival = 600;
break;
case CPI800:
cpival = 800;
break;
case CPI1000:
cpival = 1000;
break;
case CPI1200:
cpival = 1200;
break;
case CPI1600:
cpival = 1600;
break;
}
return cpival;
}
uint8_t read_pid_paw3204(void) {
return paw3204_read_reg(REG_PID1);
}

68
drivers/sensors/paw3204.h Normal file
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@ -0,0 +1,68 @@
/* Copyright 2021 Gompa (@Gompa)
*
* 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/>.
*/
#pragma once
#include <stdint.h>
#include <stdbool.h>
#ifndef PAW3204_SCLK_PIN
# error "No clock pin defined -- missing PAW3204_SCLK_PIN"
#endif
#ifndef PAW3204_SDIO_PIN
# error "No data pin defined -- missing PAW3204_SDIO_PIN"
#endif
typedef struct {
int16_t x;
int16_t y;
bool isMotion;
} report_paw3204_t;
/**
* @brief Initializes the sensor so it is in a working state and ready to
* be polled for data.
*
* @return true Initialization was a success
* @return false Initialization failed, do not proceed operation
*/
void paw3204_init(void);
/**
* @brief Reads and clears the current delta, and motion register values on the
* given sensor.
*
* @return pmw33xx_report_t Current values of the sensor, if errors occurred all
* fields are set to zero
*/
report_paw3204_t paw3204_read(void);
/**
* @brief Sets the given CPI value the sensor. CPI is often refereed to
* as the sensors sensitivity. Values outside of the allowed range are
* constrained into legal values.
*
* @param cpi CPI value to set
*/
void paw3204_set_cpi(uint16_t cpi);
/**
* @brief Gets the currently set CPI value from the sensor. CPI is often
* refereed to as the sensors sensitivity.
*
* @return uint16_t Current CPI value of the sensor
*/
uint16_t paw3204_get_cpi(void);

2
quantum/pointing_device.h
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@ -33,6 +33,8 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
# include "drivers/sensors/cirque_pinnacle.h"
# include "drivers/sensors/cirque_pinnacle_gestures.h"
# include "pointing_device_gestures.h"
#elif defined(POINTING_DEVICE_DRIVER_paw3204)
# include "drivers/sensors/paw3204.h"
#elif defined(POINTING_DEVICE_DRIVER_pimoroni_trackball)
# include "i2c_master.h"
# include "drivers/sensors/pimoroni_trackball.h"

21
quantum/pointing_device_drivers.c
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@ -26,6 +26,7 @@
#define CONSTRAIN_HID_XY(amt) ((amt) < XY_REPORT_MIN ? XY_REPORT_MIN : ((amt) > XY_REPORT_MAX ? XY_REPORT_MAX : (amt)))
// get_report functions should probably be moved to their respective drivers.
#if defined(POINTING_DEVICE_DRIVER_adns5050)
report_mouse_t adns5050_get_report(report_mouse_t mouse_report) {
report_adns5050_t data = adns5050_read_burst();
@ -198,7 +199,27 @@ const pointing_device_driver_t pointing_device_driver = {
.get_cpi = cirque_pinnacle_get_cpi
};
// clang-format on
#elif defined(POINTING_DEVICE_DRIVER_paw3204)
report_mouse_t paw3204_get_report(report_mouse_t mouse_report) {
report_paw3204_t data = paw3204_read();
if (data.isMotion) {
# ifdef CONSOLE_ENABLE
dprintf("Raw ] X: %d, Y: %d\n", data.x, data.y);
# endif
mouse_report.x = data.x;
mouse_report.y = data.y;
}
return mouse_report;
}
const pointing_device_driver_t pointing_device_driver = {
.init = paw3204_init,
.get_report = paw3204_get_report,
.set_cpi = paw3204_set_cpi,
.get_cpi = paw3204_get_cpi,
};
#elif defined(POINTING_DEVICE_DRIVER_pimoroni_trackball)
mouse_xy_report_t pimoroni_trackball_adapt_values(clamp_range_t* offset) {