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Added PMW3320 driver (#19543)

master
Vladislav Marchenko 2023-04-03 08:57:19 +06:00 committed by GitHub
parent 162d6156d3
commit 9a68472da8
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6 changed files with 355 additions and 1 deletions
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2
builddefs/common_features.mk
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@ -134,7 +134,7 @@ ifeq ($(strip $(MOUSEKEY_ENABLE)), yes)
SRC += $(QUANTUM_DIR)/mousekey.c
endif
VALID_POINTING_DEVICE_DRIVER_TYPES := adns5050 adns9800 analog_joystick cirque_pinnacle_i2c cirque_pinnacle_spi paw3204 pmw3360 pmw3389 pimoroni_trackball custom
VALID_POINTING_DEVICE_DRIVER_TYPES := adns5050 adns9800 analog_joystick cirque_pinnacle_i2c cirque_pinnacle_spi paw3204 pmw3320 pmw3360 pmw3389 pimoroni_trackball custom
ifeq ($(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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@ -197,6 +197,24 @@ The Pimoroni Trackball module is a I2C based breakout board with an RGB enable t
| `PIMORONI_TRACKBALL_DEBOUNCE_CYCLES` | (Optional) The number of scan cycles used for debouncing on the ball press. | `20` |
| `PIMORONI_TRACKBALL_ERROR_COUNT` | (Optional) Specifies the number of read/write errors until the sensor is disabled. | `10` |
### PMW3320 Sensor
To use the PMW3320 sensor, add this to your `rules.mk`
```make
POINTING_DEVICE_DRIVER = pmw3320
```
The PMW3320 sensor uses a serial type protocol for communication, and requires an additional light source (it could work without one, but expect it to be out of service early).
| Setting | Description | Default |
| ------------------- | ------------------------------------------------------------------- | -------------------------- |
| `PMW3320_SCLK_PIN` | (Required) The pin connected to the clock pin of the sensor. | `POINTING_DEVICE_SCLK_PIN` |
| `PMW3320_SDIO_PIN` | (Required) The pin connected to the data pin of the sensor. | `POINTING_DEVICE_SDIO_PIN` |
| `PMW3320_CS_PIN` | (Required) The pin connected to the cable select pin of the sensor. | `POINTING_DEVICE_CS_PIN` |
The CPI range is 500-3500, in increments of 250. Defaults to 1000 CPI.
### PMW 3360 and PMW 3389 Sensor
This drivers supports both the PMW 3360 and PMW 3389 sensor as well as multiple sensors of the same type _per_ controller, so 2 can be attached at the same side for split keyboards (or unsplit keyboards).

192
drivers/sensors/pmw3320.c 100644
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@ -0,0 +1,192 @@
/* Copyright 2021 Colin Lam (Ploopy Corporation)
* Copyright 2020 Christopher Courtney, aka Drashna Jael're (@drashna) <drashna@live.com>
* Copyright 2019 Sunjun Kim
* Copyright 2019 Hiroyuki Okada
*
* 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 "pmw3320.h"
#include "wait.h"
#include "debug.h"
#include "gpio.h"
void pmw3320_init(void) {
// Initialize sensor serial pins.
setPinOutput(PMW3320_SCLK_PIN);
setPinOutput(PMW3320_SDIO_PIN);
setPinOutput(PMW3320_CS_PIN);
// reboot the sensor.
pmw3320_write_reg(REG_Power_Up_Reset, 0x5a);
// wait maximum time before sensor is ready.
// this ensures that the sensor is actually ready after reset.
wait_ms(55);
// read a burst from the sensor and then discard it.
// gets the sensor ready for write commands
// (for example, setting the dpi).
pmw3320_read_burst();
// Pretty sure that this shouldn't be in the driver.
// Probably device specific?
// Set rest mode to default
pmw3320_write_reg(REG_Rest_Mode_Status, 0x00);
// Set LED to be always on
pmw3320_write_reg(REG_Led_Control, 0x4);
// Disable rest mode
pmw3320_write_reg(REG_Performance, 0x80);
}
// Perform a synchronization with sensor.
// Just as with the serial protocol, this is used by the slave to send a
// synchronization signal to the master.
void pmw3320_sync(void) {
writePinLow(PMW3320_CS_PIN);
wait_us(1);
writePinHigh(PMW3320_CS_PIN);
}
void pmw3320_cs_select(void) {
writePinLow(PMW3320_CS_PIN);
}
void pmw3320_cs_deselect(void) {
writePinHigh(PMW3320_CS_PIN);
}
uint8_t pmw3320_serial_read(void) {
setPinInput(PMW3320_SDIO_PIN);
uint8_t byte = 0;
for (uint8_t i = 0; i < 8; ++i) {
writePinLow(PMW3320_SCLK_PIN);
wait_us(1);
byte = (byte << 1) | readPin(PMW3320_SDIO_PIN);
writePinHigh(PMW3320_SCLK_PIN);
wait_us(1);
}
return byte;
}
void pmw3320_serial_write(uint8_t data) {
setPinOutput(PMW3320_SDIO_PIN);
for (int8_t b = 7; b >= 0; b--) {
writePinLow(PMW3320_SCLK_PIN);
if (data & (1 << b))
writePinHigh(PMW3320_SDIO_PIN);
else
writePinLow(PMW3320_SDIO_PIN);
wait_us(2);
writePinHigh(PMW3320_SCLK_PIN);
}
// This was taken from ADNS5050 driver.
// There's no any info in PMW3320 datasheet about this...
// tSWR. See page 15 of the ADNS5050 spec sheet.
// Technically, this is only necessary if the next operation is an SDIO
// read. This is not guaranteed to be the case, but we're being lazy.
wait_us(4);
// Note that tSWW is never necessary. All write operations require at
// least 32us, which exceeds tSWW, so there's never a need to wait for it.
}
// Read a byte of data from a register on the sensor.
uint8_t pmw3320_read_reg(uint8_t reg_addr) {
pmw3320_cs_select();
pmw3320_serial_write(reg_addr);
uint8_t byte = pmw3320_serial_read();
// This was taken directly from ADNS5050 driver...
// tSRW & tSRR. See page 15 of the ADNS5050 spec sheet.
// Technically, this is only necessary if the next operation is an SDIO
// read or write. This is not guaranteed to be the case.
// Honestly, this wait could probably be removed.
wait_us(1);
pmw3320_cs_deselect();
return byte;
}
void pmw3320_write_reg(uint8_t reg_addr, uint8_t data) {
pmw3320_cs_select();
pmw3320_serial_write(0b10000000 | reg_addr);
pmw3320_serial_write(data);
pmw3320_cs_deselect();
}
report_pmw3320_t pmw3320_read_burst(void) {
pmw3320_cs_select();
report_pmw3320_t data;
data.dx = 0;
data.dy = 0;
pmw3320_serial_write(REG_Motion_Burst);
uint8_t x = pmw3320_serial_read();
uint8_t y = pmw3320_serial_read();
// Probably burst mode may include contents of delta_xy register,
// which contain HI parts of x/y deltas, but I had no luck finding it.
// Probably it's required to activate 12-bit mode to access this data.
// So we end burst mode early to not read unneeded information.
pmw3320_cs_deselect();
data.dx = convert_twoscomp(x);
data.dy = convert_twoscomp(y);
return data;
}
// Convert a two's complement byte from an unsigned data type into a signed
// data type.
int8_t convert_twoscomp(uint8_t data) {
if ((data & 0x80) == 0x80)
return -128 + (data & 0x7F);
else
return data;
}
uint16_t pmw3320_get_cpi(void) {
uint8_t cpival = pmw3320_read_reg(REG_Resolution);
// 0x1F is an inversion of 0x20 which is 0b100000
return (uint16_t)((cpival & 0x1F) * PMW3320_CPI_STEP);
}
void pmw3320_set_cpi(uint16_t cpi) {
uint8_t cpival = constrain((cpi / PMW3320_CPI_STEP) - 1U, 0, (PMW3320_CPI_MAX / PMW3320_CPI_STEP) - 1U);
// Fifth bit is probably a control bit.
// PMW3320 datasheet don't have any info on this, so this is a pure guess.
pmw3320_write_reg(REG_Resolution, 0x20 | cpival);
}
bool pmw3320_check_signature(void) {
uint8_t pid = pmw3320_read_reg(REG_Product_ID);
uint8_t pid2 = pmw3320_read_reg(REG_Inverse_Product_ID);
return (pid == 0x3b && pid2 == 0xc4);
}

119
drivers/sensors/pmw3320.h 100644
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@ -0,0 +1,119 @@
/* Copyright 2021 Colin Lam (Ploopy Corporation)
* Copyright 2020 Christopher Courtney, aka Drashna Jael're (@drashna) <drashna@live.com>
* Copyright 2019 Sunjun Kim
* Copyright 2019 Hiroyuki Okada
*
* 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>
#define constrain(amt, low, high) ((amt) < (low) ? (low) : ((amt) > (high) ? (high) : (amt)))
// Definitions for the PMW3320 serial line.
#ifndef PMW3320_SCLK_PIN
# ifdef POINTING_DEVICE_SCLK_PIN
# define PMW3320_SCLK_PIN POINTING_DEVICE_SCLK_PIN
# else
# error "No clock pin defined -- missing POINTING_DEVICE_SCLK_PIN or PMW3320_SCLK_PIN"
# endif
#endif
#ifndef PMW3320_SDIO_PIN
# ifdef POINTING_DEVICE_SDIO_PIN
# define PMW3320_SDIO_PIN POINTING_DEVICE_SDIO_PIN
# else
# error "No data pin defined -- missing POINTING_DEVICE_SDIO_PIN or PMW3320_SDIO_PIN"
# endif
#endif
#ifndef PMW3320_CS_PIN
# ifdef POINTING_DEVICE_CS_PIN
# define PMW3320_CS_PIN POINTING_DEVICE_CS_PIN
# else
# error "No chip select pin defined -- missing POINTING_DEVICE_CS_PIN or PMW3320_CS_PIN define"
# endif
#endif
typedef struct {
int8_t dx;
int8_t dy;
} report_pmw3320_t;
// A bunch of functions to implement the PMW3320-specific serial protocol.
// Mostly taken from ADNS5050 driver.
// Note that the "serial.h" driver is insufficient, because it does not
// manually manipulate a serial clock signal.
void pmw3320_init(void);
void pmw3320_sync(void);
uint8_t pmw3320_serial_read(void);
void pmw3320_serial_write(uint8_t data);
uint8_t pmw3320_read_reg(uint8_t reg_addr);
void pmw3320_write_reg(uint8_t reg_addr, uint8_t data);
report_pmw3320_t pmw3320_read_burst(void);
void pmw3320_set_cpi(uint16_t cpi);
uint16_t pmw3320_get_cpi(void);
int8_t convert_twoscomp(uint8_t data);
bool pmw3320_check_signature(void);
#if !defined(PMW3320_CPI)
# define PMW3320_CPI 1000
#endif
#define PMW3320_CPI_STEP 250
#define PMW3320_CPI_MIN 250
#define PMW3320_CPI_MAX 3500
// PMW3320 register addresses
// clang-format off
#define REG_Product_ID 0x00
#define REG_Revision_ID 0x01
#define REG_Motion 0x02
#define REG_Delta_X 0x03
#define REG_Delta_Y 0x04
#define REG_SQUAL 0x05
#define REG_Shutter_Upper 0x06
#define REG_Shutter_Lower 0x07
#define REG_Maximum_Pixel 0x08
#define REG_Pixel_Accum 0x09
#define REG_Minimum_Pixel 0x0a
#define REG_Pixel_Grab 0x0b
#define REG_Delta_XY 0x0c
#define REG_Resolution 0x0d
#define REG_Run_Downshift 0x0e
#define REG_Rest1_Period 0x0f
#define REG_Rest1_Downshift 0x10
#define REG_Rest2_Preiod 0x11
#define REG_Rest2_Downshift 0x12
#define REG_Rest3_Period 0x13
#define REG_Min_SQ_Run 0x17
#define REG_Axis_Control 0x1a
#define REG_Performance 0x22
#define REG_Low_Motion_Jitter 0x23
#define REG_Shutter_Max_HI 0x36
#define REG_Shutter_Max_LO 0x37
#define REG_Frame_Rate 0x39
#define REG_Power_Up_Reset 0x3a
#define REG_Shutdown 0x3b
#define REG_Inverse_Revision_ID 0x3f
#define REG_Led_Control 0x40
#define REG_Motion_Control 0x41
#define REG_Burst_Read_First 0x42
#define REG_Rest_Mode_Status 0x45
#define REG_Inverse_Product_ID 0x4f
#define REG_Motion_Burst 0x63
// clang-format on

3
quantum/pointing_device/pointing_device.h
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@ -28,6 +28,9 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
#if defined(POINTING_DEVICE_DRIVER_adns5050)
# include "drivers/sensors/adns5050.h"
# define POINTING_DEVICE_MOTION_PIN_ACTIVE_LOW
#elif defined(POINTING_DEVICE_DRIVER_pmw3320)
# include "drivers/sensors/pmw3320.h"
# define POINTING_DEVICE_MOTION_PIN_ACTIVE_LOW
#elif defined(POINTING_DEVICE_DRIVER_adns9800)
# include "spi_master.h"
# include "drivers/sensors/adns9800.h"

22
quantum/pointing_device/pointing_device_drivers.c
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@ -50,6 +50,28 @@ const pointing_device_driver_t pointing_device_driver = {
};
// clang-format on
#elif defined(POINTING_DEVICE_DRIVER_pmw3320)
report_mouse_t pmw3320_get_report(report_mouse_t mouse_report) {
report_pmw3320_t data = pmw3320_read_burst();
if (data.dx != 0 || data.dy != 0) {
pd_dprintf("Raw ] X: %d, Y: %d\n", data.dx, data.dy);
mouse_report.x = (mouse_xy_report_t)data.dx;
mouse_report.y = (mouse_xy_report_t)data.dy;
}
return mouse_report;
}
// clang-format off
const pointing_device_driver_t pointing_device_driver = {
.init = pmw3320_init,
.get_report = pmw3320_get_report,
.set_cpi = pmw3320_set_cpi,
.get_cpi = pmw3320_get_cpi,
};
// clang-format on
#elif defined(POINTING_DEVICE_DRIVER_adns9800)
report_mouse_t adns9800_get_report_driver(report_mouse_t mouse_report) {