mirror of
https://github.com/openstenoproject/qmk
synced 2024-11-10 10:39:09 +00:00
201 lines
7.9 KiB
C
201 lines
7.9 KiB
C
/* Copyright 2020 Christopher Courtney, aka Drashna Jael're (@drashna) <drashna@live.com>
|
|
* Copyright 2021 Dasky (@daskygit)
|
|
*
|
|
* 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 "pimoroni_trackball.h"
|
|
#include "i2c_master.h"
|
|
#include "print.h"
|
|
|
|
#ifndef PIMORONI_TRACKBALL_ADDRESS
|
|
# define PIMORONI_TRACKBALL_ADDRESS 0x0A
|
|
#endif
|
|
#ifndef PIMORONI_TRACKBALL_INTERVAL_MS
|
|
# define PIMORONI_TRACKBALL_INTERVAL_MS 8
|
|
#endif
|
|
#ifndef PIMORONI_TRACKBALL_MOUSE_SCALE
|
|
# define PIMORONI_TRACKBALL_MOUSE_SCALE 5
|
|
#endif
|
|
#ifndef PIMORONI_TRACKBALL_SCROLL_SCALE
|
|
# define PIMORONI_TRACKBALL_SCROLL_SCALE 1
|
|
#endif
|
|
#ifndef PIMORONI_TRACKBALL_DEBOUNCE_CYCLES
|
|
# define PIMORONI_TRACKBALL_DEBOUNCE_CYCLES 20
|
|
#endif
|
|
#ifndef PIMORONI_TRACKBALL_ERROR_COUNT
|
|
# define PIMORONI_TRACKBALL_ERROR_COUNT 10
|
|
#endif
|
|
|
|
#define TRACKBALL_TIMEOUT 100
|
|
#define TRACKBALL_REG_LED_RED 0x00
|
|
#define TRACKBALL_REG_LED_GRN 0x01
|
|
#define TRACKBALL_REG_LED_BLU 0x02
|
|
#define TRACKBALL_REG_LED_WHT 0x03
|
|
#define TRACKBALL_REG_LEFT 0x04
|
|
#define TRACKBALL_REG_RIGHT 0x05
|
|
#define TRACKBALL_REG_UP 0x06
|
|
#define TRACKBALL_REG_DOWN 0x07
|
|
|
|
static pimoroni_data current_pimoroni_data;
|
|
static report_mouse_t mouse_report;
|
|
static bool scrolling = false;
|
|
static int16_t x_offset = 0;
|
|
static int16_t y_offset = 0;
|
|
static int16_t h_offset = 0;
|
|
static int16_t v_offset = 0;
|
|
static uint16_t precision = 128;
|
|
static uint8_t error_count = 0;
|
|
|
|
float trackball_get_precision(void) { return ((float)precision / 128); }
|
|
void trackball_set_precision(float floatprecision) { precision = (floatprecision * 128); }
|
|
bool trackball_is_scrolling(void) { return scrolling; }
|
|
void trackball_set_scrolling(bool scroll) { scrolling = scroll; }
|
|
|
|
void trackball_set_rgbw(uint8_t r, uint8_t g, uint8_t b, uint8_t w) {
|
|
uint8_t data[4] = {r, g, b, w};
|
|
__attribute__((unused)) i2c_status_t status = i2c_writeReg(PIMORONI_TRACKBALL_ADDRESS << 1, TRACKBALL_REG_LED_RED, data, sizeof(data), TRACKBALL_TIMEOUT);
|
|
#ifdef TRACKBALL_DEBUG
|
|
dprintf("Trackball RGBW i2c_status_t: %d\n", status);
|
|
#endif
|
|
}
|
|
|
|
i2c_status_t read_pimoroni_trackball(pimoroni_data* data) {
|
|
i2c_status_t status = i2c_readReg(PIMORONI_TRACKBALL_ADDRESS << 1, TRACKBALL_REG_LEFT, (uint8_t*)data, sizeof(*data), TRACKBALL_TIMEOUT);
|
|
#ifdef TRACKBALL_DEBUG
|
|
dprintf("Trackball READ i2c_status_t: %d\nLeft: %d\nRight: %d\nUp: %d\nDown: %d\nSwtich: %d\n", status, data->left, data->right, data->up, data->down, data->click);
|
|
#endif
|
|
return status;
|
|
}
|
|
|
|
__attribute__((weak)) void pointing_device_init(void) {
|
|
i2c_init();
|
|
trackball_set_rgbw(0x00, 0x00, 0x00, 0x00);
|
|
}
|
|
|
|
int16_t trackball_get_offsets(uint8_t negative_dir, uint8_t positive_dir, uint8_t scale) {
|
|
uint8_t offset = 0;
|
|
bool isnegative = false;
|
|
if (negative_dir > positive_dir) {
|
|
offset = negative_dir - positive_dir;
|
|
isnegative = true;
|
|
} else {
|
|
offset = positive_dir - negative_dir;
|
|
}
|
|
uint16_t magnitude = (scale * offset * offset * precision) >> 7;
|
|
return isnegative ? -(int16_t)(magnitude) : (int16_t)(magnitude);
|
|
}
|
|
|
|
void trackball_adapt_values(int8_t* mouse, int16_t* offset) {
|
|
if (*offset > 127) {
|
|
*mouse = 127;
|
|
*offset -= 127;
|
|
} else if (*offset < -127) {
|
|
*mouse = -127;
|
|
*offset += 127;
|
|
} else {
|
|
*mouse = *offset;
|
|
*offset = 0;
|
|
}
|
|
}
|
|
|
|
__attribute__((weak)) void trackball_click(bool pressed, report_mouse_t* mouse) {
|
|
#ifdef PIMORONI_TRACKBALL_CLICK
|
|
if (pressed) {
|
|
mouse->buttons |= MOUSE_BTN1;
|
|
} else {
|
|
mouse->buttons &= ~MOUSE_BTN1;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
__attribute__((weak)) bool pointing_device_task_user(pimoroni_data* trackball_data) { return true; };
|
|
|
|
__attribute__((weak)) void pointing_device_task() {
|
|
static fast_timer_t throttle = 0;
|
|
static uint16_t debounce = 0;
|
|
|
|
if (error_count < PIMORONI_TRACKBALL_ERROR_COUNT && timer_elapsed_fast(throttle) >= PIMORONI_TRACKBALL_INTERVAL_MS) {
|
|
i2c_status_t status = read_pimoroni_trackball(¤t_pimoroni_data);
|
|
|
|
if (status == I2C_STATUS_SUCCESS) {
|
|
error_count = 0;
|
|
|
|
if (pointing_device_task_user(¤t_pimoroni_data)) {
|
|
mouse_report = pointing_device_get_report();
|
|
|
|
if (!(current_pimoroni_data.click & 128)) {
|
|
trackball_click(false, &mouse_report);
|
|
if (!debounce) {
|
|
if (scrolling) {
|
|
#ifdef PIMORONI_TRACKBALL_INVERT_X
|
|
h_offset += trackball_get_offsets(current_pimoroni_data.right, current_pimoroni_data.left, PIMORONI_TRACKBALL_SCROLL_SCALE);
|
|
#else
|
|
h_offset -= trackball_get_offsets(current_pimoroni_data.right, current_pimoroni_data.left, PIMORONI_TRACKBALL_SCROLL_SCALE);
|
|
#endif
|
|
#ifdef PIMORONI_TRACKBALL_INVERT_Y
|
|
v_offset += trackball_get_offsets(current_pimoroni_data.down, current_pimoroni_data.up, PIMORONI_TRACKBALL_SCROLL_SCALE);
|
|
#else
|
|
v_offset -= trackball_get_offsets(current_pimoroni_data.down, current_pimoroni_data.up, PIMORONI_TRACKBALL_SCROLL_SCALE);
|
|
#endif
|
|
} else {
|
|
#ifdef PIMORONI_TRACKBALL_INVERT_X
|
|
x_offset -= trackball_get_offsets(current_pimoroni_data.right, current_pimoroni_data.left, PIMORONI_TRACKBALL_MOUSE_SCALE);
|
|
#else
|
|
x_offset += trackball_get_offsets(current_pimoroni_data.right, current_pimoroni_data.left, PIMORONI_TRACKBALL_MOUSE_SCALE);
|
|
#endif
|
|
#ifdef PIMORONI_TRACKBALL_INVERT_Y
|
|
y_offset -= trackball_get_offsets(current_pimoroni_data.down, current_pimoroni_data.up, PIMORONI_TRACKBALL_MOUSE_SCALE);
|
|
#else
|
|
y_offset += trackball_get_offsets(current_pimoroni_data.down, current_pimoroni_data.up, PIMORONI_TRACKBALL_MOUSE_SCALE);
|
|
#endif
|
|
}
|
|
if (scrolling) {
|
|
#ifndef PIMORONI_TRACKBALL_ROTATE
|
|
trackball_adapt_values(&mouse_report.h, &h_offset);
|
|
trackball_adapt_values(&mouse_report.v, &v_offset);
|
|
#else
|
|
trackball_adapt_values(&mouse_report.h, &v_offset);
|
|
trackball_adapt_values(&mouse_report.v, &h_offset);
|
|
#endif
|
|
mouse_report.x = 0;
|
|
mouse_report.y = 0;
|
|
} else {
|
|
#ifndef PIMORONI_TRACKBALL_ROTATE
|
|
trackball_adapt_values(&mouse_report.x, &x_offset);
|
|
trackball_adapt_values(&mouse_report.y, &y_offset);
|
|
#else
|
|
trackball_adapt_values(&mouse_report.x, &y_offset);
|
|
trackball_adapt_values(&mouse_report.y, &x_offset);
|
|
#endif
|
|
mouse_report.h = 0;
|
|
mouse_report.v = 0;
|
|
}
|
|
} else {
|
|
debounce--;
|
|
}
|
|
} else {
|
|
trackball_click(true, &mouse_report);
|
|
debounce = PIMORONI_TRACKBALL_DEBOUNCE_CYCLES;
|
|
}
|
|
}
|
|
} else {
|
|
error_count++;
|
|
}
|
|
|
|
pointing_device_set_report(mouse_report);
|
|
pointing_device_send();
|
|
|
|
throttle = timer_read_fast();
|
|
}
|
|
}
|