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-rw-r--r--drivers/sensors/pimoroni_trackball.c213
-rw-r--r--drivers/sensors/pimoroni_trackball.h30
2 files changed, 153 insertions, 90 deletions
diff --git a/drivers/sensors/pimoroni_trackball.c b/drivers/sensors/pimoroni_trackball.c
index c0ac644f70..48098ff0cc 100644
--- a/drivers/sensors/pimoroni_trackball.c
+++ b/drivers/sensors/pimoroni_trackball.c
@@ -1,4 +1,5 @@
/* 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
@@ -13,128 +14,188 @@
* 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"
-static uint8_t scrolling = 0;
-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 float precisionSpeed = 1;
+#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
-static uint16_t i2c_timeout_timer;
+#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
-#ifndef PIMORONI_I2C_TIMEOUT
-# define PIMORONI_I2C_TIMEOUT 100
-#endif
-#ifndef I2C_WAITCHECK
-# define I2C_WAITCHECK 1000
+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
-#ifndef MOUSE_DEBOUNCE
-# define MOUSE_DEBOUNCE 5
+}
+
+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;
+}
-void trackball_set_rgbw(uint8_t red, uint8_t green, uint8_t blue, uint8_t white) {
- uint8_t data[] = {0x00, red, green, blue, white};
- i2c_transmit(TRACKBALL_WRITE, data, sizeof(data), PIMORONI_I2C_TIMEOUT);
+__attribute__((weak)) void pointing_device_init(void) {
+ i2c_init();
+ trackball_set_rgbw(0x00, 0x00, 0x00, 0x00);
}
-int16_t mouse_offset(uint8_t positive, uint8_t negative, int16_t scale) {
- int16_t offset = (int16_t)positive - (int16_t)negative;
- int16_t magnitude = (int16_t)(scale * offset * offset * precisionSpeed);
- return offset < 0 ? -magnitude : magnitude;
+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 update_member(int8_t* member, int16_t* offset) {
+void trackball_adapt_values(int8_t* mouse, int16_t* offset) {
if (*offset > 127) {
- *member = 127;
+ *mouse = 127;
*offset -= 127;
} else if (*offset < -127) {
- *member = -127;
+ *mouse = -127;
*offset += 127;
} else {
- *member = *offset;
+ *mouse = *offset;
*offset = 0;
}
}
-__attribute__((weak)) void trackball_check_click(bool pressed, report_mouse_t* mouse) {
+__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
}
-float trackball_get_precision(void) { return precisionSpeed; }
-void trackball_set_precision(float precision) { precisionSpeed = precision; }
-bool trackball_is_scrolling(void) { return scrolling; }
-void trackball_set_scrolling(bool scroll) { scrolling = scroll; }
+__attribute__((weak)) bool pointing_device_task_user(pimoroni_data* trackball_data) { return true; };
-__attribute__((weak)) void pointing_device_init(void) { i2c_init(); trackball_set_rgbw(0x00, 0x00, 0x00, 0x00); }
+__attribute__((weak)) void pointing_device_task() {
+ static fast_timer_t throttle = 0;
+ static uint16_t debounce = 0;
-void pointing_device_task(void) {
- static bool debounce;
- static uint16_t debounce_timer;
- uint8_t state[5] = {};
- if (timer_elapsed(i2c_timeout_timer) > I2C_WAITCHECK) {
- if (i2c_readReg(TRACKBALL_READ, 0x04, state, 5, PIMORONI_I2C_TIMEOUT) == I2C_STATUS_SUCCESS) {
- if (!state[4] && !debounce) {
- if (scrolling) {
+ if (error_count < PIMORONI_TRACKBALL_ERROR_COUNT && timer_elapsed_fast(throttle) >= PIMORONI_TRACKBALL_INTERVAL_MS) {
+ i2c_status_t status = read_pimoroni_trackball(&current_pimoroni_data);
+
+ if (status == I2C_STATUS_SUCCESS) {
+ error_count = 0;
+
+ if (pointing_device_task_user(&current_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 += mouse_offset(state[2], state[3], 1);
+ h_offset += trackball_get_offsets(current_pimoroni_data.right, current_pimoroni_data.left, PIMORONI_TRACKBALL_SCROLL_SCALE);
#else
- h_offset -= mouse_offset(state[2], state[3], 1);
+ 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 += mouse_offset(state[1], state[0], 1);
+ v_offset += trackball_get_offsets(current_pimoroni_data.down, current_pimoroni_data.up, PIMORONI_TRACKBALL_SCROLL_SCALE);
#else
- v_offset -= mouse_offset(state[1], state[0], 1);
+ v_offset -= trackball_get_offsets(current_pimoroni_data.down, current_pimoroni_data.up, PIMORONI_TRACKBALL_SCROLL_SCALE);
#endif
- } else {
+ } else {
#ifdef PIMORONI_TRACKBALL_INVERT_X
- x_offset -= mouse_offset(state[2], state[3], 5);
+ x_offset -= trackball_get_offsets(current_pimoroni_data.right, current_pimoroni_data.left, PIMORONI_TRACKBALL_MOUSE_SCALE);
#else
- x_offset += mouse_offset(state[2], state[3], 5);
+ 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 -= mouse_offset(state[1], state[0], 5);
+ y_offset -= trackball_get_offsets(current_pimoroni_data.down, current_pimoroni_data.up, PIMORONI_TRACKBALL_MOUSE_SCALE);
#else
- y_offset += mouse_offset(state[1], state[0], 5);
+ y_offset += trackball_get_offsets(current_pimoroni_data.down, current_pimoroni_data.up, PIMORONI_TRACKBALL_MOUSE_SCALE);
#endif
- }
- } else {
- if (state[4]) {
- debounce = true;
- debounce_timer = timer_read();
+ }
+ 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 {
- i2c_timeout_timer = timer_read();
+ error_count++;
}
- }
-
- if (timer_elapsed(debounce_timer) > MOUSE_DEBOUNCE) debounce = false;
- report_mouse_t mouse = pointing_device_get_report();
-
-#ifdef PIMORONI_TRACKBALL_CLICK
- trackball_check_click(state[4] & (1 << 7), &mouse);
-#endif
+ pointing_device_set_report(mouse_report);
+ pointing_device_send();
-#ifndef PIMORONI_TRACKBALL_ROTATE
- update_member(&mouse.x, &x_offset);
- update_member(&mouse.y, &y_offset);
- update_member(&mouse.h, &h_offset);
- update_member(&mouse.v, &v_offset);
-#else
- update_member(&mouse.x, &y_offset);
- update_member(&mouse.y, &x_offset);
- update_member(&mouse.h, &v_offset);
- update_member(&mouse.v, &h_offset);
-#endif
- pointing_device_set_report(mouse);
- pointing_device_send();
+ throttle = timer_read_fast();
+ }
}
diff --git a/drivers/sensors/pimoroni_trackball.h b/drivers/sensors/pimoroni_trackball.h
index 9e3c64c19c..6b2a41425d 100644
--- a/drivers/sensors/pimoroni_trackball.h
+++ b/drivers/sensors/pimoroni_trackball.h
@@ -1,4 +1,5 @@
/* 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
@@ -13,23 +14,24 @@
* 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 "quantum.h"
#include "pointing_device.h"
-#ifndef TRACKBALL_ADDRESS
-# define TRACKBALL_ADDRESS 0x0A
-#endif
-#define TRACKBALL_WRITE ((TRACKBALL_ADDRESS << 1) | I2C_WRITE)
-#define TRACKBALL_READ (TRACKBALL_ADDRESS << 1)
-
-void trackball_set_rgbw(uint8_t red, uint8_t green, uint8_t blue, uint8_t white);
-void trackball_check_click(bool pressed, report_mouse_t *mouse);
-void trackball_register_button(bool pressed, enum mouse_buttons button);
+typedef struct pimoroni_data {
+ uint8_t left;
+ uint8_t right;
+ uint8_t up;
+ uint8_t down;
+ uint8_t click;
+} pimoroni_data;
-float trackball_get_precision(void);
-void trackball_set_precision(float precision);
-bool trackball_is_scrolling(void);
-void trackball_set_scrolling(bool scroll);
+void trackball_set_rgbw(uint8_t red, uint8_t green, uint8_t blue, uint8_t white);
+void trackball_click(bool pressed, report_mouse_t* mouse);
+int16_t trackball_get_offsets(uint8_t negative_dir, uint8_t positive_dir, uint8_t scale);
+void trackball_adapt_values(int8_t* mouse, int16_t* offset);
+float trackball_get_precision(void);
+void trackball_set_precision(float precision);
+bool trackball_is_scrolling(void);
+void trackball_set_scrolling(bool scroll);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-21 19:41:22 +0000