diff options
Diffstat (limited to 'users/drashna/pimoroni_trackball.c')
| -rw-r--r-- | users/drashna/pimoroni_trackball.c | 151 | 
1 files changed, 0 insertions, 151 deletions
| diff --git a/users/drashna/pimoroni_trackball.c b/users/drashna/pimoroni_trackball.c deleted file mode 100644 index a6ca6c9966..0000000000 --- a/users/drashna/pimoroni_trackball.c +++ /dev/null @@ -1,151 +0,0 @@ -/* Copyright 2020 Christopher Courtney, aka Drashna Jael're  (@drashna) <[email protected]> - * - * 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" - -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 I2C_TIMEOUT -#    define I2C_TIMEOUT 100 -#endif -#ifndef MOUSE_DEBOUNCE -#    define MOUSE_DEBOUNCE 5 -#endif - -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_ADDRESS << 1, data, sizeof(data), I2C_TIMEOUT); -} - -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; -} - -void update_member(int8_t* member, int16_t* offset) { -    if (*offset > 127) { -        *member = 127; -        *offset -= 127; -    } else if (*offset < -127) { -        *member = -127; -        *offset += 127; -    } else { -        *member = *offset; -        *offset = 0; -    } -} - -__attribute__((weak)) void trackball_check_click(bool pressed, report_mouse_t* mouse) { -    if (pressed) { -        mouse->buttons |= MOUSE_BTN1; -    } else { -        mouse->buttons &= ~MOUSE_BTN1; -    } -} - -void trackball_register_button(bool pressed, enum mouse_buttons button) { -    report_mouse_t currentReport = pointing_device_get_report(); -    if (pressed) { -        currentReport.buttons |= button; -    } else { -        currentReport.buttons &= ~button; -    } -    pointing_device_set_report(currentReport); -} - -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; } - -bool has_report_changed (report_mouse_t first, report_mouse_t second) { -    return !( -        (!first.buttons && first.buttons == second.buttons) && -        (!first.x && first.x == second.x) && -        (!first.y && first.y == second.y) && -        (!first.h && first.h == second.h) && -        (!first.v && first.v == second.v) ); -} - - -__attribute__((weak)) void pointing_device_init(void) { trackball_set_rgbw(0x00, 0x00, 0x00, 0x4F); } - -void pointing_device_task(void) { -    static bool     debounce; -    static uint16_t debounce_timer; -    uint8_t         state[5] = {}; -    if (i2c_readReg(TRACKBALL_ADDRESS << 1, 0x04, state, 5, I2C_TIMEOUT) == I2C_STATUS_SUCCESS) { -        if (!state[4] && !debounce) { -            if (scrolling) { -#ifdef PIMORONI_TRACKBALL_INVERT_X -                h_offset += mouse_offset(state[2], state[3], 1); -#else -                h_offset -= mouse_offset(state[2], state[3], 1); -#endif -#ifdef PIMORONI_TRACKBALL_INVERT_Y -                v_offset += mouse_offset(state[1], state[0], 1); -#else -                v_offset -= mouse_offset(state[1], state[0], 1); -#endif -            } else { -#ifdef PIMORONI_TRACKBALL_INVERT_X -                x_offset -= mouse_offset(state[2], state[3], 5); -#else -                x_offset += mouse_offset(state[2], state[3], 5); -#endif -#ifdef PIMORONI_TRACKBALL_INVERT_Y -                y_offset -= mouse_offset(state[1], state[0], 5); -#else -                y_offset += mouse_offset(state[1], state[0], 5); -#endif -            } -        } else { -            if (state[4]) { -                debounce       = true; -                debounce_timer = timer_read(); -            } -        } -    } - -    if (timer_elapsed(debounce_timer) > MOUSE_DEBOUNCE) debounce = false; - -    report_mouse_t mouse = pointing_device_get_report(); - -    trackball_check_click(state[4] & (1 << 7), &mouse); - -#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); -    if (has_report_changed(mouse, pointing_device_get_report())) { -        pointing_device_send(); -    } -} | 
