/* 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 "trackball_mini.h" #include "wait.h" #include "debug.h" #ifndef OPT_DEBOUNCE # define OPT_DEBOUNCE 5 // (ms) Time between scroll events #endif #ifndef SCROLL_BUTT_DEBOUNCE # define SCROLL_BUTT_DEBOUNCE 100 // (ms) Time between scroll events #endif #ifndef OPT_THRES # define OPT_THRES 150 // (0-1024) Threshold for actication #endif #ifndef OPT_SCALE # define OPT_SCALE 1 // Multiplier for wheel #endif #define PLOOPY_DPI_OPTIONS { CPI375, CPI750, CPI1375 } #define PLOOPY_DPI_DEFAULT 2 #ifndef PLOOPY_DRAGSCROLL_DPI # define PLOOPY_DRAGSCROLL_DPI CPI375 // Fixed-DPI Drag Scroll #endif #ifndef PLOOPY_DRAGSCROLL_MULTIPLIER # define PLOOPY_DRAGSCROLL_MULTIPLIER 0.75 // Variable-DPI Drag Scroll #endif // Transformation constants for delta-X and delta-Y const static float ADNS_X_TRANSFORM = -1.0; const static float ADNS_Y_TRANSFORM = 1.0; keyboard_config_t keyboard_config; uint16_t dpi_array[] = PLOOPY_DPI_OPTIONS; #define DPI_OPTION_SIZE (sizeof(dpi_array) / sizeof(uint16_t)) // TODO: Implement libinput profiles // https://wayland.freedesktop.org/libinput/doc/latest/pointer-acceleration.html // Compile time accel selection // Valid options are ACC_NONE, ACC_LINEAR, ACC_CUSTOM, ACC_QUADRATIC // Trackball State bool is_scroll_clicked = false; bool BurstState = false; // init burst state for Trackball module uint16_t MotionStart = 0; // Timer for accel, 0 is resting state uint16_t lastScroll = 0; // Previous confirmed wheel event uint16_t lastMidClick = 0; // Stops scrollwheel from being read if it was pressed uint8_t OptLowPin = OPT_ENC1; bool debug_encoder = false; bool is_drag_scroll = false; __attribute__((weak)) void process_wheel_user(report_mouse_t* mouse_report, int16_t h, int16_t v) { mouse_report->h = h; mouse_report->v = v; } __attribute__((weak)) void process_wheel(report_mouse_t* mouse_report) { // If the mouse wheel was just released, do not scroll. if (timer_elapsed(lastMidClick) < SCROLL_BUTT_DEBOUNCE) return; // Limit the number of scrolls per unit time. if (timer_elapsed(lastScroll) < OPT_DEBOUNCE) return; // Don't scroll if the middle button is depressed. if (is_scroll_clicked) { #ifndef IGNORE_SCROLL_CLICK return; #endif } lastScroll = timer_read(); uint16_t p1 = adc_read(OPT_ENC1_MUX); uint16_t p2 = adc_read(OPT_ENC2_MUX); if (debug_encoder) dprintf("OPT1: %d, OPT2: %d\n", p1, p2); uint8_t dir = opt_encoder_handler(p1, p2); if (dir == 0) return; process_wheel_user(mouse_report, mouse_report->h, (int)(mouse_report->v + (dir * OPT_SCALE))); } __attribute__((weak)) void process_mouse_user(report_mouse_t* mouse_report, int16_t x, int16_t y) { mouse_report->x = x; mouse_report->y = y; } __attribute__((weak)) void process_mouse(report_mouse_t* mouse_report) { report_adns_t data = adns_read_burst(); if (data.dx != 0 || data.dy != 0) { if (debug_mouse) dprintf("Raw ] X: %d, Y: %d\n", data.dx, data.dy); // Apply delta-X and delta-Y transformations. // x and y are swapped // the sensor is rotated // by 90 degrees float xt = (float) data.dy * ADNS_X_TRANSFORM; float yt = (float) data.dx * ADNS_Y_TRANSFORM; int16_t xti = (int16_t)xt; int16_t yti = (int16_t)yt; process_mouse_user(mouse_report, xti, yti); } } bool process_record_kb(uint16_t keycode, keyrecord_t* record) { xprintf("KL: kc: %u, col: %u, row: %u, pressed: %u\n", keycode, record->event.key.col, record->event.key.row, record->event.pressed); // Update Timer to prevent accidental scrolls if ((record->event.key.col == 1) && (record->event.key.row == 0)) { lastMidClick = timer_read(); is_scroll_clicked = record->event.pressed; } if (!process_record_user(keycode, record)) return false; if (keycode == DPI_CONFIG && record->event.pressed) { keyboard_config.dpi_config = (keyboard_config.dpi_config + 1) % DPI_OPTION_SIZE; eeconfig_update_kb(keyboard_config.raw); adns_set_cpi(dpi_array[keyboard_config.dpi_config]); } if (keycode == DRAG_SCROLL) { #ifndef PLOOPY_DRAGSCROLL_MOMENTARY if (record->event.pressed) #endif { is_drag_scroll ^= 1; } adns_set_cpi(is_drag_scroll ? PLOOPY_DRAGSCROLL_DPI : dpi_array[keyboard_config.dpi_config]); } /* If Mousekeys is disabled, then use handle the mouse button * keycodes. This makes things simpler, and allows usage of * the keycodes in a consistent manner. But only do this if * Mousekeys is not enable, so it's not handled twice. */ #ifndef MOUSEKEY_ENABLE if (IS_MOUSEKEY_BUTTON(keycode)) { report_mouse_t currentReport = pointing_device_get_report(); if (record->event.pressed) { currentReport.buttons |= 1 << (keycode - KC_MS_BTN1); } else { currentReport.buttons &= ~(1 << (keycode - KC_MS_BTN1)); } pointing_device_set_report(currentReport); pointing_device_send(); } #endif return true; } // Hardware Setup void keyboard_pre_init_kb(void) { // debug_enable = true; // debug_matrix = true; // debug_mouse = true; // debug_encoder = true; setPinInput(OPT_ENC1); setPinInput(OPT_ENC2); /* Ground all output pins connected to ground. This provides additional * pathways to ground. If you're messing with this, know this: driving ANY * of these pins high will cause a short. On the MCU. Ka-blooey. */ #ifdef UNUSED_PINS const pin_t unused_pins[] = UNUSED_PINS; for (uint8_t i = 0; i < (sizeof(unused_pins) / sizeof(pin_t)); i++) { setPinOutput(unused_pins[i]); writePinLow(unused_pins[i]); } #endif keyboard_pre_init_user(); } void pointing_device_init(void) { adns_init(); opt_encoder_init(); // reboot the adns. // if the adns hasn't initialized yet, this is harmless. adns_write_reg(REG_CHIP_RESET, 0x5a); // wait maximum time before adns is ready. // this ensures that the adns is actuall ready after reset. wait_ms(55); // read a burst from the adns and then discard it. // gets the adns ready for write commands // (for example, setting the dpi). adns_read_burst(); // set the DPI. adns_set_cpi(dpi_array[keyboard_config.dpi_config]); } void pointing_device_task(void) { report_mouse_t mouse_report = pointing_device_get_report(); process_wheel(&mouse_report); process_mouse(&mouse_report); if (is_drag_scroll) { mouse_report.h = mouse_report.x; #ifdef PLOOPY_DRAGSCROLL_INVERT // Invert vertical scroll direction mouse_report.v = -mouse_report.y; #else mouse_report.v = mouse_report.y; #endif mouse_report.x = 0; mouse_report.y = 0; } pointing_device_set_report(mouse_report); pointing_device_send(); } void eeconfig_init_kb(void) { keyboard_config.dpi_config = PLOOPY_DPI_DEFAULT; eeconfig_update_kb(keyboard_config.raw); eeconfig_init_user(); } void matrix_init_kb(void) { // is safe to just read DPI setting since matrix init // comes before pointing device init. keyboard_config.raw = eeconfig_read_kb(); if (keyboard_config.dpi_config > DPI_OPTION_SIZE) { eeconfig_init_kb(); } matrix_init_user(); }