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- /* Copyright 2021 QMK
- *
- * 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 3 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 "split_util.h"
- #include "matrix.h"
- #include "keyboard.h"
- #include "config.h"
- #include "timer.h"
- #include "transport.h"
- #include "quantum.h"
- #include "wait.h"
- #include "usb_util.h"
- #ifdef EE_HANDS
- # include "eeconfig.h"
- #endif
- #if defined(RGBLIGHT_ENABLE) && defined(RGBLED_SPLIT)
- # include "rgblight.h"
- #endif
- #ifndef SPLIT_USB_TIMEOUT
- # define SPLIT_USB_TIMEOUT 2000
- #endif
- #ifndef SPLIT_USB_TIMEOUT_POLL
- # define SPLIT_USB_TIMEOUT_POLL 10
- #endif
- volatile bool isLeftHand = true;
- #if defined(SPLIT_USB_DETECT)
- static bool usbIsActive(void) {
- for (uint8_t i = 0; i < (SPLIT_USB_TIMEOUT / SPLIT_USB_TIMEOUT_POLL); i++) {
- // This will return true if a USB connection has been established
- if (usb_connected_state()) {
- return true;
- }
- wait_ms(SPLIT_USB_TIMEOUT_POLL);
- }
- return false;
- }
- #else
- static inline bool usbIsActive(void) { return usb_vbus_state(); }
- #endif
- #ifdef SPLIT_HAND_MATRIX_GRID
- void matrix_io_delay(void);
- static uint8_t peek_matrix_intersection(pin_t out_pin, pin_t in_pin) {
- setPinInputHigh(in_pin);
- setPinOutput(out_pin);
- writePinLow(out_pin);
- // It's almost unnecessary, but wait until it's down to low, just in case.
- wait_us(1);
- uint8_t pin_state = readPin(in_pin);
- // Set out_pin to a setting that is less susceptible to noise.
- setPinInputHigh(out_pin);
- matrix_io_delay(); // Wait for the pull-up to go HIGH.
- return pin_state;
- }
- #endif
- __attribute__((weak)) bool is_keyboard_left(void) {
- #if defined(SPLIT_HAND_PIN)
- // Test pin SPLIT_HAND_PIN for High/Low, if low it's right hand
- setPinInput(SPLIT_HAND_PIN);
- # ifdef SPLIT_HAND_PIN_LOW_IS_LEFT
- return !readPin(SPLIT_HAND_PIN);
- # else
- return readPin(SPLIT_HAND_PIN);
- # endif
- #elif defined(SPLIT_HAND_MATRIX_GRID)
- # ifdef SPLIT_HAND_MATRIX_GRID_LOW_IS_RIGHT
- return peek_matrix_intersection(SPLIT_HAND_MATRIX_GRID);
- # else
- return !peek_matrix_intersection(SPLIT_HAND_MATRIX_GRID);
- # endif
- #elif defined(EE_HANDS)
- return eeconfig_read_handedness();
- #elif defined(MASTER_RIGHT)
- return !is_keyboard_master();
- #endif
- return is_keyboard_master();
- }
- __attribute__((weak)) bool is_keyboard_master(void) {
- static enum { UNKNOWN, MASTER, SLAVE } usbstate = UNKNOWN;
- // only check once, as this is called often
- if (usbstate == UNKNOWN) {
- usbstate = usbIsActive() ? MASTER : SLAVE;
- // Avoid NO_USB_STARTUP_CHECK - Disable USB as the previous checks seem to enable it somehow
- if (usbstate == SLAVE) {
- usb_disconnect();
- }
- }
- return (usbstate == MASTER);
- }
- // this code runs before the keyboard is fully initialized
- void split_pre_init(void) {
- isLeftHand = is_keyboard_left();
- #if defined(RGBLIGHT_ENABLE) && defined(RGBLED_SPLIT)
- uint8_t num_rgb_leds_split[2] = RGBLED_SPLIT;
- if (isLeftHand) {
- rgblight_set_clipping_range(0, num_rgb_leds_split[0]);
- } else {
- rgblight_set_clipping_range(num_rgb_leds_split[0], num_rgb_leds_split[1]);
- }
- #endif
- if (is_keyboard_master()) {
- #if defined(USE_I2C) && defined(SSD1306OLED)
- matrix_master_OLED_init();
- #endif
- transport_master_init();
- }
- }
- // this code runs after the keyboard is fully initialized
- // - avoids race condition during matrix_init_quantum where slave can start
- // receiving before the init process has completed
- void split_post_init(void) {
- if (!is_keyboard_master()) {
- transport_slave_init();
- }
- }
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