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/* Copyright 2021 3araht
*
* 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 "bandominedoni.h"
#if defined(SPLIT_HAND_MATRIX_GRID)
static uint8_t peek_matrix_intersection(pin_t out_pin, pin_t in_pin) {
gpio_set_pin_input_high(in_pin);
gpio_set_pin_output(out_pin);
gpio_write_pin_low(out_pin);
// It's almost unnecessary, but wait until it's down to low, just in case.
wait_us(1);
uint8_t pin_state = gpio_read_pin(in_pin);
// Set out_pin to a setting that is less susceptible to noise.
gpio_set_pin_input_high(out_pin);
matrix_io_delay(); // Wait for the pull-up to go HIGH.
return pin_state;
}
#endif
// Overriding is_keyboard_left() in qmk_firmware/quantum/split_common/split_util.c to limit the handedness check only once.
// reason: bandoMIneDonI has no space on right hand side to use "SPLIT_HAND_MATRIX_GRID".
// However, It enables to decide the handedness by the HW by adding one condition: "not to press any keys (especially r30) dusing startup."
bool is_keyboard_left(void) {
static enum { UNKNOWN, LEFT, RIGHT } hand_side = UNKNOWN;
// only check once, as this is called often
if (hand_side == UNKNOWN) {
#if defined(SPLIT_HAND_PIN)
// Test pin SPLIT_HAND_PIN for High/Low, if low it's right hand
gpio_set_pin_input(SPLIT_HAND_PIN);
hand_side = gpio_read_pin(SPLIT_HAND_PIN) ? LEFT : RIGHT;
return (hand_side == LEFT);
#elif defined(SPLIT_HAND_MATRIX_GRID)
# ifdef SPLIT_HAND_MATRIX_GRID_LOW_IS_LEFT
hand_side = peek_matrix_intersection(SPLIT_HAND_MATRIX_GRID) ? RIGHT : LEFT;
return (hand_side == LEFT);
# else
hand_side = peek_matrix_intersection(SPLIT_HAND_MATRIX_GRID) ? LEFT : RIGHT;
return (hand_side == LEFT);
# endif
#elif defined(EE_HANDS)
hand_side = eeconfig_read_handedness() ? LEFT : RIGHT;
return (hand_side == LEFT);
#elif defined(MASTER_RIGHT)
hand_side = !is_keyboard_master() ? LEFT : RIGHT;
return (hand_side == LEFT);
#endif
hand_side = is_keyboard_master() ? LEFT : RIGHT;
return (hand_side == LEFT);
} else {
return (hand_side == LEFT);
}
}
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