qmk_firmware/keyboards/pierce/matrix.c

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/* Copyright 2022 durken (https://github.com/durken1/)
*
* 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 "quantum.h"
#include "i2c_slave.h"
#define MY_I2C_ADDRESS (0x20U << 1)
void matrix_init_custom(void) {
i2c_slave_init(MY_I2C_ADDRESS);
}
bool matrix_scan_custom(matrix_row_t current_matrix[]) {
bool matrix_has_changed = false;
matrix_row_t current_row_value;
for (uint8_t current_row = 0; current_row < MATRIX_ROWS; current_row++) {
current_row_value = 0; // Start with empty row
current_row_value |= (((matrix_row_t)(i2c_slave_reg[current_row+4])) << 5); // Add left half scan
current_row_value |= ((matrix_row_t)i2c_slave_reg[current_row]); // Add right half scan
if (current_matrix[current_row] != current_row_value) {
matrix_has_changed = true;
}
current_matrix[current_row] = current_row_value;
}
return matrix_has_changed;
}