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Diffstat (limited to 'keyboards/xd84/matrix.c')
-rw-r--r-- | keyboards/xd84/matrix.c | 98 |
1 files changed, 0 insertions, 98 deletions
diff --git a/keyboards/xd84/matrix.c b/keyboards/xd84/matrix.c deleted file mode 100644 index 92b8ff8546..0000000000 --- a/keyboards/xd84/matrix.c +++ /dev/null @@ -1,98 +0,0 @@ -/* Copyright 2019 - * - * 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 <stdint.h> -#include <stdbool.h> -#include <avr/io.h> -#include <string.h> -#include "matrix.h" -#include "pca9555.h" -#include "quantum.h" - -#include "debug.h" - -// PCA9555 slave addresses -#define IC1 0x20 -#define IC2 0x21 - -//_____Utility funcs___________________________________________________________ - -static void init_pins(void) { - // init all cols high - IC2 all input - pca9555_set_config(IC2, PCA9555_PORT0, ALL_INPUT); // same as initial state - pca9555_set_config(IC2, PCA9555_PORT1, ALL_INPUT); // same as initial state - - // init all rows - IC1 port0 input - pca9555_set_config(IC1, PCA9555_PORT0, ALL_INPUT); // same as initial state - pca9555_set_output(IC1, PCA9555_PORT0, ALL_LOW); -} - -static void select_row(uint8_t row) { - // For the XD84 all rows are on the same IC and port - // so its safe enough to assume here row == pin - uint8_t pin = row; - uint8_t mask = 1 << pin; - - // we configure output once in init, as pca9555 remembers state when flipping between input/output - // pca9555_set_output(IC1, PCA9555_PORT0, ALL_HIGH & (~mask)); - pca9555_set_config(IC1, PCA9555_PORT0, ALL_INPUT & (~mask)); -} - -static uint16_t read_cols(void) { - // uint16_t state_1 = pca9555_readPins(IC2, PCA9555_PORT0); - // uint16_t state_2 = pca9555_readPins(IC2, PCA9555_PORT1); - uint16_t state = pca9555_readAllPins(IC2); - - // For the XD84 all cols are on the same IC and mapped sequentially - // while this technically gives 16 column reads, - // the 16th column can never be set so is safely ignored - // return ~((state_2 << 8) | state_1); - return ~state; -} - -static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) { - // Store last value of row prior to reading - matrix_row_t last_row_value = current_matrix[current_row]; - - // Clear data in matrix row - current_matrix[current_row] = 0; - - // Select row and wait for row selection to stabilize - select_row(current_row); - // Skip the wait_us(30); as i2c is slow enough to debounce the io changes - - current_matrix[current_row] = read_cols(); - - // No need to Unselect row as the next `select_row` will blank everything - - return (last_row_value != current_matrix[current_row]); -} - -//_____CUSTOM MATRIX IMPLEMENTATION____________________________________________________ - -void matrix_init_custom(void) { - pca9555_init(IC1); - pca9555_init(IC2); - - init_pins(); -} - -bool matrix_scan_custom(matrix_row_t current_matrix[]) { - bool changed = false; - for (uint8_t current_row = 0; current_row < MATRIX_ROWS; current_row++) { - changed |= read_cols_on_row(current_matrix, current_row); - } - return changed; -} |