/* * Copyright 2018 Jack Humbert <jack.humb@gmail.com> * * 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 <string.h> #include "hal.h" #include "timer.h" #include "wait.h" #include "debug.h" #include "matrix.h" /* * col: { B11, B10, B2, B1, A7, B0 } * row: { A10, A9, A8, B15, C13, C14, C15, A2 } */ /* matrix state(1:on, 0:off) */ static matrix_row_t matrix[MATRIX_ROWS]; static matrix_row_t matrix_debouncing[MATRIX_COLS]; static bool debouncing = false; static uint16_t debouncing_time = 0; __attribute__((weak)) void matrix_init_user(void) {} __attribute__((weak)) void matrix_scan_user(void) {} __attribute__((weak)) void matrix_init_kb(void) { matrix_init_user(); } __attribute__((weak)) void matrix_scan_kb(void) { matrix_scan_user(); } void matrix_init(void) { dprintf("matrix init\n"); // debug_matrix = true; // actual matrix setup palSetPadMode(GPIOB, 11, PAL_MODE_OUTPUT_PUSHPULL); palSetPadMode(GPIOB, 10, PAL_MODE_OUTPUT_PUSHPULL); palSetPadMode(GPIOB, 2, PAL_MODE_OUTPUT_PUSHPULL); palSetPadMode(GPIOB, 1, PAL_MODE_OUTPUT_PUSHPULL); palSetPadMode(GPIOA, 7, PAL_MODE_OUTPUT_PUSHPULL); palSetPadMode(GPIOB, 0, PAL_MODE_OUTPUT_PUSHPULL); palSetPadMode(GPIOA, 10, PAL_MODE_INPUT_PULLDOWN); palSetPadMode(GPIOA, 9, PAL_MODE_INPUT_PULLDOWN); palSetPadMode(GPIOA, 8, PAL_MODE_INPUT_PULLDOWN); palSetPadMode(GPIOB, 15, PAL_MODE_INPUT_PULLDOWN); palSetPadMode(GPIOC, 13, PAL_MODE_INPUT_PULLDOWN); palSetPadMode(GPIOC, 14, PAL_MODE_INPUT_PULLDOWN); palSetPadMode(GPIOC, 15, PAL_MODE_INPUT_PULLDOWN); palSetPadMode(GPIOA, 2, PAL_MODE_INPUT_PULLDOWN); memset(matrix, 0, MATRIX_ROWS * sizeof(matrix_row_t)); memset(matrix_debouncing, 0, MATRIX_COLS * sizeof(matrix_row_t)); matrix_init_quantum(); } uint8_t matrix_scan(void) { // actual matrix for (int col = 0; col < MATRIX_COLS; col++) { matrix_row_t data = 0; // strobe col { B11, B10, B2, B1, A7, B0 } switch (col) { case 0: palSetPad(GPIOB, 11); break; case 1: palSetPad(GPIOB, 10); break; case 2: palSetPad(GPIOB, 2); break; case 3: palSetPad(GPIOB, 1); break; case 4: palSetPad(GPIOA, 7); break; case 5: palSetPad(GPIOB, 0); break; } // need wait to settle pin state wait_us(20); // read row data { A10, A9, A8, B15, C13, C14, C15, A2 } data = ((palReadPad(GPIOA, 10) << 0) | (palReadPad(GPIOA, 9) << 1) | (palReadPad(GPIOA, 8) << 2) | (palReadPad(GPIOB, 15) << 3) | (palReadPad(GPIOC, 13) << 4) | (palReadPad(GPIOC, 14) << 5) | (palReadPad(GPIOC, 15) << 6) | (palReadPad(GPIOA, 2) << 7)); // unstrobe col { B11, B10, B2, B1, A7, B0 } switch (col) { case 0: palClearPad(GPIOB, 11); break; case 1: palClearPad(GPIOB, 10); break; case 2: palClearPad(GPIOB, 2); break; case 3: palClearPad(GPIOB, 1); break; case 4: palClearPad(GPIOA, 7); break; case 5: palClearPad(GPIOB, 0); break; } if (matrix_debouncing[col] != data) { matrix_debouncing[col] = data; debouncing = true; debouncing_time = timer_read(); } } if (debouncing && timer_elapsed(debouncing_time) > DEBOUNCE) { for (int row = 0; row < MATRIX_ROWS; row++) { matrix[row] = 0; for (int col = 0; col < MATRIX_COLS; col++) { matrix[row] |= ((matrix_debouncing[col] & (1 << row) ? 1 : 0) << col); } } debouncing = false; } matrix_scan_quantum(); return 1; } bool matrix_is_on(uint8_t row, uint8_t col) { return (matrix[row] & (1 << col)); } matrix_row_t matrix_get_row(uint8_t row) { return matrix[row]; } void matrix_print(void) { dprintf("\nr/c 01234567\n"); for (uint8_t row = 0; row < MATRIX_ROWS; row++) { dprintf("%X0: ", row); matrix_row_t data = matrix_get_row(row); for (int col = 0; col < MATRIX_COLS; col++) { if (data & (1 << col)) dprintf("1"); else dprintf("0"); } dprintf("\n"); } }