/** * matrix.c */ #include <stdint.h> #include <stdio.h> #include <stdbool.h> #include <string.h> #include <hal.h> #include "quantum.h" #include "timer.h" #include "wait.h" #include "print.h" #include "matrix.h" /** * * Row pins are input with internal pull-down. * Column pins are output and strobe with high. * Key is high or 1 when it turns on. * */ /* 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; void matrix_init(void) { //debug_enable = true; palSetLineMode(LINE_COL_1, PAL_MODE_OUTPUT_PUSHPULL); palSetLineMode(LINE_COL_2, PAL_MODE_OUTPUT_PUSHPULL); palSetLineMode(LINE_COL_3, PAL_MODE_OUTPUT_PUSHPULL); palSetLineMode(LINE_COL_4, PAL_MODE_OUTPUT_PUSHPULL); palSetLineMode(LINE_COL_5, PAL_MODE_OUTPUT_PUSHPULL); palSetLineMode(LINE_COL_6, PAL_MODE_OUTPUT_PUSHPULL); palSetLineMode(LINE_COL_7, PAL_MODE_OUTPUT_PUSHPULL); palSetLineMode(LINE_COL_8, PAL_MODE_OUTPUT_PUSHPULL); palSetLineMode(LINE_COL_9, PAL_MODE_OUTPUT_PUSHPULL); palSetLineMode(LINE_COL_10, PAL_MODE_OUTPUT_PUSHPULL); palSetLineMode(LINE_COL_11, PAL_MODE_OUTPUT_PUSHPULL); palSetLineMode(LINE_COL_12, PAL_MODE_OUTPUT_PUSHPULL); palSetLineMode(LINE_COL_13, PAL_MODE_OUTPUT_PUSHPULL); palSetLineMode(LINE_COL_14, PAL_MODE_OUTPUT_PUSHPULL); palSetLineMode(LINE_COL_15, PAL_MODE_OUTPUT_PUSHPULL); palSetLineMode(LINE_ROW_1, PAL_MODE_INPUT_PULLDOWN); palSetLineMode(LINE_ROW_2, PAL_MODE_INPUT_PULLDOWN); palSetLineMode(LINE_ROW_3, PAL_MODE_INPUT_PULLDOWN); palSetLineMode(LINE_ROW_4, PAL_MODE_INPUT_PULLDOWN); palSetLineMode(LINE_ROW_5, PAL_MODE_INPUT_PULLDOWN); palClearLine(LINE_COL_1); palClearLine(LINE_COL_2); palClearLine(LINE_COL_3); palClearLine(LINE_COL_4); palClearLine(LINE_COL_5); palClearLine(LINE_COL_6); palClearLine(LINE_COL_7); palClearLine(LINE_COL_8); palClearLine(LINE_COL_9); palClearLine(LINE_COL_10); palClearLine(LINE_COL_11); palClearLine(LINE_COL_12); palClearLine(LINE_COL_13); palClearLine(LINE_COL_14); palClearLine(LINE_COL_15); 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) { for (int col = 0; col < MATRIX_COLS; col++) { matrix_row_t data = 0; switch (col) { case 0: palSetLine(LINE_COL_1); break; case 1: palSetLine(LINE_COL_2); break; case 2: palSetLine(LINE_COL_3); break; case 3: palSetLine(LINE_COL_4); break; case 4: palSetLine(LINE_COL_5); break; case 5: palSetLine(LINE_COL_6); break; case 6: palSetLine(LINE_COL_7); break; case 7: palSetLine(LINE_COL_8); break; case 8: palSetLine(LINE_COL_9); break; case 9: palSetLine(LINE_COL_10); break; case 10: palSetLine(LINE_COL_11); break; case 11: palSetLine(LINE_COL_12); break; case 12: palSetLine(LINE_COL_13); break; case 13: palSetLine(LINE_COL_14); break; case 14: palSetLine(LINE_COL_15); break; } // need wait to settle pin state wait_us(20); data = ( (palReadLine(LINE_ROW_1) << 0 ) | (palReadLine(LINE_ROW_2) << 1 ) | (palReadLine(LINE_ROW_3) << 2 ) | (palReadLine(LINE_ROW_4) << 3 ) | (palReadLine(LINE_ROW_5) << 4 ) ); switch (col) { case 0: palClearLine(LINE_COL_1); break; case 1: palClearLine(LINE_COL_2); break; case 2: palClearLine(LINE_COL_3); break; case 3: palClearLine(LINE_COL_4); break; case 4: palClearLine(LINE_COL_5); break; case 5: palClearLine(LINE_COL_6); break; case 6: palClearLine(LINE_COL_7); break; case 7: palClearLine(LINE_COL_8); break; case 8: palClearLine(LINE_COL_9); break; case 9: palClearLine(LINE_COL_10); break; case 10: palClearLine(LINE_COL_11); break; case 11: palClearLine(LINE_COL_12); break; case 12: palClearLine(LINE_COL_13); break; case 13: palClearLine(LINE_COL_14); break; case 14: palClearLine(LINE_COL_15); 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) { printf("\nr/c 01234567\n"); for (uint8_t row = 0; row < MATRIX_ROWS; row++) { printf("%X0: ", row); matrix_row_t data = matrix_get_row(row); for (int col = 0; col < MATRIX_COLS; col++) { if (data & (1<<col)) printf("1"); else printf("0"); } printf("\n"); } }