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78 lines
1.6 KiB
78 lines
1.6 KiB
7 years ago
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#include <stdint.h>
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#include <stdbool.h>
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#include <string.h>
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#include "hal.h"
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#include "timer.h"
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#include "wait.h"
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#include "printf.h"
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#include "backlight.h"
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#include "matrix.h"
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/* Clueboard 1%
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*
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* Single switch connected to A1 and GND.
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*
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* col: { GND }
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* row: { PA1 }
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*/
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/* matrix state(1:on, 0:off) */
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static matrix_row_t matrix[MATRIX_ROWS];
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static matrix_row_t matrix_debouncing[MATRIX_ROWS];
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static bool debouncing = false;
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static uint16_t debouncing_time = 0;
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void matrix_init(void) {
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printf("matrix init\n");
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/* Column(sense) */
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palSetPadMode(GPIOA, 1, PAL_MODE_INPUT_PULLUP);
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memset(matrix, 0, MATRIX_ROWS);
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memset(matrix_debouncing, 0, MATRIX_ROWS);
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}
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uint8_t matrix_scan(void) {
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matrix_row_t data = 0;
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// read switch data: { PA1 }
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data = (palReadPad(GPIOA, 1));
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if (matrix_debouncing[0] != data) {
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matrix_debouncing[0] = data;
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debouncing = true;
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debouncing_time = timer_read();
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}
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if (debouncing && timer_elapsed(debouncing_time) > DEBOUNCE) {
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matrix[0] = matrix_debouncing[0];
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debouncing = false;
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}
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return 1;
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}
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bool matrix_is_on(uint8_t row, uint8_t col) {
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return (matrix[row] & (1<<col));
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}
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matrix_row_t matrix_get_row(uint8_t row) {
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return matrix[row];
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}
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void matrix_print(void) {
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printf("\nr/c 01234567\n");
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for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
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printf("%X0: ", row);
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matrix_row_t data = matrix_get_row(row);
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for (int col = 0; col < MATRIX_COLS; col++) {
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if (data & (1<<col))
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printf("1");
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else
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printf("0");
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}
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printf("\n");
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}
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}
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