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qmk_firmware/keyboards/clueboard2/matrix.c

96 lines
2.4 KiB
C

#include <stdint.h>
#include <stdbool.h>
#include <string.h>
#include "hal.h"
#include "timer.h"
#include "wait.h"
#include "printf.h"
#include "backlight.h"
#include "matrix.h"
/* Clueboard2
*
* Column pins are input with internal pull-down.
* Row pins are output and strobe with high.
* Key is high or 1 when it turns on.
*
* col: { PA3, PA2 }
* row: { PA1 }
*/
/* matrix state(1:on, 0:off) */
static matrix_row_t matrix[MATRIX_ROWS];
static matrix_row_t matrix_debouncing[MATRIX_ROWS];
static bool debouncing = false;
static uint16_t debouncing_time = 0;
void matrix_init(void) {
printf("matrix init\n");
//debug_matrix = true;
/* Column(sense) */
palSetPadMode(GPIOA, 3, PAL_MODE_INPUT_PULLDOWN);
palSetPadMode(GPIOA, 2, PAL_MODE_INPUT_PULLDOWN);
/* Row(strobe) */
palSetPadMode(GPIOA, 1, PAL_MODE_OUTPUT_PUSHPULL);
palSetPad(GPIOA, 1); // Only one row, so leave it in strobe state all the time.
// I did it this way so hardware hackers would have another
// pin to play with.
memset(matrix, 0, MATRIX_ROWS);
memset(matrix_debouncing, 0, MATRIX_ROWS);
/* Setup the backlight */
palSetPadMode(GPIOA, 4, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOB, 7, PAL_MODE_OUTPUT_PUSHPULL);
// Set them low to turn off the LEDs
palClearPad(GPIOA, 4);
palClearPad(GPIOB, 7);
}
uint8_t matrix_scan(void) {
matrix_row_t data = 0;
// read col data: { PA3, PA2 }
data = (palReadPad(GPIOA, 3) | (palReadPad(GPIOA, 2) << 1));
if (matrix_debouncing[0] != data) {
matrix_debouncing[0] = data;
debouncing = true;
debouncing_time = timer_read();
}
if (debouncing && timer_elapsed(debouncing_time) > DEBOUNCE) {
matrix[0] = matrix_debouncing[0];
debouncing = false;
}
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");
}
}