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#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"
/* Clueboard 60%
*
* 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: { PA2, PA3, PA6, PB14, PB15, PA8, PA9, PA7, PB3, PB4, PC15, PC14, PC13, PB5, PB6 }
* row: { PB0, PB1, PB2, PA15, PA10 }
*/
/* 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) {
printf("matrix init\n");
//debug_matrix = true;
/* Column(sense) */
palSetPadMode(GPIOA, 2, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOA, 3, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOA, 6, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOB, 14, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOB, 15, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOA, 8, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOA, 9, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOA, 7, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOB, 3, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOB, 4, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOC, 15, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOC, 14, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOC, 13, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOB, 5, PAL_MODE_OUTPUT_PUSHPULL);
palSetPadMode(GPIOB, 6, PAL_MODE_OUTPUT_PUSHPULL);
/* Row(strobe) */
palSetPadMode(GPIOB, 0, PAL_MODE_INPUT_PULLDOWN);
palSetPadMode(GPIOB, 1, PAL_MODE_INPUT_PULLDOWN);
palSetPadMode(GPIOB, 2, PAL_MODE_INPUT_PULLDOWN);
palSetPadMode(GPIOA, 15, PAL_MODE_INPUT_PULLDOWN);
palSetPadMode(GPIOA, 10, PAL_MODE_INPUT_PULLDOWN);
memset(matrix, 0, MATRIX_ROWS);
memset(matrix_debouncing, 0, MATRIX_COLS);
/* Setup capslock */
// palSetPadMode(GPIOB, 7, PAL_MODE_OUTPUT_PUSHPULL);
// palClearPad(GPIOB, 7);
matrix_init_quantum();
}
uint8_t matrix_scan(void) {
for (int col = 0; col < MATRIX_COLS; col++) {
matrix_row_t data = 0;
// strobe col { PA2, PA3, PA6, PB14, PB15, PA8, PA9, PA7, PB3, PB4, PC14, PC15, PC13, PB5, PB6 }
switch (col) {
case 0: palSetPad(GPIOA, 2); break;
case 1: palSetPad(GPIOA, 3); break;
case 2: palSetPad(GPIOA, 6); break;
case 3: palSetPad(GPIOB, 14); break;
case 4: palSetPad(GPIOB, 15); break;
case 5: palSetPad(GPIOA, 8); break;
case 6: palSetPad(GPIOA, 9); break;
case 7: palSetPad(GPIOA, 7); break;
case 8: palSetPad(GPIOB, 3); break;
case 9: palSetPad(GPIOB, 4); break;
case 10: palSetPad(GPIOC, 15); break;
case 11: palSetPad(GPIOC, 14); break;
case 12: palSetPad(GPIOC, 13); break;
case 13: palSetPad(GPIOB, 5); break;
case 14: palSetPad(GPIOB, 6); break;
}
// need wait to settle pin state
wait_us(20);
// read row data { PB0, PB1, PB2, PA15, PA10 }
data = (
(palReadPad(GPIOB, 0) << 0 ) |
(palReadPad(GPIOB, 1) << 1 ) |
(palReadPad(GPIOB, 2) << 2 ) |
(palReadPad(GPIOA, 15) << 3 ) |
(palReadPad(GPIOA, 10) << 4 )
);
// unstrobe col { PA2, PA3, PA6, PB14, PB15, PA8, PA9, PA7, PB3, PB4, PC15, PC14, PC13, PB5, PB6 }
switch (col) {
case 0: palClearPad(GPIOA, 2); break;
case 1: palClearPad(GPIOA, 3); break;
case 2: palClearPad(GPIOA, 6); break;
case 3: palClearPad(GPIOB, 14); break;
case 4: palClearPad(GPIOB, 15); break;
case 5: palClearPad(GPIOA, 8); break;
case 6: palClearPad(GPIOA, 9); break;
case 7: palClearPad(GPIOA, 7); break;
case 8: palClearPad(GPIOB, 3); break;
case 9: palClearPad(GPIOB, 4); break;
case 10: palClearPad(GPIOC, 15); break;
case 11: palClearPad(GPIOC, 14); break;
case 12: palClearPad(GPIOC, 13); break;
case 13: palClearPad(GPIOB, 5); break;
case 14: palClearPad(GPIOB, 6); 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");
}
}
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