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- #include <stdint.h>
- #include <stdbool.h>
- #include <string.h>
- #include "hal.h"
- #include "timer.h"
- #include "wait.h"
- #include "print.h"
- #include "matrix.h"
-
-
- /*
- * Infinity Pinusage:
- * 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: { PTD1, PTD2, PTD3, PTD4, PTD5, PTD6, PTD7 }
- * row: { PTB0, PTB1, PTB2, PTB3, PTB16, PTB17, PTC4, PTC5, PTD0 }
- */
- /* 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)
- {
- /* Column(sense) */
- palSetPadMode(GPIOD, 1, PAL_MODE_INPUT_PULLDOWN);
- palSetPadMode(GPIOD, 2, PAL_MODE_INPUT_PULLDOWN);
- palSetPadMode(GPIOD, 3, PAL_MODE_INPUT_PULLDOWN);
- palSetPadMode(GPIOD, 4, PAL_MODE_INPUT_PULLDOWN);
- palSetPadMode(GPIOD, 5, PAL_MODE_INPUT_PULLDOWN);
- palSetPadMode(GPIOD, 6, PAL_MODE_INPUT_PULLDOWN);
- palSetPadMode(GPIOD, 7, PAL_MODE_INPUT_PULLDOWN);
-
- /* Row(strobe) */
- palSetPadMode(GPIOB, 0, PAL_MODE_OUTPUT_PUSHPULL);
- palSetPadMode(GPIOB, 1, PAL_MODE_OUTPUT_PUSHPULL);
- palSetPadMode(GPIOB, 2, PAL_MODE_OUTPUT_PUSHPULL);
- palSetPadMode(GPIOB, 3, PAL_MODE_OUTPUT_PUSHPULL);
- palSetPadMode(GPIOB, 16, PAL_MODE_OUTPUT_PUSHPULL);
- palSetPadMode(GPIOB, 17, PAL_MODE_OUTPUT_PUSHPULL);
- palSetPadMode(GPIOC, 4, PAL_MODE_OUTPUT_PUSHPULL);
- palSetPadMode(GPIOC, 5, PAL_MODE_OUTPUT_PUSHPULL);
- palSetPadMode(GPIOD, 0, PAL_MODE_OUTPUT_PUSHPULL);
-
- memset(matrix, 0, MATRIX_ROWS);
- memset(matrix_debouncing, 0, MATRIX_ROWS);
- }
-
- uint8_t matrix_scan(void)
- {
- for (int row = 0; row < MATRIX_ROWS; row++) {
- matrix_row_t data = 0;
-
- // strobe row
- switch (row) {
- case 0: palSetPad(GPIOB, 0); break;
- case 1: palSetPad(GPIOB, 1); break;
- case 2: palSetPad(GPIOB, 2); break;
- case 3: palSetPad(GPIOB, 3); break;
- case 4: palSetPad(GPIOB, 16); break;
- case 5: palSetPad(GPIOB, 17); break;
- case 6: palSetPad(GPIOC, 4); break;
- case 7: palSetPad(GPIOC, 5); break;
- case 8: palSetPad(GPIOD, 0); break;
- }
-
- wait_us(1); // need wait to settle pin state
-
- // read col data
- data = (palReadPort(GPIOD)>>1);
-
- // un-strobe row
- switch (row) {
- case 0: palClearPad(GPIOB, 0); break;
- case 1: palClearPad(GPIOB, 1); break;
- case 2: palClearPad(GPIOB, 2); break;
- case 3: palClearPad(GPIOB, 3); break;
- case 4: palClearPad(GPIOB, 16); break;
- case 5: palClearPad(GPIOB, 17); break;
- case 6: palClearPad(GPIOC, 4); break;
- case 7: palClearPad(GPIOC, 5); break;
- case 8: palClearPad(GPIOD, 0); break;
- }
-
- if (matrix_debouncing[row] != data) {
- matrix_debouncing[row] = data;
- debouncing = true;
- debouncing_time = timer_read();
- }
- }
-
- if (debouncing && timer_elapsed(debouncing_time) > DEBOUNCE) {
- for (int row = 0; row < MATRIX_ROWS; row++) {
- matrix[row] = matrix_debouncing[row];
- }
- 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)
- {
- xprintf("\nr/c 01234567\n");
- for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
- xprintf("%02X: ");
- matrix_row_t data = matrix_get_row(row);
- for (int col = 0; col < MATRIX_COLS; col++) {
- if (data & (1<<col))
- xprintf("1");
- else
- xprintf("0");
- }
- xprintf("\n");
- }
- }
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