- /**
- * matrix.c
- */
-
- #include "matrix.h"
- #include "timer.h"
- #include "wait.h"
- #include "print.h"
-
- #ifndef DEBOUNCE
- # define DEBOUNCE 5
- #endif
-
- /**
- *
- * 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;
-
- // user-defined overridable functions
-
- __attribute__((weak)) void matrix_init_kb(void) { matrix_init_user(); }
-
- __attribute__((weak)) void matrix_scan_kb(void) { matrix_scan_user(); }
-
- __attribute__((weak)) void matrix_init_user(void) {}
-
- __attribute__((weak)) void matrix_scan_user(void) {}
-
- // helper functions
- 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_kb();
- }
-
- 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_kb();
-
- 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("%X0: ", row);
- 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");
- }
- }
|