11 /* matrix state(1:on, 0:off) */
12 static matrix_row_t matrix[MATRIX_ROWS];
13 static matrix_row_t matrix_debouncing[MATRIX_ROWS];
14 static bool debouncing = false;
15 static uint16_t debouncing_time = 0;
17 void matrix_init(void)
22 palSetPadMode(GPIOD, 5, PAL_MODE_INPUT_PULLDOWN);
23 palSetPadMode(GPIOD, 6, PAL_MODE_INPUT_PULLDOWN);
24 palSetPadMode(GPIOD, 7, PAL_MODE_INPUT_PULLDOWN);
25 palSetPadMode(GPIOC, 1, PAL_MODE_INPUT_PULLDOWN);
26 palSetPadMode(GPIOC, 2, PAL_MODE_INPUT_PULLDOWN);
27 palSetPadMode(GPIOC, 3, PAL_MODE_INPUT_PULLDOWN);
28 palSetPadMode(GPIOC, 4, PAL_MODE_INPUT_PULLDOWN);
29 palSetPadMode(GPIOC, 5, PAL_MODE_INPUT_PULLDOWN);
30 palSetPadMode(GPIOC, 6, PAL_MODE_INPUT_PULLDOWN);
31 palSetPadMode(GPIOC, 7, PAL_MODE_INPUT_PULLDOWN);
34 palSetPadMode(GPIOB, 2, PAL_MODE_OUTPUT_PUSHPULL);
35 palSetPadMode(GPIOB, 3, PAL_MODE_OUTPUT_PUSHPULL);
36 palSetPadMode(GPIOB, 18, PAL_MODE_OUTPUT_PUSHPULL);
37 palSetPadMode(GPIOB, 19, PAL_MODE_OUTPUT_PUSHPULL);
38 palSetPadMode(GPIOC, 0, PAL_MODE_OUTPUT_PUSHPULL);
39 palSetPadMode(GPIOC, 8, PAL_MODE_OUTPUT_PUSHPULL);
40 palSetPadMode(GPIOC, 9, PAL_MODE_OUTPUT_PUSHPULL);
41 palSetPadMode(GPIOD, 0, PAL_MODE_OUTPUT_PUSHPULL);
42 palSetPadMode(GPIOD, 1, PAL_MODE_OUTPUT_PUSHPULL);
43 palSetPadMode(GPIOD, 4, PAL_MODE_OUTPUT_PUSHPULL);
45 memset(matrix, 0, MATRIX_ROWS * sizeof(matrix_row_t));
46 memset(matrix_debouncing, 0, MATRIX_ROWS * sizeof(matrix_row_t));
48 matrix_init_quantum();
51 uint8_t matrix_scan(void)
53 for (int row = 0; row < MATRIX_ROWS; row++) {
54 matrix_row_t data = 0;
57 case 0: palSetPad(GPIOB, 2); break;
58 case 1: palSetPad(GPIOB, 3); break;
59 case 2: palSetPad(GPIOB, 18); break;
60 case 3: palSetPad(GPIOB, 19); break;
61 case 4: palSetPad(GPIOC, 0); break;
62 case 5: palSetPad(GPIOC, 8); break;
63 case 6: palSetPad(GPIOC, 9); break;
64 case 7: palSetPad(GPIOD, 0); break;
65 case 8: palSetPad(GPIOD, 1); break;
66 case 9: palSetPad(GPIOD, 4); break;
69 // need wait to settle pin state
70 // if you wait too short, or have a too high update rate
71 // the keyboard might freeze, or there might not be enough
72 // processing power to update the LCD screen properly.
73 // 20us, or two ticks at 100000Hz seems to be OK
76 // read col data: { PTD5, PTD6, PTD7, PTC1, PTC2, PTC3, PTC4, PTC5, PTC6, PTC7 }
77 data = ((palReadPort(GPIOC) & 0xFEUL) << 2) |
78 ((palReadPort(GPIOD) & 0xE0UL) >> 5);
82 case 0: palClearPad(GPIOB, 2); break;
83 case 1: palClearPad(GPIOB, 3); break;
84 case 2: palClearPad(GPIOB, 18); break;
85 case 3: palClearPad(GPIOB, 19); break;
86 case 4: palClearPad(GPIOC, 0); break;
87 case 5: palClearPad(GPIOC, 8); break;
88 case 6: palClearPad(GPIOC, 9); break;
89 case 7: palClearPad(GPIOD, 0); break;
90 case 8: palClearPad(GPIOD, 1); break;
91 case 9: palClearPad(GPIOD, 4); break;
94 if (matrix_debouncing[row] != data) {
95 matrix_debouncing[row] = data;
97 debouncing_time = timer_read();
101 if (debouncing && timer_elapsed(debouncing_time) > DEBOUNCE) {
102 for (int row = 0; row < MATRIX_ROWS; row++) {
103 matrix[row] = matrix_debouncing[row];
108 matrix_scan_quantum();
112 bool matrix_is_on(uint8_t row, uint8_t col)
114 return (matrix[row] & (1 << col));
117 matrix_row_t matrix_get_row(uint8_t row)
122 void matrix_print(void)
124 xprintf("\nr/c 01234567\n");
125 for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
126 xprintf("%02X: ", row);
127 matrix_row_t data = matrix_get_row(row);
128 for (int col = 0; col < MATRIX_COLS; col++) {