diff options
Diffstat (limited to 'keyboards/whitefox/matrix.c')
| -rw-r--r-- | keyboards/whitefox/matrix.c | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/keyboards/whitefox/matrix.c b/keyboards/whitefox/matrix.c new file mode 100644 index 0000000000..9202ab0231 --- /dev/null +++ b/keyboards/whitefox/matrix.c @@ -0,0 +1,132 @@ +#include <stdint.h> +#include <stdbool.h> +#include <string.h> +#include "hal.h" +#include "timer.h" +#include "wait.h" +#include "print.h" +#include "matrix.h" + + +/* + * Matt3o's WhiteFox + * 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: { PTD0, PTD1, PTD4, PTD5, PTD6, PTD7, PTC1, PTC2 } + * row: { PTB2, PTB3, PTB18, PTB19, PTC0, PTC8, PTC9, PTC10, PTC11 } + */ +/* 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) +{ +//debug_matrix = true; + /* Column(sense) */ + palSetPadMode(GPIOD, 0, PAL_MODE_INPUT_PULLDOWN); + palSetPadMode(GPIOD, 1, 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); + palSetPadMode(GPIOC, 1, PAL_MODE_INPUT_PULLDOWN); + palSetPadMode(GPIOC, 2, PAL_MODE_INPUT_PULLDOWN); + + /* Row(strobe) */ + palSetPadMode(GPIOB, 2, PAL_MODE_OUTPUT_PUSHPULL); + palSetPadMode(GPIOB, 3, PAL_MODE_OUTPUT_PUSHPULL); + palSetPadMode(GPIOB, 18, PAL_MODE_OUTPUT_PUSHPULL); + palSetPadMode(GPIOB, 19, PAL_MODE_OUTPUT_PUSHPULL); + palSetPadMode(GPIOC, 0, PAL_MODE_OUTPUT_PUSHPULL); + palSetPadMode(GPIOC, 8, PAL_MODE_OUTPUT_PUSHPULL); + palSetPadMode(GPIOC, 9, PAL_MODE_OUTPUT_PUSHPULL); + palSetPadMode(GPIOC, 10, PAL_MODE_OUTPUT_PUSHPULL); + palSetPadMode(GPIOC, 11, 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, 2); break; + case 1: palSetPad(GPIOB, 3); break; + case 2: palSetPad(GPIOB, 18); break; + case 3: palSetPad(GPIOB, 19); break; + case 4: palSetPad(GPIOC, 0); break; + case 5: palSetPad(GPIOC, 8); break; + case 6: palSetPad(GPIOC, 9); break; + case 7: palSetPad(GPIOC, 10); break; + case 8: palSetPad(GPIOC, 11); break; + } + + wait_us(20); // need wait to settle pin state + + // read col data: { PTD0, PTD1, PTD4, PTD5, PTD6, PTD7, PTC1, PTC2 } + data = ((palReadPort(GPIOC) & 0x06UL) << 5) | + ((palReadPort(GPIOD) & 0xF0UL) >> 2) | + (palReadPort(GPIOD) & 0x03UL); + + // un-strobe row + switch (row) { + case 0: palClearPad(GPIOB, 2); break; + case 1: palClearPad(GPIOB, 3); break; + case 2: palClearPad(GPIOB, 18); break; + case 3: palClearPad(GPIOB, 19); break; + case 4: palClearPad(GPIOC, 0); break; + case 5: palClearPad(GPIOC, 8); break; + case 6: palClearPad(GPIOC, 9); break; + case 7: palClearPad(GPIOC, 10); break; + case 8: palClearPad(GPIOC, 11); 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("%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"); + } +} |