diff options
Diffstat (limited to 'keyboards/infinity_chibios/matrix.c')
| -rw-r--r-- | keyboards/infinity_chibios/matrix.c | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/keyboards/infinity_chibios/matrix.c b/keyboards/infinity_chibios/matrix.c new file mode 100644 index 000000000..2c68ea83a --- /dev/null +++ b/keyboards/infinity_chibios/matrix.c @@ -0,0 +1,128 @@ +#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"); + } +} |