#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"); } }