//#include <stdint.h> //#include <stdbool.h> #include <string.h> #include "hal.h" #include "timer.h" #include "wait.h" #include "print.h" #include "matrix.h" #include "debug.h" /* 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, 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); palSetPadMode(GPIOC, 3, PAL_MODE_INPUT_PULLDOWN); palSetPadMode(GPIOC, 4, PAL_MODE_INPUT_PULLDOWN); palSetPadMode(GPIOC, 5, PAL_MODE_INPUT_PULLDOWN); palSetPadMode(GPIOC, 6, PAL_MODE_INPUT_PULLDOWN); palSetPadMode(GPIOC, 7, 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(GPIOD, 0, PAL_MODE_OUTPUT_PUSHPULL); palSetPadMode(GPIOD, 1, PAL_MODE_OUTPUT_PUSHPULL); palSetPadMode(GPIOD, 4, PAL_MODE_OUTPUT_PUSHPULL); memset(matrix, 0, MATRIX_ROWS * sizeof(matrix_row_t)); memset(matrix_debouncing, 0, MATRIX_ROWS * sizeof(matrix_row_t)); matrix_init_quantum(); } 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(GPIOD, 0); break; case 8: palSetPad(GPIOD, 1); break; case 9: palSetPad(GPIOD, 4); break; } // need wait to settle pin state // if you wait too short, or have a too high update rate // the keyboard might freeze, or there might not be enough // processing power to update the LCD screen properly. // 20us, or two ticks at 100000Hz seems to be OK wait_us(20); // read col data: { PTD5, PTD6, PTD7, PTC1, PTC2, PTC3, PTC4, PTC5, PTC6, PTC7 } data = ((palReadPort(GPIOC) & 0xFEUL) << 2) | ((palReadPort(GPIOD) & 0xE0UL) >> 5); // 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(GPIOD, 0); break; case 8: palClearPad(GPIOD, 1); break; case 9: palClearPad(GPIOD, 4); 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; } matrix_scan_quantum(); 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: ", 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"); } wait_ms(50); }