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175 lines
5.6 KiB
175 lines
5.6 KiB
#include <stdint.h>
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#include <stdbool.h>
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#include <string.h>
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#include "hal.h"
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#include "timer.h"
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#include "wait.h"
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#include "printf.h"
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#include "backlight.h"
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#include "matrix.h"
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/* Clueboard 60%
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*
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* Column pins are input with internal pull-down.
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* Row pins are output and strobe with high.
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* Key is high or 1 when it turns on.
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*
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* col: { PA2, PA3, PA6, PB14, PB15, PA8, PA9, PA7, PB3, PB4, PC15, PC14, PC13, PB5, PB6 }
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* row: { PB0, PB1, PB2, PA15, PA10 }
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*/
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/* matrix state(1:on, 0:off) */
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static matrix_row_t matrix[MATRIX_ROWS];
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static matrix_row_t matrix_debouncing[MATRIX_COLS];
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static bool debouncing = false;
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static uint16_t debouncing_time = 0;
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__attribute__ ((weak))
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void matrix_init_user(void) {}
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__attribute__ ((weak))
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void matrix_scan_user(void) {}
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__attribute__ ((weak))
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void matrix_init_kb(void) {
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matrix_init_user();
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}
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__attribute__ ((weak))
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void matrix_scan_kb(void) {
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matrix_scan_user();
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}
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void matrix_init(void) {
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printf("matrix init\n");
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//debug_matrix = true;
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/* Column(sense) */
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palSetPadMode(GPIOA, 2, PAL_MODE_OUTPUT_PUSHPULL);
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palSetPadMode(GPIOA, 3, PAL_MODE_OUTPUT_PUSHPULL);
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palSetPadMode(GPIOA, 6, PAL_MODE_OUTPUT_PUSHPULL);
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palSetPadMode(GPIOB, 14, PAL_MODE_OUTPUT_PUSHPULL);
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palSetPadMode(GPIOB, 15, PAL_MODE_OUTPUT_PUSHPULL);
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palSetPadMode(GPIOA, 8, PAL_MODE_OUTPUT_PUSHPULL);
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palSetPadMode(GPIOA, 9, PAL_MODE_OUTPUT_PUSHPULL);
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palSetPadMode(GPIOA, 7, PAL_MODE_OUTPUT_PUSHPULL);
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palSetPadMode(GPIOB, 3, PAL_MODE_OUTPUT_PUSHPULL);
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palSetPadMode(GPIOB, 4, PAL_MODE_OUTPUT_PUSHPULL);
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palSetPadMode(GPIOC, 15, PAL_MODE_OUTPUT_PUSHPULL);
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palSetPadMode(GPIOC, 14, PAL_MODE_OUTPUT_PUSHPULL);
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palSetPadMode(GPIOC, 13, PAL_MODE_OUTPUT_PUSHPULL);
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palSetPadMode(GPIOB, 5, PAL_MODE_OUTPUT_PUSHPULL);
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palSetPadMode(GPIOB, 6, PAL_MODE_OUTPUT_PUSHPULL);
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/* Row(strobe) */
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palSetPadMode(GPIOB, 0, PAL_MODE_INPUT_PULLDOWN);
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palSetPadMode(GPIOB, 1, PAL_MODE_INPUT_PULLDOWN);
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palSetPadMode(GPIOB, 2, PAL_MODE_INPUT_PULLDOWN);
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palSetPadMode(GPIOA, 15, PAL_MODE_INPUT_PULLDOWN);
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palSetPadMode(GPIOA, 10, PAL_MODE_INPUT_PULLDOWN);
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memset(matrix, 0, MATRIX_ROWS * sizeof(matrix_row_t));
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memset(matrix_debouncing, 0, MATRIX_COLS * sizeof(matrix_row_t));
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palClearPad(GPIOB, 7); // Turn off capslock
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matrix_init_quantum();
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}
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uint8_t matrix_scan(void) {
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for (int col = 0; col < MATRIX_COLS; col++) {
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matrix_row_t data = 0;
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// strobe col { PA2, PA3, PA6, PB14, PB15, PA8, PA9, PA7, PB3, PB4, PC14, PC15, PC13, PB5, PB6 }
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switch (col) {
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case 0: palSetPad(GPIOA, 2); break;
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case 1: palSetPad(GPIOA, 3); break;
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case 2: palSetPad(GPIOA, 6); break;
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case 3: palSetPad(GPIOB, 14); break;
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case 4: palSetPad(GPIOB, 15); break;
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case 5: palSetPad(GPIOA, 8); break;
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case 6: palSetPad(GPIOA, 9); break;
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case 7: palSetPad(GPIOA, 7); break;
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case 8: palSetPad(GPIOB, 3); break;
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case 9: palSetPad(GPIOB, 4); break;
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case 10: palSetPad(GPIOC, 15); break;
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case 11: palSetPad(GPIOC, 14); break;
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case 12: palSetPad(GPIOC, 13); break;
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case 13: palSetPad(GPIOB, 5); break;
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case 14: palSetPad(GPIOB, 6); break;
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}
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// need wait to settle pin state
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wait_us(20);
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// read row data { PB0, PB1, PB2, PA15, PA10 }
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data = (
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(palReadPad(GPIOB, 0) << 0 ) |
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(palReadPad(GPIOB, 1) << 1 ) |
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(palReadPad(GPIOB, 2) << 2 ) |
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(palReadPad(GPIOA, 15) << 3 ) |
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(palReadPad(GPIOA, 10) << 4 )
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);
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// unstrobe col { PA2, PA3, PA6, PB14, PB15, PA8, PA9, PA7, PB3, PB4, PC15, PC14, PC13, PB5, PB6 }
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switch (col) {
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case 0: palClearPad(GPIOA, 2); break;
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case 1: palClearPad(GPIOA, 3); break;
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case 2: palClearPad(GPIOA, 6); break;
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case 3: palClearPad(GPIOB, 14); break;
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case 4: palClearPad(GPIOB, 15); break;
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case 5: palClearPad(GPIOA, 8); break;
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case 6: palClearPad(GPIOA, 9); break;
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case 7: palClearPad(GPIOA, 7); break;
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case 8: palClearPad(GPIOB, 3); break;
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case 9: palClearPad(GPIOB, 4); break;
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case 10: palClearPad(GPIOC, 15); break;
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case 11: palClearPad(GPIOC, 14); break;
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case 12: palClearPad(GPIOC, 13); break;
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case 13: palClearPad(GPIOB, 5); break;
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case 14: palClearPad(GPIOB, 6); break;
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}
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if (matrix_debouncing[col] != data) {
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matrix_debouncing[col] = data;
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debouncing = true;
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debouncing_time = timer_read();
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}
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}
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if (debouncing && timer_elapsed(debouncing_time) > DEBOUNCE) {
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for (int row = 0; row < MATRIX_ROWS; row++) {
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matrix[row] = 0;
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for (int col = 0; col < MATRIX_COLS; col++) {
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matrix[row] |= ((matrix_debouncing[col] & (1 << row) ? 1 : 0) << col);
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}
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}
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debouncing = false;
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}
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matrix_scan_quantum();
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return 1;
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}
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bool matrix_is_on(uint8_t row, uint8_t col) {
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return (matrix[row] & (1<<col));
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}
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matrix_row_t matrix_get_row(uint8_t row) {
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return matrix[row];
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}
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void matrix_print(void) {
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printf("\nr/c 01234567\n");
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for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
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printf("%X0: ", row);
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matrix_row_t data = matrix_get_row(row);
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for (int col = 0; col < MATRIX_COLS; col++) {
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if (data & (1<<col))
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printf("1");
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else
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printf("0");
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}
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printf("\n");
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}
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}
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