mirror of
https://github.com/Keychron/qmk_firmware.git
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183 lines
5.8 KiB
C
183 lines
5.8 KiB
C
/**
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* matrix.c
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*/
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#include <stdint.h>
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#include <stdio.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 "quantum.h"
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#include "timer.h"
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#include "wait.h"
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#include "print.h"
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#include "matrix.h"
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#ifndef DEBOUNCE
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# define DEBOUNCE 5
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#endif
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/**
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*
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* Row pins are input with internal pull-down.
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* Column 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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*/
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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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// user-defined overridable functions
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__attribute__((weak)) void matrix_init_kb(void) { matrix_init_user(); }
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__attribute__((weak)) void matrix_scan_kb(void) { matrix_scan_user(); }
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__attribute__((weak)) void matrix_init_user(void) {}
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__attribute__((weak)) void matrix_scan_user(void) {}
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// helper functions
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void matrix_init(void)
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{
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//debug_enable = true;
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palSetLineMode(LINE_COL_1, PAL_MODE_OUTPUT_PUSHPULL);
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palSetLineMode(LINE_COL_2, PAL_MODE_OUTPUT_PUSHPULL);
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palSetLineMode(LINE_COL_3, PAL_MODE_OUTPUT_PUSHPULL);
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palSetLineMode(LINE_COL_4, PAL_MODE_OUTPUT_PUSHPULL);
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palSetLineMode(LINE_COL_5, PAL_MODE_OUTPUT_PUSHPULL);
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palSetLineMode(LINE_COL_6, PAL_MODE_OUTPUT_PUSHPULL);
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palSetLineMode(LINE_COL_7, PAL_MODE_OUTPUT_PUSHPULL);
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palSetLineMode(LINE_COL_8, PAL_MODE_OUTPUT_PUSHPULL);
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palSetLineMode(LINE_COL_9, PAL_MODE_OUTPUT_PUSHPULL);
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palSetLineMode(LINE_COL_10, PAL_MODE_OUTPUT_PUSHPULL);
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palSetLineMode(LINE_COL_11, PAL_MODE_OUTPUT_PUSHPULL);
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palSetLineMode(LINE_COL_12, PAL_MODE_OUTPUT_PUSHPULL);
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palSetLineMode(LINE_COL_13, PAL_MODE_OUTPUT_PUSHPULL);
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palSetLineMode(LINE_COL_14, PAL_MODE_OUTPUT_PUSHPULL);
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palSetLineMode(LINE_COL_15, PAL_MODE_OUTPUT_PUSHPULL);
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palSetLineMode(LINE_ROW_1, PAL_MODE_INPUT_PULLDOWN);
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palSetLineMode(LINE_ROW_2, PAL_MODE_INPUT_PULLDOWN);
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palSetLineMode(LINE_ROW_3, PAL_MODE_INPUT_PULLDOWN);
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palSetLineMode(LINE_ROW_4, PAL_MODE_INPUT_PULLDOWN);
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palSetLineMode(LINE_ROW_5, PAL_MODE_INPUT_PULLDOWN);
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palClearLine(LINE_COL_1);
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palClearLine(LINE_COL_2);
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palClearLine(LINE_COL_3);
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palClearLine(LINE_COL_4);
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palClearLine(LINE_COL_5);
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palClearLine(LINE_COL_6);
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palClearLine(LINE_COL_7);
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palClearLine(LINE_COL_8);
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palClearLine(LINE_COL_9);
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palClearLine(LINE_COL_10);
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palClearLine(LINE_COL_11);
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palClearLine(LINE_COL_12);
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palClearLine(LINE_COL_13);
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palClearLine(LINE_COL_14);
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palClearLine(LINE_COL_15);
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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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matrix_init_kb();
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}
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uint8_t matrix_scan(void)
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{
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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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switch (col) {
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case 0: palSetLine(LINE_COL_1); break;
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case 1: palSetLine(LINE_COL_2); break;
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case 2: palSetLine(LINE_COL_3); break;
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case 3: palSetLine(LINE_COL_4); break;
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case 4: palSetLine(LINE_COL_5); break;
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case 5: palSetLine(LINE_COL_6); break;
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case 6: palSetLine(LINE_COL_7); break;
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case 7: palSetLine(LINE_COL_8); break;
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case 8: palSetLine(LINE_COL_9); break;
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case 9: palSetLine(LINE_COL_10); break;
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case 10: palSetLine(LINE_COL_11); break;
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case 11: palSetLine(LINE_COL_12); break;
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case 12: palSetLine(LINE_COL_13); break;
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case 13: palSetLine(LINE_COL_14); break;
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case 14: palSetLine(LINE_COL_15); 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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data = (
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(palReadLine(LINE_ROW_1) << 0 ) |
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(palReadLine(LINE_ROW_2) << 1 ) |
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(palReadLine(LINE_ROW_3) << 2 ) |
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(palReadLine(LINE_ROW_4) << 3 ) |
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(palReadLine(LINE_ROW_5) << 4 )
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);
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switch (col) {
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case 0: palClearLine(LINE_COL_1); break;
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case 1: palClearLine(LINE_COL_2); break;
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case 2: palClearLine(LINE_COL_3); break;
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case 3: palClearLine(LINE_COL_4); break;
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case 4: palClearLine(LINE_COL_5); break;
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case 5: palClearLine(LINE_COL_6); break;
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case 6: palClearLine(LINE_COL_7); break;
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case 7: palClearLine(LINE_COL_8); break;
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case 8: palClearLine(LINE_COL_9); break;
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case 9: palClearLine(LINE_COL_10); break;
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case 10: palClearLine(LINE_COL_11); break;
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case 11: palClearLine(LINE_COL_12); break;
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case 12: palClearLine(LINE_COL_13); break;
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case 13: palClearLine(LINE_COL_14); break;
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case 14: palClearLine(LINE_COL_15); 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_kb();
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return 1;
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}
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bool matrix_is_on(uint8_t row, uint8_t col) { return (matrix[row] & (1<<col)); }
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matrix_row_t matrix_get_row(uint8_t row) { return matrix[row]; }
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void matrix_print(void)
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{
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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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