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160 lines
3.2 KiB
160 lines
3.2 KiB
#include <stdint.h>
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#include <stdbool.h>
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#include <avr/io.h>
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#include "wait.h"
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#include "action_layer.h"
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#include "print.h"
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#include "debug.h"
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#include "util.h"
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#include "timer.h"
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#include "matrix.h"
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#include "switch_board.h"
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#define DEBOUNCE_DN_MASK (uint8_t)(~(0x80 >> 5))
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#define DEBOUNCE_UP_MASK (uint8_t)(0x80 >> 5)
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static matrix_row_t matrix[MATRIX_ROWS] = {0};
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static uint16_t matrix_scan_timestamp = 0;
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static uint8_t matrix_debouncing[MATRIX_ROWS][MATRIX_COLS] = {0};
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static void select_next_key(uint8_t mode);
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static uint8_t get_key(uint8_t col);
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static void init_cols(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_scan_kb(void) {
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matrix_scan_user();
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}
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inline
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uint8_t matrix_rows(void)
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{
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return MATRIX_ROWS;
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}
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inline
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uint8_t matrix_cols(void)
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{
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return MATRIX_COLS;
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}
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static void get_key_ready(void) {
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DDRB &= ~(1<<3);
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PORTB |= (1<<3);
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_delay_us(5);
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}
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inline void select_key_ready(void) {
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DDRB |= (1<<3);
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}
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void matrix_init(void)
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{
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init_cols();
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}
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uint8_t matrix_scan(void)
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{
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uint16_t time_check = timer_read();
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if (matrix_scan_timestamp == time_check) return 1;
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matrix_scan_timestamp = time_check;
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select_next_key(0);
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uint8_t *debounce = &matrix_debouncing[0][0];
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for (uint8_t row=0; row<matrix_rows(); row++) {
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for (uint8_t col=0; col<matrix_cols(); col++, *debounce++) {
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uint8_t real_col = col/2;
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if (col & 1) real_col += 8;
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uint8_t key = get_key(real_col);
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if (real_col >= 8) select_next_key(1);
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*debounce = (*debounce >> 1) | key;
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if ((*debounce > 0) && (*debounce < 255)) {
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matrix_row_t *p_row = &matrix[row];
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matrix_row_t col_mask = ((matrix_row_t)1 << real_col);
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if (*debounce >= DEBOUNCE_DN_MASK) {
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*p_row |= col_mask;
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} else if (*debounce <= DEBOUNCE_UP_MASK) {
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*p_row &= ~col_mask;
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}
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}
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}
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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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inline
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bool matrix_is_on(uint8_t row, uint8_t col)
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{
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return (matrix[row] & ((matrix_row_t)1<<col));
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}
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inline
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matrix_row_t matrix_get_row(uint8_t row)
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{
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return matrix[row];
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}
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void matrix_print(void)
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{
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print("\nr/c 0123456789ABCDEF\n");
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for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
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print_hex8(row); print(": ");
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print_bin_reverse16(matrix_get_row(row));
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print("\n");
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}
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}
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uint8_t matrix_key_count(void)
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{
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uint8_t count = 0;
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for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
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count += bitpop16(matrix[i]);
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}
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return count;
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}
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void init_cols(void)
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{
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//595 pin
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DDRB |= (1<<3 | 1<<1);
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DDRB &= ~(1<<2);
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PORTB |= (1<<3 | 1<<2 | 1<<1);
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}
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static uint8_t get_key(uint8_t col) {
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if (col<8) return PINB&(1<<3) ? 0 : 0x80;
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else return PINB&(1<<2) ? 0 : 0x80;
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}
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void unselect_rows(void)
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{
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}
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static void select_next_key(uint8_t mode)
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{
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select_key_ready();
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if (mode == 0) {
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DS_PL_HI();
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for (uint8_t i = 0; i < 40; i++) {
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CLOCK_PULSE();
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}
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DS_PL_LO();
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CLOCK_PULSE();
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} else {
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DS_PL_HI();
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CLOCK_PULSE();
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}
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get_key_ready();
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}
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