mirror of
https://github.com/Keychron/qmk_firmware.git
synced 2024-12-11 12:45:33 +06:00
222 lines
5.5 KiB
C
222 lines
5.5 KiB
C
/*
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Copyright 2014 Ralf Schmitt <ralf@bunkertor.net>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdint.h>
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#include <stdbool.h>
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#include <avr/io.h>
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#include <util/delay.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 "matrix.h"
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#include "backlight.h"
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#ifndef DEBOUNCE
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# define DEBOUNCE 5
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#endif
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static uint8_t debouncing = DEBOUNCE;
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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_ROWS];
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static uint16_t read_inputs(void);
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static void init_inputs(void);
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static void init_outputs(void);
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static void reset_inputs(void);
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static void reset_outputs(void);
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static void select_output(uint8_t col);
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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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void matrix_init(void)
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{
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backlight_init_ports();
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init_inputs();
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init_outputs();
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for (uint8_t i=0; i < MATRIX_ROWS; i++) {
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matrix[i] = 0;
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matrix_debouncing[i] = 0;
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}
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}
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uint8_t matrix_scan(void)
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{
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for (uint8_t col = 0; col < MATRIX_COLS; col++) {
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reset_inputs();
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reset_outputs();
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select_output(col);
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_delay_us(3);
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uint16_t rows = read_inputs();
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for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
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bool prev_bit = matrix_debouncing[row] & ((matrix_row_t)1<<col);
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bool curr_bit = rows & (1<<row);
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if (prev_bit != curr_bit) {
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matrix_debouncing[row] ^= ((matrix_row_t)1<<col);
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if (debouncing) {
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dprint("bounce!: "); dprintf("%02X", debouncing); dprintln();
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}
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debouncing = DEBOUNCE;
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}
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}
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}
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if (debouncing) {
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if (--debouncing) {
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_delay_ms(1);
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} else {
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for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
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matrix[i] = matrix_debouncing[i];
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}
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}
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}
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return 1;
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}
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bool matrix_is_modified(void)
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{
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if (debouncing) return false;
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return true;
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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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phex(row); print(": ");
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pbin_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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static void init_inputs(void)
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{
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DDRE &= ~0b01000000; // PE6 (Col 0)
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DDRB &= ~0b00001111; // PB0 (Col 1), PB1 (Col 2), PB2 (Col 3), PB3 (Col 4)
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DDRF &= ~0b00000001; // PF0 (Col 5)
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DDRD &= ~0b00100011; // PD0 (Col 6), PD1 (Col 8 TKL), PD5 (Col 7)
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}
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static uint16_t read_inputs(void)
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{
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return (PINE&(1<<6) ? 0 : (1<<0)) | // PE6 (Col 0)
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(PINB&(1<<0) ? 0 : (1<<1)) | // PB0 (Col 1)
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(PINB&(1<<1) ? 0 : (1<<2)) | // PB1 (Col 2)
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(PINB&(1<<2) ? 0 : (1<<3)) | // PB2 (Col 3)
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(PINB&(1<<3) ? 0 : (1<<4)) | // PB3 (Col 4)
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(PINF&(1<<0) ? 0 : (1<<5)) | // PF0 (Col 5)
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(PIND&(1<<0) ? 0 : (1<<6)) | // PD0 (Col 6)
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(PIND&(1<<5) ? 0 : (1<<7)) | // PD5 (Col 7)
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(PIND&(1<<1) ? 0 : (1<<8)); // PD1 (Col 8 TKL)
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}
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static void reset_inputs(void)
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{
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PORTE |= 0b01000000; // PE6 (Col 0)
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PORTB |= 0b00001111; // PB0 (Col 1), PB1 (Col 2), PB2 (Col 3), PB3 (Col 4)
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PORTF |= 0b00000001; // PF0 (Col 5)
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PORTD |= 0b00100011; // PD0 (Col 6), PD1 (Col 8 TKL), PD5 (Col 7)
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}
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static void init_outputs(void)
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{
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DDRB |= 0b00010000; // PB4 (Row 0)
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DDRE |= 0b00000100; // PE2 (Row 1)
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DDRF |= 0b11110010; // PF4 (Row 2), PF7 (Row 3), PF1 (Row 4), PF6 (Row 5), PF5 (Row 7)
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DDRC |= 0b11000000; // PC6 (Row 6), PC7 (Row 9)
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DDRD |= 0b10000000; // PD7 (Row 8)
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}
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static void reset_outputs(void)
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{
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PORTB |= 0b00010000; // PB4 (Row 0)
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PORTE |= 0b00000100; // PE2 (Row 1)
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PORTF |= 0b11110010; // PF4 (Row 2), PF7 (Row 3), PF1 (Row 4), PF6 (Row 5), PF5 (Row 7)
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PORTC |= 0b11000000; // PC6 (Row 6), PC7 (Row 9)
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PORTD |= 0b10000000; // PD7 (Row 8)
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}
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static void select_output(uint8_t col)
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{
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switch (col) {
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case 0:
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PORTB &= ~(1<<4);
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break;
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case 1:
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PORTE &= ~(1<<2);
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break;
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case 2:
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PORTF &= ~(1<<4);
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break;
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case 3:
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PORTF &= ~(1<<7);
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break;
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case 4:
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PORTF &= ~(1<<1);
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break;
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case 5:
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PORTF &= ~(1<<6);
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break;
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case 6:
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PORTC &= ~(1<<6);
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break;
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case 7:
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PORTF &= ~(1<<5);
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break;
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case 8:
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PORTD &= ~(1<<7);
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break;
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case 9:
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PORTC &= ~(1<<7);
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break;
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}
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}
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