/* Copyright 2016 Ralf Schmitt This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . */ #include #include #include #include #include "print.h" #include "debug.h" #include "util.h" #include "matrix.h" static uint8_t debouncing = DEBOUNCING_DELAY; /* matrix state(1:on, 0:off) */ static matrix_row_t matrix[MATRIX_ROWS]; static matrix_row_t matrix_debouncing[MATRIX_ROWS]; static uint8_t read_rows(uint8_t col); static void init_ports(void); static void unselect_cols(void); static void select_col(uint8_t col); __attribute__ ((weak)) void matrix_init_kb(void) { matrix_init_user(); } __attribute__ ((weak)) void matrix_scan_kb(void) { matrix_scan_user(); } __attribute__ ((weak)) void matrix_init_user(void) { } __attribute__ ((weak)) void matrix_scan_user(void) { } inline uint8_t matrix_rows(void) { return MATRIX_ROWS; } inline uint8_t matrix_cols(void) { return MATRIX_COLS; } void backlight_init_ports(void) { DDRD |= 0b01010000; PORTD &= 0b10101111; DDRB |= 0b00001110; PORTB &= 0b11110001; DDRE |= 0b01000000; PORTE &= 0b10111111; } void matrix_init(void) { backlight_init_ports(); unselect_cols(); init_ports(); for (uint8_t i=0; i < MATRIX_ROWS; i++) { matrix[i] = 0; matrix_debouncing[i] = 0; } } uint8_t matrix_scan(void) { for (uint8_t col = 0; col < MATRIX_COLS; col++) { select_col(col); _delay_us(3); uint8_t rows = read_rows(col); for (uint8_t row = 0; row < MATRIX_ROWS; row++) { bool prev_bit = matrix_debouncing[row] & ((matrix_row_t)1<