2 Copyright 2012 Jun Wako <wakojun@gmail.com>
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation, either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>.
24 #include <util/delay.h>
25 #include "action_layer.h"
35 static uint8_t debouncing = DEBOUNCE;
37 /* matrix state(1:on, 0:off) */
38 static matrix_row_t matrix[MATRIX_ROWS];
39 static matrix_row_t matrix_debouncing[MATRIX_ROWS];
41 static matrix_row_t read_cols(void);
42 static void init_cols(void);
43 static void unselect_rows(void);
44 static void select_row(uint8_t row);
48 uint8_t matrix_rows(void)
54 uint8_t matrix_cols(void)
60 void matrix_init(void)
62 // To use PORTF disable JTAG with writing JTD bit twice within four cycles.
66 backlight_init_ports();
72 // initialize row and col
76 // initialize matrix state: all keys off
77 for (uint8_t i=0; i < MATRIX_ROWS; i++) {
79 matrix_debouncing[i] = 0;
83 uint8_t matrix_scan(void)
85 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
87 _delay_us(30); // without this wait read unstable value.
88 matrix_row_t cols = read_cols();
89 if (matrix_debouncing[i] != cols) {
90 matrix_debouncing[i] = cols;
92 debug("bounce!: "); debug_hex(debouncing); debug("\n");
94 debouncing = DEBOUNCE;
103 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
104 matrix[i] = matrix_debouncing[i];
113 bool matrix_is_modified(void)
115 if (debouncing) return false;
120 bool matrix_is_on(uint8_t row, uint8_t col)
122 return (matrix[row] & ((matrix_row_t)1<<col));
126 matrix_row_t matrix_get_row(uint8_t row)
131 void matrix_print(void)
133 print("\nr/c 0123456789ABCDEF\n");
134 for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
135 phex(row); print(": ");
136 pbin_reverse16(matrix_get_row(row));
141 uint8_t matrix_key_count(void)
144 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
145 count += bitpop16(matrix[i]);
151 // Atomic PCB Rev 0 Pin Assignments
153 // Column: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14
154 // Pin: F1, F0, B0, C7, F4, F5, F6, F7, D4, D6, B4, D7, D3, D2, D1
157 static void init_cols(void)
159 DDRB &= ~(1<<4 | 1<<0);
160 PORTB |= (1<<4 | 1<<0);
163 DDRD &= ~(1<<7 | 1<<6 | 1<<4 | 1<<3 | 1<<2 | 1<<1);
164 PORTD |= (1<<7 | 1<<6 | 1<<4 | 1<<3 | 1<<2 | 1<<1);
165 DDRF &= ~(1<<0 | 1<<1 | 1<<4 | 1<<5 | 1<<6 | 1<<7);
166 PORTF |= (1<<0 | 1<<1 | 1<<4 | 1<<5 | 1<<6 | 1<<7);
169 static matrix_row_t read_cols(void)
171 return (PINF&(1<<1) ? 0 : (1<<0)) |
172 (PINF&(1<<0) ? 0 : (1<<1)) |
173 (PINB&(1<<0) ? 0 : (1<<2)) |
174 (PINC&(1<<7) ? 0 : (1<<3)) |
175 (PINF&(1<<4) ? 0 : (1<<4)) |
176 (PINF&(1<<5) ? 0 : (1<<5)) |
177 (PINF&(1<<6) ? 0 : (1<<6)) |
178 (PINF&(1<<7) ? 0 : (1<<7)) |
179 (PIND&(1<<4) ? 0 : (1<<8)) |
180 (PIND&(1<<6) ? 0 : (1<<9)) |
181 (PINB&(1<<4) ? 0 : (1<<10)) |
182 (PIND&(1<<7) ? 0 : (1<<11)) |
183 (PIND&(1<<3) ? 0 : (1<<12)) |
184 (PIND&(1<<2) ? 0 : (1<<13)) |
185 (PIND&(1<<1) ? 0 : (1<<14));
190 // Atomic PCB Rev 0 Pin Assignments
192 // Row: 0, 1, 2, 3, 4
193 // Pin: D0, D5, B5, B6, C6
196 static void unselect_rows(void)
198 DDRB &= ~(1<<5 | 1<<6);
199 PORTB |= (1<<5 | 1<<6);
200 DDRD &= ~(1<<0 | 1<<5);
201 PORTD |= (1<<0 | 1<<5);
206 static void select_row(uint8_t row)