3 Note for ErgoDox EZ customizers: Here be dragons!
4 This is not a file you want to be messing with.
5 All of the interesting stuff for you is under keymaps/ :)
8 Copyright 2013 Oleg Kostyuk <cub.uanic@gmail.com>
10 This program is free software: you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation, either version 2 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>.
30 #include <util/delay.h>
31 #include "action_layer.h"
36 #include "ergodox_ez.h"
37 #include "i2cmaster.h"
38 #ifdef DEBUG_MATRIX_SCAN_RATE
45 static uint8_t debouncing = DEBOUNCE;
47 /* matrix state(1:on, 0:off) */
48 static matrix_row_t matrix[MATRIX_ROWS];
49 static matrix_row_t matrix_debouncing[MATRIX_ROWS];
51 static matrix_row_t read_cols(uint8_t row);
52 static void init_cols(void);
53 static void unselect_rows();
54 static void select_row(uint8_t row);
56 static uint8_t mcp23018_reset_loop;
58 #ifdef DEBUG_MATRIX_SCAN_RATE
59 uint32_t matrix_timer;
60 uint32_t matrix_scan_count;
64 __attribute__ ((weak))
65 void * matrix_init_kb(void) {
68 __attribute__ ((weak))
69 void * matrix_scan_kb(void) {
73 uint8_t matrix_rows(void)
79 uint8_t matrix_cols(void)
84 void matrix_init(void)
86 // initialize row and col
88 mcp23018_status = init_mcp23018();
94 // initialize matrix state: all keys off
95 for (uint8_t i=0; i < MATRIX_ROWS; i++) {
97 matrix_debouncing[i] = 0;
100 #ifdef DEBUG_MATRIX_SCAN_RATE
101 matrix_timer = timer_read32();
102 matrix_scan_count = 0;
105 if (matrix_init_kb) {
111 uint8_t matrix_scan(void)
113 if (mcp23018_status) { // if there was an error
114 if (++mcp23018_reset_loop == 0) {
115 // since mcp23018_reset_loop is 8 bit - we'll try to reset once in 255 matrix scans
116 // this will be approx bit more frequent than once per second
117 print("trying to reset mcp23018\n");
118 mcp23018_status = init_mcp23018();
119 if (mcp23018_status) {
120 print("left side not responding\n");
122 print("left side attached\n");
123 ergodox_blink_all_leds();
128 #ifdef DEBUG_MATRIX_SCAN_RATE
131 uint32_t timer_now = timer_read32();
132 if (TIMER_DIFF_32(timer_now, matrix_timer)>1000) {
133 print("matrix scan frequency: ");
134 pdec(matrix_scan_count);
137 matrix_timer = timer_now;
138 matrix_scan_count = 0;
142 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
144 matrix_row_t cols = read_cols(i);
145 if (matrix_debouncing[i] != cols) {
146 matrix_debouncing[i] = cols;
148 debug("bounce!: "); debug_hex(debouncing); debug("\n");
150 debouncing = DEBOUNCE;
159 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
160 matrix[i] = matrix_debouncing[i];
166 if (matrix_scan_kb) {
173 bool matrix_is_modified(void)
175 if (debouncing) return false;
180 bool matrix_is_on(uint8_t row, uint8_t col)
182 return (matrix[row] & ((matrix_row_t)1<<col));
186 matrix_row_t matrix_get_row(uint8_t row)
191 void matrix_print(void)
193 print("\nr/c 0123456789ABCDEF\n");
194 for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
195 phex(row); print(": ");
196 pbin_reverse16(matrix_get_row(row));
201 uint8_t matrix_key_count(void)
204 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
205 count += bitpop16(matrix[i]);
210 /* Column pin configuration
214 * pin: F0 F1 F4 F5 F6 F7
218 * pin: B5 B4 B3 B2 B1 B0
220 static void init_cols(void)
223 // not needed, already done as part of init_mcp23018()
226 // Input with pull-up(DDR:0, PORT:1)
227 DDRF &= ~(1<<7 | 1<<6 | 1<<5 | 1<<4 | 1<<1 | 1<<0);
228 PORTF |= (1<<7 | 1<<6 | 1<<5 | 1<<4 | 1<<1 | 1<<0);
231 static matrix_row_t read_cols(uint8_t row)
234 if (mcp23018_status) { // if there was an error
238 mcp23018_status = i2c_start(I2C_ADDR_WRITE); if (mcp23018_status) goto out;
239 mcp23018_status = i2c_write(GPIOB); if (mcp23018_status) goto out;
240 mcp23018_status = i2c_start(I2C_ADDR_READ); if (mcp23018_status) goto out;
241 data = i2c_readNak();
248 _delay_us(30); // without this wait read unstable value.
251 (PINF&(1<<0) ? 0 : (1<<0)) |
252 (PINF&(1<<1) ? 0 : (1<<1)) |
253 (PINF&(1<<4) ? 0 : (1<<2)) |
254 (PINF&(1<<5) ? 0 : (1<<3)) |
255 (PINF&(1<<6) ? 0 : (1<<4)) |
256 (PINF&(1<<7) ? 0 : (1<<5)) ;
260 /* Row pin configuration
263 * row: 7 8 9 10 11 12 13
264 * pin: B0 B1 B2 B3 D2 D3 C6
268 * pin: A0 A1 A2 A3 A4 A5 A6
270 static void unselect_rows(void)
272 // unselect on mcp23018
273 if (mcp23018_status) { // if there was an error
276 // set all rows hi-Z : 1
277 mcp23018_status = i2c_start(I2C_ADDR_WRITE); if (mcp23018_status) goto out;
278 mcp23018_status = i2c_write(GPIOA); if (mcp23018_status) goto out;
279 mcp23018_status = i2c_write( 0xFF
281 ); if (mcp23018_status) goto out;
286 // unselect on teensy
287 // Hi-Z(DDR:0, PORT:0) to unselect
288 DDRB &= ~(1<<0 | 1<<1 | 1<<2 | 1<<3);
289 PORTB &= ~(1<<0 | 1<<1 | 1<<2 | 1<<3);
290 DDRD &= ~(1<<2 | 1<<3);
291 PORTD &= ~(1<<2 | 1<<3);
296 static void select_row(uint8_t row)
299 // select on mcp23018
300 if (mcp23018_status) { // if there was an error
303 // set active row low : 0
304 // set other rows hi-Z : 1
305 mcp23018_status = i2c_start(I2C_ADDR_WRITE); if (mcp23018_status) goto out;
306 mcp23018_status = i2c_write(GPIOA); if (mcp23018_status) goto out;
307 mcp23018_status = i2c_write( 0xFF & ~(1<<row)
309 ); if (mcp23018_status) goto out;
315 // Output low(DDR:1, PORT:0) to select