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/>.
25 #include <avr/interrupt.h>
26 #include <util/delay.h>
31 #include "split_util.h"
32 #include "pro_micro.h"
45 #define ERROR_DISCONNECT_COUNT 5
47 static uint8_t debouncing = DEBOUNCE;
48 static const int ROWS_PER_HAND = MATRIX_ROWS/2;
49 static uint8_t error_count = 0;
50 uint8_t is_master = 0 ;
52 static const uint8_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
53 static const uint8_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
55 /* matrix state(1:on, 0:off) */
56 static matrix_row_t matrix[MATRIX_ROWS];
57 static matrix_row_t matrix_debouncing[MATRIX_ROWS];
59 static matrix_row_t read_cols(void);
60 static void init_cols(void);
61 static void unselect_rows(void);
62 static void select_row(uint8_t row);
63 static uint8_t matrix_master_scan(void);
66 __attribute__ ((weak))
67 void matrix_init_kb(void) {
71 __attribute__ ((weak))
72 void matrix_scan_kb(void) {
76 __attribute__ ((weak))
77 void matrix_init_user(void) {
80 __attribute__ ((weak))
81 void matrix_scan_user(void) {
85 uint8_t matrix_rows(void)
91 uint8_t matrix_cols(void)
96 void matrix_init(void)
101 // initialize row and col
107 // initialize matrix state: all keys off
108 for (uint8_t i=0; i < MATRIX_ROWS; i++) {
110 matrix_debouncing[i] = 0;
113 is_master = has_usb();
115 matrix_init_quantum();
118 uint8_t _matrix_scan(void)
120 // Right hand is stored after the left in the matirx so, we need to offset it
121 int offset = isLeftHand ? 0 : (ROWS_PER_HAND);
123 for (uint8_t i = 0; i < ROWS_PER_HAND; i++) {
125 _delay_us(30); // without this wait read unstable value.
126 matrix_row_t cols = read_cols();
127 if (matrix_debouncing[i+offset] != cols) {
128 matrix_debouncing[i+offset] = cols;
129 debouncing = DEBOUNCE;
138 for (uint8_t i = 0; i < ROWS_PER_HAND; i++) {
139 matrix[i+offset] = matrix_debouncing[i+offset];
147 #ifdef USE_MATRIX_I2C
149 // Get rows from other half over i2c
150 int i2c_transaction(void) {
151 int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
153 int err = i2c_master_start(SLAVE_I2C_ADDRESS + I2C_WRITE);
154 if (err) goto i2c_error;
156 // start of matrix stored at 0x00
157 err = i2c_master_write(0x00);
158 if (err) goto i2c_error;
161 err = i2c_master_start(SLAVE_I2C_ADDRESS + I2C_READ);
162 if (err) goto i2c_error;
166 for (i = 0; i < ROWS_PER_HAND-1; ++i) {
167 matrix[slaveOffset+i] = i2c_master_read(I2C_ACK);
169 matrix[slaveOffset+i] = i2c_master_read(I2C_NACK);
172 i2c_error: // the cable is disconnceted, or something else went wrong
182 int serial_transaction(void) {
183 int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
184 int ret=serial_update_buffers();
190 for (int i = 0; i < ROWS_PER_HAND; ++i) {
191 matrix[slaveOffset+i] = serial_slave_buffer[i];
197 uint8_t matrix_scan(void)
200 matrix_master_scan();
204 // if(serial_slave_DATA_CORRUPT()){
206 int offset = (isLeftHand) ? ROWS_PER_HAND : 0;
208 for (int i = 0; i < ROWS_PER_HAND; ++i) {
209 matrix[offset+i] = serial_master_buffer[i];
216 matrix_scan_quantum();
222 uint8_t matrix_master_scan(void) {
224 int ret = _matrix_scan();
226 int offset = (isLeftHand) ? 0 : ROWS_PER_HAND;
228 #ifdef USE_MATRIX_I2C
229 // for (int i = 0; i < ROWS_PER_HAND; ++i) {
230 /* i2c_slave_buffer[i] = matrix[offset+i]; */
231 // i2c_slave_buffer[i] = matrix[offset+i];
234 for (int i = 0; i < ROWS_PER_HAND; ++i) {
235 serial_master_buffer[i] = matrix[offset+i];
239 #ifdef USE_MATRIX_I2C
240 if( i2c_transaction() ) {
242 if( serial_transaction() ) {
244 // turn on the indicator led when halves are disconnected
249 if (error_count > ERROR_DISCONNECT_COUNT) {
250 // reset other half if disconnected
251 int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
252 for (int i = 0; i < ROWS_PER_HAND; ++i) {
253 matrix[slaveOffset+i] = 0;
257 // turn off the indicator led on no error
261 matrix_scan_quantum();
265 void matrix_slave_scan(void) {
268 int offset = (isLeftHand) ? 0 : ROWS_PER_HAND;
270 #ifdef USE_MATRIX_I2C
271 for (int i = 0; i < ROWS_PER_HAND; ++i) {
272 /* i2c_slave_buffer[i] = matrix[offset+i]; */
273 i2c_slave_buffer[i] = matrix[offset+i];
276 for (int i = 0; i < ROWS_PER_HAND; ++i) {
277 serial_slave_buffer[i] = matrix[offset+i];
282 bool matrix_is_modified(void)
284 if (debouncing) return false;
289 bool matrix_is_on(uint8_t row, uint8_t col)
291 return (matrix[row] & ((matrix_row_t)1<<col));
295 matrix_row_t matrix_get_row(uint8_t row)
300 void matrix_print(void)
302 print("\nr/c 0123456789ABCDEF\n");
303 for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
304 phex(row); print(": ");
305 pbin_reverse16(matrix_get_row(row));
310 uint8_t matrix_key_count(void)
313 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
314 count += bitpop16(matrix[i]);
319 static void init_cols(void)
321 for(int x = 0; x < MATRIX_COLS; x++) {
322 _SFR_IO8((col_pins[x] >> 4) + 1) &= ~_BV(col_pins[x] & 0xF);
323 _SFR_IO8((col_pins[x] >> 4) + 2) |= _BV(col_pins[x] & 0xF);
327 static matrix_row_t read_cols(void)
329 matrix_row_t result = 0;
330 for(int x = 0; x < MATRIX_COLS; x++) {
331 result |= (_SFR_IO8(col_pins[x] >> 4) & _BV(col_pins[x] & 0xF)) ? 0 : (1 << x);
336 static void unselect_rows(void)
338 for(int x = 0; x < ROWS_PER_HAND; x++) {
339 _SFR_IO8((row_pins[x] >> 4) + 1) &= ~_BV(row_pins[x] & 0xF);
340 _SFR_IO8((row_pins[x] >> 4) + 2) |= _BV(row_pins[x] & 0xF);
344 static void select_row(uint8_t row)
346 _SFR_IO8((row_pins[row] >> 4) + 1) |= _BV(row_pins[row] & 0xF);
347 _SFR_IO8((row_pins[row] >> 4) + 2) &= ~_BV(row_pins[row] & 0xF);