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/>.
29 #include "split_util.h"
30 #include "pro_micro.h"
40 #ifndef DEBOUNCING_DELAY
41 # define DEBOUNCING_DELAY 5
44 #if (DEBOUNCING_DELAY > 0)
45 static uint16_t debouncing_time;
46 static bool debouncing = false;
49 #if (MATRIX_COLS <= 8)
50 # define print_matrix_header() print("\nr/c 01234567\n")
51 # define print_matrix_row(row) print_bin_reverse8(matrix_get_row(row))
52 # define matrix_bitpop(i) bitpop(matrix[i])
53 # define ROW_SHIFTER ((uint8_t)1)
55 # error "Currently only supports 8 COLS"
57 static matrix_row_t matrix_debouncing[MATRIX_ROWS];
59 #define ERROR_DISCONNECT_COUNT 5
61 #define ROWS_PER_HAND (MATRIX_ROWS/2)
63 static uint8_t error_count = 0;
65 static const uint8_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
66 static const uint8_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
68 /* matrix state(1:on, 0:off) */
69 static matrix_row_t matrix[MATRIX_ROWS];
70 static matrix_row_t matrix_debouncing[MATRIX_ROWS];
72 #if (DIODE_DIRECTION == COL2ROW)
73 static void init_cols(void);
74 static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row);
75 static void unselect_rows(void);
76 static void select_row(uint8_t row);
77 static void unselect_row(uint8_t row);
78 #elif (DIODE_DIRECTION == ROW2COL)
79 static void init_rows(void);
80 static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col);
81 static void unselect_cols(void);
82 static void unselect_col(uint8_t col);
83 static void select_col(uint8_t col);
85 __attribute__ ((weak))
86 void matrix_init_quantum(void) {
90 __attribute__ ((weak))
91 void matrix_scan_quantum(void) {
95 __attribute__ ((weak))
96 void matrix_init_kb(void) {
100 __attribute__ ((weak))
101 void matrix_scan_kb(void) {
105 __attribute__ ((weak))
106 void matrix_init_user(void) {
109 __attribute__ ((weak))
110 void matrix_scan_user(void) {
114 uint8_t matrix_rows(void)
120 uint8_t matrix_cols(void)
125 void matrix_init(void)
130 // initialize row and col
131 #if (DIODE_DIRECTION == COL2ROW)
134 #elif (DIODE_DIRECTION == ROW2COL)
141 // initialize matrix state: all keys off
142 for (uint8_t i=0; i < MATRIX_ROWS; i++) {
144 matrix_debouncing[i] = 0;
147 matrix_init_quantum();
151 uint8_t _matrix_scan(void)
153 int offset = isLeftHand ? 0 : (ROWS_PER_HAND);
154 #if (DIODE_DIRECTION == COL2ROW)
155 // Set row, read cols
156 for (uint8_t current_row = 0; current_row < ROWS_PER_HAND; current_row++) {
157 # if (DEBOUNCING_DELAY > 0)
158 bool matrix_changed = read_cols_on_row(matrix_debouncing+offset, current_row);
160 if (matrix_changed) {
162 debouncing_time = timer_read();
167 read_cols_on_row(matrix+offset, current_row);
172 #elif (DIODE_DIRECTION == ROW2COL)
173 // Set col, read rows
174 for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
175 # if (DEBOUNCING_DELAY > 0)
176 bool matrix_changed = read_rows_on_col(matrix_debouncing+offset, current_col);
177 if (matrix_changed) {
179 debouncing_time = timer_read();
182 read_rows_on_col(matrix+offset, current_col);
188 # if (DEBOUNCING_DELAY > 0)
189 if (debouncing && (timer_elapsed(debouncing_time) > DEBOUNCING_DELAY)) {
190 for (uint8_t i = 0; i < ROWS_PER_HAND; i++) {
191 matrix[i+offset] = matrix_debouncing[i+offset];
202 // Get rows from other half over i2c
203 int i2c_transaction(void) {
204 int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
206 int err = i2c_master_start(SLAVE_I2C_ADDRESS + I2C_WRITE);
207 if (err) goto i2c_error;
209 // start of matrix stored at 0x00
210 err = i2c_master_write(0x00);
211 if (err) goto i2c_error;
214 err = i2c_master_start(SLAVE_I2C_ADDRESS + I2C_READ);
215 if (err) goto i2c_error;
219 for (i = 0; i < ROWS_PER_HAND-1; ++i) {
220 matrix[slaveOffset+i] = i2c_master_read(I2C_ACK);
222 matrix[slaveOffset+i] = i2c_master_read(I2C_NACK);
225 i2c_error: // the cable is disconnceted, or something else went wrong
235 int serial_transaction(void) {
236 int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
238 if (serial_update_buffers()) {
242 for (int i = 0; i < ROWS_PER_HAND; ++i) {
243 matrix[slaveOffset+i] = serial_slave_buffer[i];
249 uint8_t matrix_scan(void)
251 uint8_t ret = _matrix_scan();
254 if( i2c_transaction() ) {
256 if( serial_transaction() ) {
258 // turn on the indicator led when halves are disconnected
263 if (error_count > ERROR_DISCONNECT_COUNT) {
264 // reset other half if disconnected
265 int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
266 for (int i = 0; i < ROWS_PER_HAND; ++i) {
267 matrix[slaveOffset+i] = 0;
271 // turn off the indicator led on no error
275 matrix_scan_quantum();
279 void matrix_slave_scan(void) {
282 int offset = (isLeftHand) ? 0 : ROWS_PER_HAND;
285 for (int i = 0; i < ROWS_PER_HAND; ++i) {
286 i2c_slave_buffer[i] = matrix[offset+i];
289 for (int i = 0; i < ROWS_PER_HAND; ++i) {
290 serial_slave_buffer[i] = matrix[offset+i];
295 bool matrix_is_modified(void)
297 if (debouncing) return false;
302 bool matrix_is_on(uint8_t row, uint8_t col)
304 return (matrix[row] & ((matrix_row_t)1<<col));
308 matrix_row_t matrix_get_row(uint8_t row)
313 void matrix_print(void)
315 print("\nr/c 0123456789ABCDEF\n");
316 for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
317 phex(row); print(": ");
318 pbin_reverse16(matrix_get_row(row));
323 uint8_t matrix_key_count(void)
326 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
327 count += bitpop16(matrix[i]);
332 #if (DIODE_DIRECTION == COL2ROW)
334 static void init_cols(void)
336 for(uint8_t x = 0; x < MATRIX_COLS; x++) {
337 uint8_t pin = col_pins[x];
338 _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
339 _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
343 static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row)
345 // Store last value of row prior to reading
346 matrix_row_t last_row_value = current_matrix[current_row];
348 // Clear data in matrix row
349 current_matrix[current_row] = 0;
351 // Select row and wait for row selecton to stabilize
352 select_row(current_row);
356 for(uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
358 // Select the col pin to read (active low)
359 uint8_t pin = col_pins[col_index];
360 uint8_t pin_state = (_SFR_IO8(pin >> 4) & _BV(pin & 0xF));
362 // Populate the matrix row with the state of the col pin
363 current_matrix[current_row] |= pin_state ? 0 : (ROW_SHIFTER << col_index);
367 unselect_row(current_row);
369 return (last_row_value != current_matrix[current_row]);
372 static void select_row(uint8_t row)
374 uint8_t pin = row_pins[row];
375 _SFR_IO8((pin >> 4) + 1) |= _BV(pin & 0xF); // OUT
376 _SFR_IO8((pin >> 4) + 2) &= ~_BV(pin & 0xF); // LOW
379 static void unselect_row(uint8_t row)
381 uint8_t pin = row_pins[row];
382 _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
383 _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
386 static void unselect_rows(void)
388 for(uint8_t x = 0; x < ROWS_PER_HAND; x++) {
389 uint8_t pin = row_pins[x];
390 _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
391 _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
395 #elif (DIODE_DIRECTION == ROW2COL)
397 static void init_rows(void)
399 for(uint8_t x = 0; x < ROWS_PER_HAND; x++) {
400 uint8_t pin = row_pins[x];
401 _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
402 _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
406 static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col)
408 bool matrix_changed = false;
410 // Select col and wait for col selecton to stabilize
411 select_col(current_col);
415 for(uint8_t row_index = 0; row_index < ROWS_PER_HAND; row_index++)
418 // Store last value of row prior to reading
419 matrix_row_t last_row_value = current_matrix[row_index];
421 // Check row pin state
422 if ((_SFR_IO8(row_pins[row_index] >> 4) & _BV(row_pins[row_index] & 0xF)) == 0)
424 // Pin LO, set col bit
425 current_matrix[row_index] |= (ROW_SHIFTER << current_col);
429 // Pin HI, clear col bit
430 current_matrix[row_index] &= ~(ROW_SHIFTER << current_col);
433 // Determine if the matrix changed state
434 if ((last_row_value != current_matrix[row_index]) && !(matrix_changed))
436 matrix_changed = true;
441 unselect_col(current_col);
443 return matrix_changed;
446 static void select_col(uint8_t col)
448 uint8_t pin = col_pins[col];
449 _SFR_IO8((pin >> 4) + 1) |= _BV(pin & 0xF); // OUT
450 _SFR_IO8((pin >> 4) + 2) &= ~_BV(pin & 0xF); // LOW
453 static void unselect_col(uint8_t col)
455 uint8_t pin = col_pins[col];
456 _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
457 _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
460 static void unselect_cols(void)
462 for(uint8_t x = 0; x < MATRIX_COLS; x++) {
463 uint8_t pin = col_pins[x];
464 _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
465 _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI