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);
86 __attribute__ ((weak))
87 void matrix_init_kb(void) {
91 __attribute__ ((weak))
92 void matrix_scan_kb(void) {
96 __attribute__ ((weak))
97 void matrix_init_user(void) {
100 __attribute__ ((weak))
101 void matrix_scan_user(void) {
105 uint8_t matrix_rows(void)
111 uint8_t matrix_cols(void)
116 void matrix_init(void)
119 // JTAG disable for PORT F. write JTD bit twice within four cycles.
127 // initialize row and col
128 #if (DIODE_DIRECTION == COL2ROW)
131 #elif (DIODE_DIRECTION == ROW2COL)
138 // initialize matrix state: all keys off
139 for (uint8_t i=0; i < MATRIX_ROWS; i++) {
141 matrix_debouncing[i] = 0;
144 matrix_init_quantum();
148 uint8_t _matrix_scan(void)
150 int offset = isLeftHand ? 0 : (ROWS_PER_HAND);
151 #if (DIODE_DIRECTION == COL2ROW)
152 // Set row, read cols
153 for (uint8_t current_row = 0; current_row < ROWS_PER_HAND; current_row++) {
154 # if (DEBOUNCING_DELAY > 0)
155 bool matrix_changed = read_cols_on_row(matrix_debouncing+offset, current_row);
157 if (matrix_changed) {
159 debouncing_time = timer_read();
164 read_cols_on_row(matrix+offset, current_row);
169 #elif (DIODE_DIRECTION == ROW2COL)
170 // Set col, read rows
171 for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
172 # if (DEBOUNCING_DELAY > 0)
173 bool matrix_changed = read_rows_on_col(matrix_debouncing+offset, current_col);
174 if (matrix_changed) {
176 debouncing_time = timer_read();
179 read_rows_on_col(matrix+offset, current_col);
185 # if (DEBOUNCING_DELAY > 0)
186 if (debouncing && (timer_elapsed(debouncing_time) > DEBOUNCING_DELAY)) {
187 for (uint8_t i = 0; i < ROWS_PER_HAND; i++) {
188 matrix[i+offset] = matrix_debouncing[i+offset];
199 // Get rows from other half over i2c
200 int i2c_transaction(void) {
201 int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
203 int err = i2c_master_start(SLAVE_I2C_ADDRESS + I2C_WRITE);
204 if (err) goto i2c_error;
206 // start of matrix stored at 0x00
207 err = i2c_master_write(0x00);
208 if (err) goto i2c_error;
211 err = i2c_master_start(SLAVE_I2C_ADDRESS + I2C_READ);
212 if (err) goto i2c_error;
216 for (i = 0; i < ROWS_PER_HAND-1; ++i) {
217 matrix[slaveOffset+i] = i2c_master_read(I2C_ACK);
219 matrix[slaveOffset+i] = i2c_master_read(I2C_NACK);
222 i2c_error: // the cable is disconnceted, or something else went wrong
232 int serial_transaction(void) {
233 int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
235 if (serial_update_buffers()) {
239 for (int i = 0; i < ROWS_PER_HAND; ++i) {
240 matrix[slaveOffset+i] = serial_slave_buffer[i];
246 uint8_t matrix_scan(void)
248 uint8_t ret = _matrix_scan();
251 if( i2c_transaction() ) {
253 if( serial_transaction() ) {
255 // turn on the indicator led when halves are disconnected
260 if (error_count > ERROR_DISCONNECT_COUNT) {
261 // reset other half if disconnected
262 int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
263 for (int i = 0; i < ROWS_PER_HAND; ++i) {
264 matrix[slaveOffset+i] = 0;
268 // turn off the indicator led on no error
272 matrix_scan_quantum();
276 void matrix_slave_scan(void) {
279 int offset = (isLeftHand) ? 0 : ROWS_PER_HAND;
282 for (int i = 0; i < ROWS_PER_HAND; ++i) {
283 i2c_slave_buffer[i] = matrix[offset+i];
286 for (int i = 0; i < ROWS_PER_HAND; ++i) {
287 serial_slave_buffer[i] = matrix[offset+i];
292 bool matrix_is_modified(void)
294 if (debouncing) return false;
299 bool matrix_is_on(uint8_t row, uint8_t col)
301 return (matrix[row] & ((matrix_row_t)1<<col));
305 matrix_row_t matrix_get_row(uint8_t row)
310 void matrix_print(void)
312 print("\nr/c 0123456789ABCDEF\n");
313 for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
314 phex(row); print(": ");
315 pbin_reverse16(matrix_get_row(row));
320 uint8_t matrix_key_count(void)
323 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
324 count += bitpop16(matrix[i]);
329 #if (DIODE_DIRECTION == COL2ROW)
331 static void init_cols(void)
333 for(uint8_t x = 0; x < MATRIX_COLS; x++) {
334 uint8_t pin = col_pins[x];
335 _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
336 _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
340 static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row)
342 // Store last value of row prior to reading
343 matrix_row_t last_row_value = current_matrix[current_row];
345 // Clear data in matrix row
346 current_matrix[current_row] = 0;
348 // Select row and wait for row selecton to stabilize
349 select_row(current_row);
353 for(uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
355 // Select the col pin to read (active low)
356 uint8_t pin = col_pins[col_index];
357 uint8_t pin_state = (_SFR_IO8(pin >> 4) & _BV(pin & 0xF));
359 // Populate the matrix row with the state of the col pin
360 current_matrix[current_row] |= pin_state ? 0 : (ROW_SHIFTER << col_index);
364 unselect_row(current_row);
366 return (last_row_value != current_matrix[current_row]);
369 static void select_row(uint8_t row)
371 uint8_t pin = row_pins[row];
372 _SFR_IO8((pin >> 4) + 1) |= _BV(pin & 0xF); // OUT
373 _SFR_IO8((pin >> 4) + 2) &= ~_BV(pin & 0xF); // LOW
376 static void unselect_row(uint8_t row)
378 uint8_t pin = row_pins[row];
379 _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
380 _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
383 static void unselect_rows(void)
385 for(uint8_t x = 0; x < ROWS_PER_HAND; x++) {
386 uint8_t pin = row_pins[x];
387 _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
388 _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
392 #elif (DIODE_DIRECTION == ROW2COL)
394 static void init_rows(void)
396 for(uint8_t x = 0; x < ROWS_PER_HAND; x++) {
397 uint8_t pin = row_pins[x];
398 _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
399 _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
403 static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col)
405 bool matrix_changed = false;
407 // Select col and wait for col selecton to stabilize
408 select_col(current_col);
412 for(uint8_t row_index = 0; row_index < ROWS_PER_HAND; row_index++)
415 // Store last value of row prior to reading
416 matrix_row_t last_row_value = current_matrix[row_index];
418 // Check row pin state
419 if ((_SFR_IO8(row_pins[row_index] >> 4) & _BV(row_pins[row_index] & 0xF)) == 0)
421 // Pin LO, set col bit
422 current_matrix[row_index] |= (ROW_SHIFTER << current_col);
426 // Pin HI, clear col bit
427 current_matrix[row_index] &= ~(ROW_SHIFTER << current_col);
430 // Determine if the matrix changed state
431 if ((last_row_value != current_matrix[row_index]) && !(matrix_changed))
433 matrix_changed = true;
438 unselect_col(current_col);
440 return matrix_changed;
443 static void select_col(uint8_t col)
445 uint8_t pin = col_pins[col];
446 _SFR_IO8((pin >> 4) + 1) |= _BV(pin & 0xF); // OUT
447 _SFR_IO8((pin >> 4) + 2) &= ~_BV(pin & 0xF); // LOW
450 static void unselect_col(uint8_t col)
452 uint8_t pin = col_pins[col];
453 _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
454 _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
457 static void unselect_cols(void)
459 for(uint8_t x = 0; x < MATRIX_COLS; x++) {
460 uint8_t pin = col_pins[x];
461 _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
462 _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI