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)
128 // JTAG disable for PORT F. write JTD bit twice within four cycles.
136 // initialize row and col
137 #if (DIODE_DIRECTION == COL2ROW)
140 #elif (DIODE_DIRECTION == ROW2COL)
147 // initialize matrix state: all keys off
148 for (uint8_t i=0; i < MATRIX_ROWS; i++) {
150 matrix_debouncing[i] = 0;
153 matrix_init_quantum();
157 uint8_t _matrix_scan(void)
159 int offset = isLeftHand ? 0 : (ROWS_PER_HAND);
160 #if (DIODE_DIRECTION == COL2ROW)
161 // Set row, read cols
162 for (uint8_t current_row = 0; current_row < ROWS_PER_HAND; current_row++) {
163 # if (DEBOUNCING_DELAY > 0)
164 bool matrix_changed = read_cols_on_row(matrix_debouncing+offset, current_row);
166 if (matrix_changed) {
168 debouncing_time = timer_read();
173 read_cols_on_row(matrix+offset, current_row);
178 #elif (DIODE_DIRECTION == ROW2COL)
179 // Set col, read rows
180 for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
181 # if (DEBOUNCING_DELAY > 0)
182 bool matrix_changed = read_rows_on_col(matrix_debouncing+offset, current_col);
183 if (matrix_changed) {
185 debouncing_time = timer_read();
188 read_rows_on_col(matrix+offset, current_col);
194 # if (DEBOUNCING_DELAY > 0)
195 if (debouncing && (timer_elapsed(debouncing_time) > DEBOUNCING_DELAY)) {
196 for (uint8_t i = 0; i < ROWS_PER_HAND; i++) {
197 matrix[i+offset] = matrix_debouncing[i+offset];
208 // Get rows from other half over i2c
209 int i2c_transaction(void) {
210 int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
212 int err = i2c_master_start(SLAVE_I2C_ADDRESS + I2C_WRITE);
213 if (err) goto i2c_error;
215 // start of matrix stored at 0x00
216 err = i2c_master_write(0x00);
217 if (err) goto i2c_error;
220 err = i2c_master_start(SLAVE_I2C_ADDRESS + I2C_READ);
221 if (err) goto i2c_error;
225 for (i = 0; i < ROWS_PER_HAND-1; ++i) {
226 matrix[slaveOffset+i] = i2c_master_read(I2C_ACK);
228 matrix[slaveOffset+i] = i2c_master_read(I2C_NACK);
231 i2c_error: // the cable is disconnceted, or something else went wrong
241 int serial_transaction(void) {
242 int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
244 if (serial_update_buffers()) {
248 for (int i = 0; i < ROWS_PER_HAND; ++i) {
249 matrix[slaveOffset+i] = serial_slave_buffer[i];
255 uint8_t matrix_scan(void)
257 uint8_t ret = _matrix_scan();
260 if( i2c_transaction() ) {
262 if( serial_transaction() ) {
264 // turn on the indicator led when halves are disconnected
269 if (error_count > ERROR_DISCONNECT_COUNT) {
270 // reset other half if disconnected
271 int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
272 for (int i = 0; i < ROWS_PER_HAND; ++i) {
273 matrix[slaveOffset+i] = 0;
277 // turn off the indicator led on no error
281 matrix_scan_quantum();
285 void matrix_slave_scan(void) {
288 int offset = (isLeftHand) ? 0 : ROWS_PER_HAND;
291 for (int i = 0; i < ROWS_PER_HAND; ++i) {
292 i2c_slave_buffer[i] = matrix[offset+i];
295 for (int i = 0; i < ROWS_PER_HAND; ++i) {
296 serial_slave_buffer[i] = matrix[offset+i];
301 bool matrix_is_modified(void)
303 if (debouncing) return false;
308 bool matrix_is_on(uint8_t row, uint8_t col)
310 return (matrix[row] & ((matrix_row_t)1<<col));
314 matrix_row_t matrix_get_row(uint8_t row)
319 void matrix_print(void)
321 print("\nr/c 0123456789ABCDEF\n");
322 for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
323 phex(row); print(": ");
324 pbin_reverse16(matrix_get_row(row));
329 uint8_t matrix_key_count(void)
332 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
333 count += bitpop16(matrix[i]);
338 #if (DIODE_DIRECTION == COL2ROW)
340 static void init_cols(void)
342 for(uint8_t x = 0; x < MATRIX_COLS; x++) {
343 uint8_t pin = col_pins[x];
344 _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
345 _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
349 static bool read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row)
351 // Store last value of row prior to reading
352 matrix_row_t last_row_value = current_matrix[current_row];
354 // Clear data in matrix row
355 current_matrix[current_row] = 0;
357 // Select row and wait for row selecton to stabilize
358 select_row(current_row);
362 for(uint8_t col_index = 0; col_index < MATRIX_COLS; col_index++) {
364 // Select the col pin to read (active low)
365 uint8_t pin = col_pins[col_index];
366 uint8_t pin_state = (_SFR_IO8(pin >> 4) & _BV(pin & 0xF));
368 // Populate the matrix row with the state of the col pin
369 current_matrix[current_row] |= pin_state ? 0 : (ROW_SHIFTER << col_index);
373 unselect_row(current_row);
375 return (last_row_value != current_matrix[current_row]);
378 static void select_row(uint8_t row)
380 uint8_t pin = row_pins[row];
381 _SFR_IO8((pin >> 4) + 1) |= _BV(pin & 0xF); // OUT
382 _SFR_IO8((pin >> 4) + 2) &= ~_BV(pin & 0xF); // LOW
385 static void unselect_row(uint8_t row)
387 uint8_t pin = row_pins[row];
388 _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
389 _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
392 static void unselect_rows(void)
394 for(uint8_t x = 0; x < ROWS_PER_HAND; x++) {
395 uint8_t pin = row_pins[x];
396 _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
397 _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
401 #elif (DIODE_DIRECTION == ROW2COL)
403 static void init_rows(void)
405 for(uint8_t x = 0; x < ROWS_PER_HAND; x++) {
406 uint8_t pin = row_pins[x];
407 _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
408 _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
412 static bool read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col)
414 bool matrix_changed = false;
416 // Select col and wait for col selecton to stabilize
417 select_col(current_col);
421 for(uint8_t row_index = 0; row_index < ROWS_PER_HAND; row_index++)
424 // Store last value of row prior to reading
425 matrix_row_t last_row_value = current_matrix[row_index];
427 // Check row pin state
428 if ((_SFR_IO8(row_pins[row_index] >> 4) & _BV(row_pins[row_index] & 0xF)) == 0)
430 // Pin LO, set col bit
431 current_matrix[row_index] |= (ROW_SHIFTER << current_col);
435 // Pin HI, clear col bit
436 current_matrix[row_index] &= ~(ROW_SHIFTER << current_col);
439 // Determine if the matrix changed state
440 if ((last_row_value != current_matrix[row_index]) && !(matrix_changed))
442 matrix_changed = true;
447 unselect_col(current_col);
449 return matrix_changed;
452 static void select_col(uint8_t col)
454 uint8_t pin = col_pins[col];
455 _SFR_IO8((pin >> 4) + 1) |= _BV(pin & 0xF); // OUT
456 _SFR_IO8((pin >> 4) + 2) &= ~_BV(pin & 0xF); // LOW
459 static void unselect_col(uint8_t col)
461 uint8_t pin = col_pins[col];
462 _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
463 _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI
466 static void unselect_cols(void)
468 for(uint8_t x = 0; x < MATRIX_COLS; x++) {
469 uint8_t pin = col_pins[x];
470 _SFR_IO8((pin >> 4) + 1) &= ~_BV(pin & 0xF); // IN
471 _SFR_IO8((pin >> 4) + 2) |= _BV(pin & 0xF); // HI