2 Copyright 2017 Danny Nguyen <danny@keeb.io>
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"
34 #ifdef BACKLIGHT_ENABLE
35 #include "backlight.h"
36 extern backlight_config_t backlight_config
;
45 #ifndef DEBOUNCING_DELAY
46 # define DEBOUNCING_DELAY 5
49 #if (DEBOUNCING_DELAY > 0)
50 static uint16_t debouncing_time
;
51 static bool debouncing
= false;
54 #if (MATRIX_COLS <= 8)
55 # define print_matrix_header() print("\nr/c 01234567\n")
56 # define print_matrix_row(row) print_bin_reverse8(matrix_get_row(row))
57 # define matrix_bitpop(i) bitpop(matrix[i])
58 # define ROW_SHIFTER ((uint8_t)1)
60 # error "Currently only supports 8 COLS"
62 static matrix_row_t matrix_debouncing
[MATRIX_ROWS
];
64 #define ERROR_DISCONNECT_COUNT 5
66 #define SERIAL_LED_ADDR 0x00
68 #define ROWS_PER_HAND (MATRIX_ROWS/2)
70 static uint8_t error_count
= 0;
72 static const uint8_t row_pins
[MATRIX_ROWS
] = MATRIX_ROW_PINS
;
73 static const uint8_t col_pins
[MATRIX_COLS
] = MATRIX_COL_PINS
;
75 /* matrix state(1:on, 0:off) */
76 static matrix_row_t matrix
[MATRIX_ROWS
];
77 static matrix_row_t matrix_debouncing
[MATRIX_ROWS
];
79 #if (DIODE_DIRECTION == COL2ROW)
80 static void init_cols(void);
81 static bool read_cols_on_row(matrix_row_t current_matrix
[], uint8_t current_row
);
82 static void unselect_rows(void);
83 static void select_row(uint8_t row
);
84 static void unselect_row(uint8_t row
);
85 #elif (DIODE_DIRECTION == ROW2COL)
86 static void init_rows(void);
87 static bool read_rows_on_col(matrix_row_t current_matrix
[], uint8_t current_col
);
88 static void unselect_cols(void);
89 static void unselect_col(uint8_t col
);
90 static void select_col(uint8_t col
);
93 __attribute__ ((weak
))
94 void matrix_init_kb(void) {
98 __attribute__ ((weak
))
99 void matrix_scan_kb(void) {
103 __attribute__ ((weak
))
104 void matrix_init_user(void) {
107 __attribute__ ((weak
))
108 void matrix_scan_user(void) {
112 uint8_t matrix_rows(void)
118 uint8_t matrix_cols(void)
123 void matrix_init(void)
128 // initialize row and col
134 // initialize matrix state: all keys off
135 for (uint8_t i
=0; i
< MATRIX_ROWS
; i
++) {
137 matrix_debouncing
[i
] = 0;
140 matrix_init_quantum();
144 uint8_t _matrix_scan(void)
146 int offset
= isLeftHand
? 0 : (ROWS_PER_HAND
);
147 #if (DIODE_DIRECTION == COL2ROW)
148 // Set row, read cols
149 for (uint8_t current_row
= 0; current_row
< ROWS_PER_HAND
; current_row
++) {
150 # if (DEBOUNCING_DELAY > 0)
151 bool matrix_changed
= read_cols_on_row(matrix_debouncing
+offset
, current_row
);
153 if (matrix_changed
) {
155 debouncing_time
= timer_read();
159 read_cols_on_row(matrix
+offset
, current_row
);
164 #elif (DIODE_DIRECTION == ROW2COL)
165 // Set col, read rows
166 for (uint8_t current_col
= 0; current_col
< MATRIX_COLS
; current_col
++) {
167 # if (DEBOUNCING_DELAY > 0)
168 bool matrix_changed
= read_rows_on_col(matrix_debouncing
+offset
, current_col
);
169 if (matrix_changed
) {
171 debouncing_time
= timer_read();
174 read_rows_on_col(matrix
+offset
, current_col
);
180 # if (DEBOUNCING_DELAY > 0)
181 if (debouncing
&& (timer_elapsed(debouncing_time
) > DEBOUNCING_DELAY
)) {
182 for (uint8_t i
= 0; i
< ROWS_PER_HAND
; i
++) {
183 matrix
[i
+offset
] = matrix_debouncing
[i
+offset
];
194 // Get rows from other half over i2c
195 int i2c_transaction(void) {
196 int slaveOffset
= (isLeftHand
) ? (ROWS_PER_HAND
) : 0;
198 int err
= i2c_master_start(SLAVE_I2C_ADDRESS
+ I2C_WRITE
);
199 if (err
) goto i2c_error
;
201 // start of matrix stored at 0x00
202 err
= i2c_master_write(0x00);
203 if (err
) goto i2c_error
;
205 #ifdef BACKLIGHT_ENABLE
206 // Write backlight level for slave to read
207 err
= i2c_master_write(backlight_config
.enable
? backlight_config
.level
: 0);
209 // Write zero, so our byte index is the same
210 err
= i2c_master_write(0x00);
212 if (err
) goto i2c_error
;
215 err
= i2c_master_start(SLAVE_I2C_ADDRESS
+ I2C_READ
);
216 if (err
) goto i2c_error
;
220 for (i
= 0; i
< ROWS_PER_HAND
-1; ++i
) {
221 matrix
[slaveOffset
+i
] = i2c_master_read(I2C_ACK
);
223 matrix
[slaveOffset
+i
] = i2c_master_read(I2C_NACK
);
226 i2c_error
: // the cable is disconnceted, or something else went wrong
236 int serial_transaction(void) {
237 int slaveOffset
= (isLeftHand
) ? (ROWS_PER_HAND
) : 0;
239 if (serial_update_buffers()) {
243 for (int i
= 0; i
< ROWS_PER_HAND
; ++i
) {
244 matrix
[slaveOffset
+i
] = serial_slave_buffer
[i
];
247 #ifdef BACKLIGHT_ENABLE
248 // Write backlight level for slave to read
249 serial_master_buffer
[SERIAL_LED_ADDR
] = backlight_config
.enable
? backlight_config
.level
: 0;
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 #ifdef BACKLIGHT_ENABLE
292 // Read backlight level sent from master and update level on slave
293 backlight_set(i2c_slave_buffer
[0]);
295 for (int i
= 0; i
< ROWS_PER_HAND
; ++i
) {
296 i2c_slave_buffer
[i
+1] = matrix
[offset
+i
];
299 for (int i
= 0; i
< ROWS_PER_HAND
; ++i
) {
300 serial_slave_buffer
[i
] = matrix
[offset
+i
];
303 #ifdef BACKLIGHT_ENABLE
304 // Read backlight level sent from master and update level on slave
305 backlight_set(serial_master_buffer
[SERIAL_LED_ADDR
]);
310 bool matrix_is_modified(void)
312 if (debouncing
) return false;
317 bool matrix_is_on(uint8_t row
, uint8_t col
)
319 return (matrix
[row
] & ((matrix_row_t
)1<<col
));
323 matrix_row_t
matrix_get_row(uint8_t row
)
328 void matrix_print(void)
330 print("\nr/c 0123456789ABCDEF\n");
331 for (uint8_t row
= 0; row
< MATRIX_ROWS
; row
++) {
332 phex(row
); print(": ");
333 pbin_reverse16(matrix_get_row(row
));
338 uint8_t matrix_key_count(void)
341 for (uint8_t i
= 0; i
< MATRIX_ROWS
; i
++) {
342 count
+= bitpop16(matrix
[i
]);
347 #if (DIODE_DIRECTION == COL2ROW)
349 static void init_cols(void)
351 for(uint8_t x
= 0; x
< MATRIX_COLS
; x
++) {
352 uint8_t pin
= col_pins
[x
];
353 _SFR_IO8((pin
>> 4) + 1) &= ~_BV(pin
& 0xF); // IN
354 _SFR_IO8((pin
>> 4) + 2) |= _BV(pin
& 0xF); // HI
358 static bool read_cols_on_row(matrix_row_t current_matrix
[], uint8_t current_row
)
360 // Store last value of row prior to reading
361 matrix_row_t last_row_value
= current_matrix
[current_row
];
363 // Clear data in matrix row
364 current_matrix
[current_row
] = 0;
366 // Select row and wait for row selecton to stabilize
367 select_row(current_row
);
371 for(uint8_t col_index
= 0; col_index
< MATRIX_COLS
; col_index
++) {
373 // Select the col pin to read (active low)
374 uint8_t pin
= col_pins
[col_index
];
375 uint8_t pin_state
= (_SFR_IO8(pin
>> 4) & _BV(pin
& 0xF));
377 // Populate the matrix row with the state of the col pin
378 current_matrix
[current_row
] |= pin_state
? 0 : (ROW_SHIFTER
<< col_index
);
382 unselect_row(current_row
);
384 return (last_row_value
!= current_matrix
[current_row
]);
387 static void select_row(uint8_t row
)
389 uint8_t pin
= row_pins
[row
];
390 _SFR_IO8((pin
>> 4) + 1) |= _BV(pin
& 0xF); // OUT
391 _SFR_IO8((pin
>> 4) + 2) &= ~_BV(pin
& 0xF); // LOW
394 static void unselect_row(uint8_t row
)
396 uint8_t pin
= row_pins
[row
];
397 _SFR_IO8((pin
>> 4) + 1) &= ~_BV(pin
& 0xF); // IN
398 _SFR_IO8((pin
>> 4) + 2) |= _BV(pin
& 0xF); // HI
401 static void unselect_rows(void)
403 for(uint8_t x
= 0; x
< ROWS_PER_HAND
; x
++) {
404 uint8_t pin
= row_pins
[x
];
405 _SFR_IO8((pin
>> 4) + 1) &= ~_BV(pin
& 0xF); // IN
406 _SFR_IO8((pin
>> 4) + 2) |= _BV(pin
& 0xF); // HI
410 #elif (DIODE_DIRECTION == ROW2COL)
412 static void init_rows(void)
414 for(uint8_t x
= 0; x
< ROWS_PER_HAND
; x
++) {
415 uint8_t pin
= row_pins
[x
];
416 _SFR_IO8((pin
>> 4) + 1) &= ~_BV(pin
& 0xF); // IN
417 _SFR_IO8((pin
>> 4) + 2) |= _BV(pin
& 0xF); // HI
421 static bool read_rows_on_col(matrix_row_t current_matrix
[], uint8_t current_col
)
423 bool matrix_changed
= false;
425 // Select col and wait for col selecton to stabilize
426 select_col(current_col
);
430 for(uint8_t row_index
= 0; row_index
< ROWS_PER_HAND
; row_index
++)
433 // Store last value of row prior to reading
434 matrix_row_t last_row_value
= current_matrix
[row_index
];
436 // Check row pin state
437 if ((_SFR_IO8(row_pins
[row_index
] >> 4) & _BV(row_pins
[row_index
] & 0xF)) == 0)
439 // Pin LO, set col bit
440 current_matrix
[row_index
] |= (ROW_SHIFTER
<< current_col
);
444 // Pin HI, clear col bit
445 current_matrix
[row_index
] &= ~(ROW_SHIFTER
<< current_col
);
448 // Determine if the matrix changed state
449 if ((last_row_value
!= current_matrix
[row_index
]) && !(matrix_changed
))
451 matrix_changed
= true;
456 unselect_col(current_col
);
458 return matrix_changed
;
461 static void select_col(uint8_t col
)
463 uint8_t pin
= col_pins
[col
];
464 _SFR_IO8((pin
>> 4) + 1) |= _BV(pin
& 0xF); // OUT
465 _SFR_IO8((pin
>> 4) + 2) &= ~_BV(pin
& 0xF); // LOW
468 static void unselect_col(uint8_t col
)
470 uint8_t pin
= col_pins
[col
];
471 _SFR_IO8((pin
>> 4) + 1) &= ~_BV(pin
& 0xF); // IN
472 _SFR_IO8((pin
>> 4) + 2) |= _BV(pin
& 0xF); // HI
475 static void unselect_cols(void)
477 for(uint8_t x
= 0; x
< MATRIX_COLS
; x
++) {
478 uint8_t pin
= col_pins
[x
];
479 _SFR_IO8((pin
>> 4) + 1) &= ~_BV(pin
& 0xF); // IN
480 _SFR_IO8((pin
>> 4) + 2) |= _BV(pin
& 0xF); // HI