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();
163 read_cols_on_row(matrix
+offset
, current_row
);
168 #elif (DIODE_DIRECTION == ROW2COL)
169 // Set col, read rows
170 for (uint8_t current_col
= 0; current_col
< MATRIX_COLS
; current_col
++) {
171 # if (DEBOUNCING_DELAY > 0)
172 bool matrix_changed
= read_rows_on_col(matrix_debouncing
+offset
, current_col
);
173 if (matrix_changed
) {
175 debouncing_time
= timer_read();
178 read_rows_on_col(matrix
+offset
, current_col
);
184 # if (DEBOUNCING_DELAY > 0)
185 if (debouncing
&& (timer_elapsed(debouncing_time
) > DEBOUNCING_DELAY
)) {
186 for (uint8_t i
= 0; i
< ROWS_PER_HAND
; i
++) {
187 matrix
[i
+offset
] = matrix_debouncing
[i
+offset
];
198 // Get rows from other half over i2c
199 int i2c_transaction(void) {
200 int slaveOffset
= (isLeftHand
) ? (ROWS_PER_HAND
) : 0;
202 int err
= i2c_master_start(SLAVE_I2C_ADDRESS
+ I2C_WRITE
);
203 if (err
) goto i2c_error
;
205 // start of matrix stored at 0x00
206 err
= i2c_master_write(0x00);
207 if (err
) goto i2c_error
;
210 err
= i2c_master_start(SLAVE_I2C_ADDRESS
+ I2C_READ
);
211 if (err
) goto i2c_error
;
215 for (i
= 0; i
< ROWS_PER_HAND
-1; ++i
) {
216 matrix
[slaveOffset
+i
] = i2c_master_read(I2C_ACK
);
218 matrix
[slaveOffset
+i
] = i2c_master_read(I2C_NACK
);
221 i2c_error
: // the cable is disconnceted, or something else went wrong
231 int serial_transaction(void) {
232 int slaveOffset
= (isLeftHand
) ? (ROWS_PER_HAND
) : 0;
234 if (serial_update_buffers()) {
238 for (int i
= 0; i
< ROWS_PER_HAND
; ++i
) {
239 matrix
[slaveOffset
+i
] = serial_slave_buffer
[i
];
245 uint8_t matrix_scan(void)
247 uint8_t ret
= _matrix_scan();
250 if( i2c_transaction() ) {
252 if( serial_transaction() ) {
254 // turn on the indicator led when halves are disconnected
259 if (error_count
> ERROR_DISCONNECT_COUNT
) {
260 // reset other half if disconnected
261 int slaveOffset
= (isLeftHand
) ? (ROWS_PER_HAND
) : 0;
262 for (int i
= 0; i
< ROWS_PER_HAND
; ++i
) {
263 matrix
[slaveOffset
+i
] = 0;
267 // turn off the indicator led on no error
271 matrix_scan_quantum();
275 void matrix_slave_scan(void) {
278 int offset
= (isLeftHand
) ? 0 : ROWS_PER_HAND
;
281 for (int i
= 0; i
< ROWS_PER_HAND
; ++i
) {
282 i2c_slave_buffer
[i
] = matrix
[offset
+i
];
285 for (int i
= 0; i
< ROWS_PER_HAND
; ++i
) {
286 serial_slave_buffer
[i
] = matrix
[offset
+i
];
291 bool matrix_is_modified(void)
293 if (debouncing
) return false;
298 bool matrix_is_on(uint8_t row
, uint8_t col
)
300 return (matrix
[row
] & ((matrix_row_t
)1<<col
));
304 matrix_row_t
matrix_get_row(uint8_t row
)
309 void matrix_print(void)
311 print("\nr/c 0123456789ABCDEF\n");
312 for (uint8_t row
= 0; row
< MATRIX_ROWS
; row
++) {
313 phex(row
); print(": ");
314 pbin_reverse16(matrix_get_row(row
));
319 uint8_t matrix_key_count(void)
322 for (uint8_t i
= 0; i
< MATRIX_ROWS
; i
++) {
323 count
+= bitpop16(matrix
[i
]);
328 #if (DIODE_DIRECTION == COL2ROW)
330 static void init_cols(void)
332 for(uint8_t x
= 0; x
< MATRIX_COLS
; x
++) {
333 uint8_t pin
= col_pins
[x
];
334 _SFR_IO8((pin
>> 4) + 1) &= ~_BV(pin
& 0xF); // IN
335 _SFR_IO8((pin
>> 4) + 2) |= _BV(pin
& 0xF); // HI
339 static bool read_cols_on_row(matrix_row_t current_matrix
[], uint8_t current_row
)
341 // Store last value of row prior to reading
342 matrix_row_t last_row_value
= current_matrix
[current_row
];
344 // Clear data in matrix row
345 current_matrix
[current_row
] = 0;
347 // Select row and wait for row selecton to stabilize
348 select_row(current_row
);
352 for(uint8_t col_index
= 0; col_index
< MATRIX_COLS
; col_index
++) {
354 // Select the col pin to read (active low)
355 uint8_t pin
= col_pins
[col_index
];
356 uint8_t pin_state
= (_SFR_IO8(pin
>> 4) & _BV(pin
& 0xF));
358 // Populate the matrix row with the state of the col pin
359 current_matrix
[current_row
] |= pin_state
? 0 : (ROW_SHIFTER
<< col_index
);
363 unselect_row(current_row
);
365 return (last_row_value
!= current_matrix
[current_row
]);
368 static void select_row(uint8_t row
)
370 uint8_t pin
= row_pins
[row
];
371 _SFR_IO8((pin
>> 4) + 1) |= _BV(pin
& 0xF); // OUT
372 _SFR_IO8((pin
>> 4) + 2) &= ~_BV(pin
& 0xF); // LOW
375 static void unselect_row(uint8_t row
)
377 uint8_t pin
= row_pins
[row
];
378 _SFR_IO8((pin
>> 4) + 1) &= ~_BV(pin
& 0xF); // IN
379 _SFR_IO8((pin
>> 4) + 2) |= _BV(pin
& 0xF); // HI
382 static void unselect_rows(void)
384 for(uint8_t x
= 0; x
< ROWS_PER_HAND
; x
++) {
385 uint8_t pin
= row_pins
[x
];
386 _SFR_IO8((pin
>> 4) + 1) &= ~_BV(pin
& 0xF); // IN
387 _SFR_IO8((pin
>> 4) + 2) |= _BV(pin
& 0xF); // HI
391 #elif (DIODE_DIRECTION == ROW2COL)
393 static void init_rows(void)
395 for(uint8_t x
= 0; x
< ROWS_PER_HAND
; x
++) {
396 uint8_t pin
= row_pins
[x
];
397 _SFR_IO8((pin
>> 4) + 1) &= ~_BV(pin
& 0xF); // IN
398 _SFR_IO8((pin
>> 4) + 2) |= _BV(pin
& 0xF); // HI
402 static bool read_rows_on_col(matrix_row_t current_matrix
[], uint8_t current_col
)
404 bool matrix_changed
= false;
406 // Select col and wait for col selecton to stabilize
407 select_col(current_col
);
411 for(uint8_t row_index
= 0; row_index
< ROWS_PER_HAND
; row_index
++)
414 // Store last value of row prior to reading
415 matrix_row_t last_row_value
= current_matrix
[row_index
];
417 // Check row pin state
418 if ((_SFR_IO8(row_pins
[row_index
] >> 4) & _BV(row_pins
[row_index
] & 0xF)) == 0)
420 // Pin LO, set col bit
421 current_matrix
[row_index
] |= (ROW_SHIFTER
<< current_col
);
425 // Pin HI, clear col bit
426 current_matrix
[row_index
] &= ~(ROW_SHIFTER
<< current_col
);
429 // Determine if the matrix changed state
430 if ((last_row_value
!= current_matrix
[row_index
]) && !(matrix_changed
))
432 matrix_changed
= true;
437 unselect_col(current_col
);
439 return matrix_changed
;
442 static void select_col(uint8_t col
)
444 uint8_t pin
= col_pins
[col
];
445 _SFR_IO8((pin
>> 4) + 1) |= _BV(pin
& 0xF); // OUT
446 _SFR_IO8((pin
>> 4) + 2) &= ~_BV(pin
& 0xF); // LOW
449 static void unselect_col(uint8_t col
)
451 uint8_t pin
= col_pins
[col
];
452 _SFR_IO8((pin
>> 4) + 1) &= ~_BV(pin
& 0xF); // IN
453 _SFR_IO8((pin
>> 4) + 2) |= _BV(pin
& 0xF); // HI
456 static void unselect_cols(void)
458 for(uint8_t x
= 0; x
< MATRIX_COLS
; x
++) {
459 uint8_t pin
= col_pins
[x
];
460 _SFR_IO8((pin
>> 4) + 1) &= ~_BV(pin
& 0xF); // IN
461 _SFR_IO8((pin
>> 4) + 2) |= _BV(pin
& 0xF); // HI