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git.gir.st - tmk_keyboard.git/blob - converter/adb_usb/matrix.c
2 Copyright 2011 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/>.
24 #include <util/delay.h>
34 #if (MATRIX_COLS > 16)
35 # error "MATRIX_COLS must not exceed 16"
37 #if (MATRIX_ROWS > 255)
38 # error "MATRIX_ROWS must not exceed 255"
41 #define ADB_CAPS_UP (ADB_CAPS | 0x80)
44 static bool is_modified
= false;
46 // matrix state buffer(1:on, 0:off)
47 #if (MATRIX_COLS <= 8)
48 static uint8_t matrix
[MATRIX_ROWS
];
50 static uint16_t matrix
[MATRIX_ROWS
];
53 #ifdef MATRIX_HAS_GHOST
54 static bool matrix_has_ghost_in_row(uint8_t row
);
56 static void register_key(uint8_t key
);
60 uint8_t matrix_rows(void)
66 uint8_t matrix_cols(void)
71 void matrix_init(void)
75 // initialize matrix state: all keys off
76 for (uint8_t i
=0; i
< MATRIX_ROWS
; i
++) matrix
[i
] = 0x00;
81 debug_keyboard
= true;
83 print("debug enabled.\n");
87 uint8_t matrix_scan(void)
93 codes
= adb_host_kbd_recv();
97 if (debug_matrix
&& codes
) {
98 print("adb_host_kbd_recv: "); phex16(codes
); print("\n");
101 #ifdef MATRIX_HAS_LOCKING_CAPS
102 // Send Caps key up event
103 if (matrix_is_on(MATRIX_ROW(ADB_CAPS
), MATRIX_COL(ADB_CAPS
))) {
104 register_key(ADB_CAPS_UP
);
107 if (codes
== 0) { // no keys
109 } else if (codes
== 0x7F7F) { // power key press
111 } else if (codes
== 0xFFFF) { // power key release
113 } else if (key0
== 0xFF) { // error
114 if (debug_matrix
) print("adb_host_kbd_recv: ERROR(matrix cleared.)\n");
115 // clear matrix to unregister all keys
116 for (uint8_t i
=0; i
< MATRIX_ROWS
; i
++) matrix
[i
] = 0x00;
119 #ifdef MATRIX_HAS_LOCKING_CAPS
120 if (host_keyboard_leds() & (1<<USB_LED_CAPS_LOCK
)) {
121 // Ignore LockingCaps key down event when CAPS LOCK is on
122 if (key0
== ADB_CAPS
&& (key1
== ADB_CAPS
|| key1
== 0xFF)) return 0;
123 if (key0
== ADB_CAPS
) key0
= key1
;
124 if (key1
== ADB_CAPS
) key1
= 0xFF;
125 // Convert LockingCaps key up event into down event
126 if (key0
== ADB_CAPS_UP
) key0
= ADB_CAPS
;
127 if (key1
== ADB_CAPS_UP
) key1
= ADB_CAPS
;
129 // ADB_CAPS LOCK off:
130 // Ignore LockingCaps key up event when ADB_CAPS LOCK is off
131 if (key0
== ADB_CAPS_UP
&& (key1
== ADB_CAPS_UP
|| key1
== 0xFF)) return 0;
132 if (key0
== ADB_CAPS_UP
) key0
= key1
;
133 if (key1
== ADB_CAPS_UP
) key1
= 0xFF;
137 if (key1
!= 0xFF) // key1 is 0xFF when no second key.
144 bool matrix_is_modified(void)
150 bool matrix_has_ghost(void)
152 #ifdef MATRIX_HAS_GHOST
153 for (uint8_t i
= 0; i
< MATRIX_ROWS
; i
++) {
154 if (matrix_has_ghost_in_row(i
))
162 bool matrix_is_on(uint8_t row
, uint8_t col
)
164 return (matrix
[row
] & (1<<col
));
168 #if (MATRIX_COLS <= 8)
169 uint8_t matrix_get_row(uint8_t row
)
171 uint16_t matrix_get_row(uint8_t row
)
177 void matrix_print(void)
179 if (!debug_matrix
) return;
180 #if (MATRIX_COLS <= 8)
181 print("r/c 01234567\n");
183 print("r/c 0123456789ABCDEF\n");
185 for (uint8_t row
= 0; row
< matrix_rows(); row
++) {
186 phex(row
); print(": ");
187 #if (MATRIX_COLS <= 8)
188 pbin_reverse(matrix_get_row(row
));
190 pbin_reverse16(matrix_get_row(row
));
192 #ifdef MATRIX_HAS_GHOST
193 if (matrix_has_ghost_in_row(row
)) {
201 uint8_t matrix_key_count(void)
204 for (uint8_t i
= 0; i
< MATRIX_ROWS
; i
++) {
205 #if (MATRIX_COLS <= 8)
206 count
+= bitpop(matrix
[i
]);
208 count
+= bitpop16(matrix
[i
]);
214 #ifdef MATRIX_HAS_GHOST
216 static bool matrix_has_ghost_in_row(uint8_t row
)
218 // no ghost exists in case less than 2 keys on
219 if (((matrix
[row
] - 1) & matrix
[row
]) == 0)
222 // ghost exists in case same state as other row
223 for (uint8_t i
=0; i
< MATRIX_ROWS
; i
++) {
224 if (i
!= row
&& (matrix
[i
] & matrix
[row
]) == matrix
[row
])
232 static void register_key(uint8_t key
)
238 matrix
[row
] &= ~(1<<col
);
240 matrix
[row
] |= (1<<col
);