7 #include <util/delay.h>
15 #if (MATRIX_COLS > 16)
16 # error "MATRIX_COLS must not exceed 16"
18 #if (MATRIX_ROWS > 255)
19 # error "MATRIX_ROWS must not exceed 255"
23 static bool _matrix_is_modified = false;
25 // matrix state buffer(1:on, 0:off)
26 #if (MATRIX_COLS <= 8)
27 static uint8_t *matrix;
28 static uint8_t _matrix0[MATRIX_ROWS];
30 static uint16_t *matrix;
31 static uint16_t _matrix0[MATRIX_ROWS];
34 #ifdef MATRIX_HAS_GHOST
35 static bool matrix_has_ghost_in_row(uint8_t row);
37 static void _register_key(uint8_t key);
41 uint8_t matrix_rows(void)
47 uint8_t matrix_cols(void)
52 void matrix_init(void)
56 // initialize matrix state: all keys off
57 for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix0[i] = 0x00;
63 debug_keyboard = true;
65 print("debug enabled.\n");
69 uint8_t matrix_scan(void)
74 _matrix_is_modified = false;
75 codes = adb_host_kbd_recv();
79 if (codes == 0) { // no keys
81 } else if (key0 == 0xFF && key1 != 0xFF) { // error
84 _matrix_is_modified = true;
86 if (key1 != 0xFF) // key1 is 0xFF when no second key.
91 print("adb_host_kbd_recv: "); phex16(codes); print("\n");
96 bool matrix_is_modified(void)
98 return _matrix_is_modified;
102 bool matrix_has_ghost(void)
104 #ifdef MATRIX_HAS_GHOST
105 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
106 if (matrix_has_ghost_in_row(i))
114 bool matrix_is_on(uint8_t row, uint8_t col)
116 return (matrix[row] & (1<<col));
120 #if (MATRIX_COLS <= 8)
121 uint8_t matrix_get_row(uint8_t row)
123 uint16_t matrix_get_row(uint8_t row)
129 void matrix_print(void)
131 #if (MATRIX_COLS <= 8)
132 print("\nr/c 01234567\n");
134 print("\nr/c 0123456789ABCDEF\n");
136 for (uint8_t row = 0; row < matrix_rows(); row++) {
137 phex(row); print(": ");
138 #if (MATRIX_COLS <= 8)
139 pbin_reverse(matrix_get_row(row));
141 pbin_reverse16(matrix_get_row(row));
143 #ifdef MATRIX_HAS_GHOST
144 if (matrix_has_ghost_in_row(row)) {
152 uint8_t matrix_key_count(void)
155 for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
156 #if (MATRIX_COLS <= 8)
157 count += bitpop(matrix[i]);
159 count += bitpop16(matrix[i]);
165 #ifdef MATRIX_HAS_GHOST
167 static bool matrix_has_ghost_in_row(uint8_t row)
169 // no ghost exists in case less than 2 keys on
170 if (((matrix[row] - 1) & matrix[row]) == 0)
173 // ghost exists in case same state as other row
174 for (uint8_t i=0; i < MATRIX_ROWS; i++) {
175 if (i != row && (matrix[i] & matrix[row]) == matrix[row])
183 static void _register_key(uint8_t key)
189 matrix[row] &= ~(1<<col);
191 matrix[row] |= (1<<col);