#endif
static uint8_t debouncing = DEBOUNCE;
-// matrix state buffer(1:on, 0:off)
+/* matrix state(1:on, 0:off) */
static uint16_t *matrix;
-static uint16_t *matrix_prev;
-static uint16_t _matrix0[MATRIX_ROWS];
-static uint16_t _matrix1[MATRIX_ROWS];
+static uint16_t *matrix_debouncing;
+static uint16_t matrix0[MATRIX_ROWS];
+static uint16_t matrix1[MATRIX_ROWS];
+static bool is_modified;
static uint16_t read_cols(void);
static void init_cols(void);
init_cols();
// initialize matrix state: all keys off
- for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix0[i] = 0;
- for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix1[i] = 0;
- matrix = _matrix0;
- matrix_prev = _matrix1;
+ matrix = matrix0;
+ matrix_debouncing = matrix1;
+ for (uint8_t i=0; i < MATRIX_ROWS; i++) {
+ matrix[i] = 0;
+ matrix_debouncing[i] = 0;
+ }
+ is_modified = false;
}
uint8_t matrix_scan(void)
{
- if (!debouncing) {
- uint16_t *tmp = matrix_prev;
- matrix_prev = matrix;
- matrix = tmp;
- }
-
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
- unselect_rows();
+ //unselect_rows();
select_row(i);
- _delay_us(1); // without this wait read unstable value.
- uint16_t cols = ~read_cols();
- if (matrix[i] != cols) {
- matrix[i] = cols;
+ _delay_us(30); // without this wait read unstable value.
+ uint16_t cols = read_cols();
+ if (matrix_debouncing[i] != cols) {
+ matrix_debouncing[i] = cols;
if (debouncing) {
- debug("bounce!: "); debug_hex(debouncing); print("\n");
+ debug("bounce!: "); debug_hex(debouncing); debug("\n");
}
debouncing = DEBOUNCE;
+ is_modified = false;
}
+ unselect_rows();
}
- unselect_rows();
+ //unselect_rows();
if (debouncing) {
debouncing--;
- _delay_ms(1); // improved affect on bouncing
+ _delay_ms(1);
+ } else {
+ uint16_t *tmp = matrix;
+ matrix = matrix_debouncing;
+ matrix_debouncing = tmp;
+ is_modified = true;
}
return 1;
bool matrix_is_modified(void)
{
- if (debouncing) return false;
- for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
- if (matrix[i] != matrix_prev[i]) {
- return true;
- }
- }
- return false;
+ return is_modified;
}
inline
void matrix_print(void)
{
- print("\nr/c 01234567\n");
+ print("\nr/c 0123456789ABCDEF\n");
for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
phex(row); print(": ");
pbin_reverse16(matrix_get_row(row));
static uint16_t read_cols(void)
{
- return (PINF&(1<<0) ? (1<<0) : 0) |
- (PINF&(1<<1) ? (1<<1) : 0) |
- (PINE&(1<<6) ? (1<<2) : 0) |
- (PINC&(1<<7) ? (1<<3) : 0) |
- (PINC&(1<<6) ? (1<<4) : 0) |
- (PINB&(1<<6) ? (1<<5) : 0) |
- (PIND&(1<<4) ? (1<<6) : 0) |
- (PINB&(1<<1) ? (1<<7) : 0) |
- (PINB&(1<<0) ? (1<<8) : 0) |
- (PINB&(1<<5) ? (1<<9) : 0) |
- (PINB&(1<<4) ? (1<<10) : 0) |
- (PIND&(1<<7) ? (1<<11) : 0) |
- (PIND&(1<<6) ? (1<<12) : 0) |
- (PINB&(1<<3) ? (1<<13) : 0);
+ return (PINF&(1<<0) ? 0 : (1<<0)) |
+ (PINF&(1<<1) ? 0 : (1<<1)) |
+ (PINE&(1<<6) ? 0 : (1<<2)) |
+ (PINC&(1<<7) ? 0 : (1<<3)) |
+ (PINC&(1<<6) ? 0 : (1<<4)) |
+ (PINB&(1<<6) ? 0 : (1<<5)) |
+ (PIND&(1<<4) ? 0 : (1<<6)) |
+ (PINB&(1<<1) ? 0 : (1<<7)) |
+ (PINB&(1<<0) ? 0 : (1<<8)) |
+ (PINB&(1<<5) ? 0 : (1<<9)) |
+ (PINB&(1<<4) ? 0 : (1<<10)) |
+ (PIND&(1<<7) ? 0 : (1<<11)) |
+ (PIND&(1<<6) ? 0 : (1<<12)) |
+ (PINB&(1<<3) ? 0 : (1<<13));
}
/* Row pin configuration