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Fix debouncing bug in hid_liber(Issue #26)

This commit is contained in:
tmk 2013-06-25 09:31:54 +09:00
parent 5a0415749d
commit 681e019450
1 changed files with 18 additions and 21 deletions
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37
keyboard/hid_liber/matrix.c
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@ -24,10 +24,8 @@
static uint8_t debouncing = DEBOUNCE; static uint8_t debouncing = DEBOUNCE;
// bit array of key state(1:on, 0:off) // bit array of key state(1:on, 0:off)
static matrix_row_t *matrix; static matrix_row_t matrix[MATRIX_ROWS];
static matrix_row_t *matrix_debounced; static matrix_row_t matrix_debouncing[MATRIX_ROWS];
static matrix_row_t _matrix0[MATRIX_ROWS];
static matrix_row_t _matrix1[MATRIX_ROWS];
#define _DDRA (uint8_t *const)&DDRA #define _DDRA (uint8_t *const)&DDRA
@ -148,30 +146,24 @@ void matrix_init(void)
setup_leds(); setup_leds();
// initialize matrix state: all keys off // initialize matrix state: all keys off
for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix0[i] = 0x00; for (uint8_t i=0; i < MATRIX_ROWS; i++) {
for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix1[i] = 0x00; matrix[i] = 0;
matrix = _matrix0; matrix_debouncing[i] = 0;
matrix_debounced = _matrix1; }
} }
uint8_t matrix_scan(void) uint8_t matrix_scan(void)
{ {
if (!debouncing) {
uint8_t *tmp = matrix_debounced;
matrix_debounced = matrix;
matrix = tmp;
}
for (uint8_t col = 0; col < MATRIX_COLS; col++) { // 0-7 for (uint8_t col = 0; col < MATRIX_COLS; col++) { // 0-7
pull_column(col); // output hi on theline pull_column(col); // output hi on theline
_delay_us(5); // without this wait it won't read stable value. _delay_us(5); // without this wait it won't read stable value.
for (uint8_t row = 0; row < MATRIX_ROWS; row++) { // 0-17 for (uint8_t row = 0; row < MATRIX_ROWS; row++) { // 0-17
bool prev_bit = matrix[row] & (1<<col); bool prev_bit = matrix_debouncing[row] & (1<<col);
bool curr_bit = *row_pin[row] & row_bit[row]; bool curr_bit = *row_pin[row] & row_bit[row];
if (prev_bit != curr_bit) { if (prev_bit != curr_bit) {
matrix[row] ^= (1<<col); matrix_debouncing[row] ^= ((matrix_row_t)1<<col);
if (debouncing) { if (debouncing) {
debug("bounce!: "); debug_hex(debouncing); print("\n"); dprintf("bounce!: %02X\n", debouncing);
} }
debouncing = DEBOUNCE; debouncing = DEBOUNCE;
} }
@ -180,8 +172,13 @@ uint8_t matrix_scan(void)
} }
if (debouncing) { if (debouncing) {
if (--debouncing) {
_delay_ms(1); _delay_ms(1);
debouncing--; } else {
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
matrix[i] = matrix_debouncing[i];
}
}
} }
return 1; return 1;
@ -202,13 +199,13 @@ bool matrix_has_ghost(void)
inline inline
bool matrix_is_on(uint8_t row, uint8_t col) bool matrix_is_on(uint8_t row, uint8_t col)
{ {
return (matrix_debounced[row] & (1<<col)); return (matrix[row] & ((matrix_row_t)1<<col));
} }
inline inline
matrix_row_t matrix_get_row(uint8_t row) matrix_row_t matrix_get_row(uint8_t row)
{ {
return matrix_debounced[row]; return matrix[row];
} }
void matrix_print(void) void matrix_print(void)