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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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39
keyboard/hid_liber/matrix.c
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@ -24,10 +24,8 @@
static uint8_t debouncing = DEBOUNCE;
// bit array of key state(1:on, 0:off)
static matrix_row_t *matrix;
static matrix_row_t *matrix_debounced;
static matrix_row_t _matrix0[MATRIX_ROWS];
static matrix_row_t _matrix1[MATRIX_ROWS];
static matrix_row_t matrix[MATRIX_ROWS];
static matrix_row_t matrix_debouncing[MATRIX_ROWS];
#define _DDRA (uint8_t *const)&DDRA
@ -148,30 +146,24 @@ void matrix_init(void)
setup_leds();
// 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++) _matrix1[i] = 0x00;
matrix = _matrix0;
matrix_debounced = _matrix1;
for (uint8_t i=0; i < MATRIX_ROWS; i++) {
matrix[i] = 0;
matrix_debouncing[i] = 0;
}
}
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
pull_column(col); // output hi on theline
_delay_us(5); // without this wait it won't read stable value.
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];
if (prev_bit != curr_bit) {
matrix[row] ^= (1<<col);
matrix_debouncing[row] ^= ((matrix_row_t)1<<col);
if (debouncing) {
debug("bounce!: "); debug_hex(debouncing); print("\n");
dprintf("bounce!: %02X\n", debouncing);
}
debouncing = DEBOUNCE;
}
@ -180,8 +172,13 @@ uint8_t matrix_scan(void)
}
if (debouncing) {
_delay_ms(1);
debouncing--;
if (--debouncing) {
_delay_ms(1);
} else {
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
matrix[i] = matrix_debouncing[i];
}
}
}
return 1;
@ -202,13 +199,13 @@ bool matrix_has_ghost(void)
inline
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
matrix_row_t matrix_get_row(uint8_t row)
{
return matrix_debounced[row];
return matrix[row];
}
void matrix_print(void)