#ifndef DEBOUNCE
-# define DEBOUNCE 0
+# define DEBOUNCE 5
#endif
static uint8_t debouncing = DEBOUNCE;
// matrix state buffer(1:on, 0:off)
-#if (MATRIX_COLS <= 8)
-static uint8_t *matrix;
-static uint8_t *matrix_prev;
-static uint8_t _matrix0[MATRIX_ROWS];
-static uint8_t _matrix1[MATRIX_ROWS];
-#else
-static uint16_t *matrix;
-static uint16_t *matrix_prev;
-static uint16_t _matrix0[MATRIX_ROWS];
-static uint16_t _matrix1[MATRIX_ROWS];
-#endif
+static matrix_row_t *matrix;
+static matrix_row_t *matrix_debouncing;
+static matrix_row_t matrix0[MATRIX_ROWS];
+static matrix_row_t matrix1[MATRIX_ROWS];
#ifdef MATRIX_HAS_GHOST
static bool matrix_has_ghost_in_row(uint8_t row);
#endif
-static uint8_t read_col(void);
+static matrix_row_t read_col(void);
static void unselect_rows(void);
static void select_row(uint8_t row);
PORTB = 0xFF;
// 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_prev = _matrix1;
+ for (uint8_t i=0; i < MATRIX_ROWS; i++) {
+ matrix0[i] = 0;
+ matrix1[i] = 0;
+ }
+ matrix = matrix0;
+ matrix_debouncing = matrix1;
}
uint8_t matrix_scan(void)
{
- if (!debouncing) {
- uint8_t *tmp = matrix_prev;
- matrix_prev = matrix;
- matrix = tmp;
- }
-
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
unselect_rows();
select_row(i);
_delay_us(30); // without this wait read unstable value.
- if (matrix[i] != (uint8_t)~read_col()) {
- matrix[i] = (uint8_t)~read_col();
+ if (matrix[i] != read_col()) {
+ matrix[i] = read_col();
if (debouncing) {
debug("bounce!: "); debug_hex(debouncing); print("\n");
}
unselect_rows();
if (debouncing) {
- debouncing--;
+ if (--debouncing) {
+ _delay_ms(1);
+ } else {
+ matrix_row_t *tmp = matrix;
+ matrix = matrix_debouncing;
+ matrix_debouncing = tmp;
+ }
+
}
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;
-}
-
-inline
-bool matrix_has_ghost(void)
-{
-#ifdef MATRIX_HAS_GHOST
- for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
- if (matrix_has_ghost_in_row(i))
- return true;
- }
-#endif
- return false;
+ return true;
}
inline
}
inline
-#if (MATRIX_COLS <= 8)
-uint8_t matrix_get_row(uint8_t row)
-#else
-uint16_t matrix_get_row(uint8_t row)
-#endif
+matrix_row_t matrix_get_row(uint8_t row)
{
return matrix[row];
}
#endif
inline
-static uint8_t read_col(void)
+static matrix_row_t read_col(void)
{
- return PINB;
+ return ~PINB;
}
inline
static void unselect_rows(void)
{
// Hi-Z(DDR:0, PORT:0) to unselect
- DDRC &= ~0b11000000; // PC: 7,6
- PORTC &= ~0b11000000;
- DDRD &= ~0b11000111; // PD: 7,6,2,1,0
- PORTD &= ~0b11000111;
+ DDRC &= ~0b01000000; // PC: 6
+ PORTC &= ~0b01000000;
+ DDRD &= ~0b11100111; // PD: 7,6,5,2,1,0
+ PORTD &= ~0b11100111;
DDRF &= ~0b11000000; // PF: 7,6
PORTF &= ~0b11000000;
}
{
// Output low(DDR:1, PORT:0) to select
// row: 0 1 2 3 4 5 6 7 8
- // pin: PD0, PC7, PD7, PF6, PD6, PD1, PD2, PC6, PF7
+ // pin: PD0, PD5, PD7, PF6, PD6, PD1, PD2, PC6, PF7
switch (row) {
case 0:
DDRD |= (1<<0);
PORTD &= ~(1<<0);
break;
case 1:
- DDRC |= (1<<7);
- PORTC &= ~(1<<7);
+ DDRD |= (1<<5);
+ PORTD &= ~(1<<5);
break;
case 2:
DDRD |= (1<<7);