#ifndef DEBOUNCE
-# define DEBOUNCE 5
+# define DEBOUNCE 0
#endif
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 NROW 18
-#define NCOL 8
#define _DDRA (uint8_t *const)&DDRA
#define _DDRB (uint8_t *const)&DDRB
#define _DDRC (uint8_t *const)&DDRC
/* Specifies the ports and pin numbers for the rows */
static
-uint8_t *const row_ddr[NROW] = { _DDRB, _DDRB,
- _DDRC, _DDRC,
- _DDRD, _DDRD, _DDRD, _DDRD, _DDRD, _DDRD, _DDRD, _DDRD,
- _DDRF, _DDRF, _DDRF, _DDRF, _DDRF, _DDRF};
+uint8_t *const row_ddr[MATRIX_ROWS] = {
+ _DDRB, _DDRB,
+ _DDRC, _DDRC,
+ _DDRD, _DDRD, _DDRD, _DDRD, _DDRD, _DDRD, _DDRD, _DDRD,
+ _DDRF, _DDRF, _DDRF, _DDRF, _DDRF, _DDRF};
static
-uint8_t *const row_port[NROW] = { _PORTB, _PORTB,
- _PORTC, _PORTC,
- _PORTD, _PORTD, _PORTD, _PORTD, _PORTD, _PORTD, _PORTD, _PORTD,
- _PORTF, _PORTF, _PORTF, _PORTF, _PORTF, _PORTF};
+uint8_t *const row_port[MATRIX_ROWS] = {
+ _PORTB, _PORTB,
+ _PORTC, _PORTC,
+ _PORTD, _PORTD, _PORTD, _PORTD, _PORTD, _PORTD, _PORTD, _PORTD,
+ _PORTF, _PORTF, _PORTF, _PORTF, _PORTF, _PORTF};
static
-uint8_t *const row_pin[NROW] = { _PINB, _PINB,
- _PINC, _PINC,
- _PIND, _PIND, _PIND, _PIND, _PIND, _PIND, _PIND, _PIND,
- _PINF, _PINF, _PINF, _PINF, _PINF, _PINF};
+uint8_t *const row_pin[MATRIX_ROWS] = {
+ _PINB, _PINB,
+ _PINC, _PINC,
+ _PIND, _PIND, _PIND, _PIND, _PIND, _PIND, _PIND, _PIND,
+ _PINF, _PINF, _PINF, _PINF, _PINF, _PINF};
static
-const uint8_t row_bit[NROW] = { _BIT4, _BIT7,
- _BIT6, _BIT7,
- _BIT0, _BIT1, _BIT2, _BIT3, _BIT4, _BIT5, _BIT6, _BIT7,
- _BIT0, _BIT1, _BIT4, _BIT5, _BIT6, _BIT7};
+const uint8_t row_bit[MATRIX_ROWS] = {
+ _BIT4, _BIT7,
+ _BIT6, _BIT7,
+ _BIT0, _BIT1, _BIT2, _BIT3, _BIT4, _BIT5, _BIT6, _BIT7,
+ _BIT0, _BIT1, _BIT4, _BIT5, _BIT6, _BIT7};
static
const uint8_t mask = 0x0E;
/* Specifies the ports and pin numbers for the columns */
static
-const uint8_t col_bit[NCOL] = { 0x00, 0x02, 0x04, 0x06, 0x08, 0x0A, 0x0C, 0x0E};
+const uint8_t col_bit[MATRIX_COLS] = { 0x00, 0x02, 0x04, 0x06, 0x08, 0x0A, 0x0C, 0x0E};
static
inline void pull_column(int col) {
uint8_t row;
DDRB |= 0x0E;
PORTB &= ~0x0E;
- for(row = 0; row < NROW; row++) {
+ for(row = 0; row < MATRIX_ROWS; row++) {
*row_ddr[row] &= ~row_bit[row];
*row_port[row] &= ~row_bit[row];
}
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 < NCOL; col++) { // 0-7
+ for (uint8_t col = 0; col < MATRIX_COLS; col++) { // 0-7
pull_column(col); // output hi on theline
- _delay_us(1); // without this wait it won't read stable value.
- for (uint8_t row = 0; row < NROW; row++) { // 0-17
- bool prev_bit = matrix[row] & (1<<col);
+ _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_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;
}
}
if (debouncing) {
- debouncing--;
+ if (--debouncing) {
+ _delay_ms(1);
+ } else {
+ for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
+ matrix[i] = matrix_debouncing[i];
+ }
+ }
}
return 1;
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)