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@ -31,7 +31,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
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static uint8_t debouncing = DEBOUNCE;
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static matrix_row_t matrix[MATRIX_ROWS];
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static uint8_t matrix_debouncing[MATRIX_COLS];
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static matrix_row_t matrix_debouncing[MATRIX_ROWS];
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void matrix_init(void) {
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@ -40,27 +40,26 @@ void matrix_init(void) {
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//ADCSRA = 0;
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// rows (input)
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DDRA &= ~((1 << 7) | (1 << 6) | (1 << 5) | (1 << 4));
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PORTA &= ~((1 << 7) | (1 << 6) | (1 << 5) | (1 << 4));
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// rows (output)
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DDRA |= ((1 << 7) | (1 << 6) | (1 << 5) | (1 << 4));
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PORTA |= ((1 << 7) | (1 << 6) | (1 << 5) | (1 << 4));
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// cols (output)
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DDRD |= ((1 << 7));
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DDRC |= ((1 << 2) | (1 << 3) | (1 << 4) | (1 << 5) | (1 << 6) | (1 << 7));
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DDRA |= ((1 << 3) | (1 << 2) | (1 << 1) | (1 << 0));
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DDRB |= ((1 << 0));
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// cols (input)
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DDRD &= ~((1 << 7));
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DDRC &= ~((1 << 2) | (1 << 3) | (1 << 4) | (1 << 5) | (1 << 6) | (1 << 7));
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DDRA &= ~((1 << 3) | (1 << 2) | (1 << 1) | (1 << 0));
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DDRB &= ~((1 << 0));
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PORTD &= ~((1 << 7));
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PORTC &= ~((1 << 2) | (1 << 3) | (1 << 4) | (1 << 5) | (1 << 6) | (1 << 7));
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PORTA &= ~((1 << 3) | (1 << 2) | (1 << 1) | (1 << 0));
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PORTB &= ~((1 << 0));
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// pull-up cols
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PORTD |= ((1 << 7));
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PORTC |= ((1 << 2) | (1 << 3) | (1 << 4) | (1 << 5) | (1 << 6) | (1 << 7));
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PORTA |= ((1 << 3) | (1 << 2) | (1 << 1) | (1 << 0));
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PORTB |= ((1 << 0));
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// initialize matrix state: all keys off
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for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
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matrix[row] = 0x00;
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}
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for (uint8_t col = 0; col < MATRIX_COLS; col++) {
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matrix_debouncing[col] = 0x00;
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matrix_debouncing[row] = 0x00;
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}
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matrix_init_quantum();
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@ -68,47 +67,39 @@ void matrix_init(void) {
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uint8_t matrix_scan(void) {
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for (uint8_t c = 0; c < MATRIX_COLS; c++) {
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for (uint8_t c = 0; c < MATRIX_ROWS; c++) {
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switch (c) {
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case 0: PORTD |= (1 << 7); break;
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case 1: PORTC |= (1 << 2); break;
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case 2: PORTC |= (1 << 3); break;
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case 3: PORTC |= (1 << 4); break;
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case 4: PORTC |= (1 << 5); break;
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case 5: PORTC |= (1 << 6); break;
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case 6: PORTC |= (1 << 7); break;
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case 7: PORTA |= (1 << 3); break;
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case 8: PORTA |= (1 << 2); break;
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case 9: PORTA |= (1 << 1); break;
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case 10: PORTA |= (1 << 0); break;
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case 11: PORTB |= (1 << 0); break;
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case 0: PORTA &= ~(1 << 7); break;
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case 1: PORTA &= ~(1 << 6); break;
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case 2: PORTA &= ~(1 << 5); break;
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case 3: PORTA &= ~(1 << 4); break;
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}
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_delay_us(5);
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uint8_t current_col = (
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((PINA & (1 << 7)) ? 1 : 0 ) |
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(((PINA & (1 << 6)) ? 1 : 0 ) << 1) |
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(((PINA & (1 << 5)) ? 1 : 0 ) << 2) |
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(((PINA & (1 << 4)) ? 1 : 0 ) << 3)
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matrix_row_t current_row = (
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(((PIND & (1 << 7)) ? 0 : 1 ) << 0) |
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(((PINC & (1 << 2)) ? 0 : 1 ) << 1) |
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(((PINC & (1 << 3)) ? 0 : 1 ) << 2) |
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(((PINC & (1 << 4)) ? 0 : 1 ) << 3) |
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(((PINC & (1 << 5)) ? 0 : 1 ) << 4) |
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(((PINC & (1 << 6)) ? 0 : 1 ) << 5) |
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(((PINC & (1 << 7)) ? 0 : 1 ) << 6) |
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(((PINA & (1 << 3)) ? 0 : 1 ) << 7) |
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(((PINA & (1 << 2)) ? 0 : 1 ) << 8) |
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(((PINA & (1 << 1)) ? 0 : 1 ) << 9) |
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(((PINA & (1 << 0)) ? 0 : 1 ) << 10) |
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(((PINB & (1 << 0)) ? 0 : 1 ) << 11)
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);
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switch (c) {
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case 0: PORTD &= ~(1 << 7); break;
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case 1: PORTC &= ~(1 << 2); break;
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case 2: PORTC &= ~(1 << 3); break;
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case 3: PORTC &= ~(1 << 4); break;
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case 4: PORTC &= ~(1 << 5); break;
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case 5: PORTC &= ~(1 << 6); break;
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case 6: PORTC &= ~(1 << 7); break;
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case 7: PORTA &= ~(1 << 3); break;
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case 8: PORTA &= ~(1 << 2); break;
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case 9: PORTA &= ~(1 << 1); break;
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case 10: PORTA &= ~(1 << 0); break;
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case 11: PORTB &= ~(1 << 0); break;
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case 0: PORTA |= (1 << 7); break;
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case 1: PORTA |= (1 << 6); break;
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case 2: PORTA |= (1 << 5); break;
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case 3: PORTA |= (1 << 4); break;
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}
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if (matrix_debouncing[c] != current_col) {
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matrix_debouncing[c] = current_col;
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if (matrix_debouncing[c] != current_row) {
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matrix_debouncing[c] = current_row;
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debouncing = DEBOUNCE;
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}
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}
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@ -118,10 +109,7 @@ uint8_t matrix_scan(void) {
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_delay_ms(1);
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} else {
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for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
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matrix[i] = 0;
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for (uint8_t j = 0; j < MATRIX_COLS; j++) {
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matrix[i] |= (((matrix_debouncing[j] & (1 << i)) ? 1L : 0 ) << j);
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}
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matrix[i] = matrix_debouncing[i];
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}
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}
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}
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