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/*
Copyright 2014 Ralf Schmitt <ralf@bunkertor.net>
Copyright 2016 Daniel Svensson <dsvensson@gmail.com>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "matrix.h"
#include "quantum.h"
matrix_row_t read_rows(void) {
return
(PINB & (1 << 1) ? 0 : ((matrix_row_t)1 << 0)) |
(PINC & (1 << 2) ? 0 : ((matrix_row_t)1 << 1)) |
(PINB & (1 << 6) ? 0 : ((matrix_row_t)1 << 2)) |
(PINB & (1 << 4) ? 0 : ((matrix_row_t)1 << 3)) |
(PINB & (1 << 3) ? 0 : ((matrix_row_t)1 << 4)) |
(PINB & (1 << 2) ? 0 : ((matrix_row_t)1 << 5)) |
(PINB & (1 << 0) ? 0 : ((matrix_row_t)1 << 6)) |
(PINB & (1 << 5) ? 0 : ((matrix_row_t)1 << 7));
}
void select_col(uint8_t col) {
switch (col) {
case 0: PORTD = (PORTD & ~0b01111110) | 0b01100010; break;
case 1: PORTD = (PORTD & ~0b01111110) | 0b01101000; break;
case 2: PORTD = (PORTD & ~0b01111110) | 0b01101100; break;
case 3: PORTD = (PORTD & ~0b01111110) | 0b01110000; break;
case 4: PORTD = (PORTD & ~0b01111110) | 0b01111000; break;
case 5: PORTD = (PORTD & ~0b01111110) | 0b01100000; break;
case 6: PORTD = (PORTD & ~0b01111110) | 0b01110100; break;
case 7: PORTD = (PORTD & ~0b01111110) | 0b01100100; break;
case 8: PORTD = (PORTD & ~0b01111110) | 0b01111100; break;
case 9: PORTD = (PORTD & ~0b01111110) | 0b01101010; break;
case 10: PORTD = (PORTD & ~0b01111110) | 0b00110110; break;
case 11: PORTD = (PORTD & ~0b01111110) | 0b00010110; break;
case 12: PORTD = (PORTD & ~0b01111110) | 0b01001110; break;
case 13: PORTD = (PORTD & ~0b01111110) | 0b00111110; break;
case 14: PORTD = (PORTD & ~0b01111110) | 0b00011110; break;
case 15: PORTD = (PORTD & ~0b01111110) | 0b01000110; break;
case 16: PORTD = (PORTD & ~0b01111110) | 0b00100110; break;
case 17: PORTD = (PORTD & ~0b01111110) | 0b00101110; break;
}
}
void matrix_init_custom(void) {
/* Column output pins */
setPinOutput(D1);
setPinOutput(D2);
setPinOutput(D3);
setPinOutput(D4);
setPinOutput(D5);
setPinOutput(D6);
/* Row input pins */
writePinHigh(B0);
writePinHigh(B1);
writePinHigh(B2);
writePinHigh(B3);
writePinHigh(B4);
writePinHigh(B5);
writePinHigh(B6);
writePinHigh(C2);
}
bool matrix_scan_custom(matrix_row_t current_matrix[]) {
bool changed = false;
for (uint8_t col = 0; col < MATRIX_COLS; col++) {
select_col(col);
matrix_io_delay();
matrix_row_t rows = read_rows();
for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
bool prev_bit = current_matrix[row] & ((matrix_row_t)1 << col);
bool curr_bit = rows & (1 << row);
if (prev_bit != curr_bit) {
current_matrix[row] ^= (matrix_row_t)1 << col;
changed = true;
}
}
}
return changed;
}
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