- uint8_t count = 0;
- for (uint8_t row = 0; row < MATRIX_ROWS; row++)
- count += bitpop32(matrix[row]);
- return count;
-}
-
-static matrix_row_t scan_col(void) {
- return (
- (PINC&(1<<7) ? 0 : ((matrix_row_t)1<<0)) |
- (PINB&(1<<5) ? 0 : ((matrix_row_t)1<<1)) |
- (PINB&(1<<4) ? 0 : ((matrix_row_t)1<<2)) |
- (PINB&(1<<6) ? 0 : ((matrix_row_t)1<<3)) |
- (PINB&(1<<1) ? 0 : ((matrix_row_t)1<<4)) |
- (PINB&(1<<2) ? 0 : ((matrix_row_t)1<<5)) |
- (PINB&(1<<3) ? 0 : ((matrix_row_t)1<<6)) |
- (PINB&(1<<0) ? 0 : ((matrix_row_t)1<<7))
- );
-}
-
-static void select_col(uint8_t col) {
- switch (col) {
- case 0: PORTD = (PORTD & ~0b01111011) | 0b00011011; break;
- case 1: PORTD = (PORTD & ~0b01111011) | 0b01000011; break;
- case 2: PORTD = (PORTD & ~0b01111011) | 0b01101010; break;
- case 3: PORTD = (PORTD & ~0b01111011) | 0b01111001; break;
- case 4: PORTD = (PORTD & ~0b01111011) | 0b01100010; break;
- case 5: PORTD = (PORTD & ~0b01111011) | 0b01110001; break;
- case 6: PORTD = (PORTD & ~0b01111011) | 0b01100001; break;
- case 7: PORTD = (PORTD & ~0b01111011) | 0b01110000; break;
- case 8: PORTD = (PORTD & ~0b01111011) | 0b01100000; break;
- case 9: PORTD = (PORTD & ~0b01111011) | 0b01101000; break;
- case 10: PORTD = (PORTD & ~0b01111011) | 0b00101011; break;
- case 11: PORTD = (PORTD & ~0b01111011) | 0b00110011; break;
- case 12: PORTD = (PORTD & ~0b01111011) | 0b00100011; break;
- case 13: PORTD = (PORTD & ~0b01111011) | 0b01111000; break;
- case 14: PORTD = (PORTD & ~0b01111011) | 0b00010011; break;
- case 15: PORTD = (PORTD & ~0b01111011) | 0b01101001; break;
- case 16: PORTD = (PORTD & ~0b01111011) | 0b00001011; break;
- case 17: PORTD = (PORTD & ~0b01111011) | 0b00111011; break;
- }