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Diffstat (limited to 'keyboards/panc60/matrix.c')
| -rw-r--r-- | keyboards/panc60/matrix.c | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/keyboards/panc60/matrix.c b/keyboards/panc60/matrix.c new file mode 100644 index 000000000..cf0f63837 --- /dev/null +++ b/keyboards/panc60/matrix.c @@ -0,0 +1,145 @@ +/* +Copyright 2018 Jack Humbert <jack.humb@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 <avr/io.h> +#include <util/delay.h> +#include <string.h> +#include "matrix.h" + +#ifndef DEBOUNCE +# define DEBOUNCE 5 +#endif + +__attribute__ ((weak)) +void matrix_init_kb(void) { + matrix_init_user(); +} + +__attribute__ ((weak)) +void matrix_scan_kb(void) { + matrix_scan_user(); +} + +__attribute__ ((weak)) +void matrix_init_user(void) { } + +__attribute__ ((weak)) +void matrix_scan_user(void) { } + +// #define MATRIX_ROW_PINS { B3, B4, B5, B6, B7 } +// #define MATRIX_COL_PINS { A0, A1, A2, A3, A4, A5, A6, A7, C7, C6, C5, C4, C3, C2, D7 } + +static uint8_t debouncing = DEBOUNCE; + +static matrix_row_t matrix[MATRIX_ROWS]; +static matrix_row_t matrix_debouncing[MATRIX_ROWS]; + +void matrix_init(void) { + + // disables JTAG so we can use them as columns + MCUCSR = (1<<JTD); + MCUCSR = (1<<JTD); + + // rows (output) + DDRB |= ((1 << 3) | (1 << 4) | (1 << 5) | (1 << 6) | (1 << 7)); + PORTB |= ((1 << 3) | (1 << 4) | (1 << 5) | (1 << 6) | (1 << 7)); + + // cols (input) + DDRA &= ~((1 << 0) | (1 << 1) | (1 << 2) | (1 << 3) | (1 << 4) | (1 << 5) | (1 << 6) | (1 << 7)); + DDRC &= ~((1 << 7) | (1 << 6) | (1 << 5) | (1 << 4) | (1 << 3) | (1 << 2)); + DDRD &= ~((1 << 7)); + + // pull-up cols + PORTA |= ((1 << 0) | (1 << 1) | (1 << 2) | (1 << 3) | (1 << 4) | (1 << 5) | (1 << 6) | (1 << 7)); + PORTC |= ((1 << 7) | (1 << 6) | (1 << 5) | (1 << 4) | (1 << 3) | (1 << 2)); + PORTD |= ((1 << 7)); + + // initialize matrix state: all keys off + for (uint8_t row = 0; row < MATRIX_ROWS; row++) { + matrix[row] = 0x00; + matrix_debouncing[row] = 0x00; + } + + matrix_init_quantum(); +} + +uint8_t matrix_scan(void) { + + // actual matrix scan + for (uint8_t c = 0; c < MATRIX_ROWS; c++) { + switch (c) { + case 0: PORTB &= ~(1 << 3); break; + case 1: PORTB &= ~(1 << 4); break; + case 2: PORTB &= ~(1 << 5); break; + case 3: PORTB &= ~(1 << 6); break; + case 4: PORTB &= ~(1 << 7); break; + } + _delay_us(5); + + matrix_row_t current_row = ( + (((PINA & (1 << 0)) ? 0 : 1 ) << 0) | + (((PINA & (1 << 1)) ? 0 : 1 ) << 1) | + (((PINA & (1 << 2)) ? 0 : 1 ) << 2) | + (((PINA & (1 << 3)) ? 0 : 1 ) << 3) | + (((PINA & (1 << 4)) ? 0 : 1 ) << 4) | + (((PINA & (1 << 5)) ? 0 : 1 ) << 5) | + (((PINA & (1 << 6)) ? 0 : 1 ) << 6) | + (((PINA & (1 << 7)) ? 0 : 1 ) << 7) | + (((PINC & (1 << 7)) ? 0 : 1 ) << 8) | + (((PINC & (1 << 6)) ? 0 : 1 ) << 9) | + (((PINC & (1 << 5)) ? 0 : 1 ) << 10) | + (((PINC & (1 << 4)) ? 0 : 1 ) << 11) | + (((PINC & (1 << 3)) ? 0 : 1 ) << 12) | + (((PINC & (1 << 2)) ? 0 : 1 ) << 13) | + (((PIND & (1 << 7)) ? 0 : 1 ) << 14) + ); + + switch (c) { + case 0: PORTB |= (1 << 3); break; + case 1: PORTB |= (1 << 4); break; + case 2: PORTB |= (1 << 5); break; + case 3: PORTB |= (1 << 6); break; + case 4: PORTB |= (1 << 7); break; + } + + if (matrix_debouncing[c] != current_row) { + matrix_debouncing[c] = current_row; + debouncing = DEBOUNCE; + } + } + + if (debouncing) { + if (--debouncing) { + _delay_ms(1); + } else { + for (uint8_t i = 0; i < MATRIX_ROWS; i++) { + matrix[i] = matrix_debouncing[i]; + } + } + } + + matrix_scan_quantum(); + + return 1; +} + +inline matrix_row_t matrix_get_row(uint8_t row) { + return matrix[row]; +} + +void matrix_print(void) { +} |