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Diffstat (limited to 'keyboards/pegasushoof/matrix.c')
| -rw-r--r-- | keyboards/pegasushoof/matrix.c | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/keyboards/pegasushoof/matrix.c b/keyboards/pegasushoof/matrix.c new file mode 100644 index 000000000..d2a74b8d7 --- /dev/null +++ b/keyboards/pegasushoof/matrix.c @@ -0,0 +1,204 @@ +/* +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 <stdint.h> +#include <stdbool.h> +#include <avr/io.h> +#include <util/delay.h> +#include "wait.h" +#include "print.h" +#include "debug.h" +#include "util.h" +#include "matrix.h" + +static uint8_t debouncing = DEBOUNCING_DELAY; +static matrix_row_t matrix[MATRIX_ROWS]; +static matrix_row_t matrix_debouncing[MATRIX_ROWS]; + +static matrix_row_t read_cols(void); +static void select_row(uint8_t col); + +inline uint8_t matrix_rows(void) +{ + return MATRIX_ROWS; +} + +inline uint8_t matrix_cols(void) +{ + return MATRIX_COLS; +} + +void matrix_init(void) +{ + /* Column output pins */ + DDRD |= 0b01111011; + /* Row input pins */ + DDRC &= ~0b10000000; + DDRB &= ~0b01111111; + PORTC |= 0b10000000; + PORTB |= 0b01111111; + + for (uint8_t i=0; i < MATRIX_ROWS; i++) { + matrix[i] = 0; + matrix_debouncing[i] = 0; + } + + matrix_init_quantum(); +} + +uint8_t matrix_scan(void) +{ + for (uint8_t col = 0; col < MATRIX_COLS; col++) { + select_row(col); + wait_us(30); + matrix_row_t rows = read_cols(); + for (uint8_t row = 0; row < MATRIX_ROWS; row++) { + bool prev_bit = matrix_debouncing[row] & ((matrix_row_t)1<<col); + bool curr_bit = rows & (1<<row); + if (prev_bit != curr_bit) { + matrix_debouncing[row] ^= (matrix_row_t) 1 << col; + debouncing = DEBOUNCING_DELAY; + } + } + } + + if (debouncing) { + if (--debouncing) { + wait_ms(1); + } else { + for (uint8_t i = 0; i < MATRIX_ROWS; i++) { + matrix[i] = matrix_debouncing[i]; + } + } + } + + matrix_scan_quantum(); + + return 1; +} + +bool matrix_is_modified(void) +{ + if (debouncing) + return false; + return true; +} + +inline +bool matrix_is_on(uint8_t row, uint8_t col) +{ + return matrix[row] & 1 << col; +} + +inline +matrix_row_t matrix_get_row(uint8_t row) +{ + return matrix[row]; +} + +void matrix_print(void) +{ + print("\nr/c 0123456789ABCDEF\n"); + for (uint8_t row = 0; row < MATRIX_ROWS; row++) { + phex(row); print(": "); + pbin_reverse16(matrix_get_row(row)); + print("\n"); + } +} + +uint8_t matrix_key_count(void) +{ + uint8_t count = 0; + for (uint8_t i = 0; i < MATRIX_ROWS; i++) { + count += bitpop16(matrix[i]); + } + return count; +} + +static matrix_row_t read_cols(void) +{ + return + (PINB & (1 << 5) ? 0 : 1 << 0) | + (PINC & (1 << 7) ? 0 : 1 << 1) | + (PINB & (1 << 4) ? 0 : 1 << 2) | + (PINB & (1 << 6) ? 0 : 1 << 3) | + (PINB & (1 << 1) ? 0 : 1 << 4) | + (PINB & (1 << 0) ? 0 : 1 << 5) | + (PINB & (1 << 3) ? 0 : 1 << 6) | + (PINB & (1 << 2) ? 0 : 1 << 7); +} + +static void select_row(uint8_t col) +{ + switch (col) { + case 0: + PORTD = (PORTD & ~0b01111011) | 0b00110011; + break; + case 1: + PORTD = (PORTD & ~0b01111011) | 0b01110000; + break; + case 2: + PORTD = (PORTD & ~0b01111011) | 0b00010011; + break; + case 3: + PORTD = (PORTD & ~0b01111011) | 0b01101000; + break; + case 4: + PORTD = (PORTD & ~0b01111011) | 0b00001011; + break; + case 5: + PORTD = (PORTD & ~0b01111011) | 0b00111011; + break; + case 6: + PORTD = (PORTD & ~0b01111011) | 0b01111000; + break; + case 7: + PORTD = (PORTD & ~0b01111011) | 0b01100001; + break; + case 8: + PORTD = (PORTD & ~0b01111011) | 0b01101001; + break; + case 9: + PORTD = (PORTD & ~0b01111011) | 0b01110001; + break; + case 10: + PORTD = (PORTD & ~0b01111011) | 0b01101010; + break; + case 11: + PORTD = (PORTD & ~0b01111011) | 0b01100010; + break; + case 12: + PORTD = (PORTD & ~0b01111011) | 0b01111001; + break; + case 13: + PORTD = (PORTD & ~0b01111011) | 0b01100000; + break; + case 14: + PORTD = (PORTD & ~0b01111011) | 0b01000011; + break; + case 15: + PORTD = (PORTD & ~0b01111011) | 0b00011011; + break; + case 16: + PORTD = (PORTD & ~0b01111011) | 0b00100011; + break; + case 17: + PORTD = (PORTD & ~0b01111011) | 0b00101011; + break; + } +} |