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Diffstat (limited to 'keyboards/duck/lightsaver/matrix.c')
| -rw-r--r-- | keyboards/duck/lightsaver/matrix.c | 275 |
1 files changed, 275 insertions, 0 deletions
diff --git a/keyboards/duck/lightsaver/matrix.c b/keyboards/duck/lightsaver/matrix.c new file mode 100644 index 000000000..a07cdd0d1 --- /dev/null +++ b/keyboards/duck/lightsaver/matrix.c @@ -0,0 +1,275 @@ +/* +Copyright 2016-2017 Ralf Schmitt <ralf@bunkertor.net> Rasmus Schults <rasmusx@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 <util/delay.h> +#include <avr/io.h> +#include <stdio.h> +#include "matrix.h" +#include "util.h" +#include "print.h" +#include "debug.h" + +static uint8_t debouncing = DEBOUNCING_DELAY; + +/* matrix state(1:on, 0:off) */ +static matrix_row_t matrix[MATRIX_ROWS]; +static matrix_row_t matrix_debouncing[MATRIX_ROWS]; + +static uint8_t read_rows(void); +static uint8_t read_fwkey(void); +static void init_rows(void); +static void unselect_cols(void); +static void select_col(uint8_t col); + + +__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) { +} + +void matrix_init(void) { + DDRD |= 0b11010000; + PORTD &= ~0b01010000; + DDRB |= 0b00011111; + PORTB &= ~0b00001110; + PORTB |= 0b00010001; + DDRE |= 0b01000000; + PORTE &= ~0b01000000; + + unselect_cols(); + init_rows(); + + 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_col(col); + _delay_us(3); + + uint8_t rows = read_rows(); + if(col == 0) { + rows |= read_fwkey(); + } + 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; + } + } + unselect_cols(); + } + + 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) { + print("\nr/c 0123456789ABCDEF\n"); + for (uint8_t row = 0; row < MATRIX_ROWS; row++) { + xprintf("%02X: %032lb\n", row, bitrev32(matrix_get_row(row))); + } +} + +/* Row pin configuration + * row: 0 1 2 3 4 5 + * pin: PB7 PD0 PD1 PD2 PD3 PD5 + * + * Esc uses its own pin PE2 + */ +static void init_rows(void) { + DDRB &= ~0b10000000; + PORTB &= ~0b10000000; + + DDRD &= ~0b00101111; + PORTD &= ~0b00101111; + + DDRE &= ~0b00000100; + PORTE |= 0b00000100; +} + +static uint8_t read_rows() { + return (PINB&(1<<7) ? (1<<0) : 0) | + (PIND&(1<<0) ? (1<<1) : 0) | + (PIND&(1<<1) ? (1<<2) : 0) | + (PIND&(1<<2) ? (1<<3) : 0) | + (PIND&(1<<3) ? (1<<4) : 0) | + (PIND&(1<<5) ? (1<<5) : 0); +} + +static uint8_t read_fwkey(void) +{ + return PINE&(1<<2) ? 0 : (1<<0); +} + +/* Columns 0 - 15 + * These columns uses two 74HC237D 3 to 8 bit demultiplexers. + * col / pin: PC6 PB6 PF0 PF1 PC7 + * 0: 1 0 0 0 0 + * 1: 1 0 1 0 0 + * 2: 1 0 0 1 0 + * 3: 1 0 1 1 0 + * 4: 1 0 0 0 1 + * 5: 1 0 1 0 1 + * 6: 1 0 0 1 1 + * 7: 1 0 1 1 1 + * 8: 0 1 0 0 0 + * 9: 0 1 1 0 0 + * 10: 0 1 0 1 0 + * 11: 0 1 1 1 0 + * 12: 0 1 0 0 1 + * 13: 0 1 1 0 1 + * 14: 0 1 0 1 1 + * 15: 0 1 1 1 1 + * + * col: 16 + * pin: PB5 + * + * col: 17 + * pin: PB4 + * + * col: 18 + * pin: PD7 + */ +static void unselect_cols(void) { + DDRB |= 0b01110000; + PORTB &= ~0b01110000; + + DDRC |= (1<<6) | (1<<7); + PORTC &= ~((1<<6) | (1<<7)); + + DDRF |= (1<<0) | (1<<1); + PORTF &= ~((1<<0) | (1<<1)); + + DDRD |= (1<<7); + PORTD &= ~(1<<7); +} + +static void select_col(uint8_t col) { + switch (col) { + case 0: + PORTC |= (1<<6); + break; + case 1: + PORTC |= (1<<6); + PORTF |= (1<<0); + break; + case 2: + PORTC |= (1<<6); + PORTF |= (1<<1); + break; + case 3: + PORTC |= (1<<6); + PORTF |= (1<<0) | (1<<1); + break; + case 4: + PORTC |= (1<<6); + PORTC |= (1<<7); + break; + case 5: + PORTC |= (1<<6); + PORTF |= (1<<0); + PORTC |= (1<<7); + break; + case 6: + PORTC |= (1<<6); + PORTF |= (1<<1); + PORTC |= (1<<7); + break; + case 7: + PORTC |= (1<<6); + PORTF |= (1<<0) | (1<<1); + PORTC |= (1<<7); + break; + case 8: + PORTB |= (1<<6); + break; + case 9: + PORTB |= (1<<6); + PORTF |= (1<<0); + break; + case 10: + PORTB |= (1<<6); + PORTF |= (1<<1); + break; + case 11: + PORTB |= (1<<6); + PORTF |= (1<<0) | (1<<1); + break; + case 12: + PORTB |= (1<<6); + PORTC |= (1<<7); + break; + case 13: + PORTB |= (1<<6); + PORTF |= (1<<0); + PORTC |= (1<<7); + break; + case 14: + PORTB |= (1<<6); + PORTF |= (1<<1); + PORTC |= (1<<7); + break; + case 15: + PORTB |= (1<<6); + PORTF |= (1<<0) | (1<<1); + PORTC |= (1<<7); + break; + case 16: + PORTB |= (1<<5); + break; + case 17: + PORTB |= (1<<4); + break; + case 18: + PORTD |= (1<<7); + break; + } +} |