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Diffstat (limited to 'keyboard/lightsaber/matrix.c')
| -rw-r--r-- | keyboard/lightsaber/matrix.c | 292 |
1 files changed, 0 insertions, 292 deletions
diff --git a/keyboard/lightsaber/matrix.c b/keyboard/lightsaber/matrix.c deleted file mode 100644 index e3eca84df8..0000000000 --- a/keyboard/lightsaber/matrix.c +++ /dev/null @@ -1,292 +0,0 @@ -/* -Copyright 2014 Ralf Schmitt <ralf@bunkertor.net> - -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 "print.h" -#include "debug.h" -#include "util.h" -#include "matrix.h" - - -#ifndef DEBOUNCE -# define DEBOUNCE 0 -#endif -static uint8_t debouncing = DEBOUNCE; - -/* 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); - -inline -uint8_t matrix_rows(void) -{ - return MATRIX_ROWS; -} - -inline -uint8_t matrix_cols(void) -{ - return MATRIX_COLS; -} - -void matrix_init(void) -{ - unselect_cols(); - init_rows(); - // initialize matrix state: all keys off - for (uint8_t i=0; i < MATRIX_ROWS; i++) { - matrix[i] = 0; - matrix_debouncing[i] = 0; - } -} - -uint8_t matrix_scan(void) -{ - for (uint8_t col = 0; col < MATRIX_COLS; col++) { // 0-17 - select_col(col); - _delay_us(3); // TODO: Determine the correct value needed here. - uint8_t rows = read_rows(); - // Use the otherwise unused col: 12 row: 3 for firmware. - if(col == 12) { - rows |= read_fwkey(); - } - for (uint8_t row = 0; row < MATRIX_ROWS; row++) { // 0-5 - 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); - if (debouncing) { - dprint("bounce!: "); dprintf("%02X", debouncing); dprintln(); - } - debouncing = DEBOUNCE; - } - } - unselect_cols(); - } - - if (debouncing) { - if (--debouncing) { - _delay_ms(1); - } else { - for (uint8_t i = 0; i < MATRIX_ROWS; i++) { - matrix[i] = matrix_debouncing[i]; - } - } - } - - 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] & ((matrix_row_t)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++) { - xprintf("%02X: %032lb\n", row, bitrev32(matrix_get_row(row))); - } -} - -uint8_t matrix_key_count(void) -{ - uint8_t count = 0; - for (uint8_t i = 0; i < MATRIX_ROWS; i++) { - count += bitpop32(matrix[i]); - } - return count; -} - -/* Row pin configuration - * row: 0 1 2 3 4 5 - * pin: PD0 PD1 PD2 PD3 PD5 PB7 - * - * Firmware uses its own pin PE2 - */ -static void init_rows(void) -{ - // Input (DDR:0, PORT:0) - DDRD &= ~0b00101111; - PORTD &= ~0b00101111; - DDRB &= ~(1<<7); - PORTB &= ~(1<<7); - - // Input with pull-up (DDR:0, PORT:1) - DDRE &= ~(1<<2); - PORTE |= (1<<2); -} - -static uint8_t read_rows(void) -{ - return (PIND&(1<<0) ? (1<<0) : 0) | - (PIND&(1<<1) ? (1<<1) : 0) | - (PIND&(1<<2) ? (1<<2) : 0) | - (PIND&(1<<3) ? (1<<3) : 0) | - (PIND&(1<<5) ? (1<<4) : 0) | - (PINB&(1<<7) ? (1<<5) : 0); -} - -static uint8_t read_fwkey(void) -{ - return PINE&(1<<2) ? 0 : (1<<3); -} - -/* 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: PD4 - */ -static void unselect_cols(void) -{ - DDRB |= (1<<5) | (1<<6); - PORTB &= ~((1<<5) | (1<<6)); - - DDRC |= (1<<6) | (1<<7); - PORTC &= ~((1<<6) | (1<<7)); - - DDRD |= (1<<4); - PORTD &= ~(1<<4); - - DDRF |= (1<<0) | (1<<1); - PORTF &= ~((1<<0) | (1<<1)); -} - -static void select_col(uint8_t col) -{ - // Output high (DDR:1, PORT:1) to select - 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: - PORTD |= (1<<4); - break; - } -} |