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Diffstat (limited to 'keyboards/amjkeyboard/amj96/matrix.c')
| -rw-r--r-- | keyboards/amjkeyboard/amj96/matrix.c | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/keyboards/amjkeyboard/amj96/matrix.c b/keyboards/amjkeyboard/amj96/matrix.c new file mode 100644 index 0000000000..2999c6241b --- /dev/null +++ b/keyboards/amjkeyboard/amj96/matrix.c @@ -0,0 +1,204 @@ +/* +Copyright 2014 Kai Ryu <kai1103@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/>. +*/ + +/* + * scan matrix + */ +#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" +#ifdef UART_RGB_ENABLE +#include "uart_rgb.h" +#endif + +#ifndef DEBOUNCE +# define DEBOUNCE 5 +#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 matrix_row_t read_cols(void); +static void init_cols(void); +static void init_rows(void); +static void unselect_rows(void); +static void select_row(uint8_t row); + +inline +uint8_t matrix_rows(void) +{ + return MATRIX_ROWS; +} + +inline +uint8_t matrix_cols(void) +{ + return MATRIX_COLS; +} + +void matrix_init(void) +{ + +#ifdef UART_RGB_ENABLE + uart_rgb_init(); +#endif + + // 85 REST + DDRD |= _BV(PD7); + PORTD |= _BV(PD7); + + // initialize row and col + init_rows(); + init_cols(); + + // 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 i = 0; i < MATRIX_ROWS; i++) { + select_row(i); + _delay_us(30); // without this wait read unstable value. + matrix_row_t cols = read_cols(); + if (matrix_debouncing[i] != cols) { + matrix_debouncing[i] = cols; + if (debouncing) { + debug("bounce!: "); debug_hex(debouncing); debug("\n"); + } + debouncing = DEBOUNCE; + } + unselect_rows(); + } + + if (debouncing) { + if (--debouncing) { + _delay_ms(1); + } else { + for (uint8_t i = 0; i < MATRIX_ROWS; i++) { + matrix[i] = matrix_debouncing[i]; + } + } + } + + return 1; +} + +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++) { + print_hex8(row); print(": "); + print_bin_reverse16(matrix_get_row(row)); + print("\n"); + } +} + +/* Column pin configuration + * col: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 + * pin: F7 F6 F5 F4 F1 F0 E6 D7 D6 D5 D1 D0 B7 B6 B0 C7 + * */ +static void init_cols(void) +{ + // Input with pull-up(DDR:0, PORT:1) + DDRF &= 0b00001100; + PORTF |= 0b11110011; + + DDRD &= 0b00011100; + PORTD |= 0b11100011; + + DDRB &= ~(_BV(PB6) | _BV(PB7)| _BV(PB0)); + PORTB |= (_BV(PB6) | _BV(PB7)| _BV(PB0)); + + DDRE &= ~_BV(PE6); + PORTE |= _BV(PE6); + + DDRC &= ~_BV(PC7); + PORTC |= _BV(PC7); + +} + +static matrix_row_t read_cols(void) +{ + + return (PINF&_BV(PF7) ? 0 : (1<<0)) | + (PINF&_BV(PF6) ? 0 : (1<<1)) | + (PINF&_BV(PF5) ? 0 : (1<<2)) | + (PINF&_BV(PF4) ? 0 : (1<<3)) | + (PINF&_BV(PF1) ? 0 : (1<<4)) | + (PINF&_BV(PF0) ? 0 : (1<<5)) | + (PINE&_BV(PE6) ? 0 : (1<<6)) | + (PIND&_BV(PD7) ? 0 : (1<<7)) | + (PIND&_BV(PD6) ? 0 : (1<<8)) | + (PIND&_BV(PD5) ? 0 : (1<<9)) | + (PIND&_BV(PD1) ? 0 : (1<<10)) | + (PIND&_BV(PD0) ? 0 : (1<<11)) | + (PINB&_BV(PB7) ? 0 : (1<<12)) | + (PINB&_BV(PB6) ? 0 : (1<<13)) | + (PINB&_BV(PB0) ? 0 : (1<<14)) | + (PINC&_BV(PC7) ? 0 : (1<<15)); +} + +/* Row pin configuration + * row: 0 1 2 3 4 5 x + * pin: B3 0 1 0 1 0 1 1 + * B2 0 0 1 1 0 0 1 + * B1 0 0 0 0 1 1 1 + */ + +static void init_rows(void) +{ + DDRB |= (1<<PB1 | 1<<PB2 | 1<<PB3); +} + +static void unselect_rows(void) +{ + // Hi-Z(DDR:0, PORT:0) to unselect + PORTB |= (1<<PB1); + PORTB |= (1<<PB2); + PORTB |= (1<<PB3); +} + +static void select_row(uint8_t row) +{ + // Output low(DDR:1, PORT:0) to select + (row & (1<<0)) ? (PORTB |= (1<<PB3)) : (PORTB &= ~(1<<PB3)); + (row & (1<<1)) ? (PORTB |= (1<<PB2)) : (PORTB &= ~(1<<PB2)); + (row & (1<<2)) ? (PORTB |= (1<<PB1)) : (PORTB &= ~(1<<PB1)); +} |