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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 <[email protected]> + +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)); +} | 
