diff options
author | tmk <nobody@nowhere> | 2012-12-27 02:41:32 +0900 |
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committer | tmk <nobody@nowhere> | 2012-12-27 02:41:32 +0900 |
commit | c009f4643c17084b8f632b3292e0c7962b324ae5 (patch) | |
tree | 10490ca64f2ee8cbe6d5f6531c954826f2c4756e /keyboard/gh60/matrix.c | |
parent | 6ebe99f37c15c80c36d942e581794dc0cf3b68a4 (diff) |
Added Initial files for gh60.
Diffstat (limited to 'keyboard/gh60/matrix.c')
-rw-r--r-- | keyboard/gh60/matrix.c | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/keyboard/gh60/matrix.c b/keyboard/gh60/matrix.c new file mode 100644 index 0000000000..4c18a61912 --- /dev/null +++ b/keyboard/gh60/matrix.c @@ -0,0 +1,225 @@ +/* +Copyright 2012 Jun Wako <wakojun@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" + + +#ifndef DEBOUNCE +# define DEBOUNCE 5 +#endif +static uint8_t debouncing = DEBOUNCE; + +// matrix state buffer(1:on, 0:off) +static uint16_t *matrix; +static uint16_t *matrix_prev; +static uint16_t _matrix0[MATRIX_ROWS]; +static uint16_t _matrix1[MATRIX_ROWS]; + +static uint16_t read_cols(void); +static void init_cols(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) +{ + // initialize row and col + unselect_rows(); + init_cols(); + + // initialize matrix state: all keys off + for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix0[i] = 0; + for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix1[i] = 0; + matrix = _matrix0; + matrix_prev = _matrix1; +} + +uint8_t matrix_scan(void) +{ + if (!debouncing) { + uint16_t *tmp = matrix_prev; + matrix_prev = matrix; + matrix = tmp; + } + + for (uint8_t i = 0; i < MATRIX_ROWS; i++) { + unselect_rows(); + select_row(i); + _delay_us(1); // without this wait read unstable value. + uint16_t cols = ~read_cols(); + if (matrix[i] != cols) { + matrix[i] = cols; + if (debouncing) { + debug("bounce!: "); debug_hex(debouncing); print("\n"); + } + debouncing = DEBOUNCE; + } + } + unselect_rows(); + + if (debouncing) { + debouncing--; + _delay_ms(1); // improved affect on bouncing + } + + return 1; +} + +bool matrix_is_modified(void) +{ + if (debouncing) return false; + for (uint8_t i = 0; i < MATRIX_ROWS; i++) { + if (matrix[i] != matrix_prev[i]) { + return true; + } + } + return false; +} + +inline +bool matrix_has_ghost(void) +{ + return false; +} + +inline +bool matrix_is_on(uint8_t row, uint8_t col) +{ + return (matrix[row] & (1<<col)); +} + +inline +uint16_t matrix_get_row(uint8_t row) +{ + return matrix[row]; +} + +void matrix_print(void) +{ + print("\nr/c 01234567\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; +} + +/* Column pin configuration + * col: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 + * pin: F0 F1 E6 C7 C6 B6 D4 B1 B0 B5 B4 D7 D6 B3 + */ +static void init_cols(void) +{ + // Input with pull-up(DDR:0, PORT:1) + DDRF &= ~(1<<0 | 1<<1); + PORTF |= (1<<0 | 1<<1); + DDRE &= ~(1<<6); + PORTE |= (1<<6); + DDRD &= ~(1<<7 | 1<<6 | 1<<4); + PORTD |= (1<<7 | 1<<6 | 1<<4); + DDRC &= ~(1<<7 | 1<<6); + PORTC |= (1<<7 | 1<<6); + DDRB &= ~(1<<6 | 1<< 5 | 1<<4 | 1<<3 | 1<<1 | 1<<0); + PORTB |= (1<<6 | 1<< 5 | 1<<4 | 1<<3 | 1<<1 | 1<<0); +} + +static uint16_t read_cols(void) +{ + return (PINF&(1<<0) ? (1<<0) : 0) | + (PINF&(1<<1) ? (1<<1) : 0) | + (PINE&(1<<6) ? (1<<2) : 0) | + (PINC&(1<<7) ? (1<<3) : 0) | + (PINC&(1<<6) ? (1<<4) : 0) | + (PINB&(1<<6) ? (1<<5) : 0) | + (PIND&(1<<4) ? (1<<6) : 0) | + (PINB&(1<<1) ? (1<<7) : 0) | + (PINB&(1<<0) ? (1<<8) : 0) | + (PINB&(1<<5) ? (1<<9) : 0) | + (PINB&(1<<4) ? (1<<10) : 0) | + (PIND&(1<<7) ? (1<<11) : 0) | + (PIND&(1<<6) ? (1<<12) : 0) | + (PINB&(1<<3) ? (1<<13) : 0); +} + +/* Row pin configuration + * row: 0 1 2 3 4 + * pin: D0 D1 D2 D3 D5 + */ +static void unselect_rows(void) +{ + // Hi-Z(DDR:0, PORT:0) to unselect + DDRD &= ~0b00101111; + PORTD &= ~0b00101111; +} + +static void select_row(uint8_t row) +{ + // Output low(DDR:1, PORT:0) to select + switch (row) { + case 0: + DDRD |= (1<<0); + PORTD &= ~(1<<0); + break; + case 1: + DDRD |= (1<<1); + PORTD &= ~(1<<1); + break; + case 2: + DDRD |= (1<<2); + PORTD &= ~(1<<2); + break; + case 3: + DDRD |= (1<<3); + PORTD &= ~(1<<3); + break; + case 4: + DDRD |= (1<<5); + PORTD &= ~(1<<5); + break; + } +} |