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- /*
- Copyright 2014 Warren Janssens <warren.janssens@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 "action_layer.h"
- #include "print.h"
- #include "debug.h"
- #include "util.h"
- #include "matrix.h"
- #include "led.h"
- #include "config.h"
-
- #ifndef DEBOUNCE
- # define DEBOUNCE 5
- #endif
- static uint8_t debouncing = DEBOUNCE;
-
- /* matrix state(1:on, 0:off) */
- static uint8_t matrix[MATRIX_ROWS];
- static uint8_t matrix_debouncing[MATRIX_ROWS];
-
- static matrix_row_t read_row(uint8_t row);
- static void unselect_rows(void);
- static void select_rows(uint8_t row);
-
-
- __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) {
- }
-
- inline
- uint8_t matrix_rows(void)
- {
- return MATRIX_ROWS;
- }
-
-
- inline
- uint8_t matrix_cols(void)
- {
- return MATRIX_COLS;
- }
-
- void matrix_init(void)
- {
- //debug_enable = true;
-
- //dprint("matrix_init"); dprintln();
- // output high (leds)
- DDRD = 0xFF;
- PORTD = 0xFF;
-
- // output low (multiplexers)
- DDRF = 0xFF;
- PORTF = 0x00;
-
- // input with pullup (matrix)
- DDRB = 0x00;
- PORTB = 0xFF;
-
- // input with pullup (program and keypad buttons)
- DDRC = 0x00;
- PORTC = 0xFF;
-
- // initialize row and col
- unselect_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 i = 0; i < MATRIX_ROWS; i++) {
- select_rows(i);
- uint8_t row = read_row(i);
- if (matrix_debouncing[i] != row) {
- matrix_debouncing[i] = row;
- 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];
- }
- }
- }
- matrix_scan_quantum();
- 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 01234567\n");
- for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
- print_hex8(row); print(": ");
- print_bin_reverse8(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;
- }
-
- static matrix_row_t read_row(uint8_t row)
- {
- _delay_us(30); // without this wait read unstable value.
-
- //keypad and program buttons
- if (row == 12)
- {
- return ~(PINC | 0b00111111);
- }
- return ~PINB;
- }
-
- static void unselect_rows(void)
- {
- // set A,B,C,G to 0 (F4 - F7)
- PORTF &= 0x0F;
- }
-
- static void select_rows(uint8_t row)
- {
- // set A,B,C,G to row value
- PORTF |= row << 4;
- }
-
-
- /* Row pin configuration
- PF0 A
- PF1 B
- PF2 C
- PF3 G 0 = U4, 1 = U5
-
- 4y0 4y1 4y2 4y3 4y4 4y5 4y6 4y7 5y0 5y1 5y2 5y3 5y4 5y5 5y6 5y7
- r1 r2 r3 r4 r5 r6 r7 r8 r9 r10 r11 r12 r13 r14 r15 r16
- PB0 21 c1 f6 f8 f7 5 4 3 2 1 =+
- PB1 22 c2 f3 f5 f4 t r e w q TAB
- PB2 23 c3 ESC f2 f1 g f d s a CL
- PB3 24 c4 f9 f11 f10 b v c x z LS UP DN [{ ]}
- PB4 25 c5 f12 SL PS RT LT §± `~ 6 7 8 9 0 -_
- PB5 26 c6 PB PGM KPD y u i o p \
- PB6 27 c7 LC DL BS RC EN SP h j k l ;: '"
- PB7 28 c8 RA PU PD n m ,< .> /? RS
- */
-
-
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