205 lines
4.2 KiB
C
205 lines
4.2 KiB
C
/*
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Copyright 2014 Warren Janssens <warren.janssens@gmail.com>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* scan matrix
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*/
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#include <stdint.h>
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#include <stdbool.h>
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#include <avr/io.h>
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#include <util/delay.h>
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#include "action_layer.h"
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#include "print.h"
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#include "debug.h"
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#include "util.h"
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#include "matrix.h"
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#include "led.h"
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#include "config.h"
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#ifndef DEBOUNCE
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# define DEBOUNCE 5
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#endif
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static uint8_t debouncing = DEBOUNCE;
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/* matrix state(1:on, 0:off) */
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static uint8_t matrix[MATRIX_ROWS];
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static uint8_t matrix_debouncing[MATRIX_ROWS];
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static matrix_row_t read_row(uint8_t row);
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static void unselect_rows(void);
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static void select_rows(uint8_t row);
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__attribute__ ((weak))
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void matrix_init_kb(void) {
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matrix_init_user();
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}
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__attribute__ ((weak))
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void matrix_scan_kb(void) {
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matrix_scan_user();
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}
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__attribute__ ((weak))
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void matrix_init_user(void) {
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}
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__attribute__ ((weak))
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void matrix_scan_user(void) {
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}
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inline
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uint8_t matrix_rows(void)
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{
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return MATRIX_ROWS;
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}
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inline
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uint8_t matrix_cols(void)
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{
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return MATRIX_COLS;
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}
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void matrix_init(void)
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{
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//debug_enable = true;
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//dprint("matrix_init"); dprintln();
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// output high (leds)
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DDRD = 0xFF;
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PORTD = 0xFF;
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// output low (multiplexers)
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DDRF = 0xFF;
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PORTF = 0x00;
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// input with pullup (matrix)
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DDRB = 0x00;
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PORTB = 0xFF;
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// input with pullup (program and keypad buttons)
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DDRC = 0x00;
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PORTC = 0xFF;
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// initialize row and col
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unselect_rows();
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// initialize matrix state: all keys off
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for (uint8_t i=0; i < MATRIX_ROWS; i++) {
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matrix[i] = 0;
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matrix_debouncing[i] = 0;
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}
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}
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uint8_t matrix_scan(void)
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{
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for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
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select_rows(i);
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uint8_t row = read_row(i);
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if (matrix_debouncing[i] != row) {
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matrix_debouncing[i] = row;
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if (debouncing) {
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debug("bounce!: "); debug_hex(debouncing); debug("\n");
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}
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debouncing = DEBOUNCE;
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}
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unselect_rows();
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}
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if (debouncing) {
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if (--debouncing) {
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_delay_ms(1);
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} else {
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for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
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matrix[i] = matrix_debouncing[i];
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}
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}
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}
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matrix_scan_quantum();
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return 1;
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}
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inline
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bool matrix_is_on(uint8_t row, uint8_t col)
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{
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return (matrix[row] & ((matrix_row_t)1<<col));
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}
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inline
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matrix_row_t matrix_get_row(uint8_t row)
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{
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return matrix[row];
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}
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void matrix_print(void)
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{
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print("\nr/c 01234567\n");
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for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
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print_hex8(row); print(": ");
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print_bin_reverse8(matrix_get_row(row));
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print("\n");
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}
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}
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static matrix_row_t read_row(uint8_t row)
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{
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_delay_us(30); // without this wait read unstable value.
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//keypad and program buttons
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if (row == 12)
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{
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return ~(PINC | 0b00111111);
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}
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return ~PINB;
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}
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static void unselect_rows(void)
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{
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// set A,B,C,G to 0 (F4 - F7)
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PORTF &= 0x0F;
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}
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static void select_rows(uint8_t row)
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{
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// set A,B,C,G to row value
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PORTF |= row << 4;
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}
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/* Row pin configuration
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PF0 A
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PF1 B
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PF2 C
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PF3 G 0 = U4, 1 = U5
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4y0 4y1 4y2 4y3 4y4 4y5 4y6 4y7 5y0 5y1 5y2 5y3 5y4 5y5 5y6 5y7
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r1 r2 r3 r4 r5 r6 r7 r8 r9 r10 r11 r12 r13 r14 r15 r16
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PB0 21 c1 f6 f8 f7 5 4 3 2 1 =+
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PB1 22 c2 f3 f5 f4 t r e w q TAB
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PB2 23 c3 ESC f2 f1 g f d s a CL
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PB3 24 c4 f9 f11 f10 b v c x z LS UP DN [{ ]}
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PB4 25 c5 f12 SL PS RT LT §± `~ 6 7 8 9 0 -_
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PB5 26 c6 PB PGM KPD y u i o p \
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PB6 27 c7 LC DL BS RC EN SP h j k l ;: '"
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PB7 28 c8 RA PU PD n m ,< .> /? RS
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*/
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