260 lines
6.9 KiB
C
260 lines
6.9 KiB
C
/*
|
|
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"
|
|
|
|
#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 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)
|
|
{
|
|
// disable JTAG
|
|
MCUCR = (1<<JTD);
|
|
MCUCR = (1<<JTD);
|
|
|
|
// initialize row and col
|
|
unselect_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;
|
|
}
|
|
|
|
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 0123456789ABCDEF\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
|
|
* pin: D17 D15 A0 A1 A2 A3 (arduino) REV_V2
|
|
* PB3 PB1 PF7 PF6 PF5 PF4
|
|
* PF0 PF1 PF4 PF5 PF6 PF7 REV_V3
|
|
*/
|
|
static void init_cols(void)
|
|
{
|
|
// Input with pull-up(DDR:0, PORT:1)
|
|
#if defined(REV_V2)
|
|
DDRF &= ~(1<<PF7 | 1<<PF6 | 1<<PF5 | 1<<PF4);
|
|
PORTF |= (1<<PF7 | 1<<PF6 | 1<<PF5 | 1<<PF4);
|
|
DDRB &= ~(1<<PB3 | 1<<PB1);
|
|
PORTB |= (1<<PB3 | 1<<PB1);
|
|
#elif defined(REV_V3)
|
|
DDRF &= ~(1<<PF0 | 1<<PF1 | 1<<PF4 | 1<<PF5 | 1<<PF6 | 1<<PF7);
|
|
PORTF |= (1<<PF0 | 1<<PF1 | 1<<PF4 | 1<<PF5 | 1<<PF6 | 1<<PF7);
|
|
#endif
|
|
}
|
|
|
|
static matrix_row_t read_cols(void)
|
|
{
|
|
#if defined(REV_V2)
|
|
return (PINB&(1<<PB3) ? 0 : (1<<0)) |
|
|
(PINB&(1<<PB1) ? 0 : (1<<1)) |
|
|
(PINF&(1<<PF7) ? 0 : (1<<2)) |
|
|
(PINF&(1<<PF6) ? 0 : (1<<3)) |
|
|
(PINF&(1<<PF5) ? 0 : (1<<4)) |
|
|
(PINF&(1<<PF4) ? 0 : (1<<5));
|
|
#elif defined(REV_V3)
|
|
//return ((~(PINF) >> 4) & 0x0F) | (~(PINF) & (1<<PF0 | 1<<PF1));
|
|
return (~(PINF) & 0b00000011) | ((~(PINF) >> 2) & 0b00111100);
|
|
#endif
|
|
}
|
|
|
|
static void unselect_rows(void)
|
|
{
|
|
#if defined(REV_V2)
|
|
// Hi-Z(DDR:0, PORT:0) to unselect
|
|
DDRB &= ~(1<<PB4);
|
|
PORTB &= ~(1<<PB4);
|
|
DDRD &= ~(1<<PD7);
|
|
PORTD &= ~(1<<PD7);
|
|
DDRE &= ~(1<<PE6);
|
|
PORTE &= ~(1<<PE6);
|
|
// Select 0
|
|
DDRD |= (1<<PD3 | 1<<PD2 | 1<<PD0);
|
|
PORTD &= ~(1<<PD3 | 1<<PD2 | 1<<PD0);
|
|
DDRC |= (1<<PC6);
|
|
PORTC &= ~(1<<PC6);
|
|
#elif defined(REV_V3)
|
|
// Hi-Z(DDR:0, PORT:0) to unselect
|
|
DDRB &= ~(1<<PB4 | 1<<PB5 | 1<<PB6);
|
|
PORTB &= ~(1<<PB4 | 1<<PB5 | 1<<PB6);
|
|
// Select 0
|
|
DDRD |= (1<<PD4 | 1<<PD5 | 1<<PD6 | 1<<PD7);
|
|
PORTD &= ~(1<<PD4 | 1<<PD5 | 1<<PD6 | 1<<PD7);
|
|
#endif
|
|
}
|
|
|
|
/* Row pin configuration
|
|
* row: x 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
|
|
*
|
|
* pin: D8 PB4 - 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 \
|
|
* / TX PD3 0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 0 |
|
|
* | RX PD2 0 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 |
|
|
* | D3 PD0 0 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 |- REV_V2
|
|
* \ D5 PC6 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 |
|
|
* D6 PD7 - 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 1 |
|
|
* D7 PE6 - 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 /
|
|
*
|
|
* PB4 - 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 \
|
|
* / PD4 0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 0 |
|
|
* | PD5 0 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 |
|
|
* | PD6 0 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 |- REV_V3
|
|
* \ PD7 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 |
|
|
* PB5 - 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 1 |
|
|
* PB6 - 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 /
|
|
*
|
|
*/
|
|
static void select_row(uint8_t row)
|
|
{
|
|
#if defined(REV_V2)
|
|
// Output low(DDR:1, PORT:0) to select
|
|
if (row == 0) {
|
|
DDRB |= (1<<PB4);
|
|
PORTB &= ~(1<<PB4);
|
|
}
|
|
else if (row < 16) {
|
|
(row & (1<<0)) ? (PORTD |= (1<<PD3)) : (PORTD &= ~(1<<PD3));
|
|
(row & (1<<1)) ? (PORTD |= (1<<PD2)) : (PORTD &= ~(1<<PD2));
|
|
(row & (1<<2)) ? (PORTD |= (1<<PD0)) : (PORTD &= ~(1<<PD0));
|
|
(row & (1<<3)) ? (PORTC |= (1<<PC6)) : (PORTC &= ~(1<<PC6));
|
|
}
|
|
else if (row == 16) {
|
|
DDRD |= (1<<PD7);
|
|
PORTD &= ~(1<<PD7);
|
|
}
|
|
else if (row == 17) {
|
|
DDRE |= (1<<PE6);
|
|
PORTE &= ~(1<<PE6);
|
|
}
|
|
#elif defined(REV_V3)
|
|
// Output low(DDR:1, PORT:0) to select
|
|
if (row == 0) {
|
|
DDRB |= (1<<PB4);
|
|
PORTB &= ~(1<<PB4);
|
|
}
|
|
else if (row < 16) {
|
|
PORTD = (PORTD & 0x0F) | ((row & 0x0F) << 4);
|
|
}
|
|
else if (row == 16) {
|
|
DDRB |= (1<<PB5);
|
|
PORTB &= ~(1<<PB5);
|
|
}
|
|
else if (row == 17) {
|
|
DDRB |= (1<<PB6);
|
|
PORTB &= ~(1<<PB6);
|
|
}
|
|
#endif
|
|
}
|