258 lines
6.3 KiB
C
258 lines
6.3 KiB
C
/*
|
|
Copyright 2017 MechMerlin <mechmerlin@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/>.
|
|
*/
|
|
|
|
#include <util/delay.h>
|
|
#include <avr/io.h>
|
|
#include <stdio.h>
|
|
#include "matrix.h"
|
|
#include "util.h"
|
|
#include "print.h"
|
|
#include "debug.h"
|
|
|
|
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 uint8_t read_rows(uint8_t col);
|
|
static void init_rows(void);
|
|
static void unselect_cols(void);
|
|
static void select_col(uint8_t col);
|
|
|
|
|
|
__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) {
|
|
}
|
|
|
|
void backlight_init_ports(void)
|
|
{
|
|
DDRD |= 0b11010000;
|
|
PORTD &= ~0b01010000;
|
|
PORTD |= 0b10000000;
|
|
DDRB |= 0b00011111;
|
|
PORTB &= ~0b00001110;
|
|
PORTB |= 0b00010001;
|
|
DDRE |= 0b01000000;
|
|
PORTE &= ~0b01000000;
|
|
}
|
|
|
|
void matrix_init(void) {
|
|
backlight_init_ports();
|
|
unselect_cols();
|
|
init_rows();
|
|
|
|
for (uint8_t i=0; i < MATRIX_ROWS; i++) {
|
|
matrix[i] = 0;
|
|
matrix_debouncing[i] = 0;
|
|
}
|
|
|
|
matrix_init_quantum();
|
|
}
|
|
|
|
uint8_t matrix_scan(void) {
|
|
for (uint8_t col = 0; col < MATRIX_COLS; col++) {
|
|
select_col(col);
|
|
_delay_us(3);
|
|
|
|
uint8_t rows = read_rows(col);
|
|
|
|
for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
|
|
bool prev_bit = matrix_debouncing[row] & ((matrix_row_t)1<<col);
|
|
bool curr_bit = rows & (1<<row);
|
|
if (prev_bit != curr_bit) {
|
|
matrix_debouncing[row] ^= ((matrix_row_t)1<<col);
|
|
if (debouncing) {
|
|
dprint("bounce!: "); dprintf("%02X", debouncing); dprintln();
|
|
}
|
|
debouncing = DEBOUNCE;
|
|
}
|
|
}
|
|
unselect_cols();
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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++) {
|
|
xprintf("%02X: %032lb\n", row, bitrev32(matrix_get_row(row)));
|
|
}
|
|
}
|
|
|
|
/* Row pin configuration - diode connected
|
|
* row: 0 1 2 3 4
|
|
* pin: PD0 PD1 PD2 PD3 PD5
|
|
*
|
|
* Caps Lock uses its own pin PE2 on the column pin, row pin is grounded
|
|
*/
|
|
static void init_rows(void) {
|
|
DDRD &= ~0b00101111;
|
|
PORTD &= ~0b00101111;
|
|
|
|
DDRE &= ~0b00000100;
|
|
PORTE |= 0b00000100;
|
|
}
|
|
|
|
static uint8_t read_rows(uint8_t col) {
|
|
|
|
return (PIND&(1<<0) ? (1<<0) : 0) |
|
|
(PIND&(1<<1) ? (1<<1) : 0) |
|
|
(PIND&(1<<2) ? (1<<2) : 0) |
|
|
(PIND&(1<<3) ? (1<<3) : 0) |
|
|
(PIND&(1<<5) ? (1<<4) : 0) |
|
|
(col==0 ? ((PINE&(1<<2) ? 0 : (1<<2))) : 0);
|
|
|
|
}
|
|
|
|
uint8_t read_fwkey(void)
|
|
{
|
|
return PINE&(1<<2) ? 0 : (1<<2);
|
|
}
|
|
|
|
/* Columns 0 - 15
|
|
*
|
|
* atmega32u4 decoder pin
|
|
* PC6 U1 E3
|
|
* PB6 U2 E3
|
|
* PF0 U1, U2 A0
|
|
* PF1 U1, U2 A1
|
|
* PC7 U1, U2 A2
|
|
*
|
|
* These columns uses two 74HC237D 3 to 8 bit demultiplexers.
|
|
* col / pin: PC6 PB6 PF0 PF1 PC7 Decoder Pin
|
|
* 0: 1 0 0 0 0 U1 Y0
|
|
* 1: 1 0 1 0 0 U1 Y1
|
|
* 2: 1 0 0 1 0 U1 Y2
|
|
* 3: 1 0 1 1 0 U1 Y3
|
|
* 4: 1 0 0 0 1 U1 Y4
|
|
* 5: 1 0 1 0 1 U1 Y5
|
|
* 6: 1 0 0 1 1 U1 Y6
|
|
* 7: 1 0 1 1 1 U1 Y7
|
|
* 8: 0 1 0 0 0 U2 Y0
|
|
* 9: 0 1 1 0 0 U2 Y1
|
|
* 10: 0 1 0 1 0 U2 Y2
|
|
* 11: 0 1 1 1 0 U2 Y3
|
|
* 12: 0 1 0 0 1 U2 Y4
|
|
* 13: 0 1 1 0 1 U2 Y5
|
|
* 14: 0 1 0 1 1 U2 Y6
|
|
*
|
|
*/
|
|
static void unselect_cols(void) {
|
|
DDRB |= 0b01000000;
|
|
PORTB &= ~0b01000000;
|
|
|
|
DDRC |= 0b11000000;
|
|
PORTC &= ~0b11000000;
|
|
|
|
DDRF |= 0b00000011;
|
|
PORTF &= ~0b00000011;
|
|
}
|
|
|
|
static void select_col(uint8_t col) {
|
|
|
|
switch (col) {
|
|
case 0:
|
|
PORTC |= 0b01000000;
|
|
break;
|
|
case 1:
|
|
PORTC |= 0b01000000;
|
|
PORTF |= 0b00000001;
|
|
break;
|
|
case 2:
|
|
PORTC |= 0b01000000;
|
|
PORTF |= 0b00000010;
|
|
break;
|
|
case 3:
|
|
PORTC |= 0b01000000;
|
|
PORTF |= 0b00000011;
|
|
break;
|
|
case 4:
|
|
PORTC |= 0b11000000;
|
|
break;
|
|
case 5:
|
|
PORTC |= 0b11000000;
|
|
PORTF |= 0b00000001;
|
|
break;
|
|
case 6:
|
|
PORTC |= 0b11000000;
|
|
PORTF |= 0b00000010;
|
|
break;
|
|
case 7:
|
|
PORTC |= 0b11000000;
|
|
PORTF |= 0b00000011;
|
|
break;
|
|
case 8:
|
|
PORTB |= 0b01000000;
|
|
break;
|
|
case 9:
|
|
PORTB |= 0b01000000;
|
|
PORTF |= 0b00000001;
|
|
break;
|
|
case 10:
|
|
PORTB |= 0b01000000;
|
|
PORTF |= 0b00000010;
|
|
break;
|
|
case 11:
|
|
PORTB |= 0b01000000;
|
|
PORTF |= 0b00000011;
|
|
break;
|
|
case 12:
|
|
PORTB |= 0b01000000;
|
|
PORTC |= 0b10000000;
|
|
break;
|
|
case 13:
|
|
PORTB |= 0b01000000;
|
|
PORTF |= 0b00000001;
|
|
PORTC |= 0b10000000;
|
|
break;
|
|
case 14:
|
|
PORTB |= 0b01000000;
|
|
PORTF |= 0b00000010;
|
|
PORTC |= 0b10000000;
|
|
break;
|
|
}
|
|
}
|