mirror of
https://github.com/qmk/qmk_firmware.git
synced 2024-12-18 15:43:23 +00:00
364 lines
9.0 KiB
C
364 lines
9.0 KiB
C
/*
|
|
Copyright 2011 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"
|
|
#include "led.h"
|
|
|
|
|
|
#if (MATRIX_COLS > 16)
|
|
# error "MATRIX_COLS must not exceed 16"
|
|
#endif
|
|
#if (MATRIX_ROWS > 255)
|
|
# error "MATRIX_ROWS must not exceed 255"
|
|
#endif
|
|
|
|
|
|
#ifndef DEBOUNCE
|
|
# define DEBOUNCE 0
|
|
#endif
|
|
static uint8_t debouncing = DEBOUNCE;
|
|
|
|
// matrix state buffer(1:on, 0:off)
|
|
#if (MATRIX_COLS <= 8)
|
|
static uint8_t *matrix;
|
|
static uint8_t *matrix_prev;
|
|
static uint8_t _matrix0[MATRIX_ROWS];
|
|
static uint8_t _matrix1[MATRIX_ROWS];
|
|
#else
|
|
static uint16_t *matrix;
|
|
static uint16_t *matrix_prev;
|
|
static uint16_t _matrix0[MATRIX_ROWS];
|
|
static uint16_t _matrix1[MATRIX_ROWS];
|
|
#endif
|
|
|
|
#ifdef MATRIX_HAS_GHOST
|
|
static bool matrix_has_ghost_in_row(uint8_t row);
|
|
#endif
|
|
static uint8_t read_col(uint8_t row);
|
|
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();
|
|
// Input with pull-up(DDR:0, PORT:1)
|
|
// Column C1 ~ C7 (PortC0-6)
|
|
// Column C0(Port E1)
|
|
DDRC &= ~0b01111111;
|
|
PORTC |= 0b01111111;
|
|
DDRE &= ~0b00000010;
|
|
PORTE |= 0b00000010;
|
|
//DDRB &= ~0b00000100;
|
|
//PORTB |= 0b00000100;
|
|
// modifier B3/4,F4/5,E4 always input
|
|
// A0
|
|
//DDRA |= 0b00000001;
|
|
//PORTA &= 0b00000001;
|
|
//DDRB |= 0b00011000;
|
|
//PORTB &= 0b00011000;
|
|
//DDRF |= ~0b00110000;
|
|
//PORTF &= 0b00110000;
|
|
//DDRB &= ~0b00011000;
|
|
//PORTB |= 0b00011000;
|
|
//DDRF &= ~0b00110000;
|
|
//PORTF |= 0b00110000;
|
|
//DDRE &= ~0b00010000;
|
|
//PORTE |= 0b00010000;
|
|
|
|
// initialize matrix state: all keys off
|
|
for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix0[i] = 0x00;
|
|
for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix1[i] = 0x00;
|
|
matrix = _matrix0;
|
|
matrix_prev = _matrix1;
|
|
}
|
|
|
|
uint8_t matrix_scan(void)
|
|
{
|
|
if (!debouncing) {
|
|
uint8_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(30); // without this wait read unstable value.
|
|
if ( i == ( MATRIX_ROWS - 1 ) ) { // CHECK CAPS LOCK
|
|
if (host_keyboard_leds() & (1<<USB_LED_CAPS_LOCK)) { // CAPS LOCK is ON on HOST
|
|
if ( ~read_col(i) & (1<< 4) ) { // CAPS LOCK is still DOWN ( 0bXXX1_XXXX)
|
|
matrix[i] = ~read_col(i) & 0b11101111; // change CAPS LOCK as released
|
|
} else { // CAPS LOCK in UP
|
|
matrix[i] = ~read_col(i) | 0b00010000; // send fake caps lock down
|
|
}
|
|
} else { // CAPS LOCK is OFF on HOST
|
|
if (matrix[i] != (uint8_t)~read_col(i)) {
|
|
matrix[i] = (uint8_t)~read_col(i);
|
|
if (debouncing) {
|
|
debug("bounce!: "); debug_hex(debouncing); print("\n");
|
|
}
|
|
debouncing = DEBOUNCE;
|
|
}
|
|
}
|
|
} else {
|
|
if (matrix[i] != (uint8_t)~read_col(i)) {
|
|
matrix[i] = (uint8_t)~read_col(i);
|
|
if (debouncing) {
|
|
debug("bounce!: "); debug_hex(debouncing); print("\n");
|
|
}
|
|
debouncing = DEBOUNCE;
|
|
}
|
|
}
|
|
}
|
|
unselect_rows();
|
|
|
|
if (debouncing) {
|
|
debouncing--;
|
|
}
|
|
|
|
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)
|
|
{
|
|
#ifdef MATRIX_HAS_GHOST
|
|
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
|
|
if (matrix_has_ghost_in_row(i))
|
|
return true;
|
|
}
|
|
#endif
|
|
return false;
|
|
}
|
|
|
|
inline
|
|
bool matrix_is_on(uint8_t row, uint8_t col)
|
|
{
|
|
// if ( row == ( MATRIX_ROWS - 1 ) && col == 4) { // CHECK CAPS LOCK
|
|
// if (host_keyboard_leds() & (1<<USB_LED_CAPS_LOCK)) { // CAPS LOCK is ON on HOST
|
|
// if ((matrix_prev[row] & 0b00010000) && (~matrix[row] & 0b00010000)) {
|
|
// debug("CapsLock Reverse:");debug_hex(matrix[row]);
|
|
// matrix[row] |= 0b00010000;
|
|
// matrix_prev[row] &= ~0b00010000;
|
|
// debug("->");debug_hex(matrix[row]);debug("\n");
|
|
// }
|
|
// }
|
|
// }
|
|
return (matrix[row] & (1<<col));
|
|
}
|
|
|
|
inline
|
|
#if (MATRIX_COLS <= 8)
|
|
uint8_t matrix_get_row(uint8_t row)
|
|
#else
|
|
uint16_t matrix_get_row(uint8_t row)
|
|
#endif
|
|
{
|
|
return matrix[row];
|
|
}
|
|
|
|
void matrix_print(void)
|
|
{
|
|
print("\nr/c 01234567\n");
|
|
for (uint8_t row = 0; row < matrix_rows(); row++) {
|
|
phex(row); print(": ");
|
|
#if (MATRIX_COLS <= 8)
|
|
pbin_reverse(matrix_get_row(row));
|
|
#else
|
|
pbin_reverse16(matrix_get_row(row));
|
|
#endif
|
|
#ifdef MATRIX_HAS_GHOST
|
|
if (matrix_has_ghost_in_row(row)) {
|
|
print(" <ghost");
|
|
}
|
|
#endif
|
|
print("\n");
|
|
}
|
|
}
|
|
|
|
uint8_t matrix_key_count(void)
|
|
{
|
|
uint8_t count = 0;
|
|
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
|
|
#if (MATRIX_COLS <= 8)
|
|
count += bitpop(matrix[i]);
|
|
#else
|
|
count += bitpop16(matrix[i]);
|
|
#endif
|
|
}
|
|
return count;
|
|
}
|
|
|
|
#ifdef MATRIX_HAS_GHOST
|
|
inline
|
|
static bool matrix_has_ghost_in_row(uint8_t row)
|
|
{
|
|
// no ghost exists in case less than 2 keys on
|
|
if (((matrix[row] - 1) & matrix[row]) == 0)
|
|
return false;
|
|
|
|
// ghost exists in case same state as other row
|
|
for (uint8_t i=0; i < MATRIX_ROWS; i++) {
|
|
if (i != row && (matrix[i] & matrix[row]) == matrix[row])
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
#endif
|
|
|
|
inline
|
|
static uint8_t read_col(uint8_t row)
|
|
{
|
|
// For normal : Column C1 ~ C7 (PortC0-6), C0(Port E1)
|
|
// For modifier : B3(CNTRL)/4(SHIFT),F4(CMD/GUI)/5(OPTION,ALT)
|
|
// Modifier would be copied to report->mods except E4(CAPSLOCK)
|
|
uint8_t tmp;
|
|
if ( row == 10 ) {
|
|
tmp = 0xC0;
|
|
tmp |= (PINB >> 3 ) & 0b00000011; // LEFT CTRL is 0bit in modifier (HID Spec)
|
|
// LEFT SHIFT is 1bit in modifier (HID Spec)
|
|
tmp |= (PINF >> 3 ) & 0b00000100; // LEFT ALT is 2bit in modifier (HID Spec)
|
|
tmp |= (PINF >> 1 ) & 0b00001000; // LEFT GUI is 3bit in modifier (HID Spec)
|
|
tmp |= (PINA << 4 ) & 0b00010000; // CAPSLOCK
|
|
tmp |= (PINB << 3 ) & 0b00100000; // POWER
|
|
} else {
|
|
tmp = 0x00;
|
|
tmp = (PINE >> 1)&0b00000001;
|
|
tmp |= PINC << 1 ;
|
|
}
|
|
return tmp;
|
|
}
|
|
|
|
inline
|
|
static void unselect_rows(void)
|
|
{
|
|
// Hi-Z(DDR:0, PORT:0) to unselect
|
|
// DDR : 1, output 0, input
|
|
DDRB &= ~0b00000011; // PB: 1,0
|
|
PORTB &= ~0b00000011;
|
|
DDRD &= ~0b00010000; // PD: 4
|
|
PORTD &= ~0b00010000;
|
|
DDRE &= ~0b11000000; // PE: 7,6
|
|
PORTE &= ~0b11000000;
|
|
DDRF &= ~0b11000111; // PF: 7,6,2,1,0
|
|
PORTF &= ~0b11000111;
|
|
// to unselect virtual row(modifier), set port to output with low
|
|
DDRA |= 0b00000001; // PA: 0 for CAPSLOCK
|
|
PORTA &= ~0b00000001;
|
|
DDRB |= 0b00011100; // PB: 3,4 for modifier(row10)
|
|
PORTB &= ~0b00011100; // PB: 2 for power
|
|
DDRF |= 0b00110000; // PF: 4,5 for modifier
|
|
PORTF &= ~0b00110000;
|
|
}
|
|
|
|
inline
|
|
static void select_row(uint8_t row)
|
|
{
|
|
// Output low(DDR:1, PORT:0) to select
|
|
// with row enable, column could send low to AVR when pressed
|
|
// row: 0 1 2 3 4 5 6 7 8 9
|
|
// pin: PB1, PB0, PE7, PE6, PD4, PF2, PF0, PF1, PF6 PF7
|
|
switch (row) {
|
|
case 0:
|
|
DDRB |= (1<<1);
|
|
PORTB &= ~(1<<1);
|
|
break;
|
|
case 1:
|
|
DDRB |= (1<<0);
|
|
PORTB &= ~(1<<0);
|
|
break;
|
|
case 2:
|
|
DDRE |= (1<<7);
|
|
PORTE &= ~(1<<7);
|
|
break;
|
|
case 3:
|
|
DDRE |= (1<<6);
|
|
PORTE &= ~(1<<6);
|
|
break;
|
|
case 4:
|
|
DDRD |= (1<<4);
|
|
PORTD &= ~(1<<4);
|
|
break;
|
|
case 5:
|
|
DDRF |= (1<<2);
|
|
PORTF &= ~(1<<2);
|
|
break;
|
|
case 6:
|
|
DDRF |= (1<<0);
|
|
PORTF &= ~(1<<0);
|
|
break;
|
|
case 7:
|
|
DDRF |= (1<<1);
|
|
PORTF &= ~(1<<1);
|
|
break;
|
|
case 8:
|
|
DDRF |= (1<<6);
|
|
PORTF &= ~(1<<6);
|
|
break;
|
|
case 9:
|
|
DDRF |= (1<<7);
|
|
PORTF &= ~(1<<7);
|
|
break;
|
|
case 10:
|
|
// modifier has no row enable
|
|
// to select virtual row, set port as input
|
|
DDRA &= ~0b00000001;
|
|
PORTA |= 0b00000001;
|
|
DDRB &= ~0b00011100;
|
|
PORTB |= 0b00011100;
|
|
DDRF &= ~0b00110000;
|
|
PORTF |= 0b00110000;
|
|
break;
|
|
|
|
}
|
|
}
|