mirror of
https://github.com/Keychron/qmk_firmware.git
synced 2024-11-30 20:56:32 +06:00
395 lines
9.9 KiB
C
395 lines
9.9 KiB
C
/*
|
|
|
|
Note for ErgoDox EZ customizers: Here be dragons!
|
|
This is not a file you want to be messing with.
|
|
All of the interesting stuff for you is under keymaps/ :)
|
|
Love, Erez
|
|
|
|
Copyright 2013 Oleg Kostyuk <cub.uanic@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 "wait.h"
|
|
#include "action_layer.h"
|
|
#include "print.h"
|
|
#include "debug.h"
|
|
#include "util.h"
|
|
#include "matrix.h"
|
|
#include "ez.h"
|
|
#include "i2cmaster.h"
|
|
#ifdef DEBUG_MATRIX_SCAN_RATE
|
|
#include "timer.h"
|
|
#endif
|
|
|
|
/*
|
|
* This constant define not debouncing time in msecs, but amount of matrix
|
|
* scan loops which should be made to get stable debounced results.
|
|
*
|
|
* On Ergodox matrix scan rate is relatively low, because of slow I2C.
|
|
* Now it's only 317 scans/second, or about 3.15 msec/scan.
|
|
* According to Cherry specs, debouncing time is 5 msec.
|
|
*
|
|
* And so, there is no sense to have DEBOUNCE higher than 2.
|
|
*/
|
|
|
|
#ifndef DEBOUNCE
|
|
# define DEBOUNCE 5
|
|
#endif
|
|
|
|
/* matrix state(1:on, 0:off) */
|
|
static matrix_row_t matrix[MATRIX_ROWS];
|
|
|
|
// Debouncing: store for each key the number of scans until it's eligible to
|
|
// change. When scanning the matrix, ignore any changes in keys that have
|
|
// already changed in the last DEBOUNCE scans.
|
|
static uint8_t debounce_matrix[MATRIX_ROWS * MATRIX_COLS];
|
|
|
|
static matrix_row_t read_cols(uint8_t row);
|
|
static void init_cols(void);
|
|
static void unselect_rows(void);
|
|
static void select_row(uint8_t row);
|
|
|
|
static uint8_t mcp23018_reset_loop;
|
|
|
|
#ifdef DEBUG_MATRIX_SCAN_RATE
|
|
uint32_t matrix_timer;
|
|
uint32_t matrix_scan_count;
|
|
#endif
|
|
|
|
|
|
__attribute__ ((weak))
|
|
void matrix_init_user(void) {}
|
|
|
|
__attribute__ ((weak))
|
|
void matrix_scan_user(void) {}
|
|
|
|
__attribute__ ((weak))
|
|
void matrix_init_kb(void) {
|
|
matrix_init_user();
|
|
}
|
|
|
|
__attribute__ ((weak))
|
|
void matrix_scan_kb(void) {
|
|
matrix_scan_user();
|
|
}
|
|
|
|
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
|
|
|
|
mcp23018_status = init_mcp23018();
|
|
|
|
|
|
unselect_rows();
|
|
init_cols();
|
|
|
|
// initialize matrix state: all keys off
|
|
for (uint8_t i=0; i < MATRIX_ROWS; i++) {
|
|
matrix[i] = 0;
|
|
for (uint8_t j=0; j < MATRIX_COLS; ++j) {
|
|
debounce_matrix[i * MATRIX_COLS + j] = 0;
|
|
}
|
|
}
|
|
|
|
#ifdef DEBUG_MATRIX_SCAN_RATE
|
|
matrix_timer = timer_read32();
|
|
matrix_scan_count = 0;
|
|
#endif
|
|
|
|
matrix_init_quantum();
|
|
|
|
}
|
|
|
|
void matrix_power_up(void) {
|
|
mcp23018_status = init_mcp23018();
|
|
|
|
unselect_rows();
|
|
init_cols();
|
|
|
|
// initialize matrix state: all keys off
|
|
for (uint8_t i=0; i < MATRIX_ROWS; i++) {
|
|
matrix[i] = 0;
|
|
}
|
|
|
|
#ifdef DEBUG_MATRIX_SCAN_RATE
|
|
matrix_timer = timer_read32();
|
|
matrix_scan_count = 0;
|
|
#endif
|
|
}
|
|
|
|
// Returns a matrix_row_t whose bits are set if the corresponding key should be
|
|
// eligible to change in this scan.
|
|
matrix_row_t debounce_mask(uint8_t row) {
|
|
matrix_row_t result = 0;
|
|
for (uint8_t j=0; j < MATRIX_COLS; ++j) {
|
|
if (debounce_matrix[row * MATRIX_COLS + j]) {
|
|
--debounce_matrix[row * MATRIX_COLS + j];
|
|
} else {
|
|
result |= (1 << j);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
// Report changed keys in the given row. Resets the debounce countdowns
|
|
// corresponding to each set bit in 'change' to DEBOUNCE.
|
|
void debounce_report(matrix_row_t change, uint8_t row) {
|
|
for (uint8_t i = 0; i < MATRIX_COLS; ++i) {
|
|
if (change & (1 << i)) {
|
|
debounce_matrix[row * MATRIX_COLS + i] = DEBOUNCE;
|
|
}
|
|
}
|
|
}
|
|
|
|
uint8_t matrix_scan(void)
|
|
{
|
|
if (mcp23018_status) { // if there was an error
|
|
if (++mcp23018_reset_loop == 0) {
|
|
// since mcp23018_reset_loop is 8 bit - we'll try to reset once in 255 matrix scans
|
|
// this will be approx bit more frequent than once per second
|
|
print("trying to reset mcp23018\n");
|
|
mcp23018_status = init_mcp23018();
|
|
if (mcp23018_status) {
|
|
print("left side not responding\n");
|
|
} else {
|
|
print("left side attached\n");
|
|
ergodox_blink_all_leds();
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef DEBUG_MATRIX_SCAN_RATE
|
|
matrix_scan_count++;
|
|
|
|
uint32_t timer_now = timer_read32();
|
|
if (TIMER_DIFF_32(timer_now, matrix_timer)>1000) {
|
|
print("matrix scan frequency: ");
|
|
pdec(matrix_scan_count);
|
|
print("\n");
|
|
|
|
matrix_timer = timer_now;
|
|
matrix_scan_count = 0;
|
|
}
|
|
#endif
|
|
|
|
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
|
|
select_row(i);
|
|
wait_us(30); // without this wait read unstable value.
|
|
matrix_row_t mask = debounce_mask(i);
|
|
matrix_row_t cols = (read_cols(i) & mask) | (matrix[i] & ~mask);
|
|
debounce_report(cols ^ matrix[i], i);
|
|
matrix[i] = cols;
|
|
|
|
unselect_rows();
|
|
}
|
|
|
|
matrix_scan_quantum();
|
|
|
|
return 1;
|
|
}
|
|
|
|
bool matrix_is_modified(void) // deprecated and evidently not called.
|
|
{
|
|
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
|
|
*
|
|
* Teensy
|
|
* col: 0 1 2 3 4 5
|
|
* pin: F0 F1 F4 F5 F6 F7
|
|
*
|
|
* MCP23018
|
|
* col: 0 1 2 3 4 5
|
|
* pin: B5 B4 B3 B2 B1 B0
|
|
*/
|
|
static void init_cols(void)
|
|
{
|
|
// init on mcp23018
|
|
// not needed, already done as part of init_mcp23018()
|
|
|
|
// init on teensy
|
|
// Input with pull-up(DDR:0, PORT:1)
|
|
DDRF &= ~(1<<7 | 1<<6 | 1<<5 | 1<<4 | 1<<1 | 1<<0);
|
|
PORTF |= (1<<7 | 1<<6 | 1<<5 | 1<<4 | 1<<1 | 1<<0);
|
|
}
|
|
|
|
static matrix_row_t read_cols(uint8_t row)
|
|
{
|
|
if (row < 7) {
|
|
if (mcp23018_status) { // if there was an error
|
|
return 0;
|
|
} else {
|
|
uint8_t data = 0;
|
|
mcp23018_status = i2c_start(I2C_ADDR_WRITE); if (mcp23018_status) goto out;
|
|
mcp23018_status = i2c_write(GPIOB); if (mcp23018_status) goto out;
|
|
mcp23018_status = i2c_start(I2C_ADDR_READ); if (mcp23018_status) goto out;
|
|
data = i2c_readNak();
|
|
data = ~data;
|
|
out:
|
|
i2c_stop();
|
|
return data;
|
|
}
|
|
} else {
|
|
// read from teensy
|
|
return
|
|
(PINF&(1<<0) ? 0 : (1<<0)) |
|
|
(PINF&(1<<1) ? 0 : (1<<1)) |
|
|
(PINF&(1<<4) ? 0 : (1<<2)) |
|
|
(PINF&(1<<5) ? 0 : (1<<3)) |
|
|
(PINF&(1<<6) ? 0 : (1<<4)) |
|
|
(PINF&(1<<7) ? 0 : (1<<5)) ;
|
|
}
|
|
}
|
|
|
|
/* Row pin configuration
|
|
*
|
|
* Teensy
|
|
* row: 7 8 9 10 11 12 13
|
|
* pin: B0 B1 B2 B3 D2 D3 C6
|
|
*
|
|
* MCP23018
|
|
* row: 0 1 2 3 4 5 6
|
|
* pin: A0 A1 A2 A3 A4 A5 A6
|
|
*/
|
|
static void unselect_rows(void)
|
|
{
|
|
// unselect on mcp23018
|
|
if (mcp23018_status) { // if there was an error
|
|
// do nothing
|
|
} else {
|
|
// set all rows hi-Z : 1
|
|
mcp23018_status = i2c_start(I2C_ADDR_WRITE); if (mcp23018_status) goto out;
|
|
mcp23018_status = i2c_write(GPIOA); if (mcp23018_status) goto out;
|
|
mcp23018_status = i2c_write( 0xFF
|
|
& ~(0<<7)
|
|
); if (mcp23018_status) goto out;
|
|
out:
|
|
i2c_stop();
|
|
}
|
|
|
|
// unselect on teensy
|
|
// Hi-Z(DDR:0, PORT:0) to unselect
|
|
DDRB &= ~(1<<0 | 1<<1 | 1<<2 | 1<<3);
|
|
PORTB &= ~(1<<0 | 1<<1 | 1<<2 | 1<<3);
|
|
DDRD &= ~(1<<2 | 1<<3);
|
|
PORTD &= ~(1<<2 | 1<<3);
|
|
DDRC &= ~(1<<6);
|
|
PORTC &= ~(1<<6);
|
|
}
|
|
|
|
static void select_row(uint8_t row)
|
|
{
|
|
if (row < 7) {
|
|
// select on mcp23018
|
|
if (mcp23018_status) { // if there was an error
|
|
// do nothing
|
|
} else {
|
|
// set active row low : 0
|
|
// set other rows hi-Z : 1
|
|
mcp23018_status = i2c_start(I2C_ADDR_WRITE); if (mcp23018_status) goto out;
|
|
mcp23018_status = i2c_write(GPIOA); if (mcp23018_status) goto out;
|
|
mcp23018_status = i2c_write( 0xFF & ~(1<<row)
|
|
& ~(0<<7)
|
|
); if (mcp23018_status) goto out;
|
|
out:
|
|
i2c_stop();
|
|
}
|
|
} else {
|
|
// select on teensy
|
|
// Output low(DDR:1, PORT:0) to select
|
|
switch (row) {
|
|
case 7:
|
|
DDRB |= (1<<0);
|
|
PORTB &= ~(1<<0);
|
|
break;
|
|
case 8:
|
|
DDRB |= (1<<1);
|
|
PORTB &= ~(1<<1);
|
|
break;
|
|
case 9:
|
|
DDRB |= (1<<2);
|
|
PORTB &= ~(1<<2);
|
|
break;
|
|
case 10:
|
|
DDRB |= (1<<3);
|
|
PORTB &= ~(1<<3);
|
|
break;
|
|
case 11:
|
|
DDRD |= (1<<2);
|
|
PORTD &= ~(1<<3);
|
|
break;
|
|
case 12:
|
|
DDRD |= (1<<3);
|
|
PORTD &= ~(1<<3);
|
|
break;
|
|
case 13:
|
|
DDRC |= (1<<6);
|
|
PORTC &= ~(1<<6);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|