299 lines
6.9 KiB
C
299 lines
6.9 KiB
C
/*
|
|
Copyright 2012 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 <avr/wdt.h>
|
|
#include <avr/interrupt.h>
|
|
#include <util/delay.h>
|
|
#include "print.h"
|
|
#include "debug.h"
|
|
#include "util.h"
|
|
#include "timer.h"
|
|
#include "matrix.h"
|
|
#include "i2c.h"
|
|
#include "serial.h"
|
|
#include "split-util.h"
|
|
#include "pro-micro.h"
|
|
#include "config.h"
|
|
|
|
#include "pin_defs.h"
|
|
|
|
#ifndef DEBOUNCE
|
|
# define DEBOUNCE 5
|
|
#endif
|
|
|
|
#define ERROR_DISCONNECT_COUNT 5
|
|
|
|
#define I2C_MATRIX_ADDR 0x00
|
|
#define I2C_LED_ADDR ROWS_PER_HAND
|
|
|
|
static uint8_t debouncing = DEBOUNCE;
|
|
static uint8_t error_count = 0;
|
|
|
|
/* matrix state(1:on, 0:off) */
|
|
static matrix_row_t matrix[MATRIX_ROWS];
|
|
static matrix_row_t matrix_debouncing[MATRIX_ROWS];
|
|
|
|
static const uint8_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
|
|
static const uint8_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
|
|
|
|
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)
|
|
{
|
|
// To use PORTF disable JTAG with writing JTD bit twice within four cycles.
|
|
MCUCR |= (1<<JTD);
|
|
MCUCR |= (1<<JTD);
|
|
|
|
debug_enable = true;
|
|
debug_matrix = true;
|
|
debug_mouse = true;
|
|
// initialize row and col
|
|
unselect_rows();
|
|
init_cols();
|
|
|
|
TX_RX_LED_INIT;
|
|
//Turn LEDs off by default
|
|
RXLED0;
|
|
TXLED0;
|
|
|
|
// 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)
|
|
{
|
|
// Right hand is stored after the left in the matirx so, we need to offset it
|
|
int offset = isLeftHand ? 0 : (ROWS_PER_HAND);
|
|
|
|
for (uint8_t i = 0; i < ROWS_PER_HAND; i++) {
|
|
select_row(i);
|
|
_delay_us(30); // without this wait read unstable value.
|
|
matrix_row_t cols = read_cols();
|
|
if (matrix_debouncing[i+offset] != cols) {
|
|
matrix_debouncing[i+offset] = cols;
|
|
debouncing = DEBOUNCE;
|
|
}
|
|
unselect_rows();
|
|
}
|
|
|
|
if (debouncing) {
|
|
if (--debouncing) {
|
|
_delay_ms(1);
|
|
} else {
|
|
for (uint8_t i = 0; i < ROWS_PER_HAND; i++) {
|
|
matrix[i+offset] = matrix_debouncing[i+offset];
|
|
}
|
|
}
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
// Get rows from other half over i2c
|
|
int i2c_transaction(void) {
|
|
bool err = false;
|
|
int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
|
|
|
|
err = i2c_master_read(
|
|
SLAVE_I2C_ADDRESS, // i2c address of other half
|
|
I2C_MATRIX_ADDR, // read the slaves matrix data
|
|
matrix+slaveOffset, // store in correct position in master's matrix
|
|
ROWS_PER_HAND // number of bytes to read
|
|
);
|
|
|
|
#ifdef I2C_WRITE_TEST_CODE
|
|
// controls the RX led on the slave and toggles it every second
|
|
uint8_t test_data = (timer_read() / 1000) % 2;
|
|
|
|
err |= i2c_master_write(
|
|
SLAVE_I2C_ADDRESS, // i2c address of other half
|
|
I2C_LED_ADDR, // address for led control
|
|
&test_data, // data to send
|
|
sizeof(test_data) // size of test data
|
|
);
|
|
#endif
|
|
|
|
return err;
|
|
}
|
|
|
|
int serial_transaction(void) {
|
|
int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
|
|
|
|
if (serial_update_buffers()) {
|
|
return 1;
|
|
}
|
|
|
|
for (int i = 0; i < ROWS_PER_HAND; ++i) {
|
|
matrix[slaveOffset+i] = serial_slave_buffer[i];
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
uint8_t matrix_scan(void)
|
|
{
|
|
int ret = _matrix_scan();
|
|
|
|
|
|
|
|
#ifdef USE_I2C
|
|
if( i2c_transaction() ) {
|
|
#else
|
|
if( serial_transaction() ) {
|
|
#endif
|
|
// turn on the indicator led when halves are disconnected
|
|
TXLED1;
|
|
|
|
error_count++;
|
|
|
|
if (error_count > ERROR_DISCONNECT_COUNT) {
|
|
// reset other half if disconnected
|
|
int slaveOffset = (isLeftHand) ? (ROWS_PER_HAND) : 0;
|
|
for (int i = 0; i < ROWS_PER_HAND; ++i) {
|
|
matrix[slaveOffset+i] = 0;
|
|
}
|
|
}
|
|
} else {
|
|
// turn off the indicator led on no error
|
|
TXLED0;
|
|
error_count = 0;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
void matrix_slave_scan(void) {
|
|
_matrix_scan();
|
|
|
|
int offset = (isLeftHand) ? 0 : (MATRIX_ROWS / 2);
|
|
|
|
#ifdef USE_I2C
|
|
for (int i = 0; i < ROWS_PER_HAND; ++i) {
|
|
i2c_slave_write(I2C_MATRIX_ADDR+i, matrix[offset+i]);
|
|
}
|
|
|
|
#ifdef I2C_WRITE_TEST_CODE
|
|
// control the pro micro RX LED based on what the
|
|
// i2c master has sent us
|
|
uint8_t led_state = i2c_slave_read(I2C_LED_ADDR);
|
|
if (led_state == 1) {
|
|
RXLED1;
|
|
} else if(led_state == 0) {
|
|
RXLED0;
|
|
}
|
|
#endif
|
|
|
|
#else
|
|
for (int i = 0; i < ROWS_PER_HAND; ++i) {
|
|
serial_slave_buffer[i] = matrix[offset+i];
|
|
}
|
|
#endif
|
|
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
|
|
static void init_cols(void)
|
|
{
|
|
for(int x = 0; x < MATRIX_COLS; x++) {
|
|
_SFR_IO8((col_pins[x] >> 4) + 1) &= ~_BV(col_pins[x] & 0xF);
|
|
_SFR_IO8((col_pins[x] >> 4) + 2) |= _BV(col_pins[x] & 0xF);
|
|
}
|
|
}
|
|
|
|
static matrix_row_t read_cols(void)
|
|
{
|
|
matrix_row_t result = 0;
|
|
for(int x = 0; x < MATRIX_COLS; x++) {
|
|
result |= (_SFR_IO8(col_pins[x] >> 4) & _BV(col_pins[x] & 0xF)) ? 0 : (1 << x);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
static void unselect_rows(void)
|
|
{
|
|
for(int x = 0; x < ROWS_PER_HAND; x++) {
|
|
_SFR_IO8((row_pins[x] >> 4) + 1) &= ~_BV(row_pins[x] & 0xF);
|
|
_SFR_IO8((row_pins[x] >> 4) + 2) |= _BV(row_pins[x] & 0xF);
|
|
}
|
|
}
|
|
|
|
static void select_row(uint8_t row)
|
|
{
|
|
_SFR_IO8((row_pins[row] >> 4) + 1) |= _BV(row_pins[row] & 0xF);
|
|
_SFR_IO8((row_pins[row] >> 4) + 2) &= ~_BV(row_pins[row] & 0xF);
|
|
}
|