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#include <avr/io.h>
#include <avr/wdt.h>
#include <avr/power.h>
#include <avr/interrupt.h>
#include <util/delay.h>
#include <avr/eeprom.h>
#include "split_util.h"
#include "matrix.h"
#include "keyboard.h"
#include "config.h"
#include "timer.h"
#include "split_flags.h"
#ifdef RGBLIGHT_ENABLE
# include "rgblight.h"
#endif
#ifdef BACKLIGHT_ENABLE
# include "backlight.h"
#endif
#ifdef SPLIT_HAND_PIN
# include "pincontrol.h"
#endif
#if defined(USE_I2C) || defined(EH)
# include "i2c.h"
#else
# include "serial.h"
#endif
volatile bool isLeftHand = true;
volatile uint8_t setTries = 0;
static void setup_handedness(void) {
#ifdef SPLIT_HAND_PIN
// Test pin SPLIT_HAND_PIN for High/Low, if low it's right hand
pinMode(SPLIT_HAND_PIN, PinDirectionInput);
isLeftHand = digitalRead(SPLIT_HAND_PIN);
#else
#ifdef EE_HANDS
isLeftHand = eeprom_read_byte(EECONFIG_HANDEDNESS);
#else
// I2C_MASTER_RIGHT is deprecated, use MASTER_RIGHT instead, since this works for both serial and i2c
#if defined(I2C_MASTER_RIGHT) || defined(MASTER_RIGHT)
isLeftHand = !has_usb();
#else
isLeftHand = has_usb();
#endif
#endif
#endif
}
static void keyboard_master_setup(void) {
#if defined(USE_I2C) || defined(EH)
i2c_master_init();
#ifdef SSD1306OLED
matrix_master_OLED_init ();
#endif
#else
serial_master_init();
#endif
// For master the Backlight info needs to be sent on startup
// Otherwise the salve won't start with the proper info until an update
BACKLIT_DIRTY = true;
}
static void keyboard_slave_setup(void) {
timer_init();
#if defined(USE_I2C) || defined(EH)
i2c_slave_init(SLAVE_I2C_ADDRESS);
#else
serial_slave_init();
#endif
}
bool has_usb(void) {
USBCON |= (1 << OTGPADE); //enables VBUS pad
_delay_us(5);
return (USBSTA & (1<<VBUS)); //checks state of VBUS
}
void split_keyboard_setup(void) {
setup_handedness();
if (has_usb()) {
keyboard_master_setup();
} else {
keyboard_slave_setup();
}
sei();
}
void disable_JTAG(void);
void keyboard_slave_loop(void) {
// Disable JTAG since we skip calling keyboard_init() on the slave side
// Future fix will possible call keyboard_init() on the slave to remove this need
disable_JTAG();
matrix_init();
//Init RGB
#ifdef RGBLIGHT_ENABLE
rgblight_init();
#endif
while (1) {
// Matrix Slave Scan
matrix_slave_scan();
// Read Backlight Info
#ifdef BACKLIGHT_ENABLE
#ifdef USE_I2C
if (BACKLIT_DIRTY) {
backlight_set(i2c_slave_buffer[I2C_BACKLIT_START]);
BACKLIT_DIRTY = false;
}
#else // USE_SERIAL
backlight_set(serial_master_buffer[SERIAL_BACKLIT_START]);
#endif
#endif
// Read RGB Info
#ifdef RGBLIGHT_ENABLE
#ifdef USE_I2C
if (RGB_DIRTY) {
// Disable interupts (RGB data is big)
cli();
// Create new DWORD for RGB data
uint32_t dword;
// Fill the new DWORD with the data that was sent over
uint8_t *dword_dat = (uint8_t *)(&dword);
for (int i = 0; i < 4; i++) {
dword_dat[i] = i2c_slave_buffer[I2C_RGB_START+i];
}
// Update the RGB now with the new data and set RGB_DIRTY to false
rgblight_update_dword(dword);
RGB_DIRTY = false;
// Re-enable interupts now that RGB is set
sei();
}
#else // USE_SERIAL
// Add serial implementation for RGB here
#endif
#endif
}
}
// this code runs before the usb and keyboard is initialized
void matrix_setup(void) {
split_keyboard_setup();
if (!has_usb()) {
//rgblight_init();
keyboard_slave_loop();
}
}
// Temporary code to disable JTAG on the slave board
void disable_JTAG(void) {
/* Copied from tmk_core/common/keybaord.c */
// To use PORTF disable JTAG with writing JTD bit twice within four cycles.
#if (defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB1287__) || defined(__AVR_ATmega32U4__))
MCUCR |= _BV(JTD);
MCUCR |= _BV(JTD);
#endif
}
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