/*
 * The MySensors Arduino library handles the wireless radio link and protocol
 * between your home built sensors/actuators and HA controller of choice.
 * The sensors forms a self healing radio network with optional repeaters. Each
 * repeater and gateway builds a routing tables in EEPROM which keeps track of the
 * network topology allowing messages to be routed to nodes.
 *
 * Created by Henrik Ekblad <henrik.ekblad@mysensors.org>
 * Copyright (C) 2013-2015 Sensnology AB
 * Full contributor list: https://github.com/mysensors/Arduino/graphs/contributors
 *
 * Documentation: http://www.mysensors.org
 * Support Forum: http://forum.mysensors.org
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 */

#include "MyConfig.h"
#include "MyTransport.h"
#include <stdint.h>
#include "drivers/RFM69/RFM69.h"

RFM69 _radio(MY_RF69_SPI_CS, MY_RF69_IRQ_PIN, MY_RFM69HW, MY_RF69_IRQ_NUM);
uint8_t _address;


bool transportInit() {
	// Start up the radio library (_address will be set later by the MySensors library)
	if (_radio.initialize(MY_RFM69_FREQUENCY, _address, MY_RFM69_NETWORKID)) {
		#ifdef MY_RFM69_ENABLE_ENCRYPTION
			uint8_t _psk[16];
			hwReadConfigBlock((void*)_psk, (void*)EEPROM_RF_ENCRYPTION_AES_KEY_ADDRESS, 16);
			_radio.encrypt((const char*)_psk);
			memset(_psk, 0, 16); // Make sure it is purged from memory when set
		#endif
		return true;
	}
	return false;
}

void transportSetAddress(uint8_t address) {
	_address = address;
	_radio.setAddress(address);
}

uint8_t transportGetAddress() {
	return _address;
}

bool transportSend(uint8_t to, const void* data, uint8_t len) {
	return _radio.sendWithRetry(to,data,len);
}

bool transportAvailable() {
	return _radio.receiveDone();
}

bool transportSanityCheck() {
	// not implemented yet
	return true;
}

uint8_t transportReceive(void* data) {
	memcpy(data,(const void *)_radio.DATA, _radio.DATALEN);
	// Send ack back if this message wasn't a broadcast
	if (_radio.TARGETID != RF69_BROADCAST_ADDR)
		_radio.ACKRequested();
    _radio.sendACK();
	return _radio.DATALEN;
}	

void transportPowerDown() {
	_radio.sleep();
}