LoRaWAN-Signal-Mapping/iot/TTNTest/TTNTest.ino

/*******************************************************************************
 * Copyright (c) 2015 Thomas Telkamp and Matthijs Kooijman
 *
 * Permission is hereby granted, free of charge, to anyone
 * obtaining a copy of this document and accompanying files,
 * to do whatever they want with them without any restriction,
 * including, but not limited to, copying, modification and redistribution.
 * NO WARRANTY OF ANY KIND IS PROVIDED.
 *
 * This example sends a valid LoRaWAN packet with payload "Hello,
 * world!", using frequency and encryption settings matching those of
 * the (early prototype version of) The Things Network.
 *
 * Note: LoRaWAN per sub-band duty-cycle limitation is enforced (1% in g1,
 *  0.1% in g2).
 *
 * Change DEVADDR to a unique address!
 * See http://thethingsnetwork.org/wiki/AddressSpace
 *
 * Do not forget to define the radio type correctly in config.h.
 *
 *******************************************************************************/

#include <lmic.h>
#include <hal/hal.h>
#include <SPI.h>

#include "config.custom.h"

// These callbacks are only used in over-the-air activation, so they are
// left empty here (we cannot leave them out completely unless
// DISABLE_JOIN is set in config.h, otherwise the linker will complain).
void os_getArtEui (u1_t* buf) { }
void os_getDevEui (u1_t* buf) { }
void os_getDevKey (u1_t* buf) { }

static uint8_t mydata[] = "Hello, world!";
static osjob_t sendjob;

// Schedule TX every this many seconds (might become longer due to duty
// cycle limitations).
const unsigned TX_INTERVAL = 60;

// Pin mapping
const lmic_pinmap lmic_pins = {
	.nss = 10,
	.rxtx = LMIC_UNUSED_PIN,
	.rst = 9,
	.dio = {2, 6, 7},
};

void onEvent (ev_t ev) {
	Serial.print(os_getTime());
	Serial.print(": ");
	switch(ev) {
		case EV_SCAN_TIMEOUT:
			Serial.println(F("EV_SCAN_TIMEOUT"));
			break;
		case EV_BEACON_FOUND:
			Serial.println(F("EV_BEACON_FOUND"));
			break;
		case EV_BEACON_MISSED:
			Serial.println(F("EV_BEACON_MISSED"));
			break;
		case EV_BEACON_TRACKED:
			Serial.println(F("EV_BEACON_TRACKED"));
			break;
		case EV_JOINING:
			Serial.println(F("EV_JOINING"));
			break;
		case EV_JOINED:
			Serial.println(F("EV_JOINED"));
			break;
		case EV_RFU1:
			Serial.println(F("EV_RFU1"));
			break;
		case EV_JOIN_FAILED:
			Serial.println(F("EV_JOIN_FAILED"));
			break;
		case EV_REJOIN_FAILED:
			Serial.println(F("EV_REJOIN_FAILED"));
			break;
			break;
		case EV_TXCOMPLETE:
			Serial.println(F("EV_TXCOMPLETE (includes waiting for RX windows)"));
			if(LMIC.dataLen) {
				// data received in rx slot after tx
				Serial.print(F("Data Received: "));
				Serial.write(LMIC.frame+LMIC.dataBeg, LMIC.dataLen);
				Serial.println();
			}
			// Schedule next transmission
			os_setTimedCallback(&sendjob, os_getTime()+sec2osticks(TX_INTERVAL), do_send);
			break;
		case EV_LOST_TSYNC:
			Serial.println(F("EV_LOST_TSYNC"));
			break;
		case EV_RESET:
			Serial.println(F("EV_RESET"));
			break;
		case EV_RXCOMPLETE:
			// data received in ping slot
			Serial.println(F("EV_RXCOMPLETE"));
			break;
		case EV_LINK_DEAD:
			Serial.println(F("EV_LINK_DEAD"));
			break;
		case EV_LINK_ALIVE:
			Serial.println(F("EV_LINK_ALIVE"));
			break;
		 default:
			Serial.println(F("Unknown event"));
			break;
	}
}

void do_send(osjob_t* j){
	// Check if there is not a current TX/RX job running
	if (LMIC.opmode & OP_TXRXPEND) {
		Serial.println(F("OP_TXRXPEND, not sending"));
	} else {
		// Prepare upstream data transmission at the next possible time.
		LMIC_setTxData2(1, mydata, sizeof(mydata)-1, 0);
		Serial.println(F("Packet queued"));
	}
	// Next TX is scheduled after TX_COMPLETE event.
}

void setup() {
	Serial.begin(115200);
	Serial.println(F("Starting"));

	#ifdef VCC_ENABLE
	// For Pinoccio Scout boards
	pinMode(VCC_ENABLE, OUTPUT);
	digitalWrite(VCC_ENABLE, HIGH);
	delay(1000);
	#endif

	// LMIC init
	os_init();
	// Reset the MAC state. Session and pending data transfers will be discarded.
	LMIC_reset();

	// Set static session parameters. Instead of dynamically establishing a session
	// by joining the network, precomputed session parameters are be provided.
	#ifdef PROGMEM
	// On AVR, these values are stored in flash and only copied to RAM
	// once. Copy them to a temporary buffer here, LMIC_setSession will
	// copy them into a buffer of its own again.
	uint8_t appskey[sizeof(APPSKEY)];
	uint8_t nwkskey[sizeof(NWKSKEY)];
	memcpy_P(appskey, APPSKEY, sizeof(APPSKEY));
	memcpy_P(nwkskey, NWKSKEY, sizeof(NWKSKEY));
	LMIC_setSession (0x1, DEVADDR, nwkskey, appskey);
	#else
	// If not running an AVR with PROGMEM, just use the arrays directly 
	LMIC_setSession (0x1, DEVADDR, NWKSKEY, APPSKEY);
	#endif

	// Set up the channels used by the Things Network, which corresponds
	// to the defaults of most gateways. Without this, only three base
	// channels from the LoRaWAN specification are used, which certainly
	// works, so it is good for debugging, but can overload those
	// frequencies, so be sure to configure the full frequency range of
	// your network here (unless your network autoconfigures them).
	// Setting up channels should happen after LMIC_setSession, as that
	// configures the minimal channel set.
	LMIC_setupChannel(0, 868100000, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_CENTI);      // g-band
	LMIC_setupChannel(1, 868300000, DR_RANGE_MAP(DR_SF12, DR_SF7B), BAND_CENTI);      // g-band
	LMIC_setupChannel(2, 868500000, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_CENTI);      // g-band
	LMIC_setupChannel(3, 867100000, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_CENTI);      // g-band
	LMIC_setupChannel(4, 867300000, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_CENTI);      // g-band
	LMIC_setupChannel(5, 867500000, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_CENTI);      // g-band
	LMIC_setupChannel(6, 867700000, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_CENTI);      // g-band
	LMIC_setupChannel(7, 867900000, DR_RANGE_MAP(DR_SF12, DR_SF7),  BAND_CENTI);      // g-band
	LMIC_setupChannel(8, 868800000, DR_RANGE_MAP(DR_FSK,  DR_FSK),  BAND_MILLI);      // g2-band
	// TTN defines an additional channel at 869.525Mhz using SF9 for class B
	// devices' ping slots. LMIC does not have an easy way to define set this
	// frequency and support for class B is spotty and untested, so this
	// frequency is not configured here.

	// Disable link check validation
	LMIC_setLinkCheckMode(0);

	// Set data rate and transmit power (note: txpow seems to be ignored by the library)
	LMIC_setDrTxpow(DR_SF7,14);

	// Start job
	do_send(&sendjob);
}

void loop() {
	os_runloop_once();
}