Answers for "lora node arduino"

lora node arduino

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

// LoRaWAN NwkSKey, network session key
static const PROGMEM u1_t NWKSKEY[16] = { 0xAE, 0xBD, 0x9B, 0xBC, 0x43, 0x41, 0xFB, 0x47, 0x3D, 0xA5, 0x8D, 0x0D, 0x48, 0x98, 0xEF, 0xCF };

// LoRaWAN AppSKey, application session key
static const u1_t PROGMEM APPSKEY[16] = { 0xE1, 0x51, 0x0F, 0xB1, 0x59, 0x4C, 0xC8, 0xD7, 0xAA, 0x43, 0xAC, 0xE7, 0xE2, 0xBC, 0x5F, 0x1B };

// LoRaWAN end-device address (DevAddr)
static const u4_t DEVADDR = { 0x260314F7 };

// 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[] = "HI,Lora World!";
static osjob_t sendjob;

// Schedule data trasmission in every this many seconds (might become longer due to duty
// cycle limitations).
// we set 10 seconds interval
const unsigned TX_INTERVAL = 10;

// Pin mapping according to Cytron LoRa Shield RFM
const lmic_pinmap lmic_pins = {
	.nss = 10,
	.rxtx = LMIC_UNUSED_PIN,
	.rst = 7,
	.dio = {2, 5, 6},
};

void onEvent (ev_t ev) {
	Serial.print(os_getTime());
	Serial.print(": ");
	switch(ev) {
		case EV_TXCOMPLETE:
			Serial.println(F("EV_TXCOMPLETE (includes waiting for RX windows)"));
			// Schedule next transmission
			os_setTimedCallback(&sendjob, os_getTime()+sec2osticks(TX_INTERVAL), do_send);
			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"));

	// 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.
	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);

	// Select frequencies range
	LMIC_selectSubBand(3);

	// Disable link check validation
	LMIC_setLinkCheckMode(0);

        // Disable ADR
        LMIC_setAdrMode(false);

	// TTN uses SF9 for its RX2 window.
	LMIC.dn2Dr = DR_SF9;

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

	// Start job
	do_send(&sendjob);
}

void loop() {
	os_runloop_once();
}