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();
}