It s inspired from arduino, it s specified even in README file.
This is my main.cpp file:
/*******************************************************************************
* 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!", that
* will be processed by The Things Network server.
*
* 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, default is:
* #define CFG_sx1272_radio 1
* for SX1272 and RFM92, but change to:
* #define CFG_sx1276_radio 1
* for SX1276 and RFM95.
*
*******************************************************************************/
#include <stdio.h>
#include <time.h>
#include <wiringPi.h>
#include <lmic.h>
#include <hal.h>
#include <local_hal.h>
// LoRaWAN Application identifier (AppEUI)
// Not used in this example
static const u1_t APPEUI[8] = {};
// LoRaWAN DevEUI, unique device ID (LSBF)
// Not used in this example
static const u1_t DEVEUI[8] = {};
// LoRaWAN NwkSKey, network session key
// Use this key for The Things Network
static const u1_t DEVKEY[16] = {};
// LoRaWAN AppSKey, application session key
// Use this key to get your data decrypted by The Things Network
static const u1_t ARTKEY[16] = {};//
// LoRaWAN end-device address (DevAddr)
// See http://thethingsnetwork.org/wiki/AddressSpace
static const u4_t DEVADDR = 0x260B285F;
//////////////////////////////////////////////////
// APPLICATION CALLBACKS
//////////////////////////////////////////////////
// provide application router ID (8 bytes, LSBF)
void os_getArtEui (u1_t* buf) {
memcpy(buf, APPEUI, 8);
}
// provide device ID (8 bytes, LSBF)
void os_getDevEui (u1_t* buf) {
memcpy(buf, DEVEUI, 8);
}
// provide device key (16 bytes)
void os_getDevKey (u1_t* buf) {
memcpy(buf, DEVKEY, 16);
}
u4_t cntr=0;
u1_t mydata[] = {"Hello, world! "};
static osjob_t sendjob;
// Pin mapping
lmic_pinmap pins = {
.nss = 6,
.rxtx = UNUSED_PIN, // Not connected on RFM92/RFM95
.rst = 0, // Needed on RFM92/RFM95
.dio = {7,4,5}
};
void onEvent (ev_t ev) {
//debug_event(ev);
switch(ev) {
// scheduled data sent (optionally data received)
// note: this includes the receive window!
case EV_TXCOMPLETE:
// use this event to keep track of actual transmissions
fprintf(stdout, "Event EV_TXCOMPLETE, time: %d\n", millis() / 1000);
if(LMIC.dataLen) { // data received in rx slot after tx
//debug_buf(LMIC.frame+LMIC.dataBeg, LMIC.dataLen);
fprintf(stdout, "Data Received!\n");
}
break;
default:
break;
}
}
static void do_send(osjob_t* j){
time_t t=time(NULL);
fprintf(stdout, "[%x] (%ld) %s\n", hal_ticks(), t, ctime(&t));
// Show TX channel (channel numbers are local to LMIC)
// Check if there is not a current TX/RX job running
if (LMIC.opmode & (1 << 7)) {
fprintf(stdout, "OP_TXRXPEND, not sending");
} else {
// Prepare upstream data transmission at the next possible time.
char buf[100];
sprintf(buf, "%d", cntr++);
int i=0;
while(buf[i]) {
mydata[i]=buf[i];
i++;
}
mydata[i]='\0';
LMIC_setTxData2(1, mydata, strlen(buf), 0);
}
// Schedule a timed job to run at the given timestamp (absolute system time)
os_setTimedCallback(j, os_getTime()+sec2osticks(10), do_send); //orig: 20s
}
void setup() {
// LMIC init
wiringPiSetup();
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.
LMIC_setSession (0x1, DEVADDR, (u1_t*)DEVKEY, (u1_t*)ARTKEY);
// Disable data rate adaptation
LMIC_setAdrMode(0);
// Disable link check validation
LMIC_setLinkCheckMode(0);
// Disable beacon tracking
LMIC_disableTracking ();
// Stop listening for downstream data (periodical reception)
LMIC_stopPingable();
// Set data rate and transmit power (note: txpow seems to be ignored by the library)
LMIC_setDrTxpow(DR_SF7,14);
//
}
void loop() {
do_send(&sendjob);
while(1) {
os_runloop();
// os_runloop_once();
}
}
int main() {
setup();
while (1) {
loop();
}
return 0;
}
