LoRa Feather code:
/*******************************************************************************
* 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.
*
*******************************************************************************/
#include <lmic.h>
#include <hal/hal.h>
#include <SPI.h>
#define ENABLE_PRINT
// LoRaWAN NwkSKey, network session key. string -> uint8 array
// This is the default Semtech key, which is used by the early prototype TTN
// network.
static const PROGMEM u1_t NWKSKEY[16] = { };
// LoRaWAN AppSKey, application session key
// This is the default Semtech key, which is used by the early prototype TTN
// network.
static const u1_t PROGMEM APPSKEY[16] = { };
// LoRaWAN end-device address (DevAddr); // <-- Change this address for every node!
// 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[] = "1C1B";
static osjob_t sendjob;
// Schedule TX every this many seconds (might become longer due to duty
// cycle limitations).
const unsigned TX_INTERVAL = 1;
// Pin mapping
const lmic_pinmap lmic_pins = {
.nss = 8,
.rxtx = LMIC_UNUSED_PIN,
.rst = 4,
.dio = {7, 6, LMIC_UNUSED_PIN},
};
void onEvent (ev_t ev) {
#ifdef ENABLE_PRINT
Serial.print(os_getTime());
#endif
switch(ev) {
case EV_TXCOMPLETE:
#ifdef ENABLE_PRINT
Serial.println(F(": TXComplete"));
#endif
if (LMIC.txrxFlags & TXRX_ACK)
#ifdef ENABLE_PRINT
Serial.println(F("Received Ack"));
#endif
//if (LMIC.dataLen) {
//Serial.println(LMIC.dataLen);}
// Schedule next transmission
os_setTimedCallback(&sendjob, os_getTime()+sec2osticks(TX_INTERVAL), do_send);
break;
default:
#ifdef ENABLE_PRINT
Serial.println(F("Unknown event"));
#endif
break;
}
}
void do_send(osjob_t* j){
// Check if there is not a current TX/RX job running
Serial.println("INdoSend");
int readPin = 0;
int ledPin = 13;
pinMode(readPin, INPUT);
pinMode(ledPin, OUTPUT);
int check = 0;
if (LMIC.opmode & OP_TXRXPEND) {
#ifdef ENABLE_PRINT
Serial.println(F("OP_TXRXPEND, not sending"));
#endif
} else {
Serial.println("Waiting For Input");
do{
delay(1);
while (readPin == LOW);{
int val = digitalRead(readPin); // read the input pin
delay(1); }
}
while (readPin == HIGH);{
check = 1;
}
if (check == 1){
//turn on led if signal recieved
digitalWrite(13, HIGH);
delay(600);
digitalWrite(1, LOW);
// Prepare upstream data transmission at the next possible time.
#define VBATPIN A9
float measuredvbat = analogRead(VBATPIN);
measuredvbat *= 2; // we divided by 2, so multiply back
measuredvbat *= 3.3; // Multiply by 3.3V, our reference voltage
measuredvbat /= 1024; // convert to voltage
byte buffer[8];
dtostrf(measuredvbat, 1, 2, buffer);
String res = buffer;
res.getBytes(buffer, res.length() + 1);
#ifdef ENABLE_PRINT
Serial.print("VBat: " ); Serial.println(measuredvbat);
#endif
LMIC_setTxData2(1, (const uint8_t*) mydata, res.length(), 60);
#ifdef ENABLE_PRINT
Serial.println(F("Packet queued"));
#endif
}
// Next TX is scheduled after TX_COMPLETE event.
}
}
void setup() {
delay(1000);
#ifdef ENABLE_PRINT
while(!Serial);
Serial.begin(115200);
#endif
// LMIC init
os_init();
// Reset the MAC state. Session and pending data transfers will be discarded.
LMIC_reset();
LMIC_setClockError(MAX_CLOCK_ERROR * 1 / 100);
// 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
//#if defined(CFG_eu868)
// 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.
// NA-US channels 0-71 are configured automatically
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.
// Disable link check validation
LMIC_setLinkCheckMode(0);
// 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();
}
