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Initial commit for sketch files

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lightaprs 2021-10-06 21:55:31 +03:00
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lora-asset-tracker-rx/lora-asset-tracker-rx.ino 100644
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#include <RadioLib.h>
#include <avr/dtostrf.h>
#include <Adafruit_BMP085.h>
#include "SparkFun_Ublox_Arduino_Library.h"
#include <SPI.h>
#include <MemoryFree.h>;
#include <Adafruit_SSD1306.h>
#include <math.h>
#include <Wire.h>
#define d2r (M_PI / 180.0)
// SX1262 has the following connections:
// NSS pin: 8
// DIO1 pin: 3
// NRST pin: 9
// BUSY pin: 2
SX1262 lora = new Module(8, 3, 9, 2);
#define BattPin A5
#define GpsPwr 12
#define GpsON digitalWrite(GpsPwr, LOW);
#define GpsOFF digitalWrite(GpsPwr, HIGH);
SFE_UBLOX_GPS myGPS;
Adafruit_BMP085 bmp;
//#define DEVMODE // Development mode. Uncomment to enable for debugging.
//*********** General Settings ***********//
int measurementSystem = 0; //0 for metric (meters, km, Celcius, etc.), 1 for imperial (feet, mile, Fahrenheit,etc.)
float battMin=2.7; // min volts to run.
//********** GPS (uBlox) Settings ****************//
uint8_t navigationFrequencyGPS = 1; //1-10. Set the number of GPS nav solutions sent per second. 10 is max and provide 10 GPS data per second.
//*********** LoRa Settings ***********//
//Following frequencies were chosen arbitrarily; and should be same on the reciever (RX) module.
//If necessary, users can select the appropriate channels according to their country regulations.
float loraFrequency = 865.2; //EU863-870
//float loraFrequency = 907.4; //US902-928
int8_t outputPower = 16; //dBm (max outputPower is 16 dBm for EU868, AS923, KR920, RU864)
//int8_t outputPower = 22; //dBm (max outputPower is 30 dBm for US915, AU915, IN865 but device limit is 22 dBm)
float loraBandWith = 125.0f; //do not change this, this is optimum for default payload size. //https://avbentem.github.io/airtime-calculator/
uint8_t spreadingFactor = 8; ////do not change this, SF8 is optimum for default payload size. https://www.thethingsnetwork.org/docs/lorawan/spreading-factors/
uint8_t codingRate = 5; //do not change this
uint8_t syncWord = 0x12; //(private network)
uint16_t preambleLength = 8; //do not change this
int8_t lowDataRateOptimization = 0; //do not change this
float dutyCyle = 0.01; //https://www.thethingsnetwork.org/docs/lorawan/duty-cycle.html
int8_t loRaWANHeaderSize = 0; // aka overhead size, 13 for LoRAWAN, 0 for LoRa
int explcttHdr = 0; //1 for LoRaWAN, 0 for LoRa
int8_t CRC = 1; //do not change this
//********** OLED Display Settings ****************//
#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels
// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
#define OLED_RESET -1 // Reset pin # (or -1 if sharing Arduino reset pin)
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
int displayPageID = 2;
int displayInterval = 8;
uint32_t last_display_refreshed = 0;
//*********** Temp Veriables ***********//
int rxCount = 0; //do not change this. counting LoRa RX messages...
float maxAltitude = 0; //do not change this.
float minPressure = 0; //do not change this.
// flag to indicate that a packet was received
volatile bool receivedFlag = false; //do not change this.
// disable interrupt when it's not needed
volatile bool enableInterrupt = true; //do not change this.
uint32_t last_packet_send = 0; //do not change this. Last LoRa packet sent time
uint32_t last_packet_received = 0; //do not change this. Last LoRa packet received time
static char tempUnit[2] = ""; //C or F
static char speedUnit[7] = ""; //km/h or mph (mile per hour)
static char altUnit[5] = ""; //meters or feet
static char distUnit[5] = ""; //km or mile
static char measureSystem[10] = ""; //Metric or Imperial
//latitude,longtitude,altitude,sattelite,speed,bearing,voltage,temp,pressure,etc. / 22 packets
typedef union {
float f[22]; // Assigning fVal.f will also populate fVal.bytes;
unsigned char bytes[4]; // Both fVal.f and fVal.bytes share the same 4 bytes of memory.
} floatArr2Val;
floatArr2Val telemetry;
void setup() {
pinMode(A1,INPUT_PULLUP);
if(digitalRead(A1)==LOW) while(1);
delay(5000);
pinMode(GpsPwr, OUTPUT);
GpsON;
SerialUSB.begin(115200);
// Wait up to 5 seconds for serial to be opened, to allow catching
// startup messages on native USB boards (that do not reset when
// serial is opened).
unsigned long start = millis();
while (millis() - start < 5000 && !SerialUSB);
SerialUSB.println();
SerialUSB.println(F("Starting"));
SerialUSB.println();
SerialUSB.println(F("LoRa setup initiating.."));
setupLoRa();
//printLoRaSettings();
SerialUSB.println(F("GPS setup initiating..(NO GPS fix yet)"));
setupGPS_BMP();
delay(2000);
setupDisplay();
}
// this function is called when a complete packet
// is received by the module
// IMPORTANT: this function MUST be 'void' type
// and MUST NOT have any arguments!
void setFlag(void) {
// check if the interrupt is enabled
if(!enableInterrupt) {
return;
}
// we got a packet, set the flag
receivedFlag = true;
}
void loop() {
if (readBatt() > battMin) {
if(receivedFlag) {
displayIncmng();
// disable the interrupt service routine while
// processing the data
enableInterrupt = false;
// reset flag
receivedFlag = false;
// you can read received data as an Arduino String if sent as string...
//String str;
//int state = lora.readData(str);
// you can also read received data as byte array
byte byteArr[sizeof(telemetry)];
int state = lora.readData(byteArr, sizeof(telemetry));
byte tempData[4];
int x = 0;
for (int i = 0; i < sizeof(telemetry); i++) {
tempData[x] = byteArr[i];
if(x == 3) {
telemetry.f[(int)(i/4)] = *((float*)(tempData));
x=0;
} else {
++x;
}
}
if (state == ERR_NONE) {
// packet was successfully received
last_packet_received = millis();
// print data of the packet
displayPageID = 1;
printRXTelemetry();
printLoRaSettings();
++rxCount;
} else if (state == ERR_CRC_MISMATCH) {
// packet was received, but is malformed
SerialUSB.println(F("CRC error!"));
displayIncmngError();
} else {
// some other error occurred
SerialUSB.print(F("failed, code "));
SerialUSB.println(state);
}
// put module back to listen mode
lora.startReceive();
// we're ready to receive more packets,
// enable interrupt service routine
enableInterrupt = true;
freeMem();
}
//update GPS data
myGPS.getPVT();
#if defined(DEVMODE)
printGPSData();
#endif
//update oled display
if (millis() - last_display_refreshed > (displayInterval * 1000)) {
printDisplay(displayPageID);
last_display_refreshed = millis();
++displayPageID;
if(displayPageID == 6) {
displayPageID = 2;
}
}
} else {
SerialUSB.println(F("Voltage is too low, please check your battery..."));
}
}
void displayIncmng(){
display.clearDisplay();
display.setCursor(0, 30);
display.println("Incoming packet...");
display.display();
}
void displayIncmngError(){
display.clearDisplay();
display.setCursor(0, 30);
display.println("CRC Error, packet malformed..");
display.display();
}
void printDisplay(int pageID){
display.clearDisplay();
display.setCursor(0, 0);
float tempAltitude = 0;
float tempSpeed = 0;
float tempTemperature = 0;
double distance = 0;
if(measurementSystem == 0){ //Metric
//meter
tempAltitude = myGPS.getAltitude() / 1000.f;
//km/hour
tempSpeed = myGPS.getGroundSpeed() * 0.0036f;
//Celsius
tempTemperature = bmp.readTemperature();
} else { //Imperial
//feet
tempAltitude = (myGPS.getAltitude() * 3.2808399) / 1000.f;
//mile/hour
tempSpeed = myGPS.getGroundSpeed() * 0.00223694f;
//Fahrenheit
tempTemperature = (bmp.readTemperature() * 1.8f) + 32;
}
if ((myGPS.getFixType() !=0) && (myGPS.getSIV() > 3)) {
if(telemetry.f[0] ==0 || telemetry.f[1] ==0){
distance = 0;
} else {
distance = haversine(telemetry.f[0], telemetry.f[1], myGPS.getLatitude() / 10000000.f, myGPS.getLongitude() / 10000000.f, measurementSystem);
}
}
//SerialUSB.println(last_packet_received);
int lastPcktTimeSeconds = (int)((millis()-last_packet_received)/1000);
//SerialUSB.println(lastPcktTimeSeconds);
if(last_packet_received==0) {lastPcktTimeSeconds=0;}
int lastPcktTimeMinutes = lastPcktTimeSeconds / 60 ;
//SerialUSB.println(lastPcktTimeMinutes);
//SerialUSB.println("--------------------");
switch(pageID) {
case 1:
display.println("New Packet Recieved");
display.println("");
display.print("ID :");display.println((int)telemetry.f[21]);
display.print("RX/TX :");display.print(rxCount);display.print("/");display.println((int)telemetry.f[20]);
display.print("RSSI :");display.print(lora.getRSSI()); display.println(" dBm");
display.print("SNR :");display.print(lora.getSNR()); display.println(" dB");
display.print("PcktLngth:");display.print(lora.getPacketLength()); display.println(" bytes");
break;
case 2:
display.println("RX Basic Data (1/3)");
display.println("");
display.print("Battery :");display.print(telemetry.f[6]); display.println("V");
display.print("Temp :");display.print(telemetry.f[7]);display.println(tempUnit);
display.print("Pressure :");display.print(telemetry.f[8]); display.println("hPa");
if(lastPcktTimeSeconds < 100) {
display.print("Last Pckt:");display.print(lastPcktTimeSeconds); display.println(" secs ago");
} else {
display.print("Last Pckt:");display.print(lastPcktTimeMinutes); display.println(" mins ago");
}
break;
case 3:
display.println("RX GPS Data (2/3)");
display.println("");
display.print("GPS Sats :");display.println((int)telemetry.f[3]);
display.print("Speed :");display.print(telemetry.f[5]);display.println(speedUnit);
display.print("Heading :");display.print((int)telemetry.f[4]);display.println(" degrees");
display.print("Altitude :");display.print((int)telemetry.f[2]);display.println(altUnit);
display.print("Latitude :");display.println(telemetry.f[0]);
display.print("Longitude:");display.println(telemetry.f[1]);
break;
case 4:
display.println("RX G Data (3/3)");
display.println("");
display.print("MnX:");display.print(telemetry.f[12]);display.print(" MxX:");display.println(telemetry.f[13]);
display.print("MnY:");display.print(telemetry.f[14]);display.print(" MxY:");display.println(telemetry.f[15]);
display.print("MnZ:");display.print(telemetry.f[16]);display.print(" MxZ:");display.println(telemetry.f[17]);
display.print("Min Press:");display.print(telemetry.f[19]);display.println("hPa");
display.print("Max Alt:");display.print(telemetry.f[18]);display.println(altUnit);
break;
case 5:
display.println("Your Data");
display.println("");
display.print("GPS Sats :");display.println((int)myGPS.getSIV());
display.print("Speed :");display.print(tempSpeed);display.println(speedUnit);
display.print("Altitude :");display.print((int)tempAltitude);display.println(altUnit);
display.print("Battery :");display.print(readBatt()); display.println("V");
display.print("Temp :");display.print(tempTemperature);display.println(tempUnit);
display.print("Distance :");display.print(distance);display.println(distUnit);
break;
default:
SerialUSB.println("default");
break;
}
display.display();
}
//calculate haversine distance for linear distance
double haversine(double lat1, double long1, double lat2, double long2, boolean km)
{
double distance = 0;
double dlong = (long2 - long1) * d2r;
double dlat = (lat2 - lat1) * d2r;
double a = pow(sin(dlat/2.0), 2) + cos(lat1*d2r) * cos(lat2*d2r) * pow(sin(dlong/2.0), 2);
double c = 2 * atan2(sqrt(a), sqrt(1-a));
if (km) {
distance = 6367 * c; //km
} else {
distance = 3956 * c; //miles
}
return distance;
}
void printRXTelemetry() {
SerialUSB.println(F("-------Incoming Packet Telemetry-------"));
SerialUSB.print(F("lat :"));
SerialUSB.println(telemetry.f[0]);
SerialUSB.print(F("long :"));
SerialUSB.println(telemetry.f[1]);
SerialUSB.print(F("alt :"));
SerialUSB.println(telemetry.f[2]);
SerialUSB.print(F("sats :"));
SerialUSB.println((int)telemetry.f[3]);
SerialUSB.print(F("heading:"));
SerialUSB.println((int)telemetry.f[4]);
SerialUSB.print(F("speed :"));
SerialUSB.println(telemetry.f[5]);
SerialUSB.print(F("batt :"));
SerialUSB.println(telemetry.f[6]);
SerialUSB.print(F("temp :"));
SerialUSB.println(telemetry.f[7]);
SerialUSB.print(F("press :"));
SerialUSB.println(telemetry.f[8]);
SerialUSB.print(F("scaledGX :"));
SerialUSB.println(telemetry.f[9]);
SerialUSB.print(F("scaledGY :"));
SerialUSB.println(telemetry.f[10]);
SerialUSB.print(F("scaledGZ :"));
SerialUSB.println(telemetry.f[11]);
SerialUSB.print(F("minScaledGX :"));
SerialUSB.println(telemetry.f[12]);
SerialUSB.print(F("maxScaledGX :"));
SerialUSB.println(telemetry.f[13]);
SerialUSB.print(F("minScaledGY :"));
SerialUSB.println(telemetry.f[14]);
SerialUSB.print(F("maxScaledGY :"));
SerialUSB.println(telemetry.f[15]);
SerialUSB.print(F("minScaledGZ :"));
SerialUSB.println(telemetry.f[16]);
SerialUSB.print(F("maxScaledGZ :"));
SerialUSB.println(telemetry.f[17]);
SerialUSB.print(F("maxAltitude :"));
SerialUSB.println(telemetry.f[18]);
SerialUSB.print(F("minPressure :"));
SerialUSB.println(telemetry.f[19]);
SerialUSB.print(F("rxC :"));
SerialUSB.println((int)telemetry.f[20]);
SerialUSB.print(F("trackerID :"));
SerialUSB.println((int)telemetry.f[21]);
}
void printLoRaSettings(){
SerialUSB.println(F("-------------------------Incoming Packet LoRa Settings ---------------------------------------------------------"));
SerialUSB.print(F("RSSI: "));
SerialUSB.print(lora.getRSSI());
SerialUSB.print(F(" dBm"));
SerialUSB.print(F(", SNR: "));
SerialUSB.print(lora.getSNR());
SerialUSB.print(F(" dB"));
SerialUSB.print(F(", Freq: "));
SerialUSB.print(loraFrequency);
SerialUSB.print(F("mHz, Bandwith: "));
SerialUSB.print(loraBandWith);
SerialUSB.print(F("kHz, SF: "));
SerialUSB.print(spreadingFactor);
SerialUSB.print(F(", Power: "));
SerialUSB.print(outputPower);
SerialUSB.print(F("dBm, Payload Size: "));
SerialUSB.print(sizeof(telemetry));
SerialUSB.println(F(" bytes"));
SerialUSB.println(F("---------------------------------------------------------------------------------------------------------------"));
}
void setupLoRa() {
// initialize SX1262 with default settings
SerialUSB.print(F("[SX1262] LoRa Radio Module Initializing ... "));
int state = lora.begin();
if (state == ERR_NONE) {
SerialUSB.println(F("success!"));
} else {
SerialUSB.print(F("failed, code "));
SerialUSB.println(state);
while (true);
}
if (lora.setFrequency(loraFrequency,true) == ERR_INVALID_FREQUENCY) {
SerialUSB.println(F("Selected frequency is invalid for this module!"));
while (true);
}
// set bandwidth to 1250 kHz
if (lora.setBandwidth(loraBandWith) == ERR_INVALID_BANDWIDTH) {
SerialUSB.println(F("Selected bandwidth is invalid for this module!"));
while (true);
}
// set spreading factor to 10
if (lora.setSpreadingFactor(spreadingFactor) == ERR_INVALID_SPREADING_FACTOR) {
SerialUSB.println(F("Selected spreading factor is invalid for this module!"));
while (true);
}
// set coding rate to 5
if (lora.setCodingRate(codingRate) == ERR_INVALID_CODING_RATE) {
SerialUSB.println(F("Selected coding rate is invalid for this module!"));
while (true);
}
// set LoRaWAN sync word to 0x34
if (lora.setSyncWord(syncWord) != ERR_NONE) {
SerialUSB.println(F("Unable to set sync word!"));
while (true);
}
// set over current protection limit to 140 mA (accepted range is 45 - 240 mA)
if (lora.setCurrentLimit(140) == ERR_INVALID_CURRENT_LIMIT) {
Serial.println(F("Selected current limit is invalid for this module!"));
while (true);
}
// set output power to 14 dBm (accepted range is -17, 22 dBm)
if (lora.setOutputPower(outputPower) == ERR_INVALID_OUTPUT_POWER) {
SerialUSB.println(F("Selected output power is invalid for this module!"));
while (true);
}
// set LoRa preamble length to 8 symbols (accepted range is 0 - 65535)
if (lora.setPreambleLength(preambleLength) == ERR_INVALID_PREAMBLE_LENGTH) {
SerialUSB.println(F("Selected preamble length is invalid for this module!"));
while (true);
}
// enable CRC
if (lora.setCRC(CRC) == ERR_INVALID_CRC_CONFIGURATION) {
SerialUSB.println(F("Selected CRC is invalid for this module!"));
while (true);
}
SerialUSB.println(F("All settings succesfully changed!"));
// set the function that will be called
// when new packet is received
lora.setDio1Action(setFlag);
// start listening for LoRa packets
SerialUSB.print(F("[SX1262] LoRa Radio Module Starting to listen ... "));
state = lora.startReceive();
if (state == ERR_NONE) {
SerialUSB.println(F("success!"));
} else {
SerialUSB.print(F("failed, code "));
SerialUSB.println(state);
while (true);
}
}
float readBatt() {
float R1 = 560000.0; // 560K
float R2 = 100000.0; // 100K
float value = 0.0f;
do {
value =analogRead(BattPin);
value +=analogRead(BattPin);
value +=analogRead(BattPin);
value = value / 3.0f;
value = (value * 3.3) / 1024.0f;
value = value / (R2/(R1+R2));
} while (value > 10.0);
return value ;
}
void setupGPS_BMP() {
GpsON;
delay(100);
Wire.begin();
bmp.begin();
Wire.setClock(400000);
if (myGPS.begin() == false) //Connect to the Ublox module using Wire port
{
SerialUSB.println(F("Ublox GPS not detected at default I2C address. Please check wiring. Freezing."));
while (1)
;
}
// do not overload the buffer system from the GPS, disable UART output
myGPS.setUART1Output(0); //Disable the UART1 port output
myGPS.setUART2Output(0); //Disable Set the UART2 port output
myGPS.setI2COutput(COM_TYPE_UBX); //Set the I2C port to output UBX only (turn off NMEA noise)
//myGPS.enableDebugging(); //Enable debug messages over Serial (default)
myGPS.setNavigationFrequency(navigationFrequencyGPS);//Sadece roket için 10 yapalım. //Set output to 10 times a second
byte rate = myGPS.getNavigationFrequency(); //Get the update rate of this module
SerialUSB.print("Current GPS update rate:");
SerialUSB.println(rate);
myGPS.saveConfiguration(); //Save the current settings to flash and BBR
}
void setupDisplay(){
// SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally
if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // Address 0x3D for 128x64
SerialUSB.println(F("SSD1306 allocation failed"));
for(;;); // Don't proceed, loop forever
}
display.clearDisplay();
display.setTextSize(1); // Draw 2X-scale text
display.setTextColor(SSD1306_WHITE);
if(measurementSystem == 0){ //Metric
//meters
sprintf(altUnit, "%s", " m");
//km/hour
sprintf(speedUnit, "%s", " km/h");
//Celsius
sprintf(tempUnit, "%s", "C");
//km
sprintf(distUnit, "%s", " km");
//Metric
sprintf(measureSystem, "%s", "Metric");
} else { //Imperial
//feet
sprintf(altUnit, "%s", " ft");
//mile/hour
sprintf(speedUnit, "%s", " mph");
//Fahrenheit
sprintf(tempUnit, "%s", "F");
//mile
sprintf(distUnit, "%s", " mi");
//Imperial
sprintf(measureSystem, "%s", "Imperial");
}
}
void printGPSData()
{
// Calling getPVT returns true if there actually is a fresh navigation solution available.
byte fixType = myGPS.getFixType();
SerialUSB.print(F("FixType: "));
SerialUSB.print(fixType);
long latitude = myGPS.getLatitude();
float flat = myGPS.getLatitude() / 10000000.f;
SerialUSB.print(F(" Lat: "));
SerialUSB.print(latitude);
SerialUSB.print(F(" - "));
SerialUSB.print(flat);
long longitude = myGPS.getLongitude();
float flong = myGPS.getLongitude() / 10000000.f;
SerialUSB.print(F(" Long: "));
SerialUSB.print(longitude);
SerialUSB.print(F(" - "));
SerialUSB.print(flong);
float altitude = myGPS.getAltitude() / 1000;
SerialUSB.print(F(" Alt: "));
SerialUSB.print(altitude);
SerialUSB.print(F(" (m)"));
int SIV = myGPS.getSIV();
SerialUSB.print(F(" SIV: "));
SerialUSB.print(SIV);
float speed = myGPS.getGroundSpeed() * 0.0036f;
SerialUSB.print(F(" Speed: "));
SerialUSB.print(speed);
SerialUSB.print(F(" (km/h)"));
long heading = myGPS.getHeading() / 100000;
SerialUSB.print(F(" Heading: "));
SerialUSB.print(heading);
SerialUSB.print(F(" (degrees )"));
SerialUSB.print(" ");
SerialUSB.print(myGPS.getYear());
SerialUSB.print("-");
SerialUSB.print(myGPS.getMonth());
SerialUSB.print("-");
SerialUSB.print(myGPS.getDay());
SerialUSB.print(" ");
SerialUSB.print(myGPS.getHour());
SerialUSB.print(":");
SerialUSB.print(myGPS.getMinute());
SerialUSB.print(":");
SerialUSB.print(myGPS.getSecond());
SerialUSB.print(":");
SerialUSB.print(myGPS.getMillisecond());
SerialUSB.println();
delay(1000);
}
void freeMem() {
#if defined(DEVMODE)
SerialUSB.print(F("Free RAM: ")); SerialUSB.print(freeMemory(), DEC); SerialUSB.println(F(" byte"));
#endif
}

830
lora-asset-tracker-tx/lora-asset-tracker-tx.ino 100644
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#include <RadioLib.h>
#include <avr/dtostrf.h>
#include <Adafruit_BMP085.h>
#include "SparkFun_Ublox_Arduino_Library.h"
#include "SparkFunLIS3DH.h"
#include <SPI.h>
#include <MemoryFree.h>;
#include <Adafruit_SSD1306.h>
// SX1262 LoRa Module has the following connections:
// NSS pin: 8
// DIO1 pin: 3
// NRST pin: 9
// BUSY pin: 2
SX1262 lora = new Module(8, 3, 9, 2);
#define BattPin A5
#define GpsPwr 12
#define GpsON digitalWrite(GpsPwr, LOW);
#define GpsOFF digitalWrite(GpsPwr, HIGH);
SFE_UBLOX_GPS myGPS;
Adafruit_BMP085 bmp;
LIS3DH myIMU; //Default constructor is I2C, addr 0x19.
//#define DEVMODE // Development mode. Uncomment to enable for debugging.
boolean airborne = false; //if you want to put the tracker on a airborne device, set this variable true;
//*********** General Settings ***********//
uint16_t trackerID = 1234; //change this and set a random unique trackerID to avoid conflicts if you have multiple trackers.
uint16_t loRaTXinterval=60; //time interval (seconds) between two beacons (TX). This value is updated (increased) based on your LoRa Region settings and duty cycle.
uint8_t measurementSystem = 0; //0 for metric (meters, km, Celcius, etc.), 1 for imperial (feet, mile, Fahrenheit,etc.)
float battMin=2.7;// min volts to run.
//*********** LoRa Settings ***********//
//following TX settings should be same on the reciever module,
//otherwise RX module can not recieve LoRa packets.
boolean loRaEnabled = true;
//Following frequencies were chosen arbitrarily; and should be same on the reciever (RX) module.
//If necessary, users can select the appropriate channels according to their country regulations.
float loraFrequency = 865.2; //EU863-870
//float loraFrequency = 907.4; //US902-928
int8_t outputPower = 16; //dBm (max outputPower is 16 dBm for EU868, AS923, KR920, RU864)
//int8_t outputPower = 22; //dBm (max outputPower is 30 dBm for US915, AU915, IN865 but device limit is 22 dBm)
float loraBandWith = 125.0f; //do not change this, 125kHz is optimum for default payload size. //https://avbentem.github.io/airtime-calculator/
uint8_t spreadingFactor = 8; ////do not change this, SF8 is optimum for default payload size. https://www.thethingsnetwork.org/docs/lorawan/spreading-factors/
uint8_t codingRate = 5; //do not change this
uint8_t syncWord = 0x12; //(private network)
uint16_t preambleLength = 8; //do not change this
int8_t lowDataRateOptimization = 0; //do not change this
float dutyCyle = 0.01; //https://www.thethingsnetwork.org/docs/lorawan/duty-cycle.html
int8_t loRaWANHeaderSize = 0; // aka overhead size, 13 for LoRAWAN, 0 for LoRa
int explcttHdr = 0; //1 for LoRaWAN, 0 for LoRa
int8_t CRC = 1; //do not change this
//latitude,longtitude,altitude,sattelite,speed,bearing,voltage,temp,pressure,etc. / 22 packets x 4 = 88 bytes
typedef union {
float f[22]; // Assigning fVal.f will also populate fVal.bytes;
unsigned char bytes[4]; // Both fVal.f and fVal.bytes share the same 4 bytes of memory.
} floatArr2Val;
floatArr2Val telemetry;
//********** GPS (uBlox) Settings ****************//
uint8_t navigationFrequencyGPS = 10; //1-10. Set the number of GPS nav solutions sent per second. 10 is max and provide 10 GPS data per second.
#define defaultMaxWait 100 //do not change this. Overriding UBlox default setting (1100) to fetch data faster from GPS module via I2C
#define getPVTmaxWait 100 //do not change this. Overriding UBlox default setting (1100) to fetch data faster from GPS module via I2C
//********** OLED Display Settings ****************//
#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels
// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
#define OLED_RESET -1 // Reset pin # (or -1 if sharing Arduino reset pin)
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
int displayPageID = 1;
int displayInterval = 5;
uint32_t last_display_refreshed = -10000;
//*********** Temp Veriables ***********//
boolean gpsFixed = false;
int txCount = 1; //do not change this. counting LoRa TX messages...
uint32_t last_packet_send = -60000; //do not change this. Last LoRa packet sent time
float maxAltitude = 0; //do not change this.
float minPressure = 101325; //do not change this.
float accelGX = 0;
float accelGY = 0;
float accelGZ = 0;
float minGX = 0;
float maxGX = 0;
float minGY = 0;
float maxGY = 0;
float minGZ = 0;
float maxGZ = 0;
float tempAltitude = 0;
float tempSpeed = 0;
float tempTemperature = 0;
float tempLatitude = 0;
float tempLongitude = 0;
float tempSats = 0;
float tempHeading = 0;
float tempVoltage = 0;
float tempPressure = 0;
static char tempUnit[2] = ""; //C or F
static char speedUnit[7] = ""; //km/h or mph (mile per hour)
static char altUnit[5] = ""; //meters or feet
static char distUnit[5] = ""; //km or mile
static char measureSystem[10] = ""; //Metric or Imperial
void setup() {
pinMode(A1,INPUT_PULLUP);
if(digitalRead(A1)==LOW) while(1);
delay(5000);
pinMode(GpsPwr, OUTPUT);
GpsON;
SerialUSB.begin(115200);
// Wait up to 5 seconds for serial to be opened, to allow catching
// startup messages on native USB boards (that do not reset when
// serial is opened).
unsigned long start = millis();
while (millis() - start < 5000 && !SerialUSB);
SerialUSB.println();
SerialUSB.println(F("Starting"));
SerialUSB.println();
SerialUSB.println(F("LoRa setup initiating.."));
setupLoRa();
printLoRaSettings();
SerialUSB.println(F("GPS setup initiating..(NO GPS fix yet)"));
setupGPS_BMP();
delay(2000);
if(airborne){
SerialUSB.println(F("Airborne mode initiated..."));
setupUBloxDynamicModel(); // Set the dynamic model to DYN_MODEL_AIRBORNE4g
}
SerialUSB.println(F("Accelerometer setup initiating.."));
setupAccel();
//OLED Display
setupDisplay();
freeMem();
printDisplay(4);
delay(7000);
}
void loop() {
if (readBatt() > battMin) {
if (myGPS.getPVT() && (myGPS.getFixType() !=0) && (myGPS.getSIV() > 3)) {
if(!gpsFixed){
SerialUSB.println(F("GPS Fixed..."));
gpsFixed = true;
}
}
#if defined(DEVMODE)
printGPSData();
#endif
updateTelemetry();
getAccelerometerData();
//update display
if (millis() - last_display_refreshed > (displayInterval * 1000)) {
printDisplay(displayPageID);
last_display_refreshed = millis();
++displayPageID;
if(displayPageID == 3) {
displayPageID = 1;
}
}
if(loRaEnabled) {
if (millis() - last_packet_send > (loRaTXinterval * 1000)) {
printDisplay(3);
sendLoraPacket();
printLoRaSettings();
last_packet_send = millis();
if(loraFrequency >= 863.f && loraFrequency <= 870.f){
calculateTransmitInterval();
}
delay(1000);
printDisplay(2);
last_display_refreshed = millis();
SerialUSB.print(F("Next TX is "));
SerialUSB.print(loRaTXinterval);
SerialUSB.println(F(" seconds later."));
freeMem();
}
}
} else {
SerialUSB.println(F("Voltage is too low, please check your battery..."));
}
}
void printDisplay(int pageID){
display.clearDisplay();
display.setCursor(0, 0);
switch(pageID) {
case 1:
static char fixMessage[10] = "";
if(myGPS.getFixType() !=0){
sprintf(fixMessage, "%s", "Fixed");
} else {
sprintf(fixMessage, "%s", "Not Fixed");
}
display.println("");
display.print("GPS Fix : ");display.println(fixMessage);
display.print("GPS Sats: ");display.println((int)tempSats);
display.print("Lat : ");display.println(tempLatitude);
display.print("Long : ");display.println(tempLongitude);
display.print("Altitude: ");display.print((int)tempAltitude);display.println(altUnit);
display.print("Speed : ");display.print((int)tempSpeed);display.println(speedUnit);
break;
case 2:
display.println("");
display.print("Battery :");display.print(tempVoltage); display.println("V");
display.print("Temp :");display.print(tempTemperature);display.println(tempUnit);
display.print("Pressure:");display.print(tempPressure); display.println("hPa");
display.print("TX Count:");display.println(txCount-1);
display.print("Next TX :");display.print(loRaTXinterval - ((millis() - last_packet_send)/1000)); display.println(" secs left");
break;
case 3:
display.println("");
display.println("");
display.println("LoRa Pckt Sending...");
display.println("");
break;
case 4:
display.println("");
display.print("Freq : ");display.print(loraFrequency);display.println("mHz");
display.print("SF : ");display.println(spreadingFactor);
display.print("Bandwith: ");display.print(loraBandWith);display.println("kHz");
display.print("Power : ");display.print(outputPower);display.println("dBm");
display.print("PcktSize: ");display.print(sizeof(telemetry));display.println(" bytes");
display.print("Measure : ");display.println(measureSystem);
break;
default:
SerialUSB.println("default");
break;
}
display.display();
}
void setupDisplay(){
// SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally
if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // Address 0x3D for 128x64
SerialUSB.println(F("SSD1306 allocation failed"));
for(;;); // Don't proceed, loop forever
}
display.clearDisplay();
display.setTextSize(1); // Draw 2X-scale text
display.setTextColor(SSD1306_WHITE);
if(measurementSystem == 0){ //Metric
//meters
sprintf(altUnit, "%s", " m");
//km/hour
sprintf(speedUnit, "%s", " km/h");
//Celsius
sprintf(tempUnit, "%s", "C");
//km
sprintf(distUnit, "%s", " km");
//Metric
sprintf(measureSystem, "%s", "Metric");
} else { //Imperial
//feet
sprintf(altUnit, "%s", " ft");
//mile/hour
sprintf(speedUnit, "%s", " mph");
//Fahrenheit
sprintf(tempUnit, "%s", "F");
//mile
sprintf(distUnit, "%s", " mi");
//Imperial
sprintf(measureSystem, "%s", "Imperial");
}
}
void setupAccel() {
//********** Acceloremeter (LSM303DLHC) Settings **************//
myIMU.settings.adcEnabled = 1;
myIMU.settings.accelSampleRate = 400; //Hz. Can be: 0,1,10,25,50,100,200,400,1600,5000 Hz
myIMU.settings.accelRange = 16; //Max G force readable. Can be: 2, 4, 8, 16
myIMU.settings.xAccelEnabled = 1;
myIMU.settings.yAccelEnabled = 1;
myIMU.settings.zAccelEnabled = 1;
//Call .begin() to configure the IMU
myIMU.begin();
delay(100);
}
void getAccelerometerData(){
accelGX = myIMU.readFloatAccelX();
accelGY = myIMU.readFloatAccelY();
accelGZ = myIMU.readFloatAccelZ();
if (accelGX < minGX) {
minGX = accelGX;
} else if (accelGX > maxGX) {
maxGX = accelGX;
}
if (accelGY < minGY) {
minGY = accelGY;
} else if (accelGY > maxGY) {
maxGY = accelGY;
}
if (accelGZ < minGZ) {
minGZ = accelGZ;
} else if (accelGZ > maxGZ) {
maxGZ = accelGZ;
}
}
// Same functionality as Arduino's standard map function, except using floats
float mapf(float x, float in_min, float in_max, float out_min, float out_max)
{
return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
}
void sendLoraPacket(){
SerialUSB.print(F("[SX1262] LoRa Radio Module Transmitting packet ... "));
int state = lora.transmit(telemetry.bytes,sizeof(telemetry));
if (state == ERR_NONE) {
// the packet was successfully transmitted
SerialUSB.println(F("success!"));
// print measured data rate
SerialUSB.print(F("[SX1262] Datarate:\t"));
SerialUSB.print(lora.getDataRate());
SerialUSB.println(F(" bps"));
} else if (state == ERR_PACKET_TOO_LONG) {
// the supplied packet was longer than 256 bytes
SerialUSB.println(F("too long!"));
} else if (state == ERR_TX_TIMEOUT) {
// timeout occured while transmitting packet
SerialUSB.println(F("timeout!"));
} else {
// some other error occurred
SerialUSB.print(F("failed, code "));
SerialUSB.println(state);
}
lora.sleep();
txCount++;
}
void updateTelemetry() {
if(measurementSystem == 0){ //Metric
//meters
tempAltitude = myGPS.getAltitude() / 1000.f;
//km/hour
tempSpeed = myGPS.getGroundSpeed() * 0.0036f;
//Celsius
tempTemperature = bmp.readTemperature();
} else { //Imperial
//feet
tempAltitude = (myGPS.getAltitude() * 3.2808399) / 1000.f;
//mile/hour
tempSpeed = myGPS.getGroundSpeed() * 0.00223694f;
//Fahrenheit
tempTemperature = (bmp.readTemperature() * 1.8f) + 32;
}
tempLatitude = myGPS.getLatitude() / 10000000.f;
tempLongitude = myGPS.getLongitude() / 10000000.f;
tempSats = myGPS.getSIV();
if ((tempSats > 4) && (tempAltitude > maxAltitude)) {
maxAltitude = tempAltitude;
}
tempHeading = myGPS.getHeading() / 100000;
tempVoltage = readBatt();
tempPressure = bmp.readPressure() / 100.0;
if (tempPressure < minPressure) {
minPressure = tempPressure;
}
//prepare data for LoRa communcation...
if(loRaEnabled) {
telemetry.f[0] = tempLatitude;
telemetry.f[1] = tempLongitude;
telemetry.f[2] = tempAltitude;
telemetry.f[3] = tempSats;
telemetry.f[4] = tempHeading;
telemetry.f[5] = tempSpeed;
telemetry.f[6] = tempVoltage;
telemetry.f[7] = tempTemperature;
telemetry.f[8] = tempPressure;
telemetry.f[9] = accelGX;
telemetry.f[10] = accelGY;
telemetry.f[11] = accelGZ;
telemetry.f[12] = minGX;
telemetry.f[13] = maxGX;
telemetry.f[14] = minGY;
telemetry.f[15] = maxGY;
telemetry.f[16] = minGZ;
telemetry.f[17] = maxGZ;
telemetry.f[18] = maxAltitude;
telemetry.f[19] = minPressure;
telemetry.f[20] = txCount;
telemetry.f[21] = trackerID;
}
#if defined(DEVMODE)
SerialUSB.println(F(""));
SerialUSB.print(F("Batt: "));
SerialUSB.print(tempVoltage);
SerialUSB.print(F(" Temp: "));
SerialUSB.print(tempTemperature);
SerialUSB.print(F(" Press: "));
SerialUSB.print(tempPressure);
SerialUSB.print(F(" GX: "));
SerialUSB.print(accelGX);
SerialUSB.print(F(" GY: "));
SerialUSB.print(accelGY);
SerialUSB.print(F(" GZ: "));
SerialUSB.println(accelGZ);
#endif
/**
#if defined(DEVMODE)
SerialUSB.println(F("----"));
SerialUSB.print(F("lat :"));
SerialUSB.println(telemetry.f[0]);
SerialUSB.print(F("long :"));
SerialUSB.println(telemetry.f[1]);
SerialUSB.print(F("alt :"));
SerialUSB.println(telemetry.f[2]);
SerialUSB.print(F("sats :"));
SerialUSB.println(telemetry.f[3]);
SerialUSB.print(F("course:"));
SerialUSB.println(telemetry.f[4]);
SerialUSB.print(F("speed :"));
SerialUSB.println(telemetry.f[5]);
SerialUSB.print(F("batt :"));
SerialUSB.println(telemetry.f[6]);
SerialUSB.print(F("temp :"));
SerialUSB.println(telemetry.f[7]);
SerialUSB.print(F("press :"));
SerialUSB.println(telemetry.f[8]);
SerialUSB.print(F("scaledGX :"));
SerialUSB.println(telemetry.f[9]);
SerialUSB.print(F("scaledGY :"));
SerialUSB.println(telemetry.f[10]);
SerialUSB.print(F("scaledGZ :"));
SerialUSB.println(telemetry.f[11]);
SerialUSB.print(F("minScaledGX :"));
SerialUSB.println(telemetry.f[12]);
SerialUSB.print(F("maxScaledGX :"));
SerialUSB.println(telemetry.f[13]);
SerialUSB.print(F("minScaledGY :"));
SerialUSB.println(telemetry.f[14]);
SerialUSB.print(F("maxScaledGY :"));
SerialUSB.println(telemetry.f[15]);
SerialUSB.print(F("minScaledGZ :"));
SerialUSB.println(telemetry.f[16]);
SerialUSB.print(F("maxScaledGZ :"));
SerialUSB.println(telemetry.f[17]);
SerialUSB.print(F("maxAltitude :"));
SerialUSB.println(telemetry.f[18]);
SerialUSB.print(F("minPressure :"));
SerialUSB.println(telemetry.f[19]);
SerialUSB.print(F("txCount :"));
SerialUSB.println(telemetry.f[20]);
SerialUSB.print(F("trackerID :"));
SerialUSB.println((int)telemetry.f[21]);
SerialUSB.println(F("----"));
#endif
*/
}
void setupLoRa() {
// initialize SX1262 with default settings
SerialUSB.print(F("[SX1262] Initializing ... "));
int state = lora.begin();
if (state == ERR_NONE) {
SerialUSB.println(F("success!"));
} else {
SerialUSB.print(F("failed, code "));
SerialUSB.println(state);
while (true);
}
if (lora.setFrequency(loraFrequency,true) == ERR_INVALID_FREQUENCY) {
SerialUSB.println(F("Selected frequency is invalid for this module!"));
while (true);
}
// set bandwidth to 1250 kHz
if (lora.setBandwidth(loraBandWith) == ERR_INVALID_BANDWIDTH) {
SerialUSB.println(F("Selected bandwidth is invalid for this module!"));
while (true);
}
// set spreading factor to 10
if (lora.setSpreadingFactor(spreadingFactor) == ERR_INVALID_SPREADING_FACTOR) {
SerialUSB.println(F("Selected spreading factor is invalid for this module!"));
while (true);
}
// set coding rate to 5
if (lora.setCodingRate(codingRate) == ERR_INVALID_CODING_RATE) {
SerialUSB.println(F("Selected coding rate is invalid for this module!"));
while (true);
}
// set LoRaWAN sync word to 0x34
if (lora.setSyncWord(syncWord) != ERR_NONE) {
SerialUSB.println(F("Unable to set sync word!"));
while (true);
}
// set over current protection limit to 140 mA (accepted range is 45 - 240 mA)
if (lora.setCurrentLimit(140) == ERR_INVALID_CURRENT_LIMIT) {
Serial.println(F("Selected current limit is invalid for this module!"));
while (true);
}
// set output power to outputPower dBm (accepted range is -17, 22 dBm)
if (lora.setOutputPower(outputPower) == ERR_INVALID_OUTPUT_POWER) {
SerialUSB.println(F("Selected output power is invalid for this module!"));
while (true);
}
// set LoRa preamble length to 8 symbols (accepted range is 0 - 65535)
if (lora.setPreambleLength(preambleLength) == ERR_INVALID_PREAMBLE_LENGTH) {
SerialUSB.println(F("Selected preamble length is invalid for this module!"));
while (true);
}
// enable CRC
if (lora.setCRC(CRC) == ERR_INVALID_CRC_CONFIGURATION) {
SerialUSB.println(F("Selected CRC is invalid for this module!"));
while (true);
}
SerialUSB.println(F("All settings succesfully changed!"));
}
float readBatt() {
float R1 = 560000.0; // 560K
float R2 = 100000.0; // 100K
float value = 0.0f;
do {
value =analogRead(BattPin);
value +=analogRead(BattPin);
value +=analogRead(BattPin);
value = value / 3.0f;
value = (value * 3.3) / 1024.0f;
value = value / (R2/(R1+R2));
} while (value > 10.0);
return value ;
}
void printLoRaSettings(){
SerialUSB.println(F("-------------------------------LoRa Settings-----------------------------------------"));
SerialUSB.print(F("Freq: "));
SerialUSB.print(loraFrequency);
SerialUSB.print(F("mHz, Bandwith: "));
SerialUSB.print(loraBandWith);
SerialUSB.print(F("kHz, SF: "));
SerialUSB.print(spreadingFactor);
SerialUSB.print(F(", Power: "));
SerialUSB.print(outputPower);
SerialUSB.print(F("dBm, Payload Size: "));
SerialUSB.print(sizeof(telemetry));
SerialUSB.println(F(" bytes"));
SerialUSB.println(F("------------------------------------------------------------------------------------"));
}
//Every radio device must be compliant with the regulated duty cycle limits. This applies to both nodes and gateways.
//In practice, this means that you should program your nodes in such a way, that they stay within the limits.
//The easiest way to do this, is to calculate how much airtime each message consumes using one of the many
//airtime calculators and use that information to choose a good transmit interval (duty cycle). https://www.thethingsnetwork.org/docs/lorawan/duty-cycle.html
//Following function checks and enforce duty cycle limits based on your LoRa settings so you can not break the law.
void calculateTransmitInterval(){
if(spreadingFactor>= 11){
lowDataRateOptimization = 1;
}
if (loraFrequency >=868.7 && loraFrequency <=869.2) {
dutyCyle = 0.001;
} else if (loraFrequency >=869.4 && loraFrequency <=869.65) {
dutyCyle = 0.1;
} else {
dutyCyle = 0.01;
}
float symbolDuration = pow(2, spreadingFactor) / (loraBandWith * 1000.f);
float a = (8 * (sizeof(telemetry) + loRaWANHeaderSize)) - (4 * spreadingFactor) + 28 + (16 * CRC) - (20 * (1-explcttHdr));
float b = 4 * (spreadingFactor - (2 * lowDataRateOptimization));
int nbrSymbols = ceil(a/b) * codingRate;
if (nbrSymbols < 0){
nbrSymbols = 0;
}
nbrSymbols += 8;
float preambuleDuration = (preambleLength + 4.25f) * symbolDuration;
float payloadDuration = nbrSymbols * symbolDuration;
float packetDuration = (preambuleDuration + payloadDuration) / dutyCyle;
if (loRaTXinterval < (int)packetDuration) {
#if defined(DEVMODE)
SerialUSB.print(F("Updating "));
SerialUSB.print(F("loRaTXinterval= "));
SerialUSB.print(loRaTXinterval);
SerialUSB.print(F(" to loRaTXinterval= "));
SerialUSB.print((int)packetDuration);
SerialUSB.println(F(" seconds..."));
#endif
loRaTXinterval = (int)(packetDuration);
}
}
void setupGPS_BMP() {
GpsON;
delay(100);
Wire.begin();
bmp.begin();
Wire.setClock(400000);
if (myGPS.begin() == false) //Connect to the Ublox module using Wire port
{
SerialUSB.println(F("Ublox GPS not detected at default I2C address. Please check wiring. Freezing."));
while (1)
;
}
// do not overload the buffer system from the GPS, disable UART output
myGPS.setUART1Output(0); //Disable the UART1 port output
myGPS.setUART2Output(0); //Disable Set the UART2 port output
myGPS.setI2COutput(COM_TYPE_UBX); //Set the I2C port to output UBX only (turn off NMEA noise)
//myGPS.enableDebugging(); //Enable debug messages over Serial (default)
myGPS.setNavigationFrequency(navigationFrequencyGPS);//Sadece roket için 10 yapalım. //Set output to 10 times a second
byte rate = myGPS.getNavigationFrequency(); //Get the update rate of this module
//SerialUSB.print("Current GPS update rate:");
//SerialUSB.println(rate);
myGPS.saveConfiguration(); //Save the current settings to flash and BBR
}
void setupUBloxDynamicModel() {
// If we are going to change the dynamic platform model, let's do it here.
// Possible values are:
// PORTABLE, STATIONARY, PEDESTRIAN, AUTOMOTIVE, SEA, AIRBORNE1g, AIRBORNE2g, AIRBORNE4g, WRIST, BIKE
//DYN_MODEL_AIRBORNE4g model increases ublox max. altitude limit from 12.000 meters to 50.000 meters.
if (myGPS.setDynamicModel(DYN_MODEL_AIRBORNE4g) == false) // Set the dynamic model to DYN_MODEL_AIRBORNE4g
{
SerialUSB.println(F("***!!! Warning: setDynamicModel failed !!!***"));
}
else
{
SerialUSB.print(F("Dynamic platform model changed successfully! : "));
SerialUSB.println(myGPS.getDynamicModel());
}
}
void freeMem() {
#if defined(DEVMODE)
SerialUSB.print(F("Free RAM: ")); SerialUSB.print(freeMemory(), DEC); SerialUSB.println(F(" byte"));
#endif
}
void printGPSData()
{
// Calling getPVT returns true if there actually is a fresh navigation solution available.
SerialUSB.println(F(""));
byte fixType = myGPS.getFixType();
SerialUSB.print(F("FixType: "));
SerialUSB.print(fixType);
long latitude = myGPS.getLatitude();
float flat = myGPS.getLatitude() / 10000000.f;
SerialUSB.print(F(" Lat: "));
SerialUSB.print(latitude);
SerialUSB.print(F(" - "));
SerialUSB.print(flat);
long longitude = myGPS.getLongitude();
float flong = myGPS.getLongitude() / 10000000.f;
SerialUSB.print(F(" Long: "));
SerialUSB.print(longitude);
SerialUSB.print(F(" - "));
SerialUSB.print(flong);
float altitude = myGPS.getAltitude() / 1000;
SerialUSB.print(F(" Alt: "));
SerialUSB.print(altitude);
SerialUSB.print(F(" (m)"));
int SIV = myGPS.getSIV();
SerialUSB.print(F(" SIV: "));
SerialUSB.print(SIV);
float speed = myGPS.getGroundSpeed() * 0.0036f;
SerialUSB.print(F(" Speed: "));
SerialUSB.print(speed);
SerialUSB.print(F(" (km/h)"));
long heading = myGPS.getHeading() / 100000;
SerialUSB.print(F(" Heading: "));
SerialUSB.print(heading);
SerialUSB.print(F(" (degrees )"));
SerialUSB.print(" ");
SerialUSB.print(myGPS.getYear());
SerialUSB.print("-");
SerialUSB.print(myGPS.getMonth());
SerialUSB.print("-");
SerialUSB.print(myGPS.getDay());
SerialUSB.print(" ");
SerialUSB.print(myGPS.getHour());
SerialUSB.print(":");
SerialUSB.print(myGPS.getMinute());
SerialUSB.print(":");
SerialUSB.print(myGPS.getSecond());
SerialUSB.print(":");
SerialUSB.print(myGPS.getMillisecond());
SerialUSB.println();
delay(1000);
}

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lorawan-otaa-asset-tracker/lorawan-otaa-asset-tracker.ino 100644
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#include <basicmac.h>
#include <hal/hal.h>
#include <Adafruit_BMP085.h>
#include "SparkFun_Ublox_Arduino_Library.h"
#include <MemoryFree.h>;
#include <CayenneLPP.h>
#include "SparkFunLIS3DH.h"
#include <Adafruit_SSD1306.h>
// SX1262 has the following connections:
#define nssPin 8
#define rstPin 9
#define dio1Pin 3
#define busyPin 2
#define BattPin A5
#define GpsPwr 12
#define GpsON digitalWrite(GpsPwr, LOW);
#define GpsOFF digitalWrite(GpsPwr, HIGH);
SFE_UBLOX_GPS myGPS;
Adafruit_BMP085 bmp; //temp and pressure sensor
LIS3DH myIMU; //accelerometer
//#define DEVMODE // Development mode. Uncomment to enable for debugging.
boolean airborne = false; //if you want to put the tracker on an airborne (balloon, drone, plane, etc.) device, set this variable true;
uint8_t measurementSystem = 0; //0 for metric (meters, km, Celcius, etc.), 1 for imperial (feet, mile, Fahrenheit,etc.)
//***************************** UPDATE HERE WITH YOUR DEVICE KEYS **************************************/
//You should copy device keys from Helium or TTN Console and update following keys. Please check out: https://github.com/lightaprs/LightTracker-1.0/wiki/Adding-Device-on-Helium-Console
// This EUI must be in little-endian format, so least-significant-byte (lsb)
// first. When copying an EUI from Helium Console or ttnctl output, this means to reverse the bytes.
static const u1_t PROGMEM DEVEUI[8]={0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; //helium or ttn
// This EUI must be in little-endian format, so least-significant-byte (lsb)
// first. When copying an EUI from Helium Console or ttnctl output, this means to reverse the bytes.
static const u1_t PROGMEM APPEUI[8]={0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; //helium or ttn
// This key should be in big endian format (or, since it is not really a
// number but a block of memory, endianness does not really apply). In practice, a key taken from Helium Console or ttnctl can be copied as-is.
static const u1_t PROGMEM APPKEY[16] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; //helium or ttn
//*****************************************************************************************************/
//************************** LoRaWAN Settings ********************
//DO NOT FORGET TO CHANGE YOUR REGION, DEFAULT REGION IS EU. Uncomment your region, but comment other regions
uint8_t Lorawan_region_code = REGCODE_EU868;//For EU
//uint8_t Lorawan_region_code = REGCODE_US915;//For North America
//uint8_t Lorawan_region_code = REGCODE_AS923;//For Asia
//uint8_t Lorawan_region_code = REGCODE_AU915;//For South America and Australia
//uint8_t Lorawan_region_code = REGCODE_IN865;//For India and Pakistan
const unsigned TX_INTERVAL = 60000; // Schedule TX every this many miliseconds (might become longer due to duty cycle limitations).
boolean gpsFixRequiredforTX = false; //By default GPS fix required for telemetry TX (but not required for OTAA join)
//Spreading Factor automatically selected by BasicMAC LoRaWAN Library. Keep this "true" if you want to use your tracker in urban areas.
//But if you are too far from the the gateways/hotspots then change it to "false"
boolean autoSF = true;
//try to keep telemetry size smaller than 51 bytes if possible. Default telemetry size is 45 bytes.
CayenneLPP telemetry(51);
u1_t os_getRegion (void) { return Lorawan_region_code; } //do not change this.
uint8_t channelNoFor2ndSubBand = 8; //do not change this. Used for US915 and AU915 / TTN and Helium
uint32_t last_packet = 0; //do not change this. Timestamp of last packet sent.
boolean ev_joined = false;
//pinmap for SX1262 LoRa module
#if !defined(USE_STANDARD_PINMAP)
const lmic_pinmap lmic_pins = {
.nss = nssPin,
.tx = LMIC_UNUSED_PIN,
.rx = LMIC_UNUSED_PIN,
.rst = rstPin,
.dio = {/* DIO0 */ LMIC_UNUSED_PIN, /* DIO1 */ dio1Pin, /* DIO2 */ LMIC_UNUSED_PIN},
.busy = busyPin,
.tcxo = LMIC_CONTROLLED_BY_DIO3,
};
#endif // !defined(USE_STANDARD_PINMAP)
//************************** uBlox GPS Settings ********************
long lastTime = 0; //Simple local timer. Limits amount if I2C traffic to Ublox module.
//********************************* Power Settings ******************************
int battWait=60; //seconds sleep if super capacitors/batteries are below battMin (important if power source is solar panel)
float battMin=2.7; // min Volts to TX.
//********************************* Misc Settings ******************************
int txCount = 1;
float voltage = 0;
float tempAltitudeLong = 0;
float tempAltitudeShort = 0;
float tempSpeed = 0;
float tempTemperature = 0;
float tempLatitude = 0;
float tempLongitude = 0;
float tempSats = 0;
float tempHeading = 0;
float tempPressure = 0;
static char tempUnit[2] = ""; //C or F
static char speedUnit[7] = ""; //km/h or mph (mile per hour)
static char altUnit[5] = ""; //meters or feet
static char distUnit[5] = ""; //km or mile
static char measureSystem[10] = ""; //km or mile
static char regionName[6] ="";
//********** OLED Display Settings ****************//
#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels
// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
#define OLED_RESET -1 // Reset pin # (or -1 if sharing Arduino reset pin)
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
int displayPageID = 1;
int displayInterval = 7;
uint32_t last_display_refreshed = -10000;
void setup() {
pinMode(A1,INPUT_PULLUP);
if(digitalRead(A1)==LOW) while(1);
delay(5000); //do not change this
pinMode(GpsPwr, OUTPUT);
SerialUSB.begin(115200);
// Wait up to 5 seconds for serial to be opened, to allow catching
// startup messages on native USB boards (that do not reset when
// serial is opened).
unsigned long start = millis();
while (millis() - start < 5000 && !SerialUSB);
SerialUSB.println();
SerialUSB.println(F("Starting"));
SerialUSB.println();
GpsON;
delay(1000);
SerialUSB.println(F("GPS setup"));
setupGPS_BMP();
delay(2000);
if(airborne){
SerialUSB.println(F("Airborne mode initiated..."));
setupUBloxDynamicModel(); // Set the dynamic model to DYN_MODEL_AIRBORNE4g
autoSF = false; //override LoRaWAN auto Spreading Factor selection setting
}
SerialUSB.println(F("Searching for GPS fix..."));
setupAccel();
//OLED Display
setupDisplay();
SerialUSB.println(F("LoRaWAN OTAA Login initiated..."));
startJoining();
SerialUSB.println(F("LoRaWAN OTAA Login successful..."));
printLoRaWANSettings();
//OLED Display
printDisplay(5);
delay(1000);
freeMem();
}
void loop() {
voltage = readBatt();
if (voltage > battMin) {
// Let LMIC handle LoRaWAN background tasks
os_runstep();
#if defined(DEVMODE)
printGPSandSensorData();
#endif
// If TX_INTERVAL passed, *and* our previous packet is not still
// pending (which can happen due to duty cycle limitations), send
// the next packet.
if ((millis() - last_packet > TX_INTERVAL && !(LMIC.opmode & (OP_JOINING|OP_TXRXPEND)))){
// Calling myGPS.getPVT() returns true if there actually is a fresh navigation solution available.
if ((myGPS.getPVT() && (myGPS.getFixType() !=0) && (myGPS.getSIV() > 0)) || !gpsFixRequiredforTX) {
updateTelemetry();
printDisplay(3);
sendLoRaWANPacket();
SerialUSB.println(F("LoRaWAN packet sent.."));
printLoRaWANSettings();
freeMem();
delay(1000);
displayPageID=2;
}
}
//update display
if (millis() - last_display_refreshed > (displayInterval * 1000)) {
printDisplay(displayPageID);
last_display_refreshed = millis();
++displayPageID;
if(displayPageID == 3) {
displayPageID = 1;
}
}
} else {
SerialUSB.println(F("Voltage is too low, please check your battery..."));
}
delay(1000);
}
void printDisplay(int pageID){
display.clearDisplay();
display.setCursor(0, 0);
switch(pageID) {
case 1:
static char fixMessage[10] = "";
if(myGPS.getFixType() !=0){
sprintf(fixMessage, "%s", "Fixed");
} else {
sprintf(fixMessage, "%s", "Not Fixed");
}
display.print("GPS Fix : ");display.println(fixMessage);
display.print("GPS Sats: ");display.println((int)myGPS.getSIV());
display.print("Lat : ");display.println(tempLatitude);
display.print("Long : ");display.println(tempLongitude);
display.print("Altitude: ");display.print((int)tempAltitudeLong);display.println(altUnit);
display.print("Speed : ");display.print((int)tempSpeed);display.println(speedUnit);
display.print("Battery : ");display.print(voltage); display.println("V");
break;
case 2:
display.print("Temp :");display.print(tempTemperature);display.println(tempUnit);
display.print("Pressure:");display.print(tempPressure); display.println("hPa");
display.print("TX Count:");display.println(txCount-1);
display.print("Freq. :");display.print(LMIC.freq/1000000.f);display.println("MHz");
display.print("SF&BW :");display.print(F("SF"));display.print(getSf(LMIC.rps) - SF7 + 7);display.print(F("BW"));display.println(125 << (getBw(LMIC.rps) - BW125));
display.print("TXPower :");display.println(LMIC.txpow + LMIC.brdTxPowOff);
if(txCount >1) {
display.print("Last TX :");display.print((millis() - last_packet)/1000); display.println(" secs ago");
}
break;
case 3:
display.println("");
display.println("");
display.println("Packet Sending...");
display.print("PcktSize: ");display.print(telemetry.getSize());display.println(" bytes");
display.println("");
break;
case 4:
display.println("");
display.println("LoRaWAN OTAA login");
display.println("initiated...");
display.println("");
display.print("Region ");display.println(regionName);
break;
case 5:
display.println("");
display.println("LoRaWAN OTAA login");
display.println("successful...");
display.println("");
display.print("Region ");display.println(regionName);
break;
default:
SerialUSB.println("default");
break;
}
display.display();
}
void setupDisplay(){
// SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally
if(!display.begin(SSD1306_SWITCHCAPVCC, 0x3C)) { // Address 0x3D for 128x64
SerialUSB.println(F("SSD1306 allocation failed"));
for(;;); // Don't proceed, loop forever
}
display.clearDisplay();
display.setTextSize(1); // Draw 2X-scale text
display.setTextColor(SSD1306_WHITE);
if(measurementSystem == 0){ //Metric
//meters
sprintf(altUnit, "%s", " m");
//km/hour
sprintf(speedUnit, "%s", " km/h");
//Celsius
sprintf(tempUnit, "%s", "C");
//km
sprintf(distUnit, "%s", " km");
//Metric
sprintf(measureSystem, "%s", "Metric");
} else { //Imperial
//feet
sprintf(altUnit, "%s", " ft");
//mile/hour
sprintf(speedUnit, "%s", " mph");
//Fahrenheit
sprintf(tempUnit, "%s", "F");
//mile
sprintf(distUnit, "%s", " m");
//Imperial
sprintf(measureSystem, "%s", "Imperial");
}
}
//to join LoRaWAN network, every region requires different parameters. Please refer to : https://lora-alliance.org/resource_hub/rp2-1-0-3-lorawan-regional-parameters/
void startJoining() {
// LMIC init
os_init(nullptr);
LMIC_reset();
// Start join
LMIC_startJoining();
//DO NOT CHANGE following code blocks unless you know what you are doing :)
//Europe
if(Lorawan_region_code == REGCODE_EU868) {
sprintf(regionName, "%s", "EU868");
if(!autoSF){
//DR2 (SF10 BW125kHz)
LMIC_setDrTxpow(2,KEEP_TXPOWADJ);
}
//Japan, Malaysia, Singapore, Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam
} else if (Lorawan_region_code == REGCODE_AS923) {
sprintf(regionName, "%s", "AS923");
if(!autoSF){
//DR2 (SF10 BW125kHz)
//For AS923, DR2 join only since max payload limit is 11 bytes.
LMIC_setDrTxpow(2,KEEP_TXPOWADJ);
}
//North and South America (Except Brazil)
} else if (Lorawan_region_code == REGCODE_US915) {
sprintf(regionName, "%s", "US915");
if(!autoSF){
//DR0 (SF10 BW125kHz)
//For US915, DR0 join only since max payload limit is 11 bytes.
LMIC_setDrTxpow(0,KEEP_TXPOWADJ);
}
//TTN and Helium only supports second sub band (channels 8 to 15)
//so we should force BasicMAC to initiate a join with second sub band channels.
LMIC_selectChannel(8);
//Australia and New Zeleand
} else if (Lorawan_region_code == REGCODE_AU915) {
sprintf(regionName, "%s", "AU915");
if(!autoSF){
//DR2 (SF10 BW125kHz)
//For AU915, DR2 join only since max payload limit is 11 bytes.
LMIC_setDrTxpow(2,KEEP_TXPOWADJ);
}
//TTN and Helium only supports second sub band (channels 8 to 15)
//so we should force BasicMAC to initiate a join with second sub band channels.
LMIC_selectChannel(8);
}
LMIC_setAdrMode(false); //do not enable ADR (Adaptive Data Rate), does not work for every region or gateway
LMIC_setLinkCheckMode(0);
// Make sure the first packet is scheduled ASAP after join completes
last_packet = millis() - TX_INTERVAL;
//OLED Display
printDisplay(4);
// Optionally wait for join to complete (uncomment this is you want
// to run the loop while joining).
while ((LMIC.opmode & (OP_JOINING))) {
os_runstep();
}
}
// Telemetry size is very important, try to keep it lower than 51 bytes. Always lower is better.
void sendLoRaWANPacket(){
//Europa
if(Lorawan_region_code == REGCODE_EU868) {
if(!autoSF){
if(telemetry.getSize() < 52) {
//DR2 (SF10 BW125kHz) max payload size is 51 bytes.
LMIC_setDrTxpow(2,KEEP_TXPOWADJ);
} else if (telemetry.getSize() < 116){
//DR3 (SF9 BW125kHz) max payload size is 115 bytes.
LMIC_setDrTxpow(3,KEEP_TXPOWADJ);
} else {
//DR4 (SF8 BW125kHz) max payload size is 222 bytes.
LMIC_setDrTxpow(4,KEEP_TXPOWADJ);
}
}
//Japan, Malaysia, Singapore, Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam
} else if (Lorawan_region_code == REGCODE_AS923) {
if(!autoSF){
if(telemetry.getSize() < 54) {
//DR3 (SF9 BW125kHz) max payload size is 53 bytes.
LMIC_setDrTxpow(3,KEEP_TXPOWADJ);
} else if (telemetry.getSize() < 126){
//DR4 (SF8 BW125kHz) max payload size is 125 bytes.
LMIC_setDrTxpow(4,KEEP_TXPOWADJ);
} else {
//DR5 (SF7 BW125kHz) max payload size is 222 bytes.
LMIC_setDrTxpow(5,KEEP_TXPOWADJ);
}
}
//North and South America (Except Brazil) or Australia and New Zeleand
} else if (Lorawan_region_code == REGCODE_US915 || Lorawan_region_code == REGCODE_AU915) {
if(!autoSF){
//North and South America (Except Brazil)
if (Lorawan_region_code == REGCODE_US915){
if(telemetry.getSize() < 54) {
//DR1 (SF9 BW125kHz) max payload size is 53 bytes.
LMIC_setDrTxpow(1,KEEP_TXPOWADJ);
} else if (telemetry.getSize() < 126){
//DR2 (SF8 BW125kHz) max payload size is 125 bytes.
LMIC_setDrTxpow(2,KEEP_TXPOWADJ);
} else {
//DR3 (SF7 BW125kHz) max payload size is 222 bytes.
LMIC_setDrTxpow(3,KEEP_TXPOWADJ);
}
//Australia and New Zeleand
} else if (Lorawan_region_code == REGCODE_AU915){
if(telemetry.getSize() < 54) {
//DR3 (SF9 BW125kHz) max payload size is 53 bytes.
LMIC_setDrTxpow(3,KEEP_TXPOWADJ);
} else if (telemetry.getSize() < 126){
//DR4 (SF8 BW125kHz) max payload size is 125 bytes.
LMIC_setDrTxpow(4,KEEP_TXPOWADJ);
} else {
//DR5 (SF7 BW125kHz) max payload size is 222 bytes.
LMIC_setDrTxpow(5,KEEP_TXPOWADJ);
}
}
}
//TTN and Helium only supports second sub band (channels 8 to 15)
//so we should force BasicMAC use second sub band channels.
LMIC_selectChannel(channelNoFor2ndSubBand);
++channelNoFor2ndSubBand;
if(channelNoFor2ndSubBand > 15) {
channelNoFor2ndSubBand = 8;
}
//India
} else if (Lorawan_region_code == REGCODE_IN865) {
if(!autoSF){
if(telemetry.getSize() < 52) {
//DR2 (SF10 BW125kHz) max payload size is 51 bytes.
LMIC_setDrTxpow(2,KEEP_TXPOWADJ);
} else if (telemetry.getSize() < 116){
//DR3 (SF9 BW125kHz) max payload size is 115 bytes.
LMIC_setDrTxpow(3,KEEP_TXPOWADJ);
} else {
//DR4 (SF8 BW125kHz) max payload size is 222 bytes.
LMIC_setDrTxpow(4,KEEP_TXPOWADJ);
}
}
}
LMIC_setAdrMode(false);
LMIC_setLinkCheckMode(0);
LMIC_setTxData2(1, telemetry.getBuffer(), telemetry.getSize(), 0);
last_packet = millis();
txCount++;
SerialUSB.println(F("Packet queued..."));
}
void setupAccel() {
myIMU.settings.adcEnabled = 1;
myIMU.settings.accelSampleRate = 400; //Hz. Can be: 0,1,10,25,50,100,200,400,1600,5000 Hz
myIMU.settings.accelRange = 16; //Max G force readable. Can be: 2, 4, 8, 16
myIMU.settings.xAccelEnabled = 1;
myIMU.settings.yAccelEnabled = 1;
myIMU.settings.zAccelEnabled = 1;
//Call .begin() to configure the IMU
myIMU.begin();
delay(100);
}
void setupGPS_BMP() {
GpsON;
delay(100);
Wire.begin();
bmp.begin();
Wire.setClock(400000);
if (myGPS.begin() == false) //Connect to the Ublox module using Wire port
{
SerialUSB.println(F("Ublox GPS not detected at default I2C address. Please check wiring. Freezing."));
while (1)
;
}
// do not overload the buffer system from the GPS, disable UART output
myGPS.setUART1Output(0); //Disable the UART1 port output
myGPS.setUART2Output(0); //Disable Set the UART2 port output
myGPS.setI2COutput(COM_TYPE_UBX); //Set the I2C port to output UBX only (turn off NMEA noise)
//myGPS.enableDebugging(); //Enable debug messages over Serial (default)
myGPS.setNavigationFrequency(2);//Set output to 2 times a second. Max is 10
byte rate = myGPS.getNavigationFrequency(); //Get the update rate of this module
SerialUSB.print("Current update rate for GPS: ");
SerialUSB.println(rate);
myGPS.saveConfiguration(); //Save the current settings to flash and BBR
}
void printGPSandSensorData()
{
lastTime = millis(); //Update the timer
byte fixType = myGPS.getFixType();
SerialUSB.print(F("FixType: "));
SerialUSB.print(fixType);
int SIV = myGPS.getSIV();
SerialUSB.print(F(" Sats: "));
SerialUSB.print(SIV);
float flat = myGPS.getLatitude() / 10000000.f;
SerialUSB.print(F(" Lat: "));
SerialUSB.print(flat);
float flong = myGPS.getLongitude() / 10000000.f;
SerialUSB.print(F(" Long: "));
SerialUSB.print(flong);
float altitude = myGPS.getAltitude() / 1000;
SerialUSB.print(F(" Alt: "));
SerialUSB.print(altitude);
SerialUSB.print(F(" (m)"));
//float speed = myGPS.getGroundSpeed() * 0.0036f;
//SerialUSB.print(F(" Speed: "));
//SerialUSB.print(speed);
//SerialUSB.print(F(" (km/h)"));
//long heading = myGPS.getHeading() / 100000;
//SerialUSB.print(F(" Heading: "));
//SerialUSB.print(heading);
//SerialUSB.print(F(" (degrees)"));
SerialUSB.print(" Time: ");
SerialUSB.print(myGPS.getYear());
SerialUSB.print("-");
SerialUSB.print(myGPS.getMonth());
SerialUSB.print("-");
SerialUSB.print(myGPS.getDay());
SerialUSB.print(" ");
SerialUSB.print(myGPS.getHour());
SerialUSB.print(":");
SerialUSB.print(myGPS.getMinute());
SerialUSB.print(":");
SerialUSB.print(myGPS.getSecond());
SerialUSB.print(" Temp: ");
SerialUSB.print(bmp.readTemperature());
SerialUSB.print(" C");
SerialUSB.print(" Press: ");
SerialUSB.print(bmp.readPressure() / 100.0);
SerialUSB.print(" hPa");
//SerialUSB.print(" Accel: ");
//SerialUSB.print(myIMU.readFloatAccelX());
//SerialUSB.print(",");
//SerialUSB.print(myIMU.readFloatAccelY()- 0.98f);
//SerialUSB.print(",");
//SerialUSB.print(myIMU.readFloatAccelZ());
//SerialUSB.print(" ");
SerialUSB.println();
}
void updateTelemetry() {
tempAltitudeLong = 0; //meters or feet
tempAltitudeShort = 0; //km or miles
tempSpeed = 0; //km or miles
tempTemperature = 0; //Celcius or Fahrenheit
if(measurementSystem == 0){ //Metric
tempAltitudeLong = myGPS.getAltitude() / 1000.f; //meters
tempAltitudeShort = tempAltitudeLong / 1000.f; //kilometers
tempSpeed = myGPS.getGroundSpeed() * 0.0036f; //km/hour
tempTemperature = bmp.readTemperature(); //Celsius
} else { //Imperial
tempAltitudeLong = (myGPS.getAltitude() * 3.2808399) / 1000.f;//feet
tempAltitudeShort = tempAltitudeLong / 5280.f;//miles
tempSpeed = myGPS.getGroundSpeed() * 0.00223694f; //mile/hour
tempTemperature = (bmp.readTemperature() * 1.8f) + 32; //Fahrenheit
}
tempLatitude = myGPS.getLatitude() / 10000000.f;
tempLongitude = myGPS.getLongitude() / 10000000.f;
tempSats = myGPS.getSIV();
tempHeading = myGPS.getHeading() / 100000;
tempPressure = bmp.readPressure() / 100.0f;
//latitude,longtitude,altitude,speed,course,sattelite,battery,temp,pressure
telemetry.reset();// clear the buffer
telemetry.addGPS(1, tempLatitude, tempLongitude, tempAltitudeLong); // channel 3, coordinates and altitude (meters or feet)
telemetry.addTemperature(2, tempTemperature); // Celcius or Fahrenheit
telemetry.addAnalogInput(3, voltage); //Battery/Supercaps voltage
telemetry.addDigitalInput(4, tempSats); //GPS sattelites in view
telemetry.addAnalogInput(5, tempSpeed); //km/h or mile/h
telemetry.addDigitalInput(6, tempHeading); //course in degrees
telemetry.addBarometricPressure(7, tempPressure); //pressure
telemetry.addAccelerometer(8,myIMU.readFloatAccelX(),myIMU.readFloatAccelY(),myIMU.readFloatAccelZ());
telemetry.addAnalogInput(9, tempAltitudeShort); //kilometers or miles
}
float readBatt() {
float R1 = 560000.0; // 560K
float R2 = 100000.0; // 100K
float value = 0.0f;
do {
value =analogRead(BattPin);
value +=analogRead(BattPin);
value +=analogRead(BattPin);
value = value / 3.0f;
value = (value * 3.3) / 1024.0f;
value = value / (R2/(R1+R2));
} while (value > 16.0);
return value ;
}
void freeMem() {
#if defined(DEVMODE)
SerialUSB.print(F("Free RAM: ")); SerialUSB.print(freeMemory(), DEC); SerialUSB.println(F(" byte"));
#endif
}
void os_getJoinEui (u1_t* buf) { memcpy_P(buf, APPEUI, 8);}
void os_getDevEui (u1_t* buf) { memcpy_P(buf, DEVEUI, 8);}
void os_getNwkKey (u1_t* buf) { memcpy_P(buf, APPKEY, 16);}
void onLmicEvent (ev_t ev) {
SerialUSB.print(os_getTime());
SerialUSB.print(": ");
switch(ev) {
case EV_SCAN_TIMEOUT:
SerialUSB.println(F("EV_SCAN_TIMEOUT"));
break;
case EV_BEACON_FOUND:
SerialUSB.println(F("EV_BEACON_FOUND"));
break;
case EV_BEACON_MISSED:
SerialUSB.println(F("EV_BEACON_MISSED"));
break;
case EV_BEACON_TRACKED:
SerialUSB.println(F("EV_BEACON_TRACKED"));
break;
case EV_JOINING:
SerialUSB.println(F("EV_JOINING"));
break;
case EV_JOINED:
SerialUSB.println(F("EV_JOINED"));
// Disable link check validation (automatically enabled
// during join, but not supported by TTN at this time).
LMIC_setLinkCheckMode(0);
break;
case EV_RFU1:
SerialUSB.println(F("EV_RFU1"));
break;
case EV_JOIN_FAILED:
SerialUSB.println(F("EV_JOIN_FAILED"));
break;
case EV_REJOIN_FAILED:
SerialUSB.println(F("EV_REJOIN_FAILED"));
break;
break;
case EV_TXCOMPLETE:
SerialUSB.println(F("EV_TXCOMPLETE (includes waiting for RX windows)"));
if (LMIC.txrxFlags & TXRX_ACK)
SerialUSB.println(F("Received ack"));
if (LMIC.dataLen) {
SerialUSB.print(F("Received "));
SerialUSB.print(LMIC.dataLen);
SerialUSB.println(F(" bytes of payload"));
}
break;
case EV_LOST_TSYNC:
SerialUSB.println(F("EV_LOST_TSYNC"));
break;
case EV_RESET:
SerialUSB.println(F("EV_RESET"));
break;
case EV_RXCOMPLETE:
// data received in ping slot
SerialUSB.println(F("EV_RXCOMPLETE"));
break;
case EV_LINK_DEAD:
SerialUSB.println(F("EV_LINK_DEAD"));
break;
case EV_LINK_ALIVE:
SerialUSB.println(F("EV_LINK_ALIVE"));
break;
case EV_SCAN_FOUND:
SerialUSB.println(F("EV_SCAN_FOUND"));
break;
case EV_TXSTART:
SerialUSB.println(F("EV_TXSTART"));
break;
case EV_TXDONE:
SerialUSB.println(F("EV_TXDONE"));
break;
case EV_DATARATE:
SerialUSB.println(F("EV_DATARATE"));
break;
case EV_START_SCAN:
SerialUSB.println(F("EV_START_SCAN"));
break;
case EV_ADR_BACKOFF:
SerialUSB.println(F("EV_ADR_BACKOFF"));
break;
default:
SerialUSB.print(F("Unknown event: "));
SerialUSB.println(ev);
break;
}
}
void printLoRaWANSettings(){
SerialUSB.println(F("------------------------------------------------------------------------------------"));
SerialUSB.print(F("Region: "));
SerialUSB.print(regionName);
SerialUSB.print(F(", Freq: "));
SerialUSB.print(LMIC.freq/1000000.f);
SerialUSB.print(F("MHz, SF"));
SerialUSB.print(getSf(LMIC.rps) - SF7 + 7);
SerialUSB.print(F("BW"));
SerialUSB.print(125 << (getBw(LMIC.rps) - BW125));
SerialUSB.print(F(", Power: "));
SerialUSB.print(LMIC.txpow + LMIC.brdTxPowOff);
SerialUSB.print(F("dBm, Payload Size: "));
SerialUSB.print(telemetry.getSize());
SerialUSB.println(F(" bytes"));
SerialUSB.println(F("------------------------------------------------------------------------------------"));
}
void setupUBloxDynamicModel() {
// If we are going to change the dynamic platform model, let's do it here.
// Possible values are:
// PORTABLE, STATIONARY, PEDESTRIAN, AUTOMOTIVE, SEA, AIRBORNE1g, AIRBORNE2g, AIRBORNE4g, WRIST, BIKE
//DYN_MODEL_AIRBORNE4g model increases ublox max. altitude limit from 12.000 meters to 50.000 meters.
if (myGPS.setDynamicModel(DYN_MODEL_AIRBORNE4g) == false) // Set the dynamic model to DYN_MODEL_AIRBORNE4g
{
SerialUSB.println(F("***!!! Warning: setDynamicModel failed !!!***"));
}
else
{
SerialUSB.print(F("Ublox Dynamic platform model changed successfully! : "));
SerialUSB.println(myGPS.getDynamicModel());
}
}

711
lorawan-otaa-pico-balloon-tracker/lorawan-otaa-pico-balloon-tracker.ino 100644
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#include <basicmac.h>
#include <hal/hal.h>
#include <Adafruit_BMP085.h>
#include <LightTrackerGeofence.h>
#include "SparkFun_Ublox_Arduino_Library.h"
#include <MemoryFree.h>;
#include <CayenneLPP.h>
#include "SparkFunLIS3DH.h"
// SX1262 has the following connections:
#define nssPin 8
#define rstPin 9
#define dio1Pin 3
#define busyPin 2
#define BattPin A5
#define GpsPwr 12
#define GpsON digitalWrite(GpsPwr, LOW);
#define GpsOFF digitalWrite(GpsPwr, HIGH);
SFE_UBLOX_GPS myGPS;
Adafruit_BMP085 bmp; //temp and pressure sensor
LIS3DH myIMU; //accelerometer
//#define DEVMODE // Development mode. Uncomment to enable for debugging.
//***************************** UPDATE HERE WITH YOUR DEVICE KEYS **************************************/
//You should copy device keys from Helium or TTN Console and update following keys. Please check out: https://github.com/lightaprs/LightTracker-1.0/wiki/Adding-Device-on-Helium-Console
// This EUI must be in little-endian format, so least-significant-byte (lsb)
// first. When copying an EUI from Helium Console or ttnctl output, this means to reverse the bytes.
static const u1_t PROGMEM DEVEUI[8]={0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; //helium or ttn
// This EUI must be in little-endian format, so least-significant-byte (lsb)
// first. When copying an EUI from Helium Console or ttnctl output, this means to reverse the bytes.
static const u1_t PROGMEM APPEUI[8]={0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; //helium or ttn
// This key should be in big endian format (or, since it is not really a
// number but a block of memory, endianness does not really apply). In practice, a key taken from Helium Console or ttnctl can be copied as-is.
static const u1_t PROGMEM APPKEY[16] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; //helium or ttn
//*****************************************************************************************************/
//************************** LoRaWAN Settings ********************
const unsigned TX_INTERVAL = 60000; // Schedule TX every this many miliseconds (might become longer due to duty cycle limitations).
uint8_t measurementSystem = 0; //0 for metric (meters, km, Celcius, etc.), 1 for imperial (feet, mile, Fahrenheit,etc.)
//try to keep telemetry size smaller than 51 bytes if possible. Default telemetry size is 45 bytes.
CayenneLPP telemetry(51);
// The LoRaWAN region to use, automatically selected based on your location. So GPS fix is necesarry
u1_t os_getRegion (void) { return Lorawan_Geofence_region_code; } //do not change this
// GEOFENCE
uint8_t Lorawan_Geofence_no_tx = 0; //do not change this
uint8_t Lorawan_Geofence_region_code = _REGCODE_UNDEF; //do not change this
uint8_t Lorawan_Geofence_special_region_code = _REGCODE_UNDEF; //do not change this
uint8_t lastLoRaWANRegion = _REGCODE_UNDEF; //do not change this
boolean OTAAJoinStatus = false; //do not change this.
int channelNoFor2ndSubBand = 8; //do not change this. Used for US915 and AU915 / TTN and Helium
uint32_t last_packet = 0; //do not change this. Timestamp of last packet sent.
//pinmap for SX1262 LoRa module
#if !defined(USE_STANDARD_PINMAP)
const lmic_pinmap lmic_pins = {
.nss = nssPin,
.tx = LMIC_UNUSED_PIN,
.rx = LMIC_UNUSED_PIN,
.rst = rstPin,
.dio = {/* DIO0 */ LMIC_UNUSED_PIN, /* DIO1 */ dio1Pin, /* DIO2 */ LMIC_UNUSED_PIN},
.busy = busyPin,
.tcxo = LMIC_CONTROLLED_BY_DIO3,
};
#endif // !defined(USE_STANDARD_PINMAP)
//************************** uBlox GPS Settings ********************
long lastTime = 0; //Simple local timer. Limits amount if I2C traffic to Ublox module.
boolean gpsFix=false; //do not change this.
boolean ublox_high_alt_mode_enabled = false; //do not change this.
boolean gpsBMPSetup=false; //do not change this.
//********************************* Power Settings ******************************
int battWait=60; //seconds sleep if super capacitors/batteries are below battMin (important if power source is solar panel)
float battMin=3.5; // min Volts to TX. (Works with 3.3V too but 3.5V is safer)
float gpsMinVolt=4.5; //min Volts for GPS to wake up. (important if power source is solar panel) //do not change this
//********************************* Misc Settings ******************************
int txCount = 1;
float voltage = 0;
void setup() {
pinMode(A1,INPUT_PULLUP);
if(digitalRead(A1)==LOW) while(1);
delay(5000); //do not change this
pinMode(GpsPwr, OUTPUT);
GpsOFF;
SerialUSB.begin(115200);
// Wait up to 5 seconds for serial to be opened, to allow catching
// startup messages on native USB boards (that do not reset when
// serial is opened).
unsigned long start = millis();
while (millis() - start < 5000 && !SerialUSB);
SerialUSB.println();
SerialUSB.println(F("Starting"));
SerialUSB.println();
freeMem();
}
void loop() {
voltage = readBatt();
if (((voltage > battMin) && gpsFix) || ((voltage > gpsMinVolt) && !gpsFix)) {
if(!gpsBMPSetup){
SerialUSB.println(F("GPS setup"));
setupGPS_BMP();
SerialUSB.println(F("Searching for GPS fix..."));
setupAccel();
gpsBMPSetup = true;
freeMem();
}
if(gpsFix) {
// Let LMIC handle LoRaWAN background tasks
os_runstep();
}
//SerialUSB.println(millis() - lastLoRaPacket);
// If TX_INTERVAL passed, *and* our previous packet is not still
// pending (which can happen due to duty cycle limitations), send
// the next packet.
if ((millis() - last_packet > TX_INTERVAL && !(LMIC.opmode & (OP_JOINING|OP_TXRXPEND))) || !gpsFix){
GpsON;
delay(500);
if(!ublox_high_alt_mode_enabled){
setupUBloxDynamicModel();
}
// Calling myGPS.getPVT() returns true if there actually is a fresh navigation solution available.
if (myGPS.getPVT() && (myGPS.getFixType() !=0) && (myGPS.getSIV() > 0)) {
gpsFix=true;
checkRegionByLocation();
if(lastLoRaWANRegion != Lorawan_Geofence_region_code) {
SerialUSB.println(F("Region has changed, force LoRaWAN OTAA Login"));
OTAAJoinStatus = false;
lastLoRaWANRegion = Lorawan_Geofence_region_code;
}
if(!OTAAJoinStatus && (Lorawan_Geofence_no_tx == 0)){
SerialUSB.println(F("LoRaWAN OTAA Login initiated..."));
startJoining();
SerialUSB.println(F("LoRaWAN OTAA Login success..."));
OTAAJoinStatus = true;
freeMem();
}
updateTelemetry();
#if defined(DEVMODE)
SerialUSB.print(F("Telemetry Size: "));
SerialUSB.print(telemetry.getSize());
SerialUSB.println(F(" bytes"));
#endif
//need to save power
if (readBatt() < 4.5) {
GpsOFF;
ublox_high_alt_mode_enabled = false; //gps sleep mode resets high altitude mode.
delay(500);
}
if (Lorawan_Geofence_no_tx == 0) {
sendLoRaWANPacket();
SerialUSB.println(F("LoRaWAN packet sent.."));
}
freeMem();
}
#if defined(DEVMODE)
printGPSandSensorData();
#endif
}
//this code block protecting serial connected (3V + 3V) super caps from overcharging by powering on GPS module.
//GPS module uses too much power while on, so if voltage is too high for supercaps, GPS ON.
if (readBatt() > 6.5) {
GpsON;
delay(500);
}
} else {
GpsOFF;
ublox_high_alt_mode_enabled = false; //gps sleep mode resets high altitude mode.
delay(battWait * 1000);
}
delay(1000);
}
//to join LoRaWAN network, every region requires different parameters. Please refer to : https://lora-alliance.org/resource_hub/rp2-1-0-3-lorawan-regional-parameters/
void startJoining() {
// LMIC init
os_init(nullptr);
LMIC_reset();
// Start join
LMIC_startJoining();
//DO NOT CHANGE following code blocks unless you know what you are doing :)
//Europe
if(Lorawan_Geofence_region_code == _REGCODE_EU868) {
SerialUSB.println(F("Region EU868"));
//A little hack for Russian region since BasicMAC does not officially support RU864-870. Tested on TTN and worked..
if(Lorawan_Geofence_special_region_code == _REGCODE_RU864) {
SerialUSB.println(F("Special Region RU864"));
LMIC_setupChannel(0, 868900000, DR_RANGE_MAP(0, 2));
LMIC_setupChannel(0, 869100000, DR_RANGE_MAP(0, 2));
}
//DR2 (SF10 BW125kHz)
//SF10 is better/optimum spreading factor for high altitude balloons
LMIC_setDrTxpow(2,KEEP_TXPOWADJ);
//Japan, Malaysia, Singapore, Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam
} else if (Lorawan_Geofence_region_code == _REGCODE_AS923) {
SerialUSB.println(F("Region AS923"));
//A little hack for Korean region since BasicMAC does not officially support KR920-923. Tested on TTN and worked..
if(Lorawan_Geofence_special_region_code == _REGCODE_KR920) {
SerialUSB.println(F("Special Region KR920"));
LMIC_setupChannel(0, 922100000, DR_RANGE_MAP(0, 2));
LMIC_setupChannel(0, 922300000, DR_RANGE_MAP(0, 2));
LMIC_setupChannel(0, 922500000, DR_RANGE_MAP(0, 2));
}
//DR2 (SF10 BW125kHz)
//For AS923, DR2 join only since max payload limit is 11 bytes.
LMIC_setDrTxpow(2,KEEP_TXPOWADJ);
//North and South America (Except Brazil)
} else if (Lorawan_Geofence_region_code == _REGCODE_US915) {
SerialUSB.println(F("Region US915"));
//DR0 (SF10 BW125kHz)
//For US915, DR0 join only since max payload limit is 11 bytes.
LMIC_setDrTxpow(0,KEEP_TXPOWADJ);
//TTN and Helium only supports second sub band (channels 8 to 15)
//so we should force BasicMAC to initiate a join with second sub band channels.
LMIC_selectChannel(8);
//Australia and New Zeleand
} else if (Lorawan_Geofence_region_code == _REGCODE_AU915) {
SerialUSB.println(F("Region AU915"));
//DR2 (SF10 BW125kHz)
//For AU915, DR2 join only since max payload limit is 11 bytes.
LMIC_setDrTxpow(2,KEEP_TXPOWADJ);
//TTN and Helium only supports second sub band (channels 8 to 15)
//so we should force BasicMAC to initiate a join with second sub band channels.
LMIC_selectChannel(8);
} else {
LMIC_setDrTxpow(2,KEEP_TXPOWADJ);
}
LMIC_setAdrMode(false);
LMIC_setLinkCheckMode(0);
// Make sure the first packet is scheduled ASAP after join completes
last_packet = millis() - TX_INTERVAL;
// Optionally wait for join to complete (uncomment this is you want
// to run the loop while joining).
while ((LMIC.opmode & (OP_JOINING))) {
os_runstep();
}
}
// Telemetry size is very important, try to keep it lower than 51 bytes. Always lower is better.
void sendLoRaWANPacket(){
//Europa
if(Lorawan_Geofence_region_code == _REGCODE_EU868) {
if(telemetry.getSize() < 52) {
//DR2 (SF10 BW125kHz) max payload size is 51 bytes.
LMIC_setDrTxpow(2,KEEP_TXPOWADJ);
} else if (telemetry.getSize() < 116){
//DR3 (SF9 BW125kHz) max payload size is 115 bytes.
LMIC_setDrTxpow(3,KEEP_TXPOWADJ);
} else {
//DR4 (SF8 BW125kHz) max payload size is 222 bytes.
LMIC_setDrTxpow(4,KEEP_TXPOWADJ);
}
//Japan, Malaysia, Singapore, Brunei, Cambodia, Hong Kong, Indonesia, Laos, Taiwan, Thailand, Vietnam
} else if (Lorawan_Geofence_region_code == _REGCODE_AS923) {
if(telemetry.getSize() < 54) {
//DR3 (SF9 BW125kHz) max payload size is 53 bytes.
LMIC_setDrTxpow(3,KEEP_TXPOWADJ);
} else if (telemetry.getSize() < 126){
//DR4 (SF8 BW125kHz) max payload size is 125 bytes.
LMIC_setDrTxpow(4,KEEP_TXPOWADJ);
} else {
//DR5 (SF7 BW125kHz) max payload size is 222 bytes.
LMIC_setDrTxpow(5,KEEP_TXPOWADJ);
}
//North and South America (Except Brazil) or Australia and New Zeleand
} else if (Lorawan_Geofence_region_code == _REGCODE_US915 || Lorawan_Geofence_region_code == _REGCODE_AU915) {
//North and South America (Except Brazil)
if (Lorawan_Geofence_region_code == _REGCODE_US915){
if(telemetry.getSize() < 54) {
//DR1 (SF9 BW125kHz) max payload size is 53 bytes.
LMIC_setDrTxpow(1,KEEP_TXPOWADJ);
} else if (telemetry.getSize() < 126){
//DR2 (SF8 BW125kHz) max payload size is 125 bytes.
LMIC_setDrTxpow(2,KEEP_TXPOWADJ);
} else {
//DR3 (SF7 BW125kHz) max payload size is 222 bytes.
LMIC_setDrTxpow(3,KEEP_TXPOWADJ);
}
//Australia and New Zeleand
} else if (Lorawan_Geofence_region_code == _REGCODE_AU915){
if(telemetry.getSize() < 54) {
//DR3 (SF9 BW125kHz) max payload size is 53 bytes.
LMIC_setDrTxpow(3,KEEP_TXPOWADJ);
} else if (telemetry.getSize() < 126){
//DR4 (SF8 BW125kHz) max payload size is 125 bytes.
LMIC_setDrTxpow(4,KEEP_TXPOWADJ);
} else {
//DR5 (SF7 BW125kHz) max payload size is 222 bytes.
LMIC_setDrTxpow(5,KEEP_TXPOWADJ);
}
}
//TTN and Helium only supports second sub band (channels 8 to 15)
//so we should force BasicMAC use second sub band channels.
LMIC_selectChannel(channelNoFor2ndSubBand);
++channelNoFor2ndSubBand;
if(channelNoFor2ndSubBand > 15) {
channelNoFor2ndSubBand = 8;
}
//India
} else if (Lorawan_Geofence_region_code == _REGCODE_IN865) {
if(telemetry.getSize() < 52) {
//DR2 (SF10 BW125kHz) max payload size is 51 bytes.
LMIC_setDrTxpow(2,KEEP_TXPOWADJ);
} else if (telemetry.getSize() < 116){
//DR3 (SF9 BW125kHz) max payload size is 115 bytes.
LMIC_setDrTxpow(3,KEEP_TXPOWADJ);
} else {
//DR4 (SF8 BW125kHz) max payload size is 222 bytes.
LMIC_setDrTxpow(4,KEEP_TXPOWADJ);
}
}
LMIC_setAdrMode(false);
LMIC_setLinkCheckMode(0);
LMIC_setTxData2(1, telemetry.getBuffer(), telemetry.getSize(), 0);
last_packet = millis();
txCount++;
SerialUSB.print(F("Packet queued..."));
}
void setupAccel() {
myIMU.settings.adcEnabled = 1;
myIMU.settings.accelSampleRate = 400; //Hz. Can be: 0,1,10,25,50,100,200,400,1600,5000 Hz
myIMU.settings.accelRange = 16; //Max G force readable. Can be: 2, 4, 8, 16
myIMU.settings.xAccelEnabled = 1;
myIMU.settings.yAccelEnabled = 1;
myIMU.settings.zAccelEnabled = 1;
//Call .begin() to configure the IMU
myIMU.begin();
delay(100);
}
void setupGPS_BMP() {
GpsON;
delay(100);
Wire.begin();
bmp.begin();
Wire.setClock(400000);
if (myGPS.begin() == false) //Connect to the Ublox module using Wire port
{
SerialUSB.println(F("Ublox GPS not detected at default I2C address. Please check wiring. Freezing."));
while (1)
;
}
// do not overload the buffer system from the GPS, disable UART output
myGPS.setUART1Output(0); //Disable the UART1 port output
myGPS.setUART2Output(0); //Disable Set the UART2 port output
myGPS.setI2COutput(COM_TYPE_UBX); //Set the I2C port to output UBX only (turn off NMEA noise)
//myGPS.enableDebugging(); //Enable debug messages over Serial (default)
myGPS.setNavigationFrequency(2);//Set output to 2 times a second. Max is 10
byte rate = myGPS.getNavigationFrequency(); //Get the update rate of this module
SerialUSB.print("Current update rate for GPS: ");
SerialUSB.println(rate);
myGPS.saveConfiguration(); //Save the current settings to flash and BBR
}
void printGPSandSensorData()
{
lastTime = millis(); //Update the timer
byte fixType = myGPS.getFixType();
SerialUSB.print(F("FixType: "));
SerialUSB.print(fixType);
int SIV = myGPS.getSIV();
SerialUSB.print(F(" Sats: "));
SerialUSB.print(SIV);
float flat = myGPS.getLatitude() / 10000000.f;
SerialUSB.print(F(" Lat: "));
SerialUSB.print(flat);
float flong = myGPS.getLongitude() / 10000000.f;
SerialUSB.print(F(" Long: "));
SerialUSB.print(flong);
float altitude = myGPS.getAltitude() / 1000;
SerialUSB.print(F(" Alt: "));
SerialUSB.print(altitude);
SerialUSB.print(F(" (m)"));
//float speed = myGPS.getGroundSpeed() * 0.0036f;
//SerialUSB.print(F(" Speed: "));
//SerialUSB.print(speed);
//SerialUSB.print(F(" (km/h)"));
//long heading = myGPS.getHeading() / 100000;
//SerialUSB.print(F(" Heading: "));
//SerialUSB.print(heading);
//SerialUSB.print(F(" (degrees)"));
SerialUSB.print(" Time: ");
SerialUSB.print(myGPS.getYear());
SerialUSB.print("-");
SerialUSB.print(myGPS.getMonth());
SerialUSB.print("-");
SerialUSB.print(myGPS.getDay());
SerialUSB.print(" ");
SerialUSB.print(myGPS.getHour());
SerialUSB.print(":");
SerialUSB.print(myGPS.getMinute());
SerialUSB.print(":");
SerialUSB.print(myGPS.getSecond());
SerialUSB.print(" Temp: ");
SerialUSB.print(bmp.readTemperature());
SerialUSB.print(" C");
SerialUSB.print(" Press: ");
SerialUSB.print(bmp.readPressure() / 100.0);
SerialUSB.print(" hPa");
//SerialUSB.print(" Accel: ");
//SerialUSB.print(myIMU.readFloatAccelX());
//SerialUSB.print(",");
//SerialUSB.print(myIMU.readFloatAccelY()- 0.98f);
//SerialUSB.print(",");
//SerialUSB.print(myIMU.readFloatAccelZ());
//SerialUSB.print(" ");
SerialUSB.println();
}
void updateTelemetry() {
float tempAltitudeLong = 0; //meters or feet
float tempAltitudeShort = 0; //km or miles
float tempSpeed = 0; //km or miles
float tempTemperature = 0; //Celcius or Fahrenheit
if(measurementSystem == 0){ //Metric
tempAltitudeLong = myGPS.getAltitude() / 1000.f; //meters
tempAltitudeShort = tempAltitudeLong / 1000.f; //kilometers
tempSpeed = myGPS.getGroundSpeed() * 0.0036f; //km/hour
tempTemperature = bmp.readTemperature(); //Celsius
} else { //Imperial
tempAltitudeLong = (myGPS.getAltitude() * 3.2808399) / 1000.f;//feet
tempAltitudeShort = tempAltitudeLong / 5280.f;//miles
tempSpeed = myGPS.getGroundSpeed() * 0.00223694f; //mile/hour
tempTemperature = (bmp.readTemperature() * 1.8f) + 32; //Fahrenheit
}
//latitude,longtitude,altitude,speed,course,sattelite,battery,temp,pressure
telemetry.reset();// clear the buffer
telemetry.addGPS(1, myGPS.getLatitude() / 10000000.f, myGPS.getLongitude() / 10000000.f, tempAltitudeLong); // channel 3, coordinates and altitude (meters or feet)
telemetry.addTemperature(2, tempTemperature); // Celcius or Fahrenheit
telemetry.addAnalogInput(3, voltage); //Battery/Supercaps voltage
telemetry.addDigitalInput(4, myGPS.getSIV()); //GPS sattelites in view
telemetry.addAnalogInput(5, tempSpeed); //km/h or mile/h
telemetry.addDigitalInput(6, myGPS.getHeading() / 100000); //course in degrees
telemetry.addBarometricPressure(7, bmp.readPressure() / 100.f); //pressure
telemetry.addAccelerometer(8,myIMU.readFloatAccelX(),myIMU.readFloatAccelY()- 0.98f,myIMU.readFloatAccelZ());
telemetry.addAnalogInput(9, tempAltitudeShort); //kilometers or miles
}
void checkRegionByLocation() {
float tempLat = myGPS.getLatitude() / 10000000.f;
float tempLong = myGPS.getLongitude() / 10000000.f;
Lorawan_Geofence_position(tempLat,tempLong);
}
float readBatt() {
float R1 = 560000.0; // 560K
float R2 = 100000.0; // 100K
float value = 0.0f;
do {
value =analogRead(BattPin);
value +=analogRead(BattPin);
value +=analogRead(BattPin);
value = value / 3.0f;
value = (value * 3.3) / 1024.0f;
value = value / (R2/(R1+R2));
} while (value > 16.0);
return value ;
}
void freeMem() {
#if defined(DEVMODE)
SerialUSB.print(F("Free RAM: ")); SerialUSB.print(freeMemory(), DEC); SerialUSB.println(F(" byte"));
#endif
}
void os_getJoinEui (u1_t* buf) { memcpy_P(buf, APPEUI, 8);}
void os_getDevEui (u1_t* buf) { memcpy_P(buf, DEVEUI, 8);}
void os_getNwkKey (u1_t* buf) { memcpy_P(buf, APPKEY, 16);}
void onLmicEvent (ev_t ev) {
SerialUSB.print(os_getTime());
SerialUSB.print(": ");
switch(ev) {
case EV_SCAN_TIMEOUT:
SerialUSB.println(F("EV_SCAN_TIMEOUT"));
break;
case EV_BEACON_FOUND:
SerialUSB.println(F("EV_BEACON_FOUND"));
break;
case EV_BEACON_MISSED:
SerialUSB.println(F("EV_BEACON_MISSED"));
break;
case EV_BEACON_TRACKED:
SerialUSB.println(F("EV_BEACON_TRACKED"));
break;
case EV_JOINING:
SerialUSB.println(F("EV_JOINING"));
break;
case EV_JOINED:
SerialUSB.println(F("EV_JOINED"));
// Disable link check validation (automatically enabled
// during join, but not supported by TTN at this time).
LMIC_setLinkCheckMode(0);
break;
case EV_RFU1:
SerialUSB.println(F("EV_RFU1"));
break;
case EV_JOIN_FAILED:
SerialUSB.println(F("EV_JOIN_FAILED"));
break;
case EV_REJOIN_FAILED:
SerialUSB.println(F("EV_REJOIN_FAILED"));
break;
break;
case EV_TXCOMPLETE:
SerialUSB.println(F("EV_TXCOMPLETE (includes waiting for RX windows)"));
if (LMIC.txrxFlags & TXRX_ACK)
SerialUSB.println(F("Received ack"));
if (LMIC.dataLen) {
SerialUSB.print(F("Received "));
SerialUSB.print(LMIC.dataLen);
SerialUSB.println(F(" bytes of payload"));
}
break;
case EV_LOST_TSYNC:
SerialUSB.println(F("EV_LOST_TSYNC"));
break;
case EV_RESET:
SerialUSB.println(F("EV_RESET"));
break;
case EV_RXCOMPLETE:
// data received in ping slot
SerialUSB.println(F("EV_RXCOMPLETE"));
break;
case EV_LINK_DEAD:
SerialUSB.println(F("EV_LINK_DEAD"));
break;
case EV_LINK_ALIVE:
SerialUSB.println(F("EV_LINK_ALIVE"));
break;
case EV_SCAN_FOUND:
SerialUSB.println(F("EV_SCAN_FOUND"));
break;
case EV_TXSTART:
SerialUSB.println(F("EV_TXSTART"));
break;
case EV_TXDONE:
SerialUSB.println(F("EV_TXDONE"));
break;
case EV_DATARATE:
SerialUSB.println(F("EV_DATARATE"));
break;
case EV_START_SCAN:
SerialUSB.println(F("EV_START_SCAN"));
break;
case EV_ADR_BACKOFF:
SerialUSB.println(F("EV_ADR_BACKOFF"));
break;
default:
SerialUSB.print(F("Unknown event: "));
SerialUSB.println(ev);
break;
}
}
void setupUBloxDynamicModel() {
// If we are going to change the dynamic platform model, let's do it here.
// Possible values are:
// PORTABLE, STATIONARY, PEDESTRIAN, AUTOMOTIVE, SEA, AIRBORNE1g, AIRBORNE2g, AIRBORNE4g, WRIST, BIKE
//DYN_MODEL_AIRBORNE4g model increases ublox max. altitude limit from 12.000 meters to 50.000 meters.
if (myGPS.setDynamicModel(DYN_MODEL_AIRBORNE4g) == false) // Set the dynamic model to DYN_MODEL_AIRBORNE4g
{
SerialUSB.println(F("***!!! Warning: setDynamicModel failed !!!***"));
}
else
{
#if defined(DEVMODE)
SerialUSB.print(F("Dynamic platform model changed successfully! : "));
SerialUSB.println(myGPS.getDynamicModel());
#endif
}
}