lora issue

[RustInPeaces]

Hi. First of all im pretty new at this so please bear with me.

So Im trying to get gps coordinates from a neo 6m gps to Arduino Uno to LoRa xl1278-smt, and sent to another LoRa xl1278-smt connected to a Arduino Nano.

I confirmed getting gps signals, and transimmer is sending packet, receiver is receiving packets, but all i get is Long 0. 0 deg and Lat 0.0 deg readings. Why? I dont get it, if it sends it should send the received gps signals right? Im also encoding the nmea to latitude/longitude before sending. Havent tried without yet.

Cheers :)

Transmitter code: //Code for Transmitter (Sender)

include

include

include <TinyGPS++.h>

include

static const int RXPin = 4, TXPin = 3; static const uint32_t GPSBaud = 9600;

//Create a TinyGPS++ object TinyGPSPlus gps;

SoftwareSerial ss(RXPin, TXPin);

void setup() {

//Start Arduino hardware serial port at 9600 baud Serial.begin(9600); //Start the software serial port at the GPS ss.begin(GPSBaud); while (!Serial); Serial.println("LoRa Sender"); if (!LoRa.begin(433E6)) { Serial.println("Starting LoRa failed!"); while (1); }

LoRa.setTxPower(20); }

void loop() {

//This sketch displays information every time a new //sentence is correctly encoded. while (ss.available() >0){ gps.encode(ss.read()); if(gps.location.isUpdated()){ Serial.print("Latitude= "); Serial.print(gps.location.lat(), 6); Serial.print(" Longitude= "); Serial.println(gps.location.lng(), 6); }

//If valid location begin transmitting values. //Setup made ready for 16*2 LCD screen LoRa.beginPacket(); LoRa.print("Latitude= "); LoRa.print(gps.location.lat(), 6); LoRa.print(" Longitude= "); LoRa.print(gps.location.lng(), 6); Serial.println("Sent via LoRa"); LoRa.endPacket(); delay(1000); } }

Receiver code:

include

include

void setup() { //Start serial for debugging Serial.begin(9600); while (!Serial);

Serial.println("LoRa Receiver");

//Set LoRa frequency and operation reply if (!LoRa.begin(433E6)) { Serial.println("Starting LoRa failed!"); while (1); } }

void loop() { //Try to parse packet int packetSize = LoRa.parsePacket(); //If packet received if(packetSize) {
Serial.print("Received packet '");

//Read packet while (LoRa.available()) { Serial.print((char)LoRa.read());

} }

}

[TD-er]

gps.location.isUpdated() only shows when a string containing coordinates was processed. It doesn't mean you have a fix. Acquiring a fix may take quite some time initially, especially when being indoor and the GPS has no idea where it could be in the world.

[RustInPeaces]

But the gps has a blue light when it has position, and that it has. Also i changed that to gps.location.isValid() , with same result.

[mikalhart]

Your "delay(1000);" makes it all but certain that NMEA characters are being lost. Rewrite this so that you send a packet only, say, when millis() - start > 1000.

Good rule of thumb: never use delay() in a sketch with TinyGPS.