How to send gps data without USB cable connected from seeeduino lorawan to Loriot server

Hi, I already comment out all Serial.USB remain Serial,begin(9600) and Serial.available. After I unplugged the transmission is stopped and the red LED light to light up. But If I comment the Serial lines also, the transmission of data cannot start. So, may I know is there any alternative to replace the Serial lines that work under the condition of the USB cable is unpugged?



The following are the code:



#include <TinyGPS++.h>

#include <LoRaWan.h>

#include “DHT.h”





TinyGPSPlus gps;

#define DHTPIN A0 // what pin we’re connected to



#define DHTTYPE DHT11 // DHT 11



DHT dht(DHTPIN, DHTTYPE);

char buffer[256];





void setup(void)

{

//SerialUSB.begin(115200);

Serial.begin(9600);



lora.init();



memset(buffer, 0, 256);

lora.getVersion(buffer, 256, 1);

//SerialUSB.print(buffer);



memset(buffer, 0, 256);

lora.getId(buffer, 256, 1);

//SerialUSB.print(buffer);

//SerialUSB.println(“That was the id”);

// void setId(char *DevAddr, char *DevEUI, char *AppEUI);

lora.setId(NULL, “4786C58B003C002A”, “526973696E674846”);

// setKey(char *NwkSKey, char *AppSKey, char *AppKey);

lora.setKey(NULL, NULL, “2B7E151628AED2A6ABF7158809CF4F3C”);



lora.setDeciveMode(LWOTAA);

lora.setDataRate(DR2, AS923);



lora.setChannel(0, 923.0);

lora.setChannel(1, 923.2);

lora.setChannel(2, 923.4);

lora.setChannel(3, 923.6);

lora.setChannel(4, 923.8);

lora.setChannel(5, 924.0);

lora.setChannel(6, 924.2);

lora.setChannel(7, 924.4);



lora.setReceiceWindowFirst(2, 923.2);

lora.setReceiceWindowSecond(923.2, DR2);

lora.setAdaptiveDataRate(false);



lora.setPower(10);



while(!lora.setOTAAJoin(JOIN, 20000));

//SerialUSB.println(“After OTAA join”);



// Start DHT sensor

dht.begin();

}



void loop(void)

{

while (Serial.available() > 0) {

gps.encode(Serial.read());

}

if (gps.altitude.isUpdated()) {

//SerialUSB.println(gps.altitude.meters());

//SerialUSB.print(“LAT=”); SerialUSB.println(gps.location.lat(), 6);

//SerialUSB.print(“LONG=”); SerialUSB.println(gps.location.lng(), 6);

//SerialUSB.print(“ALT=”); SerialUSB.println(gps.altitude.meters());

long latEncoded = (gps.location.lat() * 8388606) / 90;

long lonEncoded = (gps.location.lng() * 8388606) / 180;

//SerialUSB.print("Lat encoded: ");

//SerialUSB.println(latEncoded);

//SerialUSB.print("Lon encoded: ");

//SerialUSB.println(lonEncoded);

float h = dht.readHumidity();

float t = dht.readTemperature();

//SerialUSB.print("Humidity is: “);

//SerialUSB.print(h);

//SerialUSB.print(”, Temperature: ");

//SerialUSB.print(t);

bool result = false;

//SerialUSB.println(result);

byte data[10] = {0};

data[0] = h;

data[1] = t + 100;

data[2] = (byte) (latEncoded >> 16);

data[3] = (byte) (latEncoded >> 8);

data[4] = (byte) latEncoded;

data[5] = (byte) (lonEncoded >> 16);

data[6] = (byte) (lonEncoded >> 8);

data[7] = (byte) lonEncoded;



result = lora.transferPacket(data, 10);

//result = lora.transferPacket(data, 10, 10);

//SerialUSB.println(result);

if(true)

{

short length;

short rssi;



memset(buffer, 0, 256);

length = lora.receivePacket(buffer, 256, &rssi);



if(length)

{

//SerialUSB.print("Length is: ");

//SerialUSB.println(length);

//SerialUSB.print("RSSI is: ");

//SerialUSB.println(rssi);

//SerialUSB.print("Data is: “);

for(unsigned char i = 0; i < length; i ++)

{

//SerialUSB.print(“0x”);

//SerialUSB.print(buffer[i], HEX);

//SerialUSB.print(” ");

}

//SerialUSB.println();

}

delay(1000 * 60 * (0.5));

}

}



}



Thanks