Hello,
I m getting a problem when sending and receiving data from an HTTP server using arduino nano and SIM808.
When sending and receiving data together only receiving works. And when you skip receiving..then it can send data.
Below is the code:
void loop() {
Serial.println("HTTP get method :");
SIM808.println("AT"); /* Check Communication */
delay(300);
GetGPSData("AT+CGNSINF",1000,DEBUG);
if (state !=0) {
Serial.println("State :"+state);
Serial.println("Time :"+timegps);
Serial.println("Latitude :"+latitude);
Serial.println("Longitude :"+longitude);
}
GetGSMTime(); // Call GetGSMTime Function
SendHTTPData(); // Send GPS/Fuel/Fingerprint/Device Status Data to Server
ReceiveHTTPData(); // Receive Engine Status from Server
if (engineflag == true) {
digitalWrite(4, data);
engineflag = false;
}
}
I tried to flush the data also on SIM808.flush(); to clear data before going to SendHTTPData(); and then again clear data at SIM808.flush(); after data sending is done.