Arduino Waveshare SIM808 shield

Projects Networking, Protocols, and Devices
1

I've been trying to work with Waveshare SIM 808 shield on arduino, quite similar to this one: https://www.waveshare.com/wiki/GSM/GPRS/GPS_Shield_(B)#How_to_use_with_Arduino_UNO_R3

I tried using multiple examples, such as this:

#include <DFRobot_sim808.h>


#include <SoftwareSerial.h>


DFRobot_SIM808 sim808(&Serial);

void setup() {
 Serial.begin(9600);

 //******** Initialize sim808 module *************
 while(!sim808.init()) { 
     delay(1000);
     Serial.print("Sim808 init error\r\n");
 }  

 //************* Turn on the GPS power************
 if( sim808.attachGPS())
     Serial.println("Open the GPS power success");
 else 
 Serial.println("Open the GPS power failure");

}

void loop() {
   //************** Get GPS data *******************
   if (sim808.getGPS()) {
   Serial.print(sim808.GPSdata.year);
Serial.print("/");
Serial.print(sim808.GPSdata.month);
Serial.print("/");
Serial.print(sim808.GPSdata.day);
Serial.print(" ");
Serial.print(sim808.GPSdata.hour);
Serial.print(":");
Serial.print(sim808.GPSdata.minute);
Serial.print(":");
Serial.print(sim808.GPSdata.second);
Serial.print(":");
Serial.println(sim808.GPSdata.centisecond);

Serial.print("latitude :");
Serial.println(sim808.GPSdata.lat,6);

sim808.latitudeConverToDMS();
Serial.print("latitude :");
Serial.print(sim808.latDMS.degrees);
Serial.print("\^");
Serial.print(sim808.latDMS.minutes);
Serial.print("\'");
Serial.print(sim808.latDMS.seconeds,6);
Serial.println("\"");
Serial.print("longitude :");
Serial.println(sim808.GPSdata.lon,6);
sim808.LongitudeConverToDMS();
Serial.print("longitude :");
Serial.print(sim808.longDMS.degrees);
Serial.print("\^");
Serial.print(sim808.longDMS.minutes);
Serial.print("\'");
Serial.print(sim808.longDMS.seconeds,6);
Serial.println("\"");

Serial.print("speed_kph :");
Serial.println(sim808.GPSdata.speed_kph);
Serial.print("heading :");
Serial.println(sim808.GPSdata.heading);

//************* Turn off the GPS power ************
sim808.detachGPS();
 }

}

or this

#include <SoftwareSerial.h>

SoftwareSerial mySerial(2, 3); // RX, TX
String comdata = "";
void setup()
{
 // Open serial communications and wait for port to open:
 Serial.begin(9600);

while (!Serial) {
   ; // wait for serial port to connect. Needed for native USB port only
 }

 // set the data rate for the SoftwareSerial port
 mySerial.begin(9600);
 delay(200);
}

void loop() // run over and over
{
 delay(2000);
  mySerial.println("AT");   
  delay(200);
  //Send message
  mySerial.println("AT+CGNSPWR=1");
  delay(200);
  //reset GPS in autonomy mode
  mySerial.println("AT+CGNSTST=1");
  delay(200);
  mySerial.listen();
  while(1)
 {  
   while(mySerial.available()>0)  
       Serial.write(mySerial.read());
   while(Serial.available())
   mySerial.write(Serial.read());  
 } 
}

In first case, I obviously don't declare RX, TX pins and use the Arduino's general purpose RX, TX pins (0, 1).
In second case I used wires to connect Arduino pins 2 and 3, to shield's D0 and D1 pins.

In both cases, neither RX or TX leds on shield's module light up, which means that it doesn't receive the sent data.

I made sure to set UART/ARDUINO switch on ARDUINO position and I did reset the module several times.

I am using Arduino Uno. What goes wrong here?

2

Did you try to unlock the setup code?

while (!Serial) {
   ; // wait for serial port to connect. Needed for native USB port only
 }