Getting "Open the GPS power failure" on module SIM808

[deluxen123]

I tried to get the gps coordinates with this program:

#include <DFRobot_sim808.h>
#include <SoftwareSerial.h>

#define PIN_TX    8
#define PIN_RX    7
SoftwareSerial mySerial(PIN_RX,PIN_TX);
DFRobot_SIM808 sim808(&mySerial);//Connect RX,TX,PWR,

//DFRobot_SIM808 sim808(&Serial);

void setup() {
  mySerial.begin(9600);
  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);
    Serial.print("longitude :");
    Serial.println(sim808.GPSdata.lon);
    Serial.print("speed_kph :");
    Serial.println(sim808.GPSdata.speed_kph);
    Serial.print("heading :");
    Serial.println(sim808.GPSdata.heading);
    Serial.println();

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

}

But when I run it, I'm getting the "Open the GPS power failure" message.

I think my gps is working because If I try with AT commands Im getting a response:

When I turn on the gps there is an led that starts blinking every second, I don't know if that is a good or bad signal, maybe it should be blinking every 3 seconds like the other led indicating the SIM connectivity?

Any idea or suggestion is welcome!

[deluxen123]

Okey now I am not very sure if my gps antena is working.

I tried to use the gps commands without having connected the antena and I was getting the same response

I should be getting a lot of 0 in the location info, right?

Or is there a way to actually test if the gps antena is working? Because the module is responding the gps commands without it