GPRS doesn't send informations when connected to anemometer - arduino

Question

I've connected arduino to 4 different modules :
RTC
GPRS shield ( SARA G350 )
Wind vane
Anemometer
Everytime I launch my system the GPRS doesn't send anything unless I disconnect my anemometer.
I've tried the anemometer code on standalone and it works, I think the GPRS doesn't get enough power to send data when the anemometer is connected but how I'm not sure.
#include <SoftwareSerial.h>
#include <Wire.h>
#include <ds3231.h>
struct ts t;
String Angle;
int serial_in;
double x = 0;
double y = 0;
double a = 0;
double b = 0;
const int sensorPin = A5;
const int numReadings = 10;
int readings[numReadings];
int readIndex = 0;
int totalWind= 0;
int averageWind = 0;
int inputPin = A5;
int sensorValue = 0;
float sensorVoltage = 0;
float sensorVoltage2 = 0;
float windSpeed = 0;
float voltageConversionConstant = .004882814;
int sensorDelay = 2000;
float voltageMin = .4;
float windSpeedMin = 0;
float voltageMax = 2.0;
float windSpeedMax = 32;
SoftwareSerial mySerial(2, 3); //Tx & Rx sont connectés aux broches Arduino #7 et #8
void setup()
{
delay(15000);
Wire.begin();
DS3231_init(DS3231_INTCN);
//Commence la communication Serie
//Commence la communication Serie Arduino-Shield GPRS
mySerial.begin(9600);
delay(1000);
mySerial.println("AT"); //Handshaking
updateSerial();
mySerial.println("AT+UPSDA=2,0"); //Reset connexion
updateSerial();
delay(2000);
mySerial.println("AT+UPSD=2,1,\"sl2sfr\""); //Establissement de connexion avec l'APN
updateSerial();
delay(2000);
mySerial.println("AT+UPSDA=2,3");
updateSerial();
delay(2000);
mySerial.println("AT+UPSND=2,0");
updateSerial();
delay(2000);
}
void loop()
{
mySerial.println("AT+UPSDA=2,0"); //Reset connexion
updateSerial();
delay(2000);
mySerial.println("AT+UPSD=2,1,\"sl2sfr\""); //Establissement de connexion avec l'APN
updateSerial();
delay(2000);
mySerial.println("AT+UPSDA=2,3");
updateSerial();
delay(2000);
mySerial.println("AT+UPSND=2,0");
updateSerial();
delay(2000);
String Equipement = "STAINS";
mySerial.println("AT+UHTTP=0");
updateSerial();
delay(2000);
mySerial.println("AT+UHTTP=2,1,\"www.projetwmr.site\""); // Parametrage URL d'acces
updateSerial();
delay(2000);
String command = "AT+UHTTPC=2,5,\"/add.php\",\"post.ffs\",\"vite="; // Commande d'envoi des donnes via POST sur PHP
anemometre(); // Recuperation des données ANALOGIQUES
// convertion valeurs en String - Chaîne de caractères
command += String(windSpeed);
// or convertion précise
// command += String(Windspeed, 2);
command += "&equipement=";
command += String(Equipement);
DS3231_get(&t);
String heure = String(t.hour);
heure += ":";
heure += String(t.min);
heure += ":";
heure += String(t.sec);
String Date = String(t.year);
Date += "-";
Date += String(t.mon);
Date += "-";
Date += String(t.mday);
command += "&time=";
command += String(heure);
command += "&date=";
command += String(Date);
command += "&dire=";
girouette();
command += String(Angle);
command += "\",0"; //Fin de la commande PHP POST
mySerial.println(command);
updateSerial();
delay(45000);
}
void updateSerial()
{
delay(500);
while (Serial.available())
{
mySerial.write(Serial.read());//Forward what Serial received to Software Serial Port
}
while(mySerial.available())
{
Serial.write(mySerial.read());//Forward what Software Serial received to Serial Port
}
}
void girouette()
{
int sensorValue = analogRead(A1);
if (sensorValue >= 89 && sensorValue<=95 )
{ Angle="0°"; }
if (sensorValue >=60 && sensorValue<=70 )
{ Angle="22.5°"; }
if (sensorValue >=180 && sensorValue<=190 )
{ Angle="45°"; }
if (sensorValue >= 124 && sensorValue<=130 )
{ Angle="67.5°"; }
if (sensorValue >= 285 && sensorValue<=292 )
{ Angle="90°"; }
if (sensorValue >=240 && sensorValue<=250 )
{ Angle="115.5°"; }
if (sensorValue >= 630 && sensorValue<=640 )
{ Angle="135°"; }
if (sensorValue >= 600 && sensorValue<=610 )
{ Angle="157.5°"; }
if (sensorValue >=940 && sensorValue<=952 )
{ Angle="180°"; }
if (sensorValue >=825 && sensorValue<= 840 )
{ Angle="202.5°"; }
if (sensorValue >= 880 && sensorValue<= 898 )
{ Angle="225°"; }
if (sensorValue >= 700 && sensorValue<= 712 )
{ Angle="247.5°"; }
if (sensorValue >= 785 && sensorValue<= 795 )
{ Angle="270°"; }
if (sensorValue >= 405 && sensorValue<= 415)
{ Angle="292.5°"; }
if (sensorValue >= 460 && sensorValue<= 470 )
{ Angle="315°"; }
if (sensorValue >= 78 && sensorValue<=87 )
{ Angle="337.5°"; }
if (sensorValue >= 1000 && sensorValue<=50 )
{ Angle="Error"; }
delay(100);
}
void anemometre()
{
sensorValue = analogRead(A5);
totalWind = totalWind - readings[readIndex];
readings[readIndex] = sensorValue;
totalWind = totalWind + readings[readIndex];
readIndex = readIndex + 1;
sensorVoltage2 = sensorValue * voltageConversionConstant;
if (readIndex >= numReadings) {
readIndex = 0;
averageWind = totalWind / numReadings;
sensorVoltage = averageWind * voltageConversionConstant;
if (sensorVoltage <= voltageMin) {
windSpeed = 0;
} else {
windSpeed = ((sensorVoltage - voltageMin) * windSpeedMax / (voltageMax - voltageMin))*1.55;
}
}
x = windSpeed;
if (x >= y) {
y = x;
} else {
y = y;
}
a = sensorVoltage;
if (a >= b) {
b = a;
} else {
b = b;
}
}

Answer 1

If you don't have a reason to use it, you should avoid SoftwareSerial, it is known to be quite inefficient and it's most likely leading to issues with the other libraries you're loading.
Always use hardware serial ports if you have them available. See here for alternatives.