There are no GPS data after connecting to the server - arduino

Question

I'm trying to get GPS data and send it to the server via socket.
I'm using Arduino Uno and GPS/GSM module A7 Ai-Thinker.
And for Internet I use Ethernet shield connected to Wi-Fi router.
But I got trouble when I joined getting GPS data and sending it.
Separately that functions work fine. How I start A7, there is a loop where I type AT commands and send it to A7. About socket, I want to set connection at start function and keep it alive all the time.
But the problem is that when I initialized A7 and set socket connection, I go to the loop function and after first iteration there are no data at A7.
If I try to set connection with server first, and start A7 after it, A7 doesn't react to AT commands.
How can I keep connection with my server and don't lost connection with A7?
Code:
#include <TinyGPS++.h>
#include <SoftwareSerial.h>
#include <SPI.h>
#include <Ethernet.h>
//-------------------------------------------------------
static const int RXPin = 10, TXPin = 11;
static const uint32_t GPSBaud = 4800;
const String START_GPS = "START_GPS";
TinyGPSPlus gps;
SoftwareSerial gps_serial(RXPin, TXPin);
//-------------------------------------------------------
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
char server[] = "192.168.0.100";
int port = 8090;
IPAddress ip(192, 168, 0, 177);
EthernetClient client;
//-------------------------------------------------------
void initGpsConnection();
void startGps();
void initSocketConnection();
void sendData();
void setup()
{
Serial.begin(9600);
Serial.println();
initSocketConnection();
initGpsConnection();
sendData();
}
void loop()
{
while (gps_serial.available() > 0) {
if (gps.encode(gps_serial.read())) {
displayInfo();
//delay(1000);
}
}
if (millis() > 120000 && gps.charsProcessed() < 10)
{
Serial.println(F("No GPS detected: check wiring."));
//while(true);
}
if (!client.connected()) {
Serial.println();
Serial.println("Socket connection has been lost.");
client.stop();
//while (true);
}
}
void displayInfo()
{
Serial.print(F("Location: "));
if (gps.location.isValid())
{
Serial.print(gps.location.lat(), 6);
Serial.print(F(","));
Serial.print(gps.location.lng(), 6);
}
else
{
Serial.print(F("INVALID"));
}
Serial.print(F(" Date/Time: "));
if (gps.date.isValid()) {
Serial.print(gps.date.month() + "/" gps.date.day() + "/" + gps.date.year();
} else {
Serial.print(F("INVALID"));
}
Serial.print(F(" "));
if (gps.time.isValid()) {
Serial.print(gps.time.hour() + ":" + gps.time.minute() + ":" + gps.time.second());
} else {
Serial.print(F("INVALID"));
}
Serial.println();
}
void initGpsConnection() {
Serial.println("In init gps");
gps_serial.begin(GPSBaud);
Serial.println("after gps begin");
delay(1000);
startGps();
Serial.println("GPS connection has been set");
}
void startGps() {
Serial.println("Enter at commands, after that enter `start_gps`");
String response = "";
while (true) {
if (gps_serial.available()) {
Serial.write(gps_serial.read());
}
if (Serial.available()) {
char c = Serial.read();
response += c;
if (response.indexOf(START_GPS) > 0)
break;
gps_serial.write(c);
}
}
}
void initSocketConnection() {
if (Ethernet.begin(mac) == 0) {
Serial.println("Failed to configure Ethernet using DHCP");
Ethernet.begin(mac, ip);
}
delay(1000);
Serial.println("connecting...");
if (client.connect(server, port)) {
Serial.println("Connection with server has been set");
} else {
Serial.println("Connection with server has been failed");
}
}
void sendData(){
client.print("TEst ard");
}

Answer 1

The problem was at A7 connection. It was connected via 10, 11 pins at Ethernet shield. But 10-13 pins are reserved by A7. It's just needed connect A7 vie 8, 9 or others pins.