Read Temperature from onewire sensor end send to Thingspeak

wifi_temp.ino

#include <OneWire.h>
#include <DallasTemperature.h>
#include <uartWIFI.h>

#define SSID "my_network"
#define PASS "my_password"
#define ONEWIRE_BUS 10

#define THINGSPEAK_IP "184.106.153.149"
#define THINGSPEAK_KEY "my_thingspeak_key"
#define MINUTES 10

String GET = "GET http://api.thingspeak.com/update?key=" + String(THINGSPEAK_KEY) + "&field1=";
WIFI wifi;
OneWire onewire(ONEWIRE_BUS);
DallasTemperature sensors(&onewire);

void setup(void)
{
  delay(1000);
  while (!wifi.begin())
  {
    DebugSerial.println("Begin error");
  }
  
  while (!wifi.Initialize(STA, SSID, PASS))
  {
    delay(1000);
    DebugSerial.println("Init error");
  }
  sensors.begin();
  sensors.setWaitForConversion(true);
  delay(1000);
}

void loop(void)
{    
  //Read temperature from 1W-Sensor
  DebugSerial.print("Requesting temperatures...");
  sensors.requestTemperatures();
  Serial.println("Done");
  Serial.print("Temperature for device 1 is: ");
  float temp = sensors.getTempCByIndex(0);
  Serial.println(temp);
  
  //Connect to Thingspeak
  wifi.newMux(TCP, THINGSPEAK_IP, 80);
  
  //Send current temperature
  char s[10];
  String cmd = GET;
  cmd += dtostrf(temp, 2, 2, s);
  cmd += "\r\n";
  wifi.Send(cmd);
  
  //Wait for a couple of minutes
  for (int i=0; i<MINUTES; i++)
    delay(60000);
}