#include <SPI.h>
//Give convenient names to the control pins

#define slaveAPin 10
// set up the speed, data order and data mode
SPISettings settingsA(4000000, MSBFIRST, SPI_MODE1);

void setup() {

  Serial.begin(9600);
  pinMode(slaveAPin,OUTPUT);
  SPI.begin(slaveAPin);

}

uint8_t  val1, val2, val3, val4;

void loop() {
// read four bytes from device A
 Serial.println(ReadTemp());
 delay(1000);


 }

uint8_t ReadTemp(void)
{
  SPI.beginTransaction(settingsA);
  digitalWrite (slaveAPin, LOW);
  // reading only, so data sent does not matter
  val1 = SPI.transfer(slaveAPin,0x00,SPI_CONTINUE);
  val2 = SPI.transfer(slaveAPin,0x00,SPI_CONTINUE);
  val3 = SPI.transfer(slaveAPin,0x00,SPI_CONTINUE);
  val4 = SPI.transfer(slaveAPin,0x00,SPI_LAST);
  digitalWrite (slaveAPin, HIGH);
  SPI.endTransaction();

  return val2;

}