SPI read problem on Teensy 3.0

#include "SPI.h"
 
// Pin definitions
const int SSpin = 10;

int i=0;
// the setup routine runs once when you press reset:
void setup() {                
  // initialize the digital pin as an output.
  pinMode(SSpin, OUTPUT);
  Serial.begin(9600);
  SPI.begin();
  SPI.setBitOrder(MSBFIRST);
  SPI.setClockDivider(SPI_CLOCK_DIV8);
  SPI.setDataMode(SPI_MODE0);
  digitalWrite(SSpin, HIGH);
}

// the loop routine runs over and over again forever:
void loop() {

 if (Serial.available())
  { 
    //wait until connection established, user entered any char
    Serial.println("Enter");
    char ch = Serial.read();

    delayMicroseconds(200);
    int a;

    // initiate communication
    digitalWrite(SSpin, LOW);
    delay(1);
    
    // Tell the slave that a command is transmitted, device should return 0
    ch = SPI.transfer(0xE6); 
    a = ch;
    Serial.println (a);
    delay(1);
    
    // Tell the slave to send Hardware serial
    ch = SPI.transfer(0xF6);
    a = ch;    
    Serial.println (a);    
    delay(1);
    
    // Send 0xFF until command processed, return value 2.
    ch = SPI.transfer(0xFF);
    a = ch;    
    Serial.println (a);    
    delay(1);
    
   // end communication, further data reading needs to be established
    digitalWrite(SSpin, HIGH);
    delay(1);
    
  }  
  
  delay(500);               // wait for a second*/

}

#include <SPI.h>




// Needed to convert the bytes from SPI to float
union u_types {
    byte b[4];
    float fval;
} data[3];  // Create 3 unions, one for each euler angle

  
void setup() {
 
 SPI.begin();
 SPI.setBitOrder(MSBFIRST);
 SPI.setDataMode(SPI_MODE0);
 SPI.setClockDivider(SPI_CLOCK_DIV4);
 pinMode(MOSI, OUTPUT);
 digitalWrite(MOSI, LOW);
 pinMode(SCK, OUTPUT);
 digitalWrite(SCK, LOW);
 pinMode(MISO, INPUT_PULLUP);
 pinMode(SS, OUTPUT);
 digitalWrite(SS, LOW);
 Serial.begin(57600); 
 
}

byte writeByteTo3Space(byte byteToWrite) {
  
  byte Result = 0;
  digitalWrite(SS,LOW);
  Result = SPI.transfer(byteToWrite);
  digitalWrite(SS,HIGH);
 return Result; 
}

void loop() {
 


 
// Clear the internal data buffer on the IMU
  byte result = writeByteTo3Space(0x01);
  delay(10); 
 
// Send start of packet:
  result = writeByteTo3Space(0xF6);
  delay(1);
  // Send command (tared euler angles)
  result = writeByteTo3Space(0x01);
  delay(1);
  // Get status of device:
  result = writeByteTo3Space(0xFF);

 
  while (result != 0x01 ) {  // Repeat until device is Ready
    delay(1);
    result = writeByteTo3Space(0xFF);
 
   }
 // Get the 12 bytes of return data from the device:
  for (int ii=0; ii<3; ii++) {
    for (int jj=0; jj<4; jj++) {
      data[ii].b[jj] =  writeByteTo3Space(0xFF);
      delay(1);
    }
  }
  
   for( int mm=0; mm<3; mm++) {
    endianSwap(data[mm].b);
   }
  
  Serial.print(data[0].fval);
  Serial.print(",");
  Serial.print(data[1].fval);
  Serial.print(",");
  Serial.println(data[2].fval);

}

inline void endianSwap(byte temp[4]) {
  byte myTemp = temp[0];
  temp[0] = temp[3];
  temp[3] = myTemp;
  myTemp = temp[1];
  temp[1] = temp[2];
  temp[2] = myTemp;
}

x = [B][COLOR="#B22222"](int16_t)[/COLOR][/B](xlo | (xhi << 8));