__IO uint8_t		bSendData_g;
__IO uint16_t		uiRecData_g;
__IO uint8_t		bRecCount_g;



uint16_t psi5masterSendWord(uint16_t word)
{
	uint16_t uiData;
	uint8_t	abData[2];


	// Split data to send in two bytes
	abData[0] = (uint8_t)(word & 0x00FF);
	abData[1] = (uint8_t)((word >> 8) & 0x00FF);

	// set second byte to global send buffer
	bSendData_g = abData[0];

	// set receive buffer to 0
	uiRecData_g = 0;
	// set receive count to 0
	bRecCount_g = 0;


	//########################## send command #############################

	// set CS signal to 0
	GPIO_ResetBits(GPIOA, GPIO_Pin_15);

	// send first byte (MSB)
	SPI_I2S_SendData(SPI1, abData[1]);

	// enable SPI
	SPI_Cmd(SPI1, ENABLE);

	// wait for end of communication
	while(bRecCount_g < 2)
	{}

	// get receive data
	uiData = uiRecData_g;

	// Pause
	Delay(100);

	// Split data to send in two bytes
	word = 0x5700; // NOP
	abData[0] = (uint8_t)(word & 0x00FF);
	abData[1] = (uint8_t)((word >> 8) & 0x00FF);

	// set second byte to global send buffer
	bSendData_g = abData[0];

	// set receive buffer to 0
	uiRecData_g = 0;
	// set receive count to 0
	bRecCount_g = 0;

	//########################## send NOP #############################
	// set CS signal to 0
	GPIO_ResetBits(GPIOA, GPIO_Pin_15);

	// send first byte (MSB)
	SPI_I2S_SendData(SPI1, abData[1]);

	// enable SPI
	SPI_Cmd(SPI1, ENABLE);


	// wait for end of communication
	while(bRecCount_g < 2)
	{}

	// get receive data
	uiData = uiRecData_g;

	/*!< Return response of command*/
	GPIOB->BSRRH = GPIO_Pin_2; //reset PIN2
	return uiData;
}