/*## Configure the SPI4 as Master and SPI5 as Slave ###*/
Spi4Handle.Init.Direction         	= SPI_DIRECTION_2LINES;
Spi4Handle.Init.CLKPhase          	= SPI_PHASE_1EDGE;//read at DCLK falling edge
Spi4Handle.Init.CLKPolarity      	 = SPI_POLARITY_HIGH;//read at DCLK falling edge 
Spi4Handle.Init.DataSize        	= SPI_DATASIZE_16BIT;
Spi4Handle.Init.NSS               	= SPI_NSS_SOFT;// NSS pin is configured as GPIO output for /CS
Spi4Handle.Init.Mode 		= SPI_MODE_MASTER;// SPI4 as SPI Master
Spi5Handle.Init.Direction         	= SPI_DIRECTION_2LINES_RXONLY;// only receive data 
Spi5Handle.Init.NSS               	= SPI_NSS_HARD_INPUT;
Spi5Handle.Init.Mode 		= SPI_MODE_SLAVE;// SPI5 as SPI Slave
/*## Enable SPI4 as Master and SPI5 as Slave to Receive AD7606B Codes ###*/
__HAL_SPI_ENABLE(&Spi4Handle);
__HAL_SPI_ENABLE(&Spi5Handle);
while (SPI4_CNVCount < SPI4_CNVNum)
{
	CLR_CNV();
	SET_CNV();//AD7606B conversion start
// wait for conversion finish, BUSY goes from high to low. Polling or interrupt mode
	while (BUSY == SET) {;} 
	while (SPI4_WordCount < SPI4_CNVWordNum)// code number to read per conversion cycle
 	{
		CLR_CS();
		*(__IO uint8_t *)&Spi4Handle.Instance->DR = 0;
		while (__HAL_SPI_GET_FLAG(&Spi4Handle, SPI_FLAG_RXNE) != SET); 				Delay_xus(1);// need half SCLK cycle delay for slow SCLK rate < 10MHz
		SET_CS();
		SPI_RxBuffer[RxBuf_Idn] = *(__IO uint16_t *)&Spi4Handle.Instance->DR;
SPI_RxBuffer[RxBuf_Idn+ADCSDO1_WordIdn] = *(__IO uint16_t \\ *)&Spi5Handle.Instance->DR;
		RxBuf_Idn++;
  	     	SPI4_WordCount += 2;
	}
	SPI4_CNVCount++;
	RxBuf_Idn = SPI4_CNVCount * SPI4_CNVWordNum;
	SPI4_WordCount = 0;
}//while (SPI4_CNVCount < SPI4_CNVNum)
__HAL_SPI_DISABLE(&Spi4Handle);
__HAL_SPI_DISABLE(&Spi5Handle);