MAX11300 no response

void	Pixi_Init(void)

{

	uint16_t	result;



	result = pixiReadReg(0x10);

	result = pixiReadReg(0x00);

	if(result==0x0424)

		result=0;



	pixiWriteReg(device_control,0x0044);

	pixiWriteReg(port_cfg_00,0x5200);



}



void	pixiWriteReg(uint8_t thisReg, uint16_t thisVal)

{

	uint8_t tx_data[4];

	//uint8_t rx_data[4];



	tx_data[0] = (thisReg<<1);

	tx_data[1] = thisVal>>8;

	tx_data[2] = thisVal&0xFF;



	HAL_GPIO_WritePin(PIXI_CS_GPIO_Port, PIXI_CS_Pin, GPIO_PIN_RESET);	// enable selector output

	HAL_SPI_Transmit(&hspi1, tx_data, 3, HAL_MAX_DELAY);

	HAL_GPIO_WritePin(PIXI_CS_GPIO_Port, PIXI_CS_Pin, GPIO_PIN_SET);	// enable selector output

}





uint16_t	pixiReadReg(uint8_t thisReg)

{

	uint8_t tx_data[4];

	uint8_t rx_data[4];



	tx_data[0] = (thisReg<<1)|0x01;		//read device ID



	HAL_GPIO_WritePin(PIXI_CS_GPIO_Port, PIXI_CS_Pin, GPIO_PIN_RESET);	// enable selector output

	HAL_SPI_Transmit(&hspi1, tx_data, 1, HAL_MAX_DELAY);

	//HAL_Delay(5);

	HAL_SPI_Receive(&hspi1, rx_data, 2, HAL_MAX_DELAY);

	HAL_GPIO_WritePin(PIXI_CS_GPIO_Port, PIXI_CS_Pin, GPIO_PIN_SET);	// enable selector output



	return(rx_data[1]<<16|rx_data[0]);



}