STM32Cube硬件SPI读取W25QXXID

一、接口介绍

1.1HAL_SPI_TransmitReceive()

参数1：SPI外设句柄；

参数2：要发送的数据缓冲区的指针；

参数3：接收数据的缓冲区的指针；

参数4：发送和接收的数据字节数；

参数5：超时时间。

1.2HAL_SPI_Transmit()__去掉参数3

1.3HAL_SPI_Receive()__去掉参数2

二、Cube配置

 

 

三、编程

void T3(void const * argument)
{
  /* USER CODE BEGIN T3 */
	  printf("serial start...\r\n");
	  uint16_t ID = W25Qxx_ReadID();
	  printf("%#x\r\n", ID);
	  ID = W25QReadID();
	  printf("%#x\r\n", ID);
	  printf("serial end...\r\n");
  /* Infinite loop */
  for(;;)
  {
	  osDelay(1);
  }
  /* USER CODE END T3 */
}

uint8_t SPI1_TransmitReceive(uint8_t Senddata) {
	uint8_t Receivedata;
	HAL_SPI_TransmitReceive(&hspi1, &Senddata, &Receivedata, 1, 1000);
	return Receivedata;
}//发送一个字节并返回一个字节
uint16_t W25QReadID(void) {
	uint16_t res = 0;
	HAL_GPIO_WritePin(CS_GPIO_Port, CS_Pin, 0);//select
	SPI1_TransmitReceive(0x90);//查阅W25Q的要求
	SPI1_TransmitReceive(0x00);
	SPI1_TransmitReceive(0x00);
	SPI1_TransmitReceive(0x00);
	res |=  SPI1_TransmitReceive(0xFF) << 8;//发送任意数据，目的在于接收返回值
	res |= SPI1_TransmitReceive(0xFF);
	HAL_GPIO_WritePin(CS_GPIO_Port, CS_Pin, 1);
	return res;
}
...
uint16_t W25Qxx_ReadID(void)
{
  uint16_t res;
  uint8_t Txbuff[4] ={0x90, 0x00, 0x00, 0x00};
  HAL_GPIO_WritePin(CS_GPIO_Port, CS_Pin, 0);//select
  HAL_SPI_Transmit(&hspi1,(uint8_t *)Txbuff, 4, 4000);
  HAL_SPI_Receive(&hspi1,(uint8_t *)&res, 2 , 2000);
  HAL_GPIO_WritePin(CS_GPIO_Port, CS_Pin, 1);
  return res;
}

四、现象