写一个stm32f401的spi通信初始化函数
时间: 2023-02-21 15:12:00 浏览: 91
下面是一个简单的STM32F401的SPI通信初始化函数示例:
```
void SPI_Init(SPI_HandleTypeDef *hspi)
{
hspi->Instance = SPI2;
hspi->Init.Mode = SPI_MODE_MASTER;
hspi->Init.Direction = SPI_DIRECTION_2LINES;
hspi->Init.DataSize = SPI_DATASIZE_8BIT;
hspi->Init.CLKPolarity = SPI_POLARITY_LOW;
hspi->Init.CLKPhase = SPI_PHASE_1EDGE;
hspi->Init.NSS = SPI_NSS_SOFT;
hspi->Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_2;
hspi->Init.FirstBit = SPI_FIRSTBIT_MSB;
hspi->Init.TIMode = SPI_TIMODE_DISABLE;
hspi->Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
hspi->Init.CRCPolynomial = 7;
if (HAL_SPI_Init(hspi) != HAL_OK)
{
Error_Handler();
}
}
```
请注意,上面的代码是基于HAL库的,因此您需要在项目中包含HAL库的头文件。此外,请确保已正确配置SPI接口,以便在STM32F401上进行SPI通信。