STM32 hal库SPI2初始化
时间: 2023-07-31 11:08:11 浏览: 217
好的,以下是基于HAL库的SPI2初始化代码:
1. 首先,需要在 CubeMX 中配置 SPI2。
2. 在代码中包含 SPI2 的头文件:
```c
#include "stm32f4xx_hal.h"
```
3. 初始化 SPI2 的结构体:
```c
SPI_HandleTypeDef hspi2;
```
4. 配置 SPI2 的参数:
```c
hspi2.Instance = SPI2;
hspi2.Init.Mode = SPI_MODE_MASTER;
hspi2.Init.Direction = SPI_DIRECTION_2LINES;
hspi2.Init.DataSize = SPI_DATASIZE_8BIT;
hspi2.Init.CLKPolarity = SPI_POLARITY_LOW;
hspi2.Init.CLKPhase = SPI_PHASE_1EDGE;
hspi2.Init.NSS = SPI_NSS_SOFT;
hspi2.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_256;
hspi2.Init.FirstBit = SPI_FIRSTBIT_MSB;
hspi2.Init.TIMode = SPI_TIMODE_DISABLE;
hspi2.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
hspi2.Init.CRCPolynomial = 10;
```
5. 初始化 SPI2:
```c
HAL_SPI_Init(&hspi2);
```
完整的代码示例:
```c
#include "stm32f4xx_hal.h"
SPI_HandleTypeDef hspi2;
void SPI2_Init(void)
{
hspi2.Instance = SPI2;
hspi2.Init.Mode = SPI_MODE_MASTER;
hspi2.Init.Direction = SPI_DIRECTION_2LINES;
hspi2.Init.DataSize = SPI_DATASIZE_8BIT;
hspi2.Init.CLKPolarity = SPI_POLARITY_LOW;
hspi2.Init.CLKPhase = SPI_PHASE_1EDGE;
hspi2.Init.NSS = SPI_NSS_SOFT;
hspi2.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_256;
hspi2.Init.FirstBit = SPI_FIRSTBIT_MSB;
hspi2.Init.TIMode = SPI_TIMODE_DISABLE;
hspi2.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
hspi2.Init.CRCPolynomial = 10;
HAL_SPI_Init(&hspi2);
}
```
注意,以上代码仅供参考,具体的初始化参数需要根据实际情况进行调整。
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