stm32hal库iic通信

STM32HAL库提供了一些函数来实现I2C通信。以下是一个简单的例子：

1. 首先，需要定义I2C的句柄和I2C的配置参数：

I2C_HandleTypeDef hi2c1;
I2C_InitTypeDef i2cConfig;

2. 然后，需要初始化I2C的配置参数：

i2cConfig.ClockSpeed = 100000;
i2cConfig.DutyCycle = I2C_DUTYCYCLE_2;
i2cConfig.OwnAddress1 = 0;
i2cConfig.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
i2cConfig.DualAddressMode = I2C_DUALADDRESS_DISABLE;
i2cConfig.OwnAddress2 = 0;
i2cConfig.GeneralCallMode = I2C_GENERALCALL_DISABLE;
i2cConfig.NoStretchMode = I2C_NOSTRETCH_DISABLE;

3. 接着，需要初始化I2C的句柄：

hi2c1.Instance = I2C1;
hi2c1.Init = i2cConfig;
hi2c1.Mode = HAL_I2C_MODE_MASTER;
hi2c1.Init.OwnAddress1 = 0;
hi2c1.Init.OwnAddress2 = 0;
hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;

4. 调用HAL_I2C_Init()函数初始化I2C：

HAL_I2C_Init(&hi2c1);

5. 然后，使用HAL_I2C_Master_Transmit()函数发送数据：

uint8_t data[2] = {0x01, 0x02};
HAL_I2C_Master_Transmit(&hi2c1, 0x50, data, 2, 100);

6. 使用HAL_I2C_Master_Receive()函数接收数据：

uint8_t data[2];
HAL_I2C_Master_Receive(&hi2c1, 0x50, data, 2, 100);

这就是一个简单的STM32HAL库实现I2C通信的例子。具体的使用可以根据实际情况进行调整。