HAL库F1编写 gpiob0，gpiob1，编写iic通信程序

以下是使用HAL库在STM32F1中操作GPIOB0、GPIOB1的代码示例，以及I2C通信程序的示例代码：

操作GPIOB0、GPIOB1示例代码：

#include "stm32f1xx_hal.h"

GPIO_InitTypeDef GPIO_InitStruct;

void GPIO_Init(void)
{
  /* GPIO Ports Clock Enable */
  __HAL_RCC_GPIOB_CLK_ENABLE();
  
  /* Configure GPIO pin : PB0 */
  GPIO_InitStruct.Pin = GPIO_PIN_0;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
  
  /* Configure GPIO pin : PB1 */
  GPIO_InitStruct.Pin = GPIO_PIN_1;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
}

int main(void)
{
  /* MCU Configuration--------------------------------------------------------*/
  
  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();
  
  /* Configure the system clock */
  SystemClock_Config();
  
  /* Initialize all configured peripherals */
  GPIO_Init();
  
  /* Infinite loop */
  while (1)
  {
    HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_0);
    HAL_GPIO_TogglePin(GPIOB, GPIO_PIN_1);
    HAL_Delay(500);
  }
}

I2C通信程序示例代码：

#include "stm32f1xx_hal.h"

#define I2C_ADDRESS 0x50 //I2C从机地址

I2C_HandleTypeDef hi2c1;

uint8_t buffer[10]; //数据缓存区

void I2C_Init(void)
{
  hi2c1.Instance = I2C1;
  hi2c1.Init.ClockSpeed = 100000;
  hi2c1.Init.DutyCycle = I2C_DUTYCYCLE_2;
  hi2c1.Init.OwnAddress1 = 0;
  hi2c1.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
  hi2c1.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
  hi2c1.Init.OwnAddress2 = 0;
  hi2c1.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
  hi2c1.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
  if (HAL_I2C_Init(&hi2c1) != HAL_OK)
  {
    Error_Handler();
  }
}

void I2C_Write(uint8_t address, uint8_t *data, uint16_t length)
{
  if (HAL_I2C_Mem_Write(&hi2c1, I2C_ADDRESS, address, I2C_MEMADD_SIZE_8BIT, data, length, 1000) != HAL_OK)
  {
    Error_Handler();
  }
}

void I2C_Read(uint8_t address, uint8_t *data, uint16_t length)
{
  if (HAL_I2C_Mem_Read(&hi2c1, I2C_ADDRESS, address, I2C_MEMADD_SIZE_8BIT, data, length, 1000) != HAL_OK)
  {
    Error_Handler();
  }
}

int main(void)
{
  /* MCU Configuration--------------------------------------------------------*/
  
  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();
  
  /* Configure the system clock */
  SystemClock_Config();
  
  /* Initialize all configured peripherals */
  I2C_Init();
  
  /* Infinite loop */
  while (1)
  {
    //写入数据
    buffer[0] = 0x01;
    buffer[1] = 0x02;
    I2C_Write(0x00, buffer, 2);
    
    //读取数据
    I2C_Read(0x00, buffer, 2);
    
    HAL_Delay(500);
  }
}

需要注意的是，I2C通信需要外部I2C设备的支持，此处只提供示例代码。