kile环境,f103芯片,使用HAL库编写iic通信程序,并写出.c与 .h文件

以下是基于HAL库编写的STM32F103芯片I2C通信程序的.c和.h文件示例：

.i2c.h文件

#ifndef __I2C_H
#define __I2C_H

#ifdef __cplusplus
extern "C" {
#endif

#include "stm32f1xx_hal.h"

#define I2C_TIMEOUT  0xFFFF

void I2C_Init(I2C_HandleTypeDef *hi2c);
HAL_StatusTypeDef I2C_Write(I2C_HandleTypeDef *hi2c, uint8_t dev_addr, uint8_t *data, uint16_t size);
HAL_StatusTypeDef I2C_Read(I2C_HandleTypeDef *hi2c, uint8_t dev_addr, uint8_t *data, uint16_t size);

#ifdef __cplusplus
}
#endif

#endif /* __I2C_H */

.i2c.c文件

#include "i2c.h"

/* I2C initialization function */
void I2C_Init(I2C_HandleTypeDef *hi2c) {
  GPIO_InitTypeDef GPIO_InitStruct = {0};

  /* Enable I2C GPIO clocks */
  __HAL_RCC_GPIOB_CLK_ENABLE();

  /* Configure I2C GPIO pins */
  GPIO_InitStruct.Pin = GPIO_PIN_6 | GPIO_PIN_7;
  GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;
  GPIO_InitStruct.Pull = GPIO_PULLUP;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
  GPIO_InitStruct.Alternate = GPIO_AF4_I2C1;
  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

  /* Enable I2C clock */
  __HAL_RCC_I2C1_CLK_ENABLE();

  /* Configure I2C */
  hi2c->Instance = I2C1;
  hi2c->Init.ClockSpeed = 100000; /* I2C clock frequency */
  hi2c->Init.DutyCycle = I2C_DUTYCYCLE_2;
  hi2c->Init.OwnAddress1 = 0;
  hi2c->Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
  hi2c->Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
  hi2c->Init.OwnAddress2 = 0;
  hi2c->Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
  hi2c->Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
  HAL_I2C_Init(hi2c);
}

/* I2C write function */
HAL_StatusTypeDef I2C_Write(I2C_HandleTypeDef *hi2c, uint8_t dev_addr, uint8_t *data, uint16_t size) {
  HAL_StatusTypeDef status;

  /* Wait until the bus is ready */
  while (HAL_I2C_GetState(hi2c) != HAL_I2C_STATE_READY);

  /* Send device address with write command */
  status = HAL_I2C_Master_Transmit(hi2c, dev_addr << 1, data, size, I2C_TIMEOUT);

  /* Return status */
  return status;
}

/* I2C read function */
HAL_StatusTypeDef I2C_Read(I2C_HandleTypeDef *hi2c, uint8_t dev_addr, uint8_t *data, uint16_t size) {
  HAL_StatusTypeDef status;

  /* Wait until the bus is ready */
  while (HAL_I2C_GetState(hi2c) != HAL_I2C_STATE_READY);

  /* Send device address with read command */
  status = HAL_I2C_Master_Receive(hi2c, (dev_addr << 1) | 1, data, size, I2C_TIMEOUT);

  /* Return status */
  return status;
}

在主函数中，首先需要初始化I2C：

I2C_HandleTypeDef hi2c1;

int main(void) {
  /* Initialize HAL Library */
  HAL_Init();

  /* Initialize I2C */
  I2C_Init(&hi2c1);

  /* ... */
}

之后，可以使用I2C_Write和I2C_Read函数向I2C设备写入和读取数据：

#define I2C_DEVICE_ADDR 0x50

uint8_t data[2] = {0xAA, 0x55};

/* Write data */
if (I2C_Write(&hi2c1, I2C_DEVICE_ADDR, data, 2) == HAL_OK) {
  /* ... */
}

/* Read data */
if (I2C_Read(&hi2c1, I2C_DEVICE_ADDR, data, 2) == HAL_OK) {
  /* ... */
}