硬件iicstm32标准库代码

以下是使用STM32标准库开发硬件IIC的代码：

#include "stm32f10x.h"
#define I2C_Speed              100000
#define I2C1_OWN_ADDRESS7      0x30

void I2C_Configuration(void)
{
  GPIO_InitTypeDef  GPIO_InitStructure;
  I2C_InitTypeDef   I2C_InitStructure;

  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_I2C1, ENABLE);

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_OD;
  GPIO_Init(GPIOB, &GPIO_InitStructure);

  I2C_DeInit(I2C1);
  I2C_InitStructure.I2C_Mode = I2C_Mode_I2C;
  I2C_InitStructure.I2C_DutyCycle = I2C_DutyCycle_2;
  I2C_InitStructure.I2C_OwnAddress1 = I2C1_OWN_ADDRESS7;
  I2C_InitStructure.I2C_Ack = I2C_Ack_Enable;
  I2C_InitStructure.I2C_AcknowledgedAddress = I2C_AcknowledgedAddress_7bit;
  I2C_InitStructure.I2C_ClockSpeed = I2C_Speed;
  I2C_Init(I2C1, &I2C_InitStructure);

  I2C_Cmd(I2C1, ENABLE);
}

void I2C_WriteByte(uint8_t slaveAddr, uint8_t* pBuffer, uint8_t writeAddr)
{
  while(I2C_GetFlagStatus(I2C1, I2C_FLAG_BUSY));

  I2C_GenerateSTART(I2C1, ENABLE);
  while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));

  I2C_Send7bitAddress(I2C1, slaveAddr, I2C_Direction_Transmitter);
  while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));

  I2C_SendData(I2C1, writeAddr);
  while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));

  while(*pBuffer)
  {
    I2C_SendData(I2C1, *pBuffer++);
    while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));
  }

  I2C_GenerateSTOP(I2C1, ENABLE);
}

void I2C_ReadByte(uint8_t slaveAddr, uint8_t* pBuffer, uint8_t readAddr)
{
  while(I2C_GetFlagStatus(I2C1, I2C_FLAG_BUSY));

  I2C_GenerateSTART(I2C1, ENABLE);
  while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));

  I2C_Send7bitAddress(I2C1, slaveAddr, I2C_Direction_Transmitter);
  while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));

  I2C_SendData(I2C1, readAddr);
  while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_TRANSMITTED));

  I2C_GenerateSTART(I2C1, ENABLE);
  while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_MODE_SELECT));

  I2C_Send7bitAddress(I2C1, slaveAddr, I2C_Direction_Receiver);
  while(!I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED));

  while(*pBuffer)
  {
    if(*pBuffer == 1)
    {
      I2C_AcknowledgeConfig(I2C1, DISABLE);
      I2C_GenerateSTOP(I2C1, ENABLE);
    }

    if(I2C_CheckEvent(I2C1, I2C_EVENT_MASTER_BYTE_RECEIVED))
    {
      *pBuffer++ = I2C_ReceiveData(I2C1);
    }
  }

  I2C_AcknowledgeConfig(I2C1, ENABLE);
}