STM32H750XB_RT-THREAD/23-I2C—读写EEPROM/User/i2c/bsp_i2c_ee.c

/**
  ******************************************************************************
  * @file    bsp_i2c_ee.c
  * @author  STMicroelectronics
  * @version V1.0
  * @date    2015-xx-xx
  * @brief   i2c EEPROM(AT24C02)Ӧ<EFBFBD>ú<EFBFBD><EFBFBD><EFBFBD>bsp
  ******************************************************************************
  * @attention
  *
  * ʵ<EFBFBD><EFBFBD>ƽ̨:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>  STM32 H750 <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 
  * <EFBFBD><EFBFBD>̳    :http://www.firebbs.cn
  * <EFBFBD>Ա<EFBFBD>    :http://firestm32.taobao.com
  *
  ******************************************************************************
  */ 

#include "./i2c/bsp_i2c_ee.h"
#include "./usart/bsp_debug_usart.h"


I2C_HandleTypeDef  I2C_Handle; 

/**
  * @brief  I2C1 I/O<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  * @param  <EFBFBD><EFBFBD>
  * @retval <EFBFBD><EFBFBD>
  */
static void I2C_GPIO_Config(void)
{

	GPIO_InitTypeDef  GPIO_InitStructure;
//	RCC_PeriphCLKInitTypeDef RCC_PeriphClkInit;
	  
	/*ʹ<><CAB9>I2Cʱ<43><CAB1>*/
	EEPROM_I2C_CLK_ENABLE();

	/*ʹ<><CAB9>I2C<32><43>IO<49><4F>ʱ<EFBFBD><CAB1>*/
	EEPROM_I2C_SCL_GPIO_CLK_ENABLE();
	EEPROM_I2C_SDA_GPIO_CLK_ENABLE(); 

	/*<2A><><EFBFBD><EFBFBD>I2C<32><43>SCL<43><4C>*/   
	GPIO_InitStructure.Pin = EEPROM_I2C_SCL_PIN;
	GPIO_InitStructure.Mode = GPIO_MODE_AF_OD;
	GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_HIGH;
	GPIO_InitStructure.Pull  = GPIO_NOPULL;
	GPIO_InitStructure.Alternate = EEPROM_I2C_SCL_AF;
	HAL_GPIO_Init(EEPROM_I2C_SCL_GPIO_PORT, &GPIO_InitStructure);

	/*<2A><><EFBFBD><EFBFBD>I2C<32><43>SDA<44><41>*/  
	GPIO_InitStructure.Pin = EEPROM_I2C_SDA_PIN;
	HAL_GPIO_Init(EEPROM_I2C_SDA_GPIO_PORT, &GPIO_InitStructure);

	/* Force the I2C peripheral clock reset */  
	EEPROM_I2C_FORCE_RESET(); 

	/* Release the I2C peripheral clock reset */  
	EEPROM_I2C_RELEASE_RESET(); 

}

/**
  * @brief  I2C <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ģʽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
  * @param  <EFBFBD><EFBFBD>
  * @retval <EFBFBD><EFBFBD>
  */
static void I2C_Mode_Config(void)
{
    /* I2C <20><><EFBFBD><EFBFBD> */
    I2C_Handle.Instance = EEPROM_I2C;
    I2C_Handle.Init.Timing           = 0x40604E73;//100KHz
    I2C_Handle.Init.OwnAddress1      = 0;
    I2C_Handle.Init.AddressingMode   = I2C_ADDRESSINGMODE_7BIT;
    I2C_Handle.Init.DualAddressMode  = I2C_DUALADDRESS_DISABLE;
    I2C_Handle.Init.OwnAddress2      = 0;
    I2C_Handle.Init.OwnAddress2Masks = I2C_OA2_NOMASK;
    I2C_Handle.Init.GeneralCallMode  = I2C_GENERALCALL_DISABLE;
    I2C_Handle.Init.NoStretchMode    = I2C_NOSTRETCH_DISABLE;

    /* Init the I2C */
    HAL_I2C_Init(&I2C_Handle);	

    HAL_I2CEx_AnalogFilter_Config(&I2C_Handle, I2C_ANALOGFILTER_ENABLE);    
}

/**
  * @brief  I2C <EFBFBD><EFBFBD><EFBFBD><EFBFBD>(EEPROM)<EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD>
  * @param  <EFBFBD><EFBFBD>
  * @retval <EFBFBD><EFBFBD>
  */
void I2C_EE_Init(void)
{
   
	I2C_GPIO_Config();
	I2C_Mode_Config();
	
}

/**
  * @brief   <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>е<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><EFBFBD>I2C EEPROM<EFBFBD><EFBFBD>
  * @param   
  *		@arg pBuffer:<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD>
  *		@arg WriteAddr:д<EFBFBD><EFBFBD>ַ
  *     @arg NumByteToWrite:д<EFBFBD><EFBFBD><EFBFBD>ֽ<EFBFBD><EFBFBD><EFBFBD>
  * @retval  <EFBFBD><EFBFBD>
  */
void I2C_EE_BufferWrite(uint8_t* pBuffer, uint8_t WriteAddr, uint16_t NumByteToWrite)
{
  uint8_t NumOfPage = 0, NumOfSingle = 0, Addr = 0, count = 0;

  Addr = WriteAddr % EEPROM_PAGESIZE;
  count = EEPROM_PAGESIZE - Addr;
  NumOfPage =  NumByteToWrite / EEPROM_PAGESIZE;
  NumOfSingle = NumByteToWrite % EEPROM_PAGESIZE;
 
  /* If WriteAddr is I2C_PageSize aligned  */
  if(Addr == 0) 
  {
    /* If NumByteToWrite < I2C_PageSize */
    if(NumOfPage == 0) 
    {
      I2C_EE_PageWrite(pBuffer, WriteAddr, NumOfSingle);
    }
    /* If NumByteToWrite > I2C_PageSize */
    else  
    {
      while(NumOfPage--)
      {
        I2C_EE_PageWrite(pBuffer, WriteAddr, EEPROM_PAGESIZE); 
        WriteAddr +=  EEPROM_PAGESIZE;
        pBuffer += EEPROM_PAGESIZE;
      }

      if(NumOfSingle!=0)
      {
        I2C_EE_PageWrite(pBuffer, WriteAddr, NumOfSingle);
      }
    }
  }
  /* If WriteAddr is not I2C_PageSize aligned  */
  else 
  {
    /* If NumByteToWrite < I2C_PageSize */
    if(NumOfPage== 0) 
    {
      I2C_EE_PageWrite(pBuffer, WriteAddr, NumOfSingle);
    }
    /* If NumByteToWrite > I2C_PageSize */
    else
    {
      NumByteToWrite -= count;
      NumOfPage =  NumByteToWrite / EEPROM_PAGESIZE;
      NumOfSingle = NumByteToWrite % EEPROM_PAGESIZE;	
      
      if(count != 0)
      {  
        I2C_EE_PageWrite(pBuffer, WriteAddr, count);
        WriteAddr += count;
        pBuffer += count;
      } 
      
      while(NumOfPage--)
      {
        I2C_EE_PageWrite(pBuffer, WriteAddr, EEPROM_PAGESIZE);
        WriteAddr +=  EEPROM_PAGESIZE;
        pBuffer += EEPROM_PAGESIZE;  
      }
      if(NumOfSingle != 0)
      {
        I2C_EE_PageWrite(pBuffer, WriteAddr, NumOfSingle); 
      }
    }
  }  
}

/**
  * @brief   дһ<EFBFBD><EFBFBD><EFBFBD>ֽڵ<EFBFBD>I2C EEPROM<EFBFBD><EFBFBD>
  * @param   
  *		@arg pBuffer:<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD>
  *		@arg WriteAddr:д<EFBFBD><EFBFBD>ַ 
  * @retval  <EFBFBD><EFBFBD>
  */
uint32_t I2C_EE_ByteWrite(uint8_t* pBuffer, uint8_t WriteAddr)
{
	HAL_StatusTypeDef status = HAL_OK;

	status = HAL_I2C_Mem_Write(&I2C_Handle, EEPROM_ADDRESS, (uint16_t)WriteAddr, I2C_MEMADD_SIZE_8BIT, pBuffer, 1, 100); 

	/* Check the communication status */
	if(status != HAL_OK)
	{
	/* Execute user timeout callback */
	//I2Cx_Error(Addr);
	}
	while (HAL_I2C_GetState(&I2C_Handle) != HAL_I2C_STATE_READY)
	{
		
	}

	/* Check if the EEPROM is ready for a new operation */
	while (HAL_I2C_IsDeviceReady(&I2C_Handle, EEPROM_ADDRESS, EEPROM_MAX_TRIALS, I2Cx_TIMEOUT_MAX) == HAL_TIMEOUT);

	/* Wait for the end of the transfer */
	while (HAL_I2C_GetState(&I2C_Handle) != HAL_I2C_STATE_READY)
	{
		
	}
	return status;
}

/**
  * @brief   <EFBFBD><EFBFBD>EEPROM<EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD>дѭ<EFBFBD><EFBFBD><EFBFBD>п<EFBFBD><EFBFBD><EFBFBD>д<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֽڣ<EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD>д<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֽ<EFBFBD><EFBFBD><EFBFBD>
  *          <EFBFBD><EFBFBD><EFBFBD>ܳ<EFBFBD><EFBFBD><EFBFBD>EEPROMҳ<EFBFBD>Ĵ<EFBFBD>С<EFBFBD><EFBFBD>AT24C02ÿҳ<EFBFBD><EFBFBD>8<EFBFBD><EFBFBD><EFBFBD>ֽ<EFBFBD>
  * @param   
  *		@arg pBuffer:<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD>
  *		@arg WriteAddr:д<EFBFBD><EFBFBD>ַ
  *     @arg NumByteToWrite:д<EFBFBD><EFBFBD><EFBFBD>ֽ<EFBFBD><EFBFBD><EFBFBD>
  * @retval  <EFBFBD><EFBFBD>
  */
uint32_t I2C_EE_PageWrite(uint8_t* pBuffer, uint8_t WriteAddr, uint8_t NumByteToWrite)
{
	HAL_StatusTypeDef status = HAL_OK;
	/* Write EEPROM_PAGESIZE */
	status=HAL_I2C_Mem_Write(&I2C_Handle, EEPROM_ADDRESS,WriteAddr, I2C_MEMADD_SIZE_8BIT, (uint8_t*)(pBuffer),NumByteToWrite, 100);

	while (HAL_I2C_GetState(&I2C_Handle) != HAL_I2C_STATE_READY)
	{
		
	}

	/* Check if the EEPROM is ready for a new operation */
	while (HAL_I2C_IsDeviceReady(&I2C_Handle, EEPROM_ADDRESS, EEPROM_MAX_TRIALS, I2Cx_TIMEOUT_MAX) == HAL_TIMEOUT);

	/* Wait for the end of the transfer */
	while (HAL_I2C_GetState(&I2C_Handle) != HAL_I2C_STATE_READY)
	{
		
	}
	return status;
}

/**
  * @brief   <EFBFBD><EFBFBD>EEPROM<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡһ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 
  * @param   
  *		@arg pBuffer:<EFBFBD><EFBFBD><EFBFBD>Ŵ<EFBFBD>EEPROM<EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݵĻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD>
  *		@arg WriteAddr:<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݵ<EFBFBD>EEPROM<EFBFBD>ĵ<EFBFBD>ַ
  *     @arg NumByteToWrite:Ҫ<EFBFBD><EFBFBD>EEPROM<EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD>ֽ<EFBFBD><EFBFBD><EFBFBD>
  * @retval  <EFBFBD><EFBFBD>
  */
uint32_t I2C_EE_BufferRead(uint8_t* pBuffer, uint8_t ReadAddr, uint16_t NumByteToRead)
{
	HAL_StatusTypeDef status = HAL_OK;
	
	status=HAL_I2C_Mem_Read(&I2C_Handle,EEPROM_ADDRESS,ReadAddr, I2C_MEMADD_SIZE_8BIT, (uint8_t *)pBuffer, NumByteToRead,1000);

	return status;
}


/*********************************************END OF FILE**********************/