【STM32CubeMX】9，STM32之I2C，EEPROM

if(HAL_GPIO_ReadPin(GPIOA,GPIO_PIN_0)==GPIO_PIN_SET)

         { HAL_Delay(500);

testarr[0]+=3;

if(HAL_I2C_Mem_Write(&hi2c1,0xa0,60,I2C_MEMADD_SIZE_8BIT,&testarr[0],1,3000)==HAL_OK)

{

printf (" testarr[0]=%drn",testarr[0]);

printf ("write OK !!!rn");

HAL_Delay(5);

}

else 

printf ("write false !!!rn");

// HAL_I2C_Mem_Write(&hi2c1,EEPROM_I2C_ADDRESS,60,I2C_MEMADD_SIZE_8BIT,&testarr[1],1,3000);//&hi2c1³öÎÊÌ⣬ÁíÍâÒ²²»ÊÇ0xa1

if( HAL_I2C_Mem_Read(&hi2c1,0xa1,60,I2C_MEMADD_SIZE_8BIT,&testarr[1],1,3000)==HAL_OK)//Ìî0xa1,»òÕß0xa0¶¼¿ÉÒÔ

{

printf ("Read OK !!!rn");

printf (" testarr[1]=%drn",testarr[1]);

}

else 

printf ("Read false !!!rn");

}

HAL_Delay(500);

testarr[0]+=3;

if(HAL_I2C_Mem_Write(&hi2c1,0xa0,60,I2C_MEMADD_SIZE_8BIT,&testarr[0],1,3000)==HAL_OK)

{

printf (" testarr[0]=%drn",testarr[0]);

printf ("write OK !!!rn");

HAL_Delay(5);

}

else 

printf ("write false !!!rn");

// HAL_I2C_Mem_Write(&hi2c1,EEPROM_I2C_ADDRESS,60,I2C_MEMADD_SIZE_8BIT,&testarr[1],1,3000);//&hi2c1³öÎÊÌ⣬ÁíÍâÒ²²»ÊÇ0xa1

if( HAL_I2C_Mem_Read(&hi2c1,0xa1,60,I2C_MEMADD_SIZE_8BIT,&testarr[1],1,3000)==HAL_OK)//Ìî0xa1,»òÕß0xa0¶¼¿ÉÒÔ

{

printf ("Read OK !!!rn");

printf (" testarr[1]=%drn",testarr[1]);

}

else 

printf ("Read false !!!rn");

}

1，这个问题搞了几天了，最后是借鉴硬石科技写的底层EEPROM，自己的一直通不了，很郁闷。

#ifndef __I2C_EEPROM_H__

#define __I2C_EEPROM_H__

/* °üº¬Í·Îļþ ----------------------------------------------------------------*/

#include "stm32f1xx_hal.h"

/* ÀàÐͶ¨Òå ------------------------------------------------------------------*/

/* ºê¶¨Òå --------------------------------------------------------------------*/

#define I2C_OWN_ADDRESS                            0x0A              // stm32±¾»úI2CµØÖ·

#define I2C_SPEEDCLOCK                             400000            // I2CͨÐÅËÙÂÊ(×î´óΪ400K)

#define I2C_DUTYCYCLE                              I2C_DUTYCYCLE_2   // I2CÕ¼¿Õ±Èģʽ£º1/2 

#define EEPROM_I2Cx                                I2C1

#define EEPROM_I2C_RCC_CLK_ENABLE()                __HAL_RCC_I2C1_CLK_ENABLE()

#define EEPROM_I2C_RCC_CLK_DISABLE()               __HAL_RCC_I2C1_CLK_DISABLE()

#define EEPROM_I2C_GPIO_CLK_ENABLE()               __HAL_RCC_GPIOB_CLK_ENABLE()

#define EEPROM_I2C_GPIO_CLK_DISABLE()              __HAL_RCC_GPIOB_CLK_DISABLE()   

#define EEPROM_I2C_GPIO_PORT                       GPIOB   

#define EEPROM_I2C_SCL_PIN                         GPIO_PIN_6

#define EEPROM_I2C_SDA_PIN                         GPIO_PIN_7

/* 

 * EEPROM 2kb = 2048bit = 2048/8 B = 256 B

 * 32 pages of 8 bytes each

 *

 * Device Address

 * 1 0 1 0 A2 A1 A0 R/W

 * 1 0 1 0 0  0  0  0 = 0XA0

 * 1 0 1 0 0  0  0  1 = 0XA1 

 */

/* EEPROM Addresses defines */ 

#define EEPROM_I2C_ADDRESS                         0xA0

/* À©Õ¹±äÁ¿ ------------------------------------------------------------------*/

extern I2C_HandleTypeDef hi2c_eeprom;

/* º¯ÊýÉùÃ÷ ------------------------------------------------------------------*/

void               MX_I2C_EEPROM_Init(void);

void               I2C_EEPROM_WriteData(uint16_t Addr, uint8_t Reg, uint8_t Value);

HAL_StatusTypeDef  I2C_EEPROM_WriteBuffer(uint16_t Addr, uint8_t Reg, uint16_t RegSize, uint8_t *pBuffer, uint16_t Length);

HAL_StatusTypeDef I2C_EEPROM_WriteAnyLength(uint16_t Addr, uint8_t Reg, uint16_t RegSize, uint8_t *pBuffer, uint16_t Length);

uint8_t            I2C_EEPROM_ReadData(uint16_t Addr, uint8_t Reg);

HAL_StatusTypeDef  I2C_EEPROM_ReadBuffer(uint16_t Addr, uint8_t Reg, uint16_t RegSize, uint8_t *pBuffer, uint16_t Length);

HAL_StatusTypeDef  I2C_EEPROM_IsDeviceReady(uint16_t DevAddress, uint32_t Trials);

#endif /* __I2C_EEPROM_H__ */

/******************* (C) COPYRIGHT 2015-2020 ӲʯǶÈëʽ¿ª·¢ÍÅ¶Ó *****END OF FILE****/

/**

  ******************************************************************************

  * ÎļþÃû³Ì: bsp_EEPROM.c 

  * ×÷    Õß: ӲʯǶÈëʽ¿ª·¢ÍŶÓ

  * °æ    ±¾: V1.0

  * ±àдÈÕÆÚ: 2015-10-04

  * ¹¦    ÄÜ: °åÔØEEPROM£¨AT24C02£©µ×²ãÇý¶¯³ÌÐò

  ******************************************************************************

  * ˵Ã÷£º

  * ±¾Àý³ÌÅäÌ×Ӳʯstm32¿ª·¢°åYS-F1ProʹÓá£

  * 

  * ÌÔ±¦£º

  * ÂÛ̳£ºhttp://www.ing10bbs.com

  * °æȨ¹éӲʯǶÈëʽ¿ª·¢ÍŶÓËùÓУ¬ÇëÎðÉÌÓá£

  ******************************************************************************

  */

/* °üº¬Í·Îļþ ----------------------------------------------------------------*/

#include "bsp_EEPROM.h"

/* ˽ÓÐÀàÐͶ¨Òå --------------------------------------------------------------*/

/* ˽Óк궨Òå ----------------------------------------------------------------*/

#define EVAL_I2Cx_TIMEOUT_MAX                   3000

/* ˽ÓбäÁ¿ ------------------------------------------------------------------*/

I2C_HandleTypeDef hi2c_eeprom;

uint32_t I2cxTimeout = EVAL_I2Cx_TIMEOUT_MAX;

/* À©Õ¹±äÁ¿ ------------------------------------------------------------------*/

/* ˽Óк¯ÊýÔ­ÐÎ --------------------------------------------------------------*/

/* º¯ÊýÌå --------------------------------------------------------------------*/

/**

  * º¯Êý¹¦ÄÜ: I2CÍâÉè³õʼ»¯

  * ÊäÈë²ÎÊý: ÎÞ

  * ·µ »Ø Öµ: ÎÞ

  * ˵    Ã÷£ºÎÞ

  */

void MX_I2C_EEPROM_Init(void)

{

  hi2c_eeprom.Instance             = EEPROM_I2Cx;

  hi2c_eeprom.Init.ClockSpeed      = I2C_SPEEDCLOCK;

  hi2c_eeprom.Init.DutyCycle       = I2C_DUTYCYCLE;

  hi2c_eeprom.Init.OwnAddress1     = 0;

  hi2c_eeprom.Init.AddressingMode  = I2C_ADDRESSINGMODE_7BIT;

  hi2c_eeprom.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;

  hi2c_eeprom.Init.OwnAddress2     = 0;

  hi2c_eeprom.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;

  hi2c_eeprom.Init.NoStretchMode   = I2C_NOSTRETCH_DISABLE;

  HAL_I2C_Init(&hi2c_eeprom);

}

/**

  * º¯Êý¹¦ÄÜ: I2CÍâÉèÓ²¼þ³õʼ»¯ÅäÖÃ

  * ÊäÈë²ÎÊý: hi2c£ºI2C¾ä±úÀàÐÍÖ¸Õë

  * ·µ »Ø Öµ: ÎÞ

  * ˵    Ã÷: ¸Ãº¯Êý±»HAL¿âÄÚ²¿µ÷ÓÃ

  */

void HAL_I2C_MspInit(I2C_HandleTypeDef* hi2c)

{

  GPIO_InitTypeDef GPIO_InitStruct;

  if(hi2c->Instance==EEPROM_I2Cx)

  {  

    /* ʹÄÜÍâÉèʱÖÓ */

    EEPROM_I2C_RCC_CLK_ENABLE();        

    EEPROM_I2C_GPIO_CLK_ENABLE();

    /**I2C1 GPIO Configuration    

    PB6     ------> I2C1_SCL

    PB7     ------> I2C1_SDA 

    */

    GPIO_InitStruct.Pin = EEPROM_I2C_SCL_PIN|EEPROM_I2C_SDA_PIN;

    GPIO_InitStruct.Mode = GPIO_MODE_AF_OD;

    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;

    HAL_GPIO_Init(EEPROM_I2C_GPIO_PORT, &GPIO_InitStruct);

  }

}

/**

  * º¯Êý¹¦ÄÜ: I2CÍâÉèÓ²¼þ·´³õʼ»¯ÅäÖÃ

  * ÊäÈë²ÎÊý: hi2c£ºI2C¾ä±úÀàÐÍÖ¸Õë

  * ·µ »Ø Öµ: ÎÞ

  * ˵    Ã÷: ¸Ãº¯Êý±»HAL¿âÄÚ²¿µ÷ÓÃ

  */

void HAL_I2C_MspDeInit(I2C_HandleTypeDef* hi2c)

{

  if(hi2c->Instance==EEPROM_I2Cx)

  {

    /* ½ûÓÃÍâÉèʱÖÓ */

    EEPROM_I2C_GPIO_CLK_DISABLE();

    /**I2C1 GPIO Configuration    

    PB6     ------> I2C1_SCL

    PB7     ------> I2C1_SDA 

    */

    HAL_GPIO_DeInit(EEPROM_I2C_GPIO_PORT, EEPROM_I2C_SCL_PIN|EEPROM_I2C_SDA_PIN);

  }

}

/**

  * º¯Êý¹¦ÄÜ: I2CͨÐÅ´íÎó´¦Àíº¯Êý

  * ÊäÈë²ÎÊý: ÎÞ

  * ·µ »Ø Öµ: ÎÞ

  * ˵    Ã÷: Ò»°ãÔÚI2CͨÐų¬Ê±Ê±µ÷Óøú¯Êý

  */

static void I2C_EEPROM_Error (void)

{

  /* ·´³õʼ»¯I2CͨÐÅ×ÜÏß */

  HAL_I2C_DeInit(&hi2c_eeprom);

  /* ÖØгõʼ»¯I2CͨÐÅ×ÜÏß*/

  MX_I2C_EEPROM_Init();

  printf("EEPROM I2CͨÐų¬Ê±£¡£¡£¡ ÖØÐÂÆô¶¯I2C...n");

}

/**

  * º¯Êý¹¦ÄÜ: ͨ¹ýI2CдÈëÒ»¸öÖµµ½Ö¸¶¨¼Ä´æÆ÷ÄÚ

  * ÊäÈë²ÎÊý: Addr£ºI2CÉ豸µØÖ·

  *           Reg£ºÄ¿±ê¼Ä´æÆ÷

  *           Value£ºÖµ

  * ·µ »Ø Öµ: ÎÞ

  * ˵    Ã÷: ÎÞ

  */

void I2C_EEPROM_WriteData(uint16_t Addr, uint8_t Reg, uint8_t Value)

{

  HAL_StatusTypeDef status = HAL_OK;

  status = HAL_I2C_Mem_Write(&hi2c_eeprom, Addr, (uint16_t)Reg, I2C_MEMADD_SIZE_8BIT, &Value, 1, I2cxTimeout);

  /* ¼ì²âI2CͨÐÅ״̬ */

  if(status != HAL_OK)

  {

    /* µ÷ÓÃI2CͨÐÅ´íÎó´¦Àíº¯Êý */

    I2C_EEPROM_Error();

  }

}

/**

  * º¯Êý¹¦ÄÜ: ͨ¹ýI2CдÈëÒ»¶ÎÊý¾Ýµ½Ö¸¶¨¼Ä´æÆ÷ÄÚ