2020年04月04日 | STM32系统保存参数到eeprom的实现方法

1 ini.c

#include

#include "stm32f10x.h"

#include "string.h"

#include "EEPROMDrv.h"

#include "ini.h"

//define the memory map in EEPROM

#define IniStartAddress 0

#define IniMaxSize 200

/* EEPROM

0________200________________________________________________________________64K

|         |     |

|INI   | OTHERS     |

|_________|_________________________________________________________________|

*/

//---------------Declare variable---------------

//Eeprom is initialized

const uint8_t Var1_Len = 2;

uint8_t Var1_EepromIsInitialized[Var1_Len] = {0};

const uint8_t Var1_Default[Var1_Len] = {0x55, 0x11};

//start

const uint8_t Var2_Len = 1;

uint8_t Var2_Contrast[Var2_Len] = {0};

const uint8_t Var2_Default[Var2_Len] = {50};

const uint8_t Var3_Len = 1;

uint8_t Var3_KeyTone[Var3_Len] = {0};

const uint8_t Var3_Default[Var3_Len] = {0};

const uint8_t Var4_Len = 1;

uint8_t Var4_Language[Var4_Len] = {0};

const uint8_t Var4_Default[Var4_Len] = {0};

const uint8_t Var5_Len = 9;

uint8_t Var5_TerminalPassword[Var5_Len] = {0};

const uint8_t Var5_Default[Var5_Len] = {"123456"};

const uint8_t Var6_Len = 28;

uint8_t Var6_ServerAddress[Var6_Len] = {0};

const uint8_t Var6_Default[Var6_Len] = {"255.255.255.255,10245"};

const uint8_t Var7_Len = 15;

uint8_t Var7_ApnName[Var7_Len] = {0};

const uint8_t Var7_Default[Var7_Len] = {"cmnet"};

const uint8_t Var8_Len = 15;

uint8_t Var8_ApnId[Var8_Len] = {0};

const uint8_t Var8_Default[Var8_Len] = {0};

const uint8_t Var9_Len = 15;

uint8_t Var9_ApnPassword[Var9_Len] = {0};

const uint8_t Var9_Default[Var9_Len] = {0};

const uint8_t Var10_Len = 15;

uint8_t Var10_AdvancedMenuPassword[Var10_Len] = {0};

const uint8_t Var10_Default[Var10_Len] = {"000000"};

//...add your ini variable here, total length of Vars, do not more than MAXINIBUFFSIZE(200)

INI machine_ini[machine_ini_max] =

{

//variable buff, ,The initial value of the buff

//VarEepromIsInitialized;

{Var1_EepromIsInitialized, Var1_Default, Var1_Len},

//start

//VarContrast;

{Var2_Contrast, Var2_Default, Var2_Len},

//VarKeyTone;

{Var3_KeyTone, Var3_Default, Var3_Len},

//VarLanguage;

{Var4_Language, Var4_Default, Var4_Len},

//VarTerminalPassword;

{Var5_TerminalPassword, Var5_Default, Var5_Len},

//VarServerAddress;

{Var6_ServerAddress, Var6_Default, Var6_Len},

//VarApnName;

{Var7_ApnName, Var7_Default, Var7_Len},

//VarApnId;

{Var8_ApnId, Var8_Default, Var8_Len},

//VarApnPassword;

{Var9_ApnPassword, Var9_Default, Var9_Len},

//VarAdvancedMenuPassword;

{Var10_AdvancedMenuPassword, Var10_Default, Var10_Len},

//...add yours as follow

};

uint8_t IniTempBuf[IniMaxSize] = {0};

void PrintBuf(const char *title, uint8_t buf[], uint16_t size)

{

uint16_t i=0;

printf("%s : ", title);

for(i=0; i {

printf("%02x ", buf[i]);

}

printf("rn");

}

void PrintBuf2(const char *title, const char *content, uint16_t i, uint8_t buf[], uint16_t size)

{

printf("%s : ", title);

printf(" %s %d, ", content, i);

for(i=0; i {

printf("%02x ", buf[i]);

}

printf("rn");

}

void Ini_ReadFromEeprom (void)

{

uint16_t i=0, j=0, k=0, m=0;

memset(IniTempBuf, 0, sizeof(IniTempBuf));

EepromReadBytes(IniStartAddress, IniTempBuf, IniMaxSize);

//PrintBuf(__func__, IniTempBuf, 200);

for(i=0; i {

m = machine_ini[i].VarLen;

//printf("%s : i = %d, machine_ini[i].VarLen = %drn", __func__, i, m);

for(j=0; j {

machine_ini[i].Var[j] = IniTempBuf[k++];

}

//PrintBuf2(__func__, "machine_ini[i]=", i, machine_ini[i].Var, machine_ini[i].VarLen);

}

}

void Ini_WriteToEerpom (void)

{

uint16_t i=0, j=0, k=0, m=0;

uint8_t ret = 0;

memset(IniTempBuf, 0, sizeof(IniTempBuf));

for(i=0; i {

m = machine_ini[i].VarLen;

//printf("%s : i = %d, machine_ini[i].VarLen = %drn", __func__, i, m);

for(j=0; j {

IniTempBuf[k++] = machine_ini[i].Var[j];

}

//PrintBuf2(__func__, "machine_ini[i]=", i, machine_ini[i].Var, machine_ini[i].VarLen);

}

//PrintBuf(__func__, IniTempBuf, 200);

ret = EepromWriteBytes(IniStartAddress, IniTempBuf, IniMaxSize);

if(ret != 0)

printf("%s : EepromWriteBytes return is %drn", __func__, ret);

}

void Ini_RestoreToFactoryDefault (void)

{

uint16_t i=0, j=0;

for(i=0; i {

memset(machine_ini[i].Var, 0, machine_ini[i].VarLen);

for(j=0; j {

machine_ini[i].Var[j] = machine_ini[i].VarDefault[j];

}

PrintBuf2(__func__, "machine_ini[i]=", i, machine_ini[i].Var, machine_ini[i].VarLen);

}

Ini_WriteToEerpom();

}

void Ini_Initialize (void)

{

Ini_ReadFromEeprom();

//may be ini in eeprom have been change,

//or it is a new chip

if(strncmp((const char *)machine_ini[0].Var, (const char *)machine_ini[0].VarDefault, 2) != 0)

{

Ini_RestoreToFactoryDefault();

Ini_ReadFromEeprom();

}

}

int8_t Ini_CmpWithDefault(void)

{

uint16_t i=0, j=0;

uint8_t ret = 0;

for(i=0; i {

for(j=0; j {

if(machine_ini[i].Var[j] != machine_ini[i].VarDefault[j])

{

printf("%s i=%d, j=%drn", __func__, i, j);

PrintBuf2(__func__, "machine_ini[i]=", i, machine_ini[i].Var, machine_ini[i].VarLen);

ret = 1;//failed

}

}

}

return ret;

}

ini.h

#ifndef __INI_H__

#define __INI_H__

void Ini_Initialize (void);

void Ini_WriteToEerpom (void);

void Ini_ReadFromEeprom (void);

void Ini_RestoreToFactoryDefault (void);

int8_t Ini_CmpWithDefault(void);

typedef struct 

{

//pointer

uint8_t *Var;

//if you are use the function "Restroe factory set", VarDefault -> Var

const uint8_t *VarDefault;

uint8_t VarLen;

}INI;

#define machine_ini_max 10

extern INI machine_ini[machine_ini_max];

//Item list

#define IniItem_EepromIsInitialized 0

#define IniItem_Contrast 1

#define IniItem_KeyTone 2

#define IniItem_Language 3

#define IniItem_TerminalPassword 4

#define IniItem_ServerAddress 5

#define IniItem_ApnName 6

#define IniItem_ApnId 7

#define IniItem_ApnPassword 8

#define IniItem_AdvancedMenuPassword 9

//IniItem_Language

#define lang_English 0

#define lang_Chinese 1

//user use as follow

#define gEepromIsInitialized machine_ini[IniItem_EepromIsInitialized]

#define gContrast machine_ini[IniItem_Contrast]

#define gKeyTone machine_ini[IniItem_KeyTone]

#define gLanguage machine_ini[IniItem_Language]

#define gTerminalPassword machine_ini[IniItem_TerminalPassword]

#define gServerAddress machine_ini[IniItem_ServerAddress]

#define gApnName machine_ini[IniItem_ApnName]

#define gApnId machine_ini[IniItem_ApnId]

#define gApnPassword machine_ini[IniItem_ApnPassword]

#define gAdvancedMenuPassword machine_ini[IniItem_AdvancedMenuPassword]

#endif

//底层需要提供对eeprom的操作函数

//EepromReadBytes(Addr, Buff, Size)

//EepromWriteBytes(Addr, Buff, Size)

int main(void)

{

//初始化ini

//实际操作是将参数从eeprom读到全局数组里面

//判断开始2个字节是否和default值相同，

//如果不相同，则可能是一片新的EEPROM芯片，

//调用 Ini_RestoreToFactoryDefault();

// Ini_ReadFromEeprom();

//恢复default值并写到eeprom,然后重新读出到全局数组

Ini_Initialize();

//修改参数的方法类似如下操作

//set to the new contrast

gContrast.Var[0] = 30;

//save to eeprom

Ini_WriteToEerpom();//实际操作是将全局数组里面的内容写到eeprom

}