基于ram的日志

//目前使用0X80200000 到 0X803FFFFF 这一区域大小0x200000 (2097152u)
#define SDRAM_SAVELOG_ADDRESS 0x80200000

#define SDRAM_SAVELOG_SIZE (1000000u)

#define LOG_SIZE (32u) //理论上最大57723条

定义一些接口和实现方法：

extern void SaveDataLogInit(void);
extern char* GetSaveDataLogAddress(void);
extern char* GetSaveDataLogHandle(void);
unsigned int GetSaveDataLength(void);

extern void SaveDataLog(const char *string);

extern void SaveDataLogPrintf(char* operation, \
                               char* file_name, \
                               int operation_result,\
                               int option);
extern void SaveDataLogPrintfGetF(char* drv, \
                               int free, \
                               int operation_result);

//定义一个句柄

char *SaveDataLogHandle;

//初始化内存空间和句柄

void SaveDataLogInit(void)
{
SaveDataLogHandle = (char *)SDRAM_SAVELOG_ADDRESS;
memset(SaveDataLogHandle, 0, SDRAM_SAVELOG_SIZE);
}

//获取内存空间起始地址

char* GetSaveDataLogAddress(void)
{
return (char *)SDRAM_SAVELOG_ADDRESS;
}

//获取当前句柄即当前保存log的起始地址

char* GetSaveDataLogHandle(void)
{
return (char *)SaveDataLogHandle;
}

//获取当前已经保存的数据长度

unsigned int GetSaveDataLength(void)
{
return (((unsigned int)SaveDataLogHandle)-SDRAM_SAVELOG_ADDRESS);

}

//保存当前日志

void SaveDataLog(const char *string)
{
   char SaveDataLog[LOG_SIZE]={0};

   memset(SaveDataLog,0,LOG_SIZE);

   memcpy(SaveDataLogHandle, string, LOG_SIZE);

   SaveDataLogHandle+=LOG_SIZE;
}

一些专用的保存

void SaveDataLogPrintfGetF(char* drv, int free, int operation_result)
{
   if(SaveDataLogHandle == NULL || (((unsigned int)SaveDataLogHandle) > 0x803FFFFF))
   {
       return;
   }

   // 填入时间信息
   char time_log[10]={0};
   memset(time_log,0,10);
   sprintf(time_log,"%02d%02d%02d",HOU, \
                                   MIN, \
SEC);

   snprintf(SaveDataLogHandle,LOG_SIZE,"%sf_getfree%s %04d %02d",time_log,drv,free,operation_result);
   memcpy(SaveDataLogHandle+LOG_SIZE-2,"\r\n",2);//强制以换行符结束
   SaveDataLogHandle+=LOG_SIZE;
}

void SaveDataLogPrintf(char* operation, char* file_name, int operation_result, int option)
{
   if(SaveDataLogHandle == NULL || (((unsigned int)SaveDataLogHandle) > 0x803FFFFF))
   {
       return;
   }

   // 填入时间信息
   char time_log[10]={0};
   memset(time_log,0,10);
   sprintf(time_log,"%02d%02d%02d",PARAMETER_BPAP_HOU, \
                                   PARAMETER_BPAP_MIN, \
                                   PARAMETER_BPAP_SEC);

   snprintf(SaveDataLogHandle,LOG_SIZE,"%s%s%s %02d %04d",time_log,operation,&file_name[3],operation_result,option);
   memcpy(SaveDataLogHandle+LOG_SIZE-2,"\r\n",2);//强制以换行符结束
   SaveDataLogHandle+=LOG_SIZE;
}

//一些格式化输出标志
#define F_OPEN        "f_open"
#define F_WRITE    "f_write"
#define F_LSEEK    "f_lseek"
#define F_CLOSE    "f_close"
#define F_READ        "f_read"

#define FILE_TYPE_S "s"
#define FILE_TYPE_M "m"
#define FILE_TYPE_D "d"
#define FILE_TYPE_SPACE " "

基于ram的日志

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