MTK 输出Trace信息到文件中

 

#include "FileMgrGProt.h"
void mmi_write_buffer_to_file(char *buff, unsigned int buffSize, char *fileName)
{
    S32 ret = 0;
    U32 rwLen = 0;
    S8 ascii_path[32];
    S8 ucs2_path[64];
    FS_HANDLE fileHandle;
    sprintf(ascii_path, "%c:\\%s", MMI_CARD_DRV, fileName);
    mmi_asc_to_ucs2(ucs2_path, ascii_path);
   
    ret = FS_GetAttributes((const WCHAR *)ucs2_path);
    if(ret < FS_NO_ERROR)
    {
        fileHandle = FS_Open((const WCHAR *)ucs2_path, FS_CREATE_ALWAYS|FS_READ_WRITE);
    }
    else
    {
        fileHandle = FS_Open((const WCHAR *)ucs2_path, FS_READ_WRITE);
    }
    kal_prompt_trace(MOD_TST, "mmi_write_buffer_to_file, fileHandle=%d", fileHandle);
    ASSERT(fileHandle>=FS_NO_ERROR);
 
    ret = FS_Seek(fileHandle, 0, FS_FILE_END);
    ret = FS_Write(fileHandle, buff, buffSize, &rwLen);
    FS_Close(fileHandle);
 
    ASSERT(rwLen==buffSize);
    ASSERT(ret >= FS_NO_ERROR);
 
}

 在使用的时候先定义一个buffer

例如：

char filebuff[64] = {0}; //大小可以根据需要来定
memset(filebuff, 0, 64);
sprintf(filebuff, "error code\r\n");
mmi_write_buffer_to_file(filebuff, strlen(filebuff), "error.txt");

 

 

这样是输出error code 到文件当中

 

memset(filebuff, 0, 64);
sprintf(filebuff, "fN=%s\r\n", fileName);
mmi_write_buffer_to_file(filebuff, strlen(filebuff), "error.txt");

 
这样是输出fileName 到文件当中

memset(filebuff, 0, 64);
sprintf(filebuff, "XXXXX.c, line %d\r\n", __LINE__);
mmi_write_buffer_to_file(filebuff, strlen(filebuff), "error.txt");

 
这样是输出当前文件的行号到文件中

 

这样很方便使用，又不用担心catcher引起问题.