read函式不会读取eMMC闪存?

FatDKai

在Firefly平台弄了个读/写档案测试的程序用ADB丢进/data/tmp目录执行
执行读取函式时，用分析仪抓取不到任何读eMMC闪存的CMD(17,18), 系统对eMMC闪存不会下读闪存的CMD?
为什么？求解~

1.    int patFile1 = open("./Pattern1.bin",O_CREAT|O_EXCL|O_RDWR,S_IRUSR|S_IWUSR|S_IXUSR);
   
2.     if(patFile1 < 0)
   
3.     {
   
4.        printf("open patFile1 error!\n");
   
5.   bError = 1;
   
6.        goto OUT;
   
7. 
   
8.     }
   
9. 
   
10.     // lseek(patFile1, 0 , SEEK_SET);
    
11. 
    
12.     int i;
    
13.     unsigned int   offset = 0;
    
14.     unsigned char* dataPatBuf;
    
15.     unsigned char* tmpDataBuf;
    
16.     unsigned int   fileSecs = MAX_BYTE_OF_FILE / SEC_SIZE;
    
17. 
    
18.     dataPatBuf = (unsigned char *)malloc(SEC_SIZE);
    
19.     printf("File Sectors = %d\n", fileSecs);
    
20.    
    
21.     srand(seed);
    
22. 
    
23.     for(i = 0; i < fileSecs; i++) {
    
24.         memset(dataPatBuf, (rand() % SEC_SIZE), SEC_SIZE);
    
25.         write(patFile1,dataPatBuf, SEC_SIZE);
    
26.     }
    
27. 
    
28.         //fsync(patFile1);
    
29.    
    
30.     lseek(patFile1, 0 , SEEK_SET);
    
31. 
    
32.     printf("Read Data Pattern...\n");
    
33.     for(i = 0; i < fileSecs; i++)
    
34.         read(patFile1,dataPatBuf,SEC_SIZE);
    
35.       
    
36.     free(dataPatBuf);
    
37. 
    
38.     close(patFile1);
    
39. 
    
40.     remove("Pattern1.bin");

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