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标题:
read函式不会读取eMMC闪存?
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作者:
FatDKai
时间:
2015-4-28 10:59
标题:
read函式不会读取eMMC闪存?
本帖最后由 FatDKai 于 2015-4-28 11:56 编辑
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~
int patFile1 = open("./Pattern1.bin",O_CREAT|O_EXCL|O_RDWR,S_IRUSR|S_IWUSR|S_IXUSR);
if(patFile1 < 0)
{
printf("open patFile1 error!\n");
bError = 1;
goto OUT;
}
// lseek(patFile1, 0 , SEEK_SET);
int i;
unsigned int offset = 0;
unsigned char* dataPatBuf;
unsigned char* tmpDataBuf;
unsigned int fileSecs = MAX_BYTE_OF_FILE / SEC_SIZE;
dataPatBuf = (unsigned char *)malloc(SEC_SIZE);
printf("File Sectors = %d\n", fileSecs);
srand(seed);
for(i = 0; i < fileSecs; i++) {
memset(dataPatBuf, (rand() % SEC_SIZE), SEC_SIZE);
write(patFile1,dataPatBuf, SEC_SIZE);
}
//fsync(patFile1);
lseek(patFile1, 0 , SEEK_SET);
printf("Read Data Pattern...\n");
for(i = 0; i < fileSecs; i++)
read(patFile1,dataPatBuf,SEC_SIZE);
free(dataPatBuf);
close(patFile1);
remove("Pattern1.bin");
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