[SOLVED] accessing device driver from C application

baraq · 06-14-2011, 10:43 AM

Hi,

I wrote device driver to USB device, I can see it is alive and sending the data that I set it to send from the shell

Code:

cat /dev/myDev

How can I read from the device using C code?
I've tried to open it as a file and read it's content to buffer but noting returns..

Code:

char bufferin[500];
FILE* myDev = fopen("/dev/myDev", "r+");

size = fread(bufferin, 500, 500, myDev);

Thanks

baraq · 06-14-2011, 03:01 PM

anyone?

baraq · 06-15-2011, 02:47 AM

OK
Found a solution

Code:

int myDevFd = open("/dev/myDev", O_RDWR);

size = read(myDevFd, bufferin, 500);