Illegal seek error with seek() and os.lseek()

[Andreas Perstinger]

On 14.05.2013 21:00, krishna2prasad at gmail.com wrote:
>   # first, open the file as a plain binary
>   try:
>       self.file = open(/dev/relpcfpga, "r+b", buffering=0)

Aren't you missing the quotes for "/dev/relpcfpga"?

> The method seek() complains "OSError: [Errno 29] Illegal seek"
> The device relpcfpga is a char device.

Are you sure that your device is seekable?
Try

f = open("/dev/relpcfpga", "r+b", buffering=0)
print(f.seekable())

Bye, Andreas