> I read the fifo as
> long long my_data;
> read ("/dev/rtf7", my_data, sizeof(my_data));
This should work. However it would be better style to define a type in a
header-file included by both, your driver and the user spce program.
> Is there a printf function to print this type?
printf("Time: %6lld,%09lld \n",my_data);
> Can I do arithmetic operations with them?
yes.
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