I am application engineer, but I want to write device driver
that run in user process.
Character and Block device I want to write,
But I do not know where am I start.
chardev? very easy way , look /dev/null you lough,
but I do not know where it place.
and I do not know the magic number
that how can I decide dev_no,
more, the rule of /devices/.....
I order my new machine, the sandbox
please tell me how to write drivers.
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