Re: [ECOS] Ethernet and Serial drivers for Linux target?

[Jonathan Larmour <jlarmour at cygnus dot co dot uk>]

Grant Edwards wrote:
> 
> I told management that it should be possible to write serial port and
> Ethernet device drivers for the Linux eCos target, thus allowing
> people to do eCos application development on Linux boxes.  Of course
> the performance and timing won't be the same, but for basic application
> functionality it should be good enough for many things.
> 
> Has anybody done this?  I assume that all you have to do is to map
> cyg_io_read() and cyg_io_write() into read() and write() calls, and
> map cyg_io_get_config() and cyg_io_set_config() into appropriate
> ioctl() calls?

One other issue that no-one else has mentioned is that you can't make calls
to the system read() and write(), ioctl() etc. directly. To do that would
involve linking with glibc, and that would simply not work.

Instead all the current interfacing is done using kernel system calls
directly. Of course, this doesn't prevent you having a separate native linux
program acting as a server for the client requests, communicating using
fd's. And that's where Bart's solution would come in, in the thread in
October he mentioned.

Jifl
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