[ECOS] Problem about writing IO device driver

Jonathan Larmour jlarmour@redhat.com
Tue Jan 8 07:58:00 GMT 2002

HuangQiang wrote:
> Thanks Jifl:
>    But one memory mapped IO device driver has many register need to be
> written to or read from? So each time I can call the cyg_io_read() or
> cyg_io_write()  to write or read different register in one memory mapped io
> device.

If it isn't a stream (copy a chunk of characters at a time) or a block
(copy a block or blocks of data at a time) device perhaps this interface
isn't the most appropriate. Either that or you maybe just want to use the
get_config/set_config calls instead if read/write don't make sense for

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