SCC character recognition/DMA
Dan Malek
dan at mvista.com
Wed Aug 1 05:17:44 EST 2001
"Pergola, Michael" wrote:
> The 823e that comes with the Embedded Planet Dev Box
> has 3 SCCs but one is dedicated to USB while another is
> used for Ethernet.
Not exactly. The USB controller is a USB controller. It is
mapped into the address space of one SCC, and may use some of that
peripheral hardware, but it is not configurable as a SCC.
Since you have the 823e, yes SCC3 can be used.
> .... I guess my real question is, rather then
> re-invent the code, is there an implementation of the
> character recognition out there in GPL land?
I believe all the "character recognition" does is either map characters
or terminate buffer operations. If the device is still used as a uart,
just modify the driver to initialize the characters you want (as it
stores defaults right now). You can be a little more fancy and add an
ioctl() if you want. If you want a custom driver that isn't a uart,
then you have to write a new driver.
-- Dan
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