[ECOS] [eCos] DMA driver for ARM7TDMI

Robert Cragie rcc@jennic.com
Mon Jul 28 14:18:00 GMT 2003


A DMA controller is not a device as such but allows transfer of data between
a device and another device, or a device and memory, without CPU
intervention. They are usually specific to a system and thus device drivers
for devices in such a system have additional support built into them to
allow the use of the DMA controller as well. Therefore, there is no DMA
controller for the ARM7TDMI as such, whereas a chip like, say, the Samsung
S3C4530, which is based on the ARM7TDMI, has a DMA controller which supports
the UART on chip as well.

Robert Cragie, Design Engineer
_______________________________________________________________
Jennic Ltd, Furnival Street, Sheffield, S1 4QT,  UK
http://www.jennic.com  Tel: +44 (0) 114 281 2655
_______________________________________________________________

> -----Original Message-----
> From: ecos-discuss-owner@sources.redhat.com
> [mailto:ecos-discuss-owner@sources.redhat.com]On Behalf Of Young Jay
> Sent: 28 July 2003 03:07
> To: ecos-discuss@sources.redhat.com
> Subject: [ECOS] [eCos] DMA driver for ARM7TDMI
>
>
> Hello, all:
>
> I wonder if there is any DMA device driver for ARM7TDMI or other
> ARM platform
> in eCos package available at present. If there is, please tell me
> something
> about this. Thanks a lot!
>
>
> regards,
> Young Jay
>
> --
> Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
> and search the list archive: http://sources.redhat.com/ml/ecos-discuss
>
>


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