Lpc2000

Hi Bruce,

	Yes you do have to tie it high. 

Regards,
Charles

-----Original Message-----
From: Bill Knight [mailto:BillK@...] 
Sent: Thursday, January 13, 2005 6:40 AM
To: lpc2000@yahoogroups.com
Subject: Re: [lpc2000] Re: SPI usage



On Thu, 13 Jan 2005 13:22:31 +1100, Bruce Paterson wrote:


Bruce Paterson wrote:

> 
> Hi,
> 
> I've written an interrupt based SPI driver to fit into the newlib
> structure (ioctl, read, write).

A hardware question (it seems to be my day for questions!).
If you have SPI port enabled, used as a Master, do you have to tie the SSEL0
pin high, or can you program that pin as a GPIO (and somehow the 
SPI core gets a permanent high supplied to it internally) ?

Seems a waste of an I/O pin to have to tie it high where most SPI 
applications would be SPI master
------------------------------------------------------------------
Bruce
  I believe the answer is yes, you must tie the SSEL0 pin high even when
operating in Master mode and yes, it seems a waste.

-Bill Knight
http://www.theARMPatch.com




 
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