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Message

RE: [lpc2000] Re: LPC2138: Strange SSP Behavior

2005-01-11 by Charles R. Grenz

Hi,

	Do you have the slave select pin pull high?


Charles



-----Original Message-----
From: tah2k [mailto:tah2k@...] 
Sent: Tuesday, January 11, 2005 9:59 AM
To: lpc2000@yahoogroups.com
Subject: [lpc2000] Re: LPC2138: Strange SSP Behavior




Yes, but it doesn't seem to matter.

--- In lpc2000@yahoogroups.com, "johnnorgaard2003" <john_2005@c...> 
wrote:
> 
> Hi
> 
> Have you selected the SSP function in PINSEL0 or PINSEL1 ?
> 
> 
> best regards
> 
> John
> 
> --- In lpc2000@yahoogroups.com, "tah2k" <tah2k@y...> wrote:
> > 
> > I'm writing the driver for the LPC2138 SSP block and I am
> > encountering some strange behavior:
> > 
> > First of all, the user manual states SSPCR1, SSPCPSR, and
SSPIMSC 
> > are all reset to 0x0 upon powerup.
> > 
> > I am finding the following values in these registers after reset: 
> > SSPCR1 (0xE005C004): 0xF8 SSPCPSR (0xE005C010): 0x04
> > SSPIMSC (0xE005C014): 0x04
> > 
> > The processor ignores any writes of any data value to these
> > locations.
> > 
> > Any ideas?
> > 
> > -Tim





 
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