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Re: LPC2138: Strange SSP Behavior

2005-01-11 by johnnorgaard2003

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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