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Re: [lpc2000] Re: SPI Code hangs

2006-03-09 by Robert Adsett

Quoting Danish Ali <danish@...>:

> A quick sanity check:
> You say you have no hardware attached.
> You know you need a pull-up resistor on the SSEL pin,
> which MUST be routed to the SPI block in PINSEL0.
>
> The user manual tells you that you can't use the SSEL pin for GPIO
> on devices earlier than the 2148 - even if you only ever use SSP as a master!
> Without this, if the pin (or when wired as GPIO, the internal floating net)
> goes low, the SPI will automatically be a slave.
>
> imho this should be in an official "gotcha" document even if it is 
> not an errata item.

See http://www.open-research.org.uk/ARMuC/LPC2100Tips.html

Robert

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