Lpc2000

--- In lpc2000@yahoogroups.com, "philips_apps" <philips_apps@y...> 
wrote:

Thanks for clarifying the situation.

Regards
KD
 
> 
> Hello KD,
> 
> in case you are using a LPC2131/2132/2138 as the master device on 
> your SPI bus, you can configure the pin hosting SSEL function to 
> perform a GPIO or some other non-SPI related function. Your SPI 
> peripheral will run just fine.
> 
> However, for all other currently available LPC2000 devices the SSEL 
> pin must be configured as the SPI SSEL pin and tied via a pull-up to 
> 3.3V. As you can see, older LPC2000 microcontrollers are always 
> using SPI's SSEL once the SPI is enabled: masters to detect presence 
> of another master on the bus and slaves as the select line. If you 
> choose non-LPC213x device and configure its SPI module to be the 
> master but select a function different from the SSEL on the 
> corresponding pin, the SPI module will switch to the slave mode.
> 
> Regards,
> 
> philips_apps
> 
> --- In lpc2000@yahoogroups.com, "karldalen" <karldalen@y...> wrote:
> > 
> > Simple question!
> > 
> > Does the SSEL pin function overide the GPio function when
> > the SPI interface are enabled? I need to use the SPI in 3
> > pin master mode and overide the SSEL function by using
> > that port pin as a GP I/O?
> > 
> > Since configuration are pin based and therefore it
> > should work even then that the manual says nothing
> > specific about the SSEL function! No?
> > 
> > Reg
> > K