Lpc2000

Hi Aminder

Ok I now have pull-up on SSEL pin. But how do I control it. Setting it
low when selecting the device ?
IOSET and IOCLR have no effect when any pin in configured as secondary
function(user manual p.82)

best regards


John

--- In lpc2000@yahoogroups.com, Aminder Athwal <aminderathwal@y...> wrote:
> 
> Hi John
> Make sure you pull P0.7 (SSEL pin) to High (3.3V) I had alot of
problems with this but It should resolve your problem.
>  
> Aminder
> 
> johnnorgaard2003 <john_2005@c...> wrote:
> 
> Hi 
> I am using lpc2106 and SPI.
> I can't get it to work, it should be simple but..
> 
> Here is what I do
> //----------------------------------------------
> PINSEL0 |= 0x5500;      // enable SPI pins
> SPCR     = 0x20;      // set master mode
> SPCCR    = 128;            // SCK =pclk/128
> 
> 
> SPDR = c;            // start transfer
> //-----------------------------------------------
> 
> but there is no activity on the  SCLK.
> 
> 1) Should be SSEL be pull-up ? (it is always low)
> How do activate/deactivate SSEL ?
> (in the user manual on page 127 is say SSEL is not directly driven by
> the master.It could be driven by a simple general purpose I/O under
> software control.)
> 2) Should I still select SSEL as alternate function SSEL or general
> purpose I/O ?
> 
> 
> Please if any one have used SPI and SSEL, please comment
> 
> best regards
> 
> John
> 
> 
> 
> 
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> Regards,
> 
> 
> Aminder Singh Athwal
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