Lpc2000

--- In lpc2000@yahoogroups.com, "tphatrapornnant" <tp35@l...> wrote:
>
> Hi all,
> 
> I'm using Ashling EVBA7 Philips LPC2100 Evaluation board 
(LPC2106). I 
> got a problem about using GPIO P0.16-P0.31 as general 
input/output. I 
> set some of these pins (P0.16-P0.31) as I did on P0.0-P0.15 pins 
which 
> all were used and worked correctly. For P0.16-P0.31, it didn't 
work. I 
> set pins to be output as the following:
> 
> PINSEL0 &= ~P15;
> IODIR |= P15;
> IOSET = P15; 
> 
> PINSEL1 &= ~P26;
> IODIR |= P26;
> IOSET = P26;   
> 
> Both pins worked correctly on Keil simulator (I toggled both pins 
> with '1' and '0' in while loop) but only P0.15 could toggle on the 
> real H/W.
> 
> Did I forget somethings? Does anyone have a clue?
> 
> Thanks,
> 
> Teera.
>

I'm not really a fan of PINSELx &= ~PIN# - I can't see the bit 
pattern and I doubt that it works.  I much prefer to do a #define 
<bit pattern name> <hex pattern> and then use that to set the bits.

However, I think the real problem is that there is no ~P26 in 
PINSEL1, it should PROBABLY be the same pattern as ~P15.  Each pin 
select register only controls 16 pins.

Richard