Lpc2000

Have you set the pin function to be an ouptut?
Krys

--- In lpc2000@yahoogroups.com, "relentless_6995" <bobd@c...> wrote:
> LPC2138 with IAR environment
> 
> ---
> volatile unsigned long ul0;
> 
>         // interrupts are disabled at this point to be sure
>         // they are not cause of problem 
> 
> 	IOCLR0 = 0x80000000;	// gpio_RFMODEM_RESET_P0_31_o;
> 	ul0 = IOPIN0;	
> 	
> 	IOSET0 = 0x80000000;	// gpio_RFMODEM_RESET_P0_31_o;
> 	ul0 = IOPIN0;	
> 	
> 
> ... function goes on
> ---
> 
> THE PROBLEM IS THE HIGH ORDER BIT IN ul0 IS NEVER SET AFTER READING 
> IOPIN0 - THE HIGH ORDER BIT DOES NOT REFLECT THE ACTUAL P0.31 
OUTPUT 
> LEVEL THAT I SEE ON THE SCOPE - it always remains low while the 
> p0.31 output changes accordingly
> 
> Tried on two sets of hardware ... it doesn't get any simpler ... 
> maybe I've been staring too long. Is there a problem in the part?
> Anybody?
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