Re: [Fx2lib-devel] Beginner question regarding I/O ports

[Daniel O'C. <doc...@gs...>]

On 25/05/2013, at 15:45, Willem Jansen <wi...@wi...> wrote:
> To get started I want to see the I/O Pins of the chip to change from 3.3V to 0V and back. I therefore changed to lights-example as follows:
> 
<snip>
> 
> To be even more precise, I seems that all pins of the IOD-port are somewhat disconnected, as there is no voltage difference neither to and GND nor the 3.3V Pins.

I believe they are set to input so they will be floating.
You need to do the following to set turn the output enables on..
OED = 0xff;

Note that IFCFG1 and WORDWIDE can affect port D (they will switch it to its alternative function FD[15:8])

Hope that helps :)

BTW I found it quite helpful to configure UART 0 and write out debug messages to it (depends if you need both UARTs for your application though).

--
Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
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