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

[Willem J. <wi...@wi...>]

Hello fellow developers,

I have a simple beginner question regarding the I/O ports. I got a 
simple Development Board of the 56pin version of the cy7c68013a.
(http://www.ebay.de/itm/EZ-USB-FX2LP-CY7C68013A-USB-Development-Core-Board-Module-Logic-Analyzer-EEPROM-/400470811401?pt=LH_DefaultDomain_77&hash=item5d3deba309)

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:

#include <fx2regs.h>

#include <lights.h>

#include <delay.h>


void main(void)

{

     // loop endlessly

     for(;;) {

        delay(3000);

        IOD=0x00;

        delay(3000);

        IOD=0xFF;

     }

}



However, my voltmeter does not show any changes once I loaded it with
"sudo fx2load -v 0x04b4 -p 0x0082 build/lights.bix"

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.

Any ideas?

   Regards,
     Willem

-- 
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Willem Jansen