Question regarding simple input to test FPGA

[noli]

Hi,

   So I was trying to do a simple test on my FPGA to make sure that the connections worked ok..   And I basically want to send in a TTL trigger on DIO0, have it flash an led on the front panel, and connect a button to an output DIO1 to set the state to High or low.  The button works for adjusting the output, but the Flashing LED doesn't work for teh input TTL.  The TTL is created by an external frequency generator that I can easily adjust, so its sure that it wasn't blinking too fast.  The led just stays in the High position.  Also, when I try to pass the signal straight through to the output, the output stays at a constant high.

Does anyone have any ideas what I'm doing wrong?

Thanks,

Sidney 

Software:  Labview 8.5, FPGA Moduel, Real Time Module

Hardware:  PXI-7833R FPGA, PXI-1031  Chassis, SCB68 Connnector Block

 

 

[KateB]

Hi noli,

If I'm not wrong, you can configure DIO0:3 to be either DI or DO, but all must be the same.

In this case, I believe they're DO.

Therefore, you must configure DIO4:7 to DI, and use them for input.

Regards, Kate

[noli]

Ah!..  Ok, that would be a surprise..  I'll give it a shot and see what happens

Thanks