fpga4fun.com

Hi
I recently purchased the Xylo-LM board. So far it is working well. I have tested many bit files including pgms to send data from the PC, process the data and read it out using the I/O pins and it works fine. I use USB cable to download and this provides the power supply to the board. Now, instead of the desktop PC, I am using a pocket PC and trying to do the same. I am able to download bit files without any issues. The LED blink pgm works fine too. But when I try to send data from the pocket PC to the FPGA and read it using the I/O pins, it gives me no values. Also, I tried simple pgms to just enable some pins(say I/O pins 48,49 etc). It doesn't work . The same pgm with no changes works when I use my desktop. What could the reasons be? Since the LED blink pgm is working, I think the pins are getting driven high. Why aren't the other I/O pins behaving in the same way. Is there anything I am doing wrong here??
thanks

Make sure you follow the checklist from chapter 8.2 in the doc (in particular, for unused Pins”, select “As inputs, tri-stated”).

hi
Thanks for that. I did make that change and still it didn't work. And finally it occurred to me that I had forgotten to gnd some of the gnd pins on teh Xilinx FPGA and after that it started working!!
Thanks again