--- Quote Start ---
Hi All,
I am a new user to Altera's Quartus II and to FPGA's in general.
I have posted already on a similar matter, but had no replies so thought I'd try again.
I am using the FTDI Morph-IC-II board, and am struggling to get the communications between the Altera Cyclone-II FPGA and the FTDI FT2232 chip to work properly.
I configured the FTDI chip for communication using the synchronous 245 FIFO mode to interface with the FPGA.
I also have made a simple quartus II design which only has one Warning and as that is
"warning: feature logiclock is only available with a valid subscription license. you can purchase a software subscription to gain full access to this feature." I should be fine to ignore it.
The thing that is confusing me most, is that when I do not have anything on the FPGA, the RXF# and TXE# signals which go between the FTDI chip and the FPGA work correctly. However when I try to impliment my design onto the FPGA these signals are held high.
I think I must have a problem with how I have set up the pins in my quartus II design, but I have been through many of the tutorials and web/e seminars and feel I am doing as I have been shown in the examples. However I am thoroughly stuck and slowly getting annoyed at the Altera software, as no matter what I do, even with no errors, nothing seems to be workin.
Any help, advice or guidance is very welcome and extremely appreciated!
--- Quote End ---
Hi,
yes, your are right you can ignore the mentioned Warning. It is a feature for grouping parts of your design together.
What do you mean with " I do not have anything on the FPGA", FPGA not programmed ?
Did you run a simulation of your design ? Can you be sure it is functional ?
BTW: Have a look to your Quartus default setting of un-used pins.
Assignments -> Settings -> Device -> Device & Pin options -> unused pins
Should be set to "Tri-stated input with weak-pull up"
Kind regards
GPK
Honored Contributor
