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OK - there isn't anything wrong with your code. However, there is a problem if you're trying to do what I think you are - I'm assuming you're trying to connect to the DE2-115 board via the HSMC connector. Right?
The ADC connections from the THDB-ADA board aren't connected up to the FPGA on that development board. Perhaps that sounds odd - but they aren't. The pins from the top 'third' of the HSMC connector - where the ADC signals are broken out from the ADA board - aren't taken to the FPGA (with the exception of a few intended for I2C, clock and JTAG related functions - not relevant to the ADA).
I note that reference is made to use of the DE2-115 board in the manual for the ADA board but no mention of this limitation. I think that's a little poor.
I attach the relevant pages of the schematic for each board for you to consider yourself.
However, the ADC signals are also taken to J7, one of the GPIO connectors on the ADA. You may be able to connect it to the DE2-115 board via that. You'll probably need to remove the DE2-115 board's protective perspex cover to do so.
Cheers,
Alex
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Hi Alex,
Could you be more specific on which ADC signals aren't taken to the FPGA ? We'd like to mention that in the user manual, if there's any.
When I look at how the HSMC pins from ADA-HSMC are named and oriented, I have to admit it is easy to get confused and lost for them being completely upside down. I guess that's the reason why we change the number order afterwards, so the pins on both ends can be mapped directly.
David from Terasic
Honored Contributor
