How to attach SW1 to input port?

Question

I'm having trouble connecting the SW1 push button on the microzed 7020 to an input port. Part of the issue is that the XDC master constraints file does not include the assignment for the button. All it has is JX1, JX2, and Bank 13. On the schematic it shows that SW1 connects to Bank 501 via pin B9. However that constraint assignment doesn't work in Vivado 2016.1. I get the error "ERROR: [DRC 23-20] Rule violation (UCIO-1) Unconstrained Logical Port - 1 out of 135 logical ports have no user assigned specific location constraint (LOC)..." So is there any way to use this button as a reset in a block diagram.

Thanks

jafoste4 · Accepted Answer

Hello Baclarke,

The reason we do not include any constraints in the master constrain file for the SW1 push button is because it is connected to the PS directly vie MIO, no the PL. It is tied to MIO51. You will need to enable your GPIO MIO withing you MIO Confugrations if you wish to use it.

Here is a post that goes into detail on this subject http://zedboard.org/content/mio-pushbuttons-gpio

--Josh