MikroBus GPIO

Hello,

I am using a ZuBoard 1CG and am trying to use the MikroBus as GPIO pins so I can program a parallel LCD screen. I am getting strange signals coming out of the pins. Even just alternating GPIO signals creates strange results. There are large multi-second gaps for some lines, some have random switches and some keep running forever despite a stop condition. From the schematic, the only IC between the SoC and MikroBus connector is a 1.8 V to 3.3 V converter. Why would I have strange behavior?

Thank you

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0 javagoza 4 months ago

Have you checked your design and outputs using the integrated logic analyzer (ILA)? It's easy to add an ILA to your design, and you'll know for sure whether it's a digital design error or a board error.
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0 MATRIX7878 4 months ago in reply to javagoza

No, I have not. I did not know that was a thing to be honest with you. Xilinx SoC is my 1st SoC and first AMD product. I have only used GoWin and Quartus before and GoWins ILA is absolute garbage. I will most certainly do that. Thank you. I will post my findings.
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0 MATRIX7878 4 months ago in reply to javagoza

No, I have not. I did not know that was a thing to be honest with you. Xilinx SoC is my 1st SoC and first AMD product. I have only used GoWin and Quartus before and GoWins ILA is absolute garbage. I will most certainly do that. Thank you. I will post my findings.
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