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Altera_Forum
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11 years ago

Routing HPS I2C thru FPGA Not Working

Hi I followed Altera's guide AN706 (link below) to route HPS' I2C0 port through the FPGA on the Cyclone V Arrow SoCKit. I included the ALT_IOBUFF buffer as instructed by AN706 guide. But it's n...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

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I have played around with the sda hold time but no success... it looks like the sda signal gets out of the hps but not in again.

(I can see the sda output and the ack from the slave but the controller says there was no ack)

https://www.alteraforum.com/forum/attachment.php?attachmentid=12224

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Hello nd89,

how do you measure the signals?

Thanks