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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
11 years ago

QII 14.0 consist of the final timing model which is recommended for user to close timing while export HPS peripherals to FPGA region.

Anyway, the timing for i2c is quite slow thus I suppose it should not give much impact to your design.

A few thing I can think of here is:

1. Did you update your preloader after changing HPS setting in QSYS?

2. How did you connect your pin out to ALT_IOBUFF?

3. You stated you able to send out I2C commands, did you mean HPS send out or the slave did?

-Luis-