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StefanoMarsi's avatar
StefanoMarsi
Icon for Occasional Contributor rankOccasional Contributor
2 years ago

CYCLONE V - HPS and I2C Peripheral Pin

Hi Community I'm testing the I2C interface embedded in CycloneV - HPS. - However, if I export peripherals signals through the HPS I/O Set everything works pretty well. - But If I switch to FPG...
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tehjingy_Altera's avatar
tehjingy_Altera
Icon for Regular Contributor rankRegular Contributor
2 years ago

Hi Stefano


From the signal tap pictures that you send it seems like the problem could due to be originating between the HPS I2C Hard IP and HPS-to-FPGA interface.

This is not fixable by any software patch at the moment if the problem is coming from the HPS I2C Hard IP to the FPGA interface.


HPS I2C Hard IP >> HPS-to-FPGA interface >> FPGA fabric >> FPGA I/O >> Level Shifter >> I2C slave


Are you seeing this behavior on other boards as well?


Regards

Jingyang, Teh