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Manikanta123's avatar
Manikanta123
Icon for New Contributor rankNew Contributor
3 years ago

Unable to read data from h2f_master port from HPS linux

Hai Team, I'm using Agilex board and trying to interface Axi4Lite IP to HPS via h2f_master port and wrote small application in linux to read from h2f_master port but we are unable to read data ...
tehjingy_Altera's avatar
tehjingy_Altera
Icon for Regular Contributor rankRegular Contributor
3 years ago

Hi Manikanta

Did you happened to change your qsys design?

I see that the offset address for the IP have changed from 0xd0000 to 0x70000.

Could you try reading the address with offset 0x70000 using the md tool?

If it still cant be read, it seems like you will need to create a custom IP to convert the AXI4 signals to match with AXI4lite.

Unfortunately intel do not have an IP to do the conversion.

However you could try adding an AXI Bridge in between the HPS and the custom IP to see if we could work around this.

With the AXI Bridge there are some additional parameters that you could toggle on/off.

In the master connection, we could turn on the sideband signals to match the HPS and in the slave connection we could do the same to match the custom IP.

You could try toggling between the AXI4 and AXI4lite in the drop down menu as a reference to what signals are required for AXI4lite.

Regards

Jingyang, Teh