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CAlex's avatar
CAlex
Icon for Contributor rankContributor
3 years ago

DE10 STANDARD Linux issue

Hi, I wrote a code to test the latency of the SOC communication, the result are as followed: The blue line is the clock flag I made, it sends the 50us toggle flag to the pio of fpga, ...
aikeu's avatar
aikeu
Icon for Regular Contributor rankRegular Contributor
3 years ago

Hi CAlex,


Can share with me your project design?

Btw, I cant be sure this is related to the linuxsocfpga real time limitation or not, probably you can increase the time where your code detect an interrrupt triggerd to perform signal toggling. This will help to troubleshoot the running code because looks like for every 25us when an interrupt occured due to clock edge change and the linux application code must perform a signal toggling.

Another method is use a baremetal application to test your test code as a comparison.

I saw this document which talks about the latency issue:

https://www.rocketboards.org/foswiki/pub/Documentation/AlteraSoCLTSIRTKernel/ELC-Linux-RT.pdf


Thanks.

Regards,

Aik Eu