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2258432's avatar
2258432
Icon for Occasional Contributor rankOccasional Contributor
2 years ago

How to use mSGDMA to continuously read data

I am working on a project where video data is generated on the FPGA side of a cycloneV board, transmitted to the second board through HPS Ethernet, and finally displayed though HDMI. After the data ...
Board Debug
Fpga Devkit
ZH_Intel's avatar
ZH_Intel
Icon for Frequent Contributor rankFrequent Contributor
2 years ago

Hi Lii Yuhang,

Thank you for reaching out.

Apologize for the delayed response as we encounter some technical difficulty.

Just to let you know that Intel has received your support request and currently we are confirming the details with our internal team.

I shall come back to you with findings.

Thank you for your patience.

Best Regards,

ZulsyafiqH_Intel


2258432's avatar
2258432
Icon for Occasional Contributor rankOccasional Contributor
2 years ago

Hello ZulsyafiqH,

Thank you for your reply, and I apologize for the delay in responding.

After testing, the problem is not with mSGDMA, but with the slow Ethernet transmission rate. Currently, the Ethernet transmission rate is approximately 24MB/s (192Mbps), while transmitting 1920x1080@8fps video requires a rate of about 75.5MB/s (604Mbps). I reduced the video resolution to match the transmission rate, and now the data is continuous.

The Ethernet communication rate between the two boards is set to 1Gbps, but the actual rate is only about 192Mbps. Next, I will learn how to improve the Ethernet transmission rate.

Thanks again for your assistance.

Best regards.