TMS570LC4357: EMAC receive is not working in unicast mode.

Hi Subash,

I have forwarded your question to one of my colleagues, and he will take a look at the issue later. Thanks

Hello All,

I checked in EAMC PHY loopback mode, the packets are being transmitted successfully, however received packets are filtered. I have attached snapshot for your reference. I'm am to receive data if I enable broadcast mode. I want to use unicast mode. Could you please help me in resolving the issue.

Hi Subash,

I am suspecting one thing could be the root cause for the problem,

Can you please make sure that you enabled unicast mode by calling the  "EMACRxUnicastSet" for the channel you are using?
You can find this function in the file HL_emac.c file. If we call this function by passing channel number and emac_base then it will enable the unicast for the corresponding channel in "Receive Unicast Enable Set Register (RXUNICASTSET)".

If you verify the below example project of hercules
..\hercules_examples\hercules_examples\Application\LwIP\v00.04.00\LAUNCHXL2-TMS570LC43x
there you can see that, this function is calling inside the "hdkif_hw_init" function for channel 0.

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Regards,
Jagadish.

Hi Jagadish,

The as you mentioned the Unicast is enabled for channel-0, however it is doing filtering on the receive side.  If the destination address is  0xFF 0xFF 0xFF 0xFF 0xFF 0xFF then, the receive is working in broadcast mode. we need to configure the EMAC in unicast mode. Could you please share the example  project for TMS570lc4357 EMAC module if any?  

Hi Subash Sundaresan,

Please refer lwIP example in the below link.
6. Examples — Hercules Safety MCUs Documentation

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Regards,
Jagadish.

Hi Jagadish,

 I unable to download project from Git repository. Could you please answer for my query about unicast? 

Hi Jagadish,

I found the issue. It was address match filter option ruined the communication. It is working fine now. Thank you.