AM6548: PDK NIMU initialization - missing port names

Andrej Fedorov

Part Number: AM6548

Hi,

the NIMU implementation for the am65xx (v7) is obviously designed for 9 different ports - judging by functions NimuEmacInitPX (X from 0 to 8).
However, the NimuEmacInit() only contains names for ports 0-5 and fails to properly initialize port eth6 (which is our case) or higher. Because of that that, the standard MAC on our IDK board cannot be used for communication as higher layers (e.g. the SlNet or HTTP server) fail too.

Our temporary solution was to add the missing names into the names array (which helped). But I was wondering, whether there is some other way to correctly "workaround" this issue.

The version of the PDK we use is 1.0.7

Thanks

over 4 years ago

0 Andrej Fedorov over 4 years ago

Prodigy 60 points

Apparently nobody has encountered similar issue.

According to this thread https://e2e.ti.com/support/processors/f/791/t/935569 the Ethernet drivers are currently undergoing some redesign. I assume this issue might get addressed/fixed along the way. Could anyone from TI confirm it?

Thanks

0 Dave Bell over 4 years ago in reply to Andrej Fedorov

TI__Genius 14680 points

Andrej,

The AM65 can support 7 MAC ports -- two per ICSSG and one for the CPSW2G. Can you elaborate on your starting point and what you're trying to do? Is it that you are using the example(s) at \pdk_am65xx_1_0_7\packages\ti\transport\ndk\nimu\example\am65xx? Are you using port 6 for CPSW2G?

Best regards,

Dave

0 Andrej Fedorov over 4 years ago in reply to Dave Bell

Prodigy 60 points

Dave,
I am working on a prototype project on IDK/AM6548 with a network connectivity.
For now I attempt to use the CPSW with example code from \ti\transport\ndk\nimu\example\src\main_am65xx.c combined with the SiNet layer and the HTTP server from the NS package.

This example code eventually gets to a point when the NIMU is initialized and the function mentioned in the original post is called, but since the name of the 7th port in its local port name definition array is missing the initialization fails (also there's a buffer over-read).

char names[NIMU_CPSW_PORT_NUM][NIMU_PORT_NAME_LEN]={"eth0","eth1","eth2","eth3","eth4","eth5"};

The only way to make it work for me was to add the missing name and to rebuild the library.
So my intention, when I started this thread (apart from reporting this issue), was to make sure that I'm not missing anything and that my approach to using the CPSW is correct. Is it so?

Thanks

0 Dave Bell over 4 years ago in reply to Andrej Fedorov

TI__Genius 14680 points

Andrej,

Thanks for flagging this and highlighting the update.

To confirm I understand your current status, is your application working now with the addition of the 7th entry?

Best regards,

Dave

0 Andrej Fedorov over 4 years ago in reply to Dave Bell

Prodigy 60 points

Yes, it works now.

0 Dave Bell over 4 years ago in reply to Andrej Fedorov

TI__Genius 14680 points

Thanks for confirming.

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AM6548: PDK NIMU initialization - missing port names