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TMS570LS1227: Hercules ti Evk board we are using phy link up not working on power on recycle

Sandeep C

Prodigy 175 points

Part Number: TMS570LS1227
Other Parts Discussed in Thread: HALCOGEN,

Tool/software:

Hi,

I’ve integrated the Mongoose Ethernet stack, and it's working fine. However, I’m encountering an issue with the Dp83640LinkStatusGet() API used to check the link status.

Working:

When I dump the code, the link is established, and ping works. It also functions correctly if I remove and reconnect the cable multiple times without a power cycle.

Not Working:

After a power cycle, the link does not come up. The Dp83640LinkStatusGet() function is called, but the link remains down.

IDE Details:

Code Composer Studio: Version 12.7.1.00001
HALCoGen: Version 04.07.01

Boards details:

EVK: Hercules texas intruments

Controller: TMS570LS1227

link: https://www.digikey.in/en/products/detail/texas-instruments/TMDS570LS12HDK/5067066?cur=INR&lang=en

Note: I generated the code as outlined in the HALCoGen IDE under: Help -> Help Topics -> Examples -> example_EMAC_Loopback_TxRx.c. I have verified the configurations are same.

Any suggestions on how to resolve the issue?

jagadish gundavarapu

Regards,

Sandeep C

FILES:

over 1 year ago

0 jagadish gundavarapu over 1 year ago

TI__Guru 72996 points

Hi Sandeep,

I never saw an issue like this before, i saw the issues where Link Status not working completely but here you are saying it is not working after power cycle.

What is mean by power cycling? Are you pressing POR button or are you unplugging power cable and plugging again?

Can you try increasing retries count?

--
Thanks & regards,
Jagadish.

0 Sandeep C over 1 year ago in reply to jagadish gundavarapu

Prodigy 175 points

Sure, I set the retry value to 0xfffff and tried several times, but it still didn’t work. I’ll increase the number of retries and update you soon.

When we talk about "power on recycle," it means unplugging the power cable and then plugging it back in.

Note: Before initializing, I am printing some text that will work, but the link-up is failing.

Did you gone through the project which i shared ? if not can you check .hcg using halcogen.

Regards,

Sandeep C

0 Sandeep C over 1 year ago in reply to jagadish gundavarapu

Prodigy 175 points

LINK_TEST_1.zip

Please look in to my configuration once.

Regards,

Sandeep C

0 jagadish gundavarapu over 1 year ago in reply to Sandeep C

TI__Guru 72996 points

Hi Sandeep,

I don't see any issues with your configurations, they are looking fine.

And there won't be much code execution difference between power on reset and reset through debug, and in power on reset the below highlighted code might executed additionally.

So, this should not cause the issue.

Sandeep C said:
After a power cycle, the link does not come up. The Dp83640LinkStatusGet() function is called, but the link remains down.

Is this issue repeating for every power cycle or seldomly occurring?

Is it possible to test with different network as well?

--
Thanks & regards,
Jagadish.

0 Sandeep C over 1 year ago in reply to jagadish gundavarapu

Prodigy 175 points

hanks for your reply.

1) The issue occurs seldomly, not every time.

2) I will test it with different networks and update you soon.

Regards,
Sandeep C

0 jagadish gundavarapu over 1 year ago in reply to Sandeep C

TI__Guru 72996 points

Hi Sandeep,

Sandeep C said:
1) The issue occurs seldomly, not every time.

If it is seldomly occurring, may be i am suspecting it can be a network. Can you please test with other networks if possible.

Sandeep C said:
2) I will test it with different networks and update you soon.

Sure sandeep.

--
Thanks & regards,
Jagadish.

+1 Sandeep C over 1 year ago in reply to jagadish gundavarapu

Prodigy 175 points

Thanks for the reply. I tested with a different network, and the MDIO initialization was failing. I implemented the logic below, and since then the linkup has been happening and everything is working fine.

Is it okay to reinitialize the module if it fails?

#define MAXEMAC_INIT_TRIES 5

do
{
if(EMACHWInit(ifp->mac) != 0x01)
{
try++;
status = false;
}
else
{
status = true;
}
} while (try < MAXEMAC_INIT_TRIES && status == false);

Regards,

Sandeep C

0 jagadish gundavarapu over 1 year ago in reply to Sandeep C

TI__Guru 72996 points

Hi Sandeep,

Sandeep C said:
Is it okay to reinitialize the module if it fails?

That is good thing to do, i think reinitializing module after failing is the ideal way we can do.

--
Thanks & regards,
Jagadish.

0 Sandeep C over 1 year ago in reply to jagadish gundavarapu

Prodigy 175 points

Hi,

Thanks for the reply,

if reinitialization is fine then You can close this thread.

Regards,

Sandeep C