MCU-PLUS-SDK-AM243X: Get the Status for the ETHPHY-LEDs by Driver

Hi Felix,

Can you please let me know if you are using Enet LLD or icss-emac driver?

Also can you please let us know PHY part number?

Regards,

Prasad

sorry for the missing information:
it's the dp83826e and we are using the icss-emac driver.

Hi Felix,

By looking at the data sheet of dp83826e https://www.ti.com/lit/ds/symlink/dp83826e.pdf?ts=1658854327015&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FDP83826E

I do see there are some registers to get the info that you need. In the section 9.5.31 MLEDCR_Register Register

v

Please let me know if this works for you.

Regards

Nilabh A.

Hey Nilabh,

thanks for the reply.

As I understand this is the configuration of the LED0. So the source of information the LED shall show. But I need the information about the mentioned source states.

Like: is rx/tx activity happening?

so I guess the Phy does just not support this one, but that's understandable.

Is there another way maybe via the PRUs?

Best regards

Felix

Hi Felix,

I discussed with PHY team, it is as you said, we do not have this support in PHY. I am discussing with internal team if we can use PRU here.

Regards

Nilabh

Felix Heil said:

But we are not using any connected LEDs to the PHY but we do control the LEDs from the application side. This means TX/RX- and LINK-LEDs.

Also Felix if you can please explain the intent behind controlling it from application. Also why are we not using phy leds for the same.

Thanks! Also Prasad was informed about that.
The idea at our side was to reduce costs since we have already an led-architecture which is not based on GPIO driven LEDs. We have a lot of LEDs and so we needed a different approach.

Thanks Felix, 

I will get back once we get more info from internal team.

Hi Felix,

The way for using GPIO driven led here would be to put led driving logic inside

Rx (https://software-dl.ti.com/mcu-plus-sdk/esd/AM243X/latest/exports/docs/api_guide_am243x/group__NETWORKING__ICSS__EMAC__MODULE.html#ga6a5967f060e14a11d20eea9cd8b66e5f)

and

Tx(https://software-dl.ti.com/mcu-plus-sdk/esd/AM243X/latest/exports/docs/api_guide_am243x/group__NETWORKING__ICSS__EMAC__MODULE.html#ga49a2a061f6f24145004053b005f6e1a5)

api 's of icss emac driver. It can be done by doing led toggle based on packet count.

Please let me know if you need any further info.

Regards

Nilabh A.

Hey Nilabh,

so this means we need to change the source-code inside the sdk?

So I tried but it seems I get Tx-Events for both Ethernet-Phys (ICSS_EMAC_PORT_1 and ICSS_EMAC_PORT_2) even if only one Phy is active.

That part:

    else
    {
        ret = ICSS_EMAC_txPacketEnqueue(icssEmacHandle,
                                        txArg->srcAddress,
                                        portNumber,
                                        queuePriority,
                                        lengthOfPacket);
        triggerRxTx(portNumber);
    }

is called in this case two times for both ports each every time an answer is sent. Is this on purpose?

Can I somehow correctly check if there is really an sent Tx-packet or do I also need to get the Link-Status and "AND" both to be sure?

best regards

Felix

Hi Felix,

Nilabh is on leave this week. He will come back on this thread next week. Sorry for inconvenience.

Regards,

Prasad