MCU-PLUS-SDK-AM243X: MCU-PLUS-SDK-AM243X: EtherNet/IP Adapter Demos: Link status when auto negotiation fails

Ryohei Yamada

Prodigy 240 points

Part Number: MCU-PLUS-SDK-AM243X

The previous thread got locked, so I'll ask here.

I built the demo below and checked its operation.

"ethernetip_adapter_generic_device_mii_demo_am243x-lp_r5fss0-0_freertos_ti-arm-clang"

We checked with new version 09.01.00.03 of INDUSTRIAL-COMMUNICATIONS-SDK-AM243X.

However, the following auto-negotiation failure symptoms continue to occur.

When the other party to connect to is forced 100Mbps half-duplex, the link is up, but the values of the following objects are incorrect.

"Ethernet Link Object - Instance 1 - Attribute 2: Interface Flags"

As shown below, Ethernet Link Object - Instance 1 - Attribute 2: Interface Flags's Bit1 was set to 1, indicating that the link was up in full duplex mode.

Link status when auto negotiation fails_ind_comms_sdk_am243x_09_01_00_03.zip

Could you confirm this phenomenon again?

over 1 year ago

0 Nilabh Anand over 1 year ago

TI__Mastermind 34882 points

Hi Ryohei,

We are working on it with Kunbus team, It is taking longer than expected. thanks for your patience.

0 Hideaki Matsumoto over 1 year ago in reply to Nilabh Anand

TI__Expert 8770 points

Hi Nilabh,

Thank you for supporting this thread as well. Since the customer has posted some inquiries regarding EtherNet/IP on e2e. Please confinue to support these threads.

Thanks and regards,
Hideaki

0 Nilabh Anand over 1 year ago in reply to Hideaki Matsumoto

TI__Mastermind 34882 points

Hi Ryohei and Hideki,

we pinned it down to an issue in our custom PHY library that bypasses the TI ETHPHY interface. When the ETHPHY_command fails the default values 100MB and Full Duplex are used. Due to that wrong values are entered into Attribute 2 of the Ethernet Link object. The EtherNet/IP team will investigate options for a corrected solution.

0 Nilabh Anand over 1 year ago in reply to Nilabh Anand

TI__Mastermind 34882 points

Hi Ryohei,

Could you please reperform the test by enabling half duplex in syscfg. Let me know your observations.

0 Ryohei Yamada over 1 year ago in reply to Nilabh Anand

Prodigy 240 points

Hi Nilabh,

Thank you for your reply.

If I enabled "ICSS-EMAC"->"Half Duplex Enable", the problem was improved.

Changes to "example.syscfg"

Fullscreen

1
ethernetip1.icss_emac[0].halfDuplexEnable        = true;
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

ethernetip1.icss_emac[0].halfDuplexEnable        = true;

With the above changes, half duplex can now be obtained when the connection partner is in forced link settings and the DUT is in auto negotiation.

I have attached the improved results.

Also, there was no problem with the operation when both devices were using auto negotiation.

Could you please enable "Half Duplex Enable" by default in the next release?

I will close this thread once confirmation is received.

Link status when auto negotiation fails_ind_comms_sdk_am243x_09_01_00_03_Half_Duplex_Enable.zip

0 Nilabh Anand over 1 year ago in reply to Ryohei Yamada

TI__Mastermind 34882 points

Hi Ryohei,

We will be making it a default option in next sdk release.

+1 Nilabh Anand over 1 year ago in reply to Nilabh Anand

TI__Mastermind 34882 points

Please find this ticket for reference: PINDSW-7507(For internal view only)

This will be fixed in 9.2 SDK release.

Arm-based microcontrollers

Arm-based microcontrollers forum

MCU-PLUS-SDK-AM243X: MCU-PLUS-SDK-AM243X: EtherNet/IP Adapter Demos: Link status when auto negotiation fails