topic ECAT SOEM demo in RT1180-EVK board can't send out pkt in i.MX RT Crossover MCUs

ECAT SOEM demo in RT1180-EVK board can't send out pkt

shrek-tan — Thu, 16 Apr 2026 09:25:05 GMT

I‘m trying the “evkmimxrt1180_soem_gpio_pulse_freertos_cm7“ in RT1180-EVK board, but I found the demo can't send out the Ethercat packets.

In the demo code, I found It use the ENET4, but it can't find any Ethercat slaves.

then I check the port's registers about packets TX and RX （baseaddress : 0x60B00000u）, the tx registers has numbers(SITFRM0, SITOCT0), but there was non data when I capture packet on line.

Is there any other setting about EVK board when run the ecat soem demo ？

回复： ECAT SOEM demo in RT1180-EVK board can't send out pkt

shrek-tan — Fri, 17 Apr 2026 02:15:39 GMT

I found when the port is connected to the SLAVE, the link status of PHY alternates up and down.

回复： ECAT SOEM demo in RT1180-EVK board can't send out pkt

Pablo_Ramos — Mon, 20 Apr 2026 20:50:47 GMT

Hi @shrek-tan,

Could you help me with the following questions?

Did you make any changes to the example?

Did you make any modifications to the EVK?

Could you share how you are setting up the slave?

How many slaves are you setting up?

If you set up the slave before running the example, does the example still fail to find the slave?

Best Regards,
Pablo

回复： ECAT SOEM demo in RT1180-EVK board can't send out pkt

shrek-tan — Thu, 23 Apr 2026 08:44:48 GMT

Thanks for your reply,

I had fix this problem by change the autoneg setting from fause to true, then the link status can stably remain in the up state.

phy8201Config.autoNeg = true.

ESC phy chip is TI DP83848

But then ,I have met an other issue:

When the current EtherCAT master station's network port is directly connected to the slave station, the two cannot interact, and the slave station cannot go online. Later, when the network port of the master station environment in this demo was directly connected to the PC, it was found that the packets captured by the PC's network port were 19-byte packets with an ETH TYPE of 0x888E. However, if a HUB is first connected in series between the master station environment and the PC, the PC's network port can capture the correct EtherCAT packets (BWR & BRD) sent from the master station demo environment.

回复： ECAT SOEM demo in RT1180-EVK board can't send out pkt

Pablo_Ramos — Mon, 27 Apr 2026 16:42:28 GMT

Hi,

I'm glad to hear that you managed to resolve the issue and thank you for sharing your discoveries with the community.

If there is anything else we can help with, please do not hesitate to use our community.

Best Regards,
Pablo