DM9051 connection issue custom board

westlund
Posts: 1
Joined: Mon Aug 17, 2020 7:13 am

DM9051 connection issue custom board

Postby westlund » Mon Aug 17, 2020 7:22 am

Hi,

I made a custom board with DM9051 connected to ESP32, see attached schematic.

I can run the basic eth example code for esp idf.

But when I connect a cable between the board and my laptop and restart the board I get connected and then directly disconnected:

Serial monitor output:
*Ethernet Connected (Yellow light and green blinking on the port on the DM9051 side)
*Your Mac address: XXXXXXXX (2 seconds after connected)
*Ethernet disconnected (2-5 seconds after Mac address)

Anyone that can point me in the right direction to find the problem?
Attachments
ethernet_example_main.c
(4.94 KiB) Downloaded 329 times
DM9051.png
DM9051.png (15.5 KiB) Viewed 2336 times

markus.fischbacher
Posts: 1
Joined: Thu Jan 07, 2021 10:18 pm

Re: DM9051 connection issue custom board

Postby markus.fischbacher » Thu Jan 07, 2021 10:20 pm

Have you been able to fix that problem?
Thinking about also using the DM9051 instead of a LAN8742 to safe GPIOs.

Regards,
Markus

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