2024-08-27 01:30 AM
Hi everyone,
I am trying to run an ethernet phy (LAN8742Ai) using STM32H745. I can say that there is no major difference from the Nucleo ref. phy design. However, when i ping, i cannot get a response and the processor gets very hot. The phy and MCU blocks design as follows.
Thank you.
2024-08-27 07:09 AM - edited 2024-08-27 07:09 AM
Hello @KTVT and welcome to the community,
@KTVT wrote:
However, when i ping, i cannot get a response and the processor gets very hot.
When you say the MCU gets very hot, is it restricted to that specific application? what if you toggle a GPIO? do you have the same behavior? As could be something linked to the power settings/clock settings or power issue in the HW.
2024-08-27 08:01 AM
Hello @KTVT ,
After a first examination of the published design here are some findings:
the GPIO configuration is not the same in fact you use:
PG 12 ------->ETH_TXD1
and the ref design of nucleo uses the following pins: