Olimex Support Forum

Microcontrollers => ESP32 => Topic started by: CNeoF on June 18, 2021, 04:03:47 pm

Title: PHY NRST GPIO number
Post by: CNeoF on June 18, 2021, 04:03:47 pm
Hi,

I Just bought the ESP32-PoE_ISO and I am trying to get it to work with "micro-ROS" an esp-idf components. In order to use Ethernet I have to configure the reset pin of the PHY, however the NRST isn't mapped on any GPIO. I tried to use the PHY_PWR mapped on GPIO 12 instead with no success.


Does anyone have an idea on how to proceed? Would there be a way to set a GPIO for the NRST?
Title: Re: PHY NRST GPIO number
Post by: LubOlimex on June 21, 2021, 08:22:44 am
NRSET is pulled up high through 10k resistor R25.
Title: Re: PHY NRST GPIO number
Post by: CNeoF on June 30, 2021, 12:19:51 pm
I tried welding a cable from a GPIO to the node before the resistor R25.
Still the reset won't work when the GPIO is pulled low.
I'm not sure why...
(https://user-images.githubusercontent.com/83817457/120295361-5da05080-c2c7-11eb-8915-4d3ee63c9250.png)
Title: Re: PHY NRST GPIO number
Post by: LubOlimex on July 01, 2021, 08:55:42 am
Did you try the ros support and forums, check here:

http://wiki.ros.org/Support