Search found 5 matches

by spencer
Thu May 17, 2018 6:51 pm
Forum: General Discussion
Topic: More LAN8720 IP issues
Replies: 9
Views: 6838

Re: More LAN8720 IP issues

Initially I intended to switch power to the module with a transistor instead of toggling the oscillator enable pin so that I didn't have to modify every LAN board, but even with no power supplied to the VCC, io0 would still get pulled down. To remove the variable of booting correctly while troublesh...
by spencer
Thu May 17, 2018 6:14 am
Forum: General Discussion
Topic: More LAN8720 IP issues
Replies: 9
Views: 6838

Re: More LAN8720 IP issues

Doit has external pullup on gpio0 Wow, removing the external pullup on my board and the doit dev board fixed them both. thank you! I'm confused because espressif's Core Board v2 is working and its schematic shows a 5k pullup on io0 too. Frank Sautter's post ( https://sautter.com/blog/ethernet-on-es...
by spencer
Thu May 17, 2018 1:25 am
Forum: General Discussion
Topic: More LAN8720 IP issues
Replies: 9
Views: 6838

Re: More LAN8720 IP issues

WiFive wrote:Your image links are bad or private.

Doit has external pullup on gpio0
Oh thanks, should be fixed.

It should have an external pullup on gpio0 so that it doesn't get stuck in the bootloader on startup.
by spencer
Wed May 16, 2018 8:28 pm
Forum: General Discussion
Topic: More LAN8720 IP issues
Replies: 9
Views: 6838

Re: More LAN8720 IP issues

Here's a bit more info. The working setup is using an ESP32 Core Board V2: https://www.adafruit.com/product/3269 Non-working setups are using this dev board from http://www.doit.am: http://www.smartarduino.com/esp32-development-board-wifi-bluetooth-ultra-low-power_p95103.html and my board with more ...
by spencer
Tue May 15, 2018 8:37 pm
Forum: General Discussion
Topic: More LAN8720 IP issues
Replies: 9
Views: 6838

More LAN8720 IP issues

This has come up before and I've searched for everything I can find about it but still haven't found a working solution. I've been having issues similarly to what others have described trying to use a LAN8720 breakout with an ESP32 WROOM...the PHY seems to be working, it detects the ethernet cable b...

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