- Sat Oct 24, 2015 9:26 am
#32193
In few places on the Web I encountered opinion, that GPIO2 pin should be pulled up to VCC, because otherwise it could mess up booting process. Most tutorials doesn't mention it at all. Can I leave this pin unconnected?
- Sat Oct 24, 2015 9:27 am
#32194
I am talking about ESP-12 module.
- Sat Oct 24, 2015 9:40 am
#32197
To boot properly, both GPIO2 and GPIO0 needs to be HIGH.
https://github.com/esp8266/esp8266-wiki ... ot-Process
Although some people said that ESP has internal pullups, but they are known to be too weak, so it is strongly recommended to have some external ones on all required pins : CH_PD, RES, GPIO2 and GPIO0 to HIGH and GPIO15 to LOW.
https://github.com/esp8266/esp8266-wiki ... ot-Process
Although some people said that ESP has internal pullups, but they are known to be too weak, so it is strongly recommended to have some external ones on all required pins : CH_PD, RES, GPIO2 and GPIO0 to HIGH and GPIO15 to LOW.
