ESP8266 Community Forum

- Tue Apr 05, 2016 10:26 am #44875 As I said earlier :

Beware that any ESP need not only CH_PD/EN to be pulled up, but also GPIO2/GPIO0 and RES. And GPIO15 needs to be pulled down.

- Tue Apr 05, 2016 11:37 am #44882 but if i pull gpio0 up wont it get into the non programming mode? Id like to get there where i can actually program it and change the firmware and all of that good stuff. thanks

- Tue Apr 05, 2016 11:54 am #44888 GPIO0 is LOW for programming mode and HIGH for execution mode.
So pullup is the default execution mode, and placing a push button switch to GND will temporarily bring it in programming mode during reset or power recycle.

- Tue Apr 05, 2016 11:55 am #44889 so only gpio0 has to be grounded. The rest stays the same regardless of the mode? EN and GPIO2 go to high and gpio15 to low even for programming mode. thanks