ESP8266 Community Forum

- Thu Mar 31, 2016 10:17 am #44586 EN and CH_PD is the same pin, it only depends of the modules silkscreen.

- Mon Apr 04, 2016 12:01 pm #44812

EN and CH_PD is the same pin, it only depends of the modules silkscreen.

Thanks it seems like it is labeled differently on the aliexpress site.

So which pins do i actually have to pull up or down if i want to enable the chip to execute its program or to flash it with a new program?

According to this table on github:
https://github.com/esp8266/esp8266-wiki ... boot-modes

I have to set GPIO15 & GPIO0 on GND and GPIO02 High to download code from uart (which means programming it, for example with the arduino IDE, doesn't it?)
And just to execute the program i have to set GPIO015 on GND, GPIO0and GPIO02 High.

Is this correct for the ESP-12(F)?

- Mon Apr 04, 2016 12:13 pm #44813 Yes, CH_PD/EN pulled up as well as RES and GPIO2. GPIO15 pulled down.
GPIO0 pullup for normal execute mode while LOW for entering UpLoad/Programming mode during reset or power up.

- Mon Apr 04, 2016 1:33 pm #44822 Thanks for your quick reply!

So basically i don't even need a jumper for GPIO15 because it is LOW all the time?

Just another question: I will need a 10k resistor for every pin you just mentioned?