ESP8266 Community Forum

- Sat Nov 19, 2016 9:57 am #58384 I uploaded sketch into esp12f module. My wiring is like that
vcc--->3.3v
gnd--->gnd
en ---> 3.3v
gpio0--->gnd
gpio15--->gnd
rx---> usb-ttl tx
tx---> usb-ttl rx
gnd---> usb-ttl gnd

I can upload HelloServer example from ide succesfully. i am expecting to read ip address from serial monitor but it shows nothing. When i reset module serial monitor shows "ets Jan 8 2013,rst cause:2, boot mode:(1,6)
" in 74880 baudrate and stops. Disconnecting gpio0 and gpio15 also didnt work. What is the correct wiring after upload sketch?

- Sun Nov 20, 2016 12:24 pm #58431 I change gpio0 ground to 3.3v and i think now i am in normal mode. i am facing another issue. I am getting this error after every restart. Sometimes working correctly but after restart i am getting this error again.

ets Jan 8 2013,rst cause:2, boot mode:(3,6)

load 0x4010f000, len 1384, room 16
tail 8
chksum 0x2d
csum 0x2d
v09f0c112
~ld

Any help would be perfect.

- Sun Nov 20, 2016 12:53 pm #58432 I don't know if this will help but GPIO2 and CH_PD also needs to be controlled. Hi and hi on boot for GPIO2 .

Also, a poor power supply will cause all kinds of problems.

- Mon Nov 21, 2016 12:14 pm #58472 I am using esp12f version. In this version they changed the name of ch_pd to en. Its connected to 3.3v. I also connected gpio2 to 3.3v in both modes. This also didn't work. I am using ywrobot breadboard power supply so i dont think so my problem about power source. I have 3 of this module and all of them have this problem