ESP8266 Community Forum

- Fri Apr 24, 2015 4:13 am #15472 Interestingly, I have one ESP-201, that shows the same behavior. I can flash it, but it never starts the code.

- Fri May 08, 2015 10:02 am #16906 I'm probably being naive here, but could the problem be the way that the WROOM supports OTA firmware updates? Is the boot firmware different to the more common ESP-xx boards?

- Tue Jun 16, 2015 8:53 am #20593 WROOM-02 from espressif loads custom firmware .. have tested the same using firmware built with Arduino IDE

- Thu Jun 18, 2015 7:14 am #20810 Hy there,

Just got my ESP-13 set up and it seems that the pinout is the same as the "WROOM-02".
I set it up exactly as the ESP-12E or ESP12.
Just wanted to share this with you and perhaps someone can clear what this means.
In Serial Monitor I get :
AT+RST


OK

ets Jan 8 2013,rst cause:4, boot mode:(3,7)

wdt reset
load 0x40100000, len 1320, room 16
tail 8
chksum 0xb8
load 0x3ffe8000, len 776, room 0
tail 8
chksum 0xd9
load 0x3ffe8308, len 412, room 0
tail 12
chksum 0xb9
csum 0xb9

2nd boot version : 1.3(b3)
SPI Speed : 40MHz
SPI Mode : QIO
SPI Flash Size : 8Mbit
jump to run user1

rŽÃ[ÿ
Ai-Thinker Technology Co. Ltd.

ready

AT+GMR

AT version:0.23.0.0(Apr 24 2015 21:11:01)
SDK version:1.0.1
Ai-Thinker Technology Co. Ltd.
Apr 27 2015 13:55:14

OK

This is without writing any firmware on the chip.