IMPORTANT: DO NOT USE
AT+IPR=9600! (see update)
I have an ESP8266 12E module that communicates at 115,200 bauds. Since I use it with an Arduino Nano with SoftwareSerial things get messy. So I found that I should reduce the baud rate of the ESP module.
I found this link on how to do it.
I am wondering
Is this a permanent change or do you need to do this every time after the module is powered?
Can I achieve the same by sending the command from the Arduino over SoftSerial? Well, I guess not since I tried and I always get an error on
I read somewhere that in newer firmware versions of the ESP8266, the baud rate defaults to 9,600. Can anyone confirm this and if so, is it better to flash this newer firmware?
The module's vendor:
Ai-Thinker Technology Co.,Ltd.
I think the current version of the firmware is 0.3.0. If I send
AT+GMR I get:
sending AT+GMR response: ?AT¥TJÕ¨H(Q�²•ÉÍ¥½¹é‚r¢‚r‚r‚BÕ��Â’‚ŠªŠ¢Ò¢ªÒªÂJm SDK versioo:0.3.0 Ai�½½ ‚Šj
Again some garbage because of the baud rate which is too high.
Other info on the module:
sending AT+RST response: ?AT+RST OK WRT "%M <99CT ets Jan 8 2013,rst catse:2, boot lode:(3,7) load 0x40100000ntail 4 chksum 0x89 ld tail 4 chm3 tail 8 r 0 aM ón't use rtc mem dat` sl��oÌÿ Ai-Thinker Technology Co.,Ltd.
(*) I used an FTDI232 module to send
AT+IPR=9600 to my ESP8266-12E module and I bricked it!
DO NOT USE
AT+IPR=9600 ON AN ESP8266(-12E).
I did not manage to recover it so far! I tried re-flashing it but I get Invalid head exceptions.
On a new module I sent the
AT+CIOBAUD=9600 command and it worked. Permanently!
My module specs:
AT+GMR AT version:0.40.0.0(Aug 8 2015 14:45:58) SDK version:1.3.0 Ai-Thinker Technology Co.,Ltd. Build:22.214.171.124 Sep 11 2015 11:48:04 OK