ESP8266 Community Forum

- Mon Jun 19, 2017 8:47 am #67343 Hi

I am trying to work with ESP8266 S01 but it does not work.

Code: Select allAT   

ERROR
AT+GMR   

ERROR
AT+CWMODE=1   

ERROR
AT+CWMODE=1   

ERROR
AT+CIPMUX=1   

ERROR
AT+CIFSR   

ERROR


Device is giving error messages, and I do not know that why it happened.
Can you help me?

My connections are as follows :

ESP VCC - 3.3V
ESP CHPD - 3.3V
ESP GND - GND
ESP RX - TX
ESP TX - RX

Thank you!

- Mon Jun 19, 2017 3:55 pm #67369 Maybe the device doesn't have the AT firmware loaded.

- Mon Jun 19, 2017 4:17 pm #67370

Maybe the device doesn't have the AT firmware loaded.

In that case TS wouldn't have a prompt and "ERROR"-messages like that.

@espnew: open a serial connection at 74880 baud and reset your ESP.
Have a look at the console and copy-paste the entire contents here on the forum (it should start with ets Jan 8 2013,rst cause:?, boot mode:(?,?), where ? are numbers).

Assumption is the mother of all f*ckups. At least: that's what I'm assuming.

- Tue Jun 20, 2017 4:41 am #67387

Maybe the device doesn't have the AT firmware loaded.

In that case TS wouldn't have a prompt and "ERROR"-messages like that.

@espnew: open a serial connection at 74880 baud and reset your ESP.
Have a look at the console and copy-paste the entire contents here on the forum (it should start with ets Jan 8 2013,rst cause:?, boot mode:(?,?), where ? are numbers).

I have tried your commands but it still doesn't work. I received these codes

Code: Select alla%H?a%H?a%H?a%H?a%H?a%H?a%H?a%H?a%H?a%H?G?Z?QP@XdY?g
?Q+kSPP?
?WJ5?V?DDVi`\   dX`XPP5}`Y?@Xu{dZ?Zs?G?Z?QP@XdY?g
?Q+kSRP?
?WJ5?V?DDVi`\   dX`XPP5}`Y?@Xu{dZ?ZsXDQUgOX1?Duc
`\?m
`XPP5}|\PP?
`PDZsY?Dw?{`\?`P
sY?Wu!?Duc
`\?m
lY?@V?!`V?Wu!?@GcZDQUgOXg?Dvi
`\??D?i?W?!Ke6^dV?D@I+Pk
!@P@\pXDu?P+Pti
@PBPhP+GDP?HBgI?khP?P?Qk
!?!?}?Y*#?t?X


And then I converted my connection of baudrate to 115200 and reset

Code: Select allrlready
AT   

ERROR
AT   

ERROR
AT+GMR   

ERROR


Thank You !


Edit : This ESP worked a few days ago, I have tried new ESP S01 but the problem is continuing.