ESP8266 Community Forum

- Tue Feb 10, 2015 7:52 pm #9429 Hi,

I have hooked up my esp-01 to my computer and can communicate with it but there is a problem: The serial connection is lost when I send AT+RST or AT+CWLAP (not necessarily the only ones). It looks like this:

Code: Select allAT+GMR
0020000903
compiled @ Dec 15 2014 19:43:31
AITHINKER-20141206

OK
AT+RST

OK
"ʃþ:ÇóƝ
hÄ#ž"byBBH€C

After this there is no reaction . If I close and reopen the com, it works again. It looks the same for AT+CWLAP:

Code: Select allAT+GMR
0020000903
compiled @ Dec 15 2014 19:43:31
AITHINKER-20141206

OK
AT+CWLAP
//list of APs here

OK
ZËAý1j§£Ç3ωRˆ$#}‚Æ’ÂHä®–Ÿ

I can use commands like AT+GMR or AT+CWJAP with no problems but it always fails after AT+RST and AT+CWLAP.

The thing is, that it works fine with my esp-07 unit so I was wondering what could cause these problems. Could it be a firmware problem or is it my serial connection?

thanks!

edit: Update: Switched to an external power supply which solved the problem of the connection loss after reset. Now the above looks like

Code: Select all//do stuff here
ZËAý1j§£Ç3ωRˆ$#}‚Æ’ÂHä®–Ÿready

and it's responding to AT commands. However, it still resets after several commands like AT+CWLAP , AT+CIPSEND and AT+CIUPDATE (after +CIUPDATE:4)

Last edited by arcadeprecinct on Thu Feb 12, 2015 5:32 am, edited 2 times in total.

- Tue Feb 10, 2015 10:43 pm #9434 Strange problem..

How about the Espressif Official AT http://bbs.espressif.com/viewtopic.php?f=5&t=154

I tried, can't replicate your problem ...

Or you can test it with another module..

- Wed Feb 11, 2015 10:07 am #9473

Strange problem..

How about the Espressif Official AT http://bbs.espressif.com/viewtopic.php?f=5&t=154

I tried, can't replicate your problem ...

Or you can test it with another module..

thanks for the reply, I will look into that when I get the chance.