why does my ESP return "Link typ ERROR" and "link is not" ?

magnetron
Posts: 9
Joined: Tue Nov 10, 2015 10:13 pm

why does my ESP return "Link typ ERROR" and "link is not" ?

Postby magnetron » Tue Nov 10, 2015 10:19 pm

hello dear forum,

If I ping my ESP from PC it gives answer
however below commands return this errors

what am I doing wrong ?

thank you
====================================
AT+CWMODE=1
OK
AT+CIPMODE=0
OK
AT+CIPMUX=0
OK
AT+CWJAP="SSIDNAMEI","PASSWORD"

OK
AT+CIFSR

+CIFSR:STAIP,"192.168.1.6"
+CIFSR:STAMAC,"18:fe:34:f3:3e:81"

OK
AT+CIPSTART=0,"TCP","api.openweathermap.org",80

Link typ ERROR
AT+CIPSEND=0,72

link is not

ESP_Faye
Posts: 1646
Joined: Mon Oct 27, 2014 11:08 am

Re: why does my ESP return "Link typ ERROR" and "link is not" ?

Postby ESP_Faye » Wed Nov 11, 2015 8:17 pm

Hi,

Here is the latest AT firmware : http://bbs.espressif.com/viewtopic.php?f=46&t=1123.

AT documentations : http://bbs.espressif.com/viewtopic.php?f=51&t=1022

You can test AT commands according to documentation "4B-ESP8266__AT Command Examples".

Please set "AT+CIPMUX=1" first, then "AT+CIPSTART=0,"TCP","api.openweathermap.org",80", the first parameter "0" is the link ID, only in multiple connection mode we need a link ID, in single connection mode, there is only one connection which do not need a link ID.

Thanks for your interest in ESP8266 !

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