esp8266 AT commands

Projects Networking, Protocols, and Devices
1

Hi when i send the following AT Commands :
–>AT+CIPSTART=”TCP”,”innovations.thinkfinitylabs.com”,80\r\n
–>AT+CIPSEND=90\r\n
–>GET /test/comm/sens.php?key=f46fa009d3c6902ea2a805567c7ed4&val1=01&val2=02&val3=03&val4=04\r\n

Then after sending GET command it shows like this:

AT+CIPSTART=”TCP”,”innovations.thinkfinitylabs.com”,80

CONNECT

OK
AT+CIPSEND=90

OK

busy s…

Recv 90 bytes

SEND OK
CLOSED

Can anybody please tell why is it showing busy again and again?

2

it shows "busy sending..." if you send something before the processing of the command finished with SEND OK, SEND FAIL.

3

I am not sending anything , after CIPSEND command i just pass the HTTP request statement of the number of characters that i send with CIPSEND .
If u want should i send you the video of doing so.

4

you send more then 90 characters. so yes you send something after 90 characters

5

Juraj:
you send more then 90 characters. so yes you send something after 90 characters

I am not sure I understand what you mean.

.

6

ieee488:
I am not sure I understand what you mean.

OP has
AT+CIPSEND=90
GET /test/comm/sens.php?key=f46fa009d3c6902ea2a805567c7ed4&val1=01&val2=02&val3=03&val4=04\r\n

but
GET /test/comm/sens.php?key=f46fa009d3c6902ea2a805567c7ed4&val1=01&val2=02&val3=03&val4=04\r\n
is more then 90 chars long

so the rest disturbs the AT firmware while it sends the 90 characters over the WiFi

7

Juraj:
OP has
AT+CIPSEND=90
GET /test/comm/sens.php?key=f46fa009d3c6902ea2a805567c7ed4&val1=01&val2=02&val3=03&val4=04\r\n

but
GET /test/comm/sens.php?key=f46fa009d3c6902ea2a805567c7ed4&val1=01&val2=02&val3=03&val4=04\r\n
is more then 90 chars long

so the rest disturbs the AT firmware while it sends the 90 characters over the WiFi

Okay. Thanks.

8

Yeah okay guys i got my problem solved thanks

9

Well now another kind of problem is coming
I have an API URL of a JSON response

http://innovations.thinkfinitylabs.com/test/comm/sens.php?key=f46fa009d3c6902ea2a805567c7ed4&val1=01&val2=02&val3=03&val4=04&Stat=1

The JSON data to be returned by this URL is
{"success":1,"message":"your Data successfully updated."}

Now when I access this URL on a browser, I get a healthy and as expected response

like this:

Now but when I access the same URL From esp8266 using AT commands:
the response received After GET command is cumbersome like this:

PIC:

VID:

Now why is this happening , does it related to backend work of website which i am using.
Or their is something related to my AT commands ?
Do provide valuable suggestions

10

your request is wrong and the response is missing the beginning.
the request string is more then 99 characters you send