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mkhalil11-Visitor
1-Visitor
June 9, 2017
Question

Using AT command to Update Property value through GPRS Modem

  • June 9, 2017
  • 5 replies
  • 3602 views

Dear,

i'm trying to update property value on thingworx through Arduino connected to GPRS modem, i'm using HTTP PUT using AT command as per below, i always get error after last line

AT+CREG?

AT+CGACT?

AT+CMEE=1

AT+CGATT=1

AT+CSTT="etisalat"

AT+CIICR

AT+CIFSR

AT+CIPSTART="TCP","34.202.124.XX","443"

AT+CIPSEND

PUT /Thingworx/Things/etiajmp_mohamedkhalil1711/Properties/mykidname?appKey=58b3eb57-36ef-4f59-aa45-79b60099bXX2 HTTP/1.1

Accept: application/json, */*

Accept-Encoding: gzip,deflate

Connection: keep-alive

Content-Length: 21

Content-Type: application/json

Host: 34.202.124.206

{"mykidname" : "Amr"}

#26

Here is the output i get

AT+CIPSTART="TCP","34.202.124.206","443"

OK

CONNECT OK

TCP connection success

AT+CIPSEND

> PUT /Thingworx/Things/etiajmp_mohamedkhalil1711/Properties/mykidname?appKey=58b3eb57-36ef-4f59-aa45-79b60099b052 HTTP/1.1

Accept: application/json

Accept-Encoding: gzip,deflate

Connection: keep-alive

Content-Length: 21

Content-Type: application/json

Host: 34.202.124.206

User-Agent: HTTPie/0.9.6

{"mykidname" : "Amr"}

#26

ERROR

CLOSED

TCP connection is closed by remote server

Please check and help

5 replies

AdamR14-Alexandrite
14-Alexandrite
June 9, 2017

Hi Mohammed,

Being able to use a direct PUT command would require changing the platform subsystem settings to "Allow Request Method Switch" and turn off "Filter Content Type", but this can also open the platform up to cross site scripting vulnerabilities (but it would work).  The other option is to create a custom service on the same thing to save the value to the property and send a POST transaction with the defined service parameter to accept the property value.

Thanks,

Adam

    mkhalil11-VisitorAuthor
    1-Visitor
    June 9, 2017

    Thanks Adam Ressler​ , i have few comments
    1-Why PUT works fine on same thing and property when i use Postman but doesn't when i use AT commands
    2-For the other option, if i need to update pressure or Temperature value, do you mean that i have to create many services like
    servicepressure1,servicepressure2 ,.....servicepressure100,....then when i need to set property value pressure=50, i have to POST servicepressure50 and when i need to set value to 55, i have to post service servicepressure55,
    This would be very time consuming and there is huge probability for errors
    3-Lastly, if i change platform subsystem settings, would my code that i put in my earlier poster work, or it needs modification?


    mkhalil11-VisitorAuthor
    1-Visitor
    June 11, 2017

    adding to my reply,

    what if i need to update long/lat property, in this case triggering predefined service wouldn't help

    mkhalil11-VisitorAuthor
    1-Visitor
    June 11, 2017

    Dear Adam Ressler​ , Here is the latest updates

    i changed platform subsystem as per your recommendation

    AT+CIPSTART="TCP","34.202.1xx.xx","6725"

    AT+CIPSEND

    PUT /Thingworx/Things/arduinothing/Properties/mykidname?appKey=c55af751-41e5-4c45-8eb4-9f3e3a86ac99 HTTP/1.1

    Accept: application/json, */*

    Accept-Encoding: gzip,deflate

    Connection: keep-alive

    Content-Length: 21

    Content-Type: application/json

    Host: 217.165.211.74

    {"mykidname" : "Amr"}

    #26

    i still have no update on thingworx when i run the below AT Commands from Arduino

    ERROR

    CLOSED

    TCP connection is closed by remote server

    and get above error once i run above command sequence

    Please check and help if possible

    mliu-211-Visitor
    1-Visitor
    December 16, 2017

    Hi, Mohamed Khalil

    Do you solve using HTTP AT or TCP/IP AT command to POST json to Thingworx?

    HTTP AT  returned 500 always error code.

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