HTTP POST AT command

[Alban THIERRY]

Hello,

I'm working on the nrf9160 devkit. I'm working only on AT command and I don't understand why I have to send +++ after each message I send :

> AT#XHTTPCREQ="POST","/todos","User-Agent: slm\r\naccept: */*\r\n","text",5

OK

#XHTTPCREQ: 1
>tests+++

#XDATAMODE: 0

#XHTTPCREQ: 0
HTTP/1.1 200 OK
Access-Control-Allow-Origin: *
Content-Type: application/json
Date: Thu, 04 Jan 2024 15:51:47 GMT
Vary: Accept-Encoding
X-Beeceptor-Rule-Id: defaultpst
Transfer-Encoding: chunked

4

#XHTTPCRSP:207,1
test
0


#XHTTPCRSP:11,1

If I don't put the +++ after tests the chip send the http request but don't print the response of the server and keep stuck waiting for the +++

[Øyvind]

Hello, 

Could you please elaborate more on what you are trying to achieve? Are you trying to use the Serial LTE Modem in data mode? From the documentation:

When running in data mode, the application does the following:

• It considers all the data received from the MCU over the UART bus as arbitrary data to be streamed through the LTE network by various service modules.

• It considers all the data streamed from a remote service as arbitrary data to be sent to the MCU over the UART bus.

 SLM data mode is applied automatically while using HTTP request. Please see the documentation for more info. 

Kind regards,
Øyvind

[Alban THIERRY]

Hello,

What I try to achieve is to have a micro controller with ble embedded (master) that talk to  NRF9160 through AT command  to sent to a HTTP server the BLE data. I have the ble part and now I'm working on the nrf9160. I'm able to send GET request to a HTTP server and now I want to send a POST request.

In the nordic exemple  : https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/applications/serial_lte_modem/doc/HTTPC_AT_commands.html

they also put +++ after the hello world. Do you know the purpose of it ? I can't find it in the documentation.

Best regards,

Alban

[Øyvind]

Alban THIERRY said:

they also put +++ after the hello world. Do you know the purpose of it ? I can't find it in the documentation.

This is the default pattern string to terminate data mode, as described in the documentation under Configuration options.

[Alban THIERRY]

Ok thank for link :)

[Øyvind]

You're welcome