Sending MQTT packet over uart to pass it to Telit modem

[subod...@gmail.com]

Hi All,
I want to send MQTT packet over UART (made available by nxp microcontroller [ARM Cortex-m4])to pass it to Telit GPRS modem.
Telit modem is having TCP/IP implemented in it.
How can I transfer this MQTT packet from UART to Modem.
My ultimate goal is to at-least publish some data to MQTT broker(AWS IoT platform) using modem.

can somebody guide me on this?

[Thomas]

Hi,

How about starting the MQTT client of your choice. Calling the connect function and after you have read the data from the UART call the publish function with the data from the UART. 

Have you given that a try? 

Thomas

[subodh mankar]

Hi Thomas,

I have Successfully connected to iot.eclipse.org:1883 from modem and published data there.

I used MQTTlens(chrome plugin) to monitor published data.
Normal publish work for me.

What should I do to communicate with AWS?
I am using rooCA, pvt-key and thing certificated already stored in modem.
when I connect AWS using AT#SSL...command.... after successful connection, does normal MQTT packet will be get delivered to AWS IOT console?

Regards,

Subodh

[Thomas]

Hi Subodh,

Glad to hear that the connect to iot.eclipse.org worked for you. As for connecting to AWS I have no idea. I suggest you read up on the AWS documentation.

Good luck,

Thomas