mqtt publish

[ephraim]

Dear Sir.

Using the mqtt_simple project , I inserted a 1 sec timer.

Within the timer I want to use the publish routine  like this

 data_publish(&client,MQTT_QOS_1_AT_LEAST_ONCE,&json_text[0],_PUBLISH_SRC.json_reisha_size);

Is it OK ? , or the publish routine should be synchronized with the mqtt loop ?.

Please Advise

[Øyvind]

Hello, 

What timer are you using? The k_timer is interrupt based, and the data_publish is effectively interrupt based due to the Inter Processor Communication between the modem and the application. This will cause issues as you are effectively getting a nested interrupt, and can cause kernel panics. Please see the interrupts chapter for more information

We recommend using the workqueue threads instead, as according to the Offloading ISR work subchapter.

Kind regards,
Øyvind