mqtt simple + timer collision

[ephraim]

Dear Sir.

We are using software based on mqtt simple project .

We added a 1 hz timer, Every 1 hz we toggle a led on and off.

Sometime the led is stuck on " on " or " off  which means to me that the timer is not 

working fine or the mqtt routine in the background stops it.

Any idea how to debug this problem.

Please Advise.

[Sigurd Hellesvik]

Hi Ephraim,

My guess is that this is due to scheduling.

Could you post the code and configuration you use for the timer?

Regards,
Sigurd Hellesvik

[ephraim]

Hi.

Another input.

I have found the following is responsible for the timer's mismatch

if((get_mqtt_conn_flag() == 1)) { // && (gtimer > 50)) {
printk("Try to connect - 1, %d \n",gtimer);
lte_lc_offline();
set_mqtt_conn_flag(3);
} else if (get_mqtt_conn_flag() == 2) {
printk("Try to connect - 2, %d \n",gtimer);
lte_lc_normal();
battery_value = get_battery_value();
set_latest_valid_battery_value(battery_value);
set_mqtt_conn_flag(3);
}

It is either the lte_lc_offline(); or the lte_lc_normal(); 

Please Advise

[Sigurd Hellesvik]

Hi

If you se LOG_INF to log inside "my_expiry_function()", you should get prints with timestamps.
Then log inside the work done by "work_top".

This will help us find if the delay is in the timer or the work queue.

Regards,
Sigurd Hellesvik