How to dynamic change timer using app_timer ?

Hi, any reply ?

Hi 

John12 said:

Hi, any reply ?

We aim to provide an answer within the next working day (CET), which means a question coming in on Friday should be answered by Monday next week. 

So how can I dynamic change the timer (app_timer) ?

It should be sufficient to stop the timer and start it again with a different timeout period. Could you try this?

Best regards
Torbjørn

Ok thank ovrebekk. My approach that is using an timer and change it if this method is possible, I think it is better than method you suggest. I'll try "stop and re-create" timer method. ^^

void change_timer(int interval) {
  app_timer_stop(m_app_timer_id);
  app_timer_start(m_app_timer_id, APP_TIMER_TICKS(interval), NULL);
}

here is my code for those who come later

Thanks for sharing the code, that is more or less how I imagined it

Hi ovrebekk,
Can I reinit this app timer many time ??
I'm build an project that change dynamic timer in many times per 1 minute. And sometime seem nRF can not stop and start when I check debug terminal. I checked my code carfully I think the reason is at timer.
And more, BLE not work stabel like I not use 2 timer before

I'm using 2 app timer, and ble. Can you suggest for me some attentions when use app timer and change the period continously ?

Hi ovrebekk,
Can I reinit this app timer many time ??
I'm build an project that change dynamic timer in many times per 1 minute. And sometime seem nRF can not stop and start when I check debug terminal. I checked my code carfully I think the reason is at timer.
And more, BLE not work stabel like I not use 2 timer before

I'm using 2 app timer, and ble. Can you suggest for me some attentions when use app timer and change the period continously ?

Hi 

If you are experiencing issues caused by starting and stopping timers too often it could be because the APP_TIMER_CONFIG_OP_QUEUE_SIZE is too small. 

Can you let me know what this parameter is set to? 
You should find it in the sdk_config.h file. 

Could you try to increase it to a larger value and see if it works better?

Best regards
Torbjørn

Hi ovrebekk, thanks so much for your supports

Here is my timer setting in sd_config.h
#define APP_TIMER_CONFIG_OP_QUEUE_SIZE 10

1. How much do I need to increase?
2. What is the maximum period I can set if I using app_timer ? I set 6 minuter per update but seem nRF not work correctly. It work perfect if I set 30 second per update

Hi 

John12 said:

1. How much do I need to increase?

I would try to double the value first and see if it makes a difference. If this doesn't help then probably the issue is caused by something else. 

John12 said:

2. What is the maximum period I can set if I using app_timer ? I set 6 minuter per update but seem nRF not work correctly. It work perfect if I set 30 second per update

Could you try to increase the APP_TIMER_CONFIG_RTC_FREQUENCY parameter in sdk_config.h?

Try to set it to 15 for instance, and you should be able to support 6 minute updates without any issues. 

Best regards
Torbjørn