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 

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 

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