How to dynamic change timer using app_timer ?

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