APP_ADV_INTERVAL and APP_ADV_DURATION

[kathleenlai]

Hi, 

I'm trying to look for a definition for the APP_ADV_DURATION and APP_ADV_INTERVAL. 

#define APP_ADV_INTERVAL                300                                    /**< The advertising interval (in units of 0.625 ms. This value corresponds to 187.5 ms). 
#define APP_ADV_DURATION                18000                                  /**< The advertising duration (180 seconds) in units of 10 milliseconds. 

How does we know the value we set is in units of 0.625ms or 10ms ?

Can anyone teach me? or guide me any module shall I look into?

[Simonr]

Hi Kathleen

Sorry about the confusion, but I see what you mean now.

All timer units are by default in ms (milliseconds). However, as you can see in I.E. the ble_app_blinky example in the MIN_CONN_INTERVAL define, you can convert them to units of your choice by way of the MSEC_TO_UNITS() function. APP_ADV_INTERVAL and DURATION are not possible to edit though and have these units for a reason.

In conclusion, timers that are defined by you, will by default be stated in units of 1ms, unless you convert them using the MSEC_TO_UNITS() function. 

[kathleenlai]

Oh so grateful U get what I want. 

I found if I  #define MYTIME_INTERVAL  3000 (with interval word) this will be in units of 0.625 ms.

with duration word , it will be in units of 10ms.

[Simonr]

Yes, I forgot to mention that. But you are correct!

Best regards,

Simon

[kathleenlai]

Hi Simonr, thank you so much, you are so helpful.

[kathleenlai]

Hi Simonr, by the way, where can I get the concatenate function declaration  for the specific word "interval " and "duration" since APP_ADV_INTERVAL and DURATION are not possible to edit though and have these units for a reason.