CONN_SUP_TIMEOUT Question in ble_app_template (SDK14.2)

[Bryan H]

IN looking at CONN_SUP_TIMEOUT below:

#define CONN_SUP_TIMEOUT                MSEC_TO_UNITS(4000, UNIT_10_MS)         /**< Connection supervisory timeout (4 seconds). */

It says the units are 10 ms. if you take 4000 * 10 ms, you end up with 40000 ms which = 40 seconds - not 4 seconds. 

Also for MIN_CONN_INTERVAL as below:

#define MIN_CONN_INTERVAL               MSEC_TO_UNITS(100, UNIT_1_25_MS)        /**< Minimum acceptable connection interval (0.1 seconds). */

It says units are 1.25 ms.If you take 100 * 1.25 ms, you get 125 ms which =  0.125 seconds not 0.1 seconds.

Am I missing something here?

[Martin Lesund]

Hello Bryan,

 

  If you look at the MSEC_TO_UNITS macro you can see: 

#define MSEC_TO_UNITS(TIME, RESOLUTION) (((TIME) * 1000) / (RESOLUTION))