how to make a device to advertise constantly forever

[ps_anu]

hi ... i am using nRF52832  , SDK 15.2 version, using ble_app_uart example , here i want to advertise the device constantly, for that what should i change 

i tried to change the #define APP_ADV_DURATION                18000     to 0 ..i am getting fatal error

[RSA]

as i understand you can only set the interval from " 20ms to 10.24 seconds, in steps of 0.625ms. " while a random delay is used to prevent nodes syncronising (and therefore being undetectable. maybe read this https://www.argenox.com/library/bluetooth-low-energy/ble-advertising-primer/

Why would you want to advertise constantly?

[Einar Thorsrud]

Hi,

This is probably caused by you using BLE_GAP_ADV_FLAGS_LE_ONLY_LIMITED_DISC_MODE, and then advertising forever is not allowed. You can fix the problem by changing to BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE.

(Note that generally, you should test a debug build to see which function returned what error code. That would probably have given you the above solution right away.)