advertising state machine

[Don]

Is there any documentation on the advertising state machine ? This post :

devzone.nordicsemi.com/.../

mentions the state machine and how it progresses from fast, to slow , then to idle states, but I can't find any documentation that states how or when those transitions occur.

[Don]

I'm assuming part of it has to do with how the options in ble_adv_modes_config_t are configured... correct ?

[Håkon Alseth]

Hi Don,

Here's the documentation and state-machine for the advertising module: infocenter.nordicsemi.com/.../lib_ble_advertising.html

However; this does not state anything about the configuration struct. In most BLE-peripheral examples, this is done in function advertising_init():

ble_adv_modes_config_t options = {0};
options.ble_adv_fast_enabled  = BLE_ADV_FAST_ENABLED;
options.ble_adv_fast_interval = APP_ADV_FAST_INTERVAL;
options.ble_adv_fast_timeout  = APP_ADV_FAST_TIMEOUT;
options.ble_adv_slow_enabled  = BLE_ADV_SLOW_ENABLED;
options.ble_adv_slow_interval = APP_ADV_SLOW_INTERVAL;
options.ble_adv_slow_timeout  = APP_ADV_SLOW_TIMEOUT;

Then to start advertising, based on the configuration that you've passed to the module, you can call:

APP_ERROR_CHECK(ble_advertising_start(BLE_ADV_MODE_FAST));

or if you'd like to start with slow advertisement:

APP_ERROR_CHECK(ble_advertising_start(BLE_ADV_MODE_SLOW));

Cheers, Håkon