How to reconfigure/reset BLE? nrf 51822 - sd s130 2.0.1

[Trong-Nghia Cheng]

Firstly the develop environment.

Windows 10 KEIL as IDE Device: nrf 51822 - sd s130 2.0.1 - SDK 12.1 nRF5_SDK_12.0.0_12f24da.zip

Use case: We have 2 application mode for BLE

Application 1 (using a 3th. framework): only send frequency advertising as "alive signal"

• send advertising packets
• analyse public advertising packets

Application 2: pair with smartphone and exchange data.

• register event handle
• softdevice_ble_evt_handler_set
• softdevice_sys_evt_handler_set

The problem is (I'm uncertain about that)

After using application 2, the application 1 does not work anymore. If I'm trying to reinit softdevice, the whole application crashed. If I'm reset event handler e.g. (softdevice_ble_evt_handler_set(null)), the application crashed.

Can anyone help us to implements multi BLE-Modes with 1 device?

Thank you very much.

[Petter Myhre]

Are you sure you even need to reinit the SoftDevice? This is usually only needed when you change the attribute table, i.e. change the services, characteristics and so on. It seems application 1 only advertises and scans? And application 2 is the only one that ever is in a connection, and therefore only needs to use the attribute table.

If you still want to reinit, how are you doing this? Maybe you can include some code? Are any of the functions returning errors?

[Trong-Nghia Cheng]

Which attribute table?

• Can I read the doku about BLE-Pairing somewhere?

At the moment, the device restart by "reinit" softdevice.

[Petter Myhre]

The services, characteristics and descriptors are built from attributes, the attributes form the attribute table.

Why are you suddenly asking about BLE pairing? Anyways, this seems like a decent source. I haven't read it myself though. And you always have the Bluetooth specification itself.