NRF as a BLE central and a peripheral with different services

[hbody34]

Hi,

I'd like to use one NRF52840 in BLE as a central and a peripheral at the same time. I saw your example project "ble_app_hrs_rscs_relay". I'd like to do almost the same thing but with differents services:

- the HR sensor is a peripheral for the NRF52840 (with HR services) (NRF is the central)

- the same NRF is also a peripheral for a mobile application : the service used is the UART service (like in your example "ble_app_uart"); the mobile is the central.

Do you think it  is possible?

Thank you

[Einar Thorsrud]

Yes, this is definitely possible. The nRF can act as both central and peripheral concurrently, with a significant number of connections (up to 20 with a recent SoftDevice version). With more roles and connections there is a bit more to keep track of so the project becomes a bit more complex, but that is all. And yo are free to use different services for different roles.

[David C.]

Hi, Einar.  Do you know if this can be done using Zephyr?

[Einar Thorsrud]

Yes, it can be sone with Zephyr. You can refer to Bluetooth: Central and Peripheral HRS for an example of a combined central and peripheral.