sd_ble_gap_authenticate api

[Swetika]

Hi,

I want to know how sd_ble_gap_authenticate api works.After executing this api, what are the events invoked at peripheral end. Is there any event that blocks CPU or ppi channel.

Central softdevice S120 V2.1.0 Peripheral softdevice s110 V8.0.0 Chipset nRF51822 QFAC Rev. 3

Thanks

[Ulrich Myhre]

Hi,

There are message sequence charts for this in the documentation. Central events and API calls and peripheral side of things. Note that the peripheral can (optionally) start pairing by calling sd_ble_gap_authenticate(). This is covered here.

Please have a look at the API documentation for sd_ble_gap_authenticate() as well. Note that the central will not set any security parameters in sd_ble_gap_sec_params_reply(), because these are already provided in the first authenticate() call.

On our later revision chips, there should not be any blocking of the CPU except during radio activity, as it runs at the highest priority.