Passkey from a central with no display and keyboard

[@nj@ly]

Hi all, I am working with PCA10028. I have a peripheral and central both are devices with no display and no keyboard. both peripheral and central device are under our control. I want to pair both devices using passkey method. whether it is possible? whether I can use sd_ble_gap_auth_key_reply() API to send the known passkey from the central side.

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[Petter Myhre]

You should look into using a static passkey. Please see this for more information. This example from Github may also be helpful to you, it is for an older SDK though(6.1.0). Please add a comment if you get into trouble.