Hi,
I have 2 nrf52840 DK boards advertising on coded PHY mode. Once connected the connection is updated (using sd_ble_gap_phy_update()) to use 2M mode. No problem in doing so.
However, I have a situation or use case where after the successful update to 2M mode, but because of the distance between the 2 boards is too far for 2M mode to continue, I would like the connection to revert back down to coded PHY. Is that even possible in the first place? If it is possible, what are steps required to revert back to coded PHY.
In my testing,
I tried walking around to find the distance that is too far for 2M communication but still possible with Coded PHY.
What I find is that they always connect on coded and then updated to 2M. When the distance is too far apart, there is no connection at all even on coded PHY.
I can't find a distance/case where they connect on coded PHY but fail to update to 2M because of distance.
Some may say why not just connect on coded PHY and forget about 2M. My case is we want to use 2M whenever possilbe and auto revert down to coded PHY when physical distance does not allow 2M mode.
Your help is very much appreciated.
