Re: BlueSaab 6.1 - No "BlueSaab" Bluetooth device available after power up

Posted by Karlis on Jan 19, 2020; 4:46pm
URL: http://bluesaab-forum.90.s1.nabble.com/BlueSaab-6-1-No-BlueSaab-Bluetooth-device-available-after-power-up-tp1492p1580.html

It is expected that after a reset (or application of power) the blue and red LEDs flash alternatively. That indicates that RN52 module is in discovery mode. Green LED (flashing every second) indicates a presence status CAN frame being sent out on the bus. We call it the heartbeat indicator.

If I recall it correctly, RN52 will go into sleep mode if it does not get a pairing or re-connection request from a mobile device within 10 seconds of booting up. This is done for two reasons: 1. not to advertise when it's not necessary; 2. for "hackery" way of managing PDL (Paired Devices List). The latter means that if there's more than one device paired to BlueSaab, RN52 module will cycle through the PDL and try to connect to each of the devices. If it can't find a device within 10 seconds, it will look for the next one. And so on.

Clear as mud, eh'?