Bluetooth on MQ-Pro

Pro / Dual / MQ-R
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1

Does anyone know of a Linux image for MQ-Pro where Bluetooth is working? I tried the Armbian image from Armbian on the MangoPi MQ Pro! | Bret's Tech, but it is not working. I could build Tina following the instructions in the mangopi-sbc/Tina-Linux GitHub repo, but I would like to know if Bluetooth is known to work on it before I spend the time.

I found https://github.com/lwfinger/rtl8723bs_bt, and thought this might work on the Armbian image, but the problem seems to be that /dev/ttyS1 is not set up for some reason (from the schematics I believe UART1 is used for Bluetooth). I get these messages in dmesg:

[    2.063411] 2500000.serial: ttyS0 at MMIO 0x2500000 (irq = 207, base_baud = 1500000) is a 16550A
[    2.085964] 2500400.serial: ttyS1 at MMIO 0x2500400 (irq = 208, base_baud = 1500000) is a 16550A
[    2.109830] serial serial0: tty port ttyS1 registered
[   16.696827] systemd[1]: Found device /dev/ttyS0.

So ttyS1 exists, but systemd does not create the block device in /dev. Manually creating it with mknod /dev/ttyS1 c 4 65 does not seem to work since trying to read from it gives cat: /dev/ttyS1: No such device or address.

Any ideas on this would be appreciated!

2

@balbes-150 I have the same question. Is Bluetooth supposed to be working out of the box on the Armbian image you made? If not, how can we enable it? (I actually bought the MQ-Pro specifically because it has the option of a Bluetooth antenna where the Raspberry Pi Zero doesn’t.)

Or would it be possible to include the necessary patches and extra materials mentioned here: Enabling bluetooth on MQ-Quad - #4 by NeoSkye ? All of that seems way beyond my skills unfortunately…