IMX8 plus bluetooth module enabling problem

[hlatafat]

I am using the IMX8 PLUS evaluation board and I am having same problem enabling the Bluetooth module. I followed the instruction from the document: “UM11483 Getting Started with NXP Wireless Modules for i.MX 8M-Quad Platforms” in the attachment.

I could successfully enable the wireless module. But for the Bluetooth,  first I execute a command “hciattach /dev/ttymxc2 any 115200 flow” as suggested in the document and the result is as expected:

“Setting TTY to N_HCI line discipline
Device setup complete“

After that I run the command “hciconfig hci0 up” but with timeout errors:

[  132.478107] Bluetooth: hci0: command 0x1003 tx timeout

[  134.494103] Bluetooth: hci0: command 0x1001 tx timeout

[  136.510105] Bluetooth: hci0: command 0x1009 tx timeout

Can't init device hci0: Connection timed out (110)      

Could you please help me solve this problem?

Thank you in advance

[amul_patel]

How you enabled hciattach utility in android?

[hlatafat · Accepted solution]

I solved this issue by using "hciattach /dev/ttymxc0 any 115200 flow" instead of "hciattach /dev/ttymxc2 any 115200 flow".

The problem was my board is IMX 8M Plus but the user guide was for the 8MQ board.

[joanxie]

what imx8mp board do you use? nxp board or your customized board? and what bluetooth chip do you use?

[hlatafat]

I use nxp evaluation board 8MPLUS- BB..

As for the bluetooth chip it has a combined wifi and bluetooth Azureware chip (AW-CM276MA).

I attached photos of board and the wifi-bluetooth module.

Thank you.