Re: Bluez5.43 stack for bcm4334x chipset

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Hi Raja,


On 12/02/2017 20:56, Barry Byford wrote:
Hello Raja,

On 12 February 2017 at 16:14, Sinthu Raja M
<sinthu.raja@xxxxxxxxxxxxxxxxxxxx> wrote:
Hi,
I am working on Bluez5.43 stack, cross compiled for ARM v7 and
successfully compiled. also ported into the target device. I am using
Broadcom bluetooth chip (BCM4334x)The problem is when i do a hciconfig
i am getting the following result

# hciconfig
hci0: Type: Primary  Bus: UART
BD Address: 72:8E:6C:AB:DD:A4  ACL MTU: 1021:8  SCO MTU: 64:1
DOWN
RX bytes:647 acl:0 sco:0 events:32 errors:0
TX bytes:407 acl:0 sco:0 commands:32 errors:0

1)  I am not able to scan any devices.  what could be the possible
causes ? In my other bluetooth device it is detected as Bluetooth USB
Host Controller

Typically meet this issue when running non-patched/embedded bcm firmware.
HCI link is OK but controller functionalities limited. I suppose the radio is off.


2) But I am expecting the following result
# hciconfig
hci0:   Type: BR/EDR  Bus: UART
         BD Address: C4:00:49:00:06:D9  ACL MTU: 1021:8  SCO MTU: 64:1
         UP RUNNING PSCAN ISCAN
         RX bytes:3640 acl:0 sco:0 events:317 errors:0
         TX bytes:43776 acl:0 sco:0 commands:311 errors:

What modifications I need to be done in hciattach_bcm4334x.c code
inorder to get the above output or I need to modify in some other
files of Bluez?
I'm not sure if it is relevant to your situation but on the Raspbery Pi 3
I need to apply the following patches to BlueZ 5.43 for the BCM43xx
https://gist.github.com/pelwell/c8230c48ea24698527cd

The issue I see without the patch is that the controller has an
address of all A's in bluetoothctl.



Yes, seems to be the point here, check you have the correct firmware/patch-file and maybe
update the firmware dir accordingly.


What is your kernel version ?
Broadcom support is integrated in the kernel since Linux 4.1 and It is recommended
to use it (via btattach) instead of using hciattach (the old way).


Regards,
Loic
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