How to switch master/slave role with Bluetopia stack?

Hi Nathan,

I believe that hcitool command sends the "HCI_Switch_Role" command to the device.
If you're using the BluetopiaPM APIs, then you can use DEVM_SendRawHCICommand(). With Bluetopia, you can use HCI_Switch_Role() API directly.

Regards,
Gigi Joseph.

Hi Gigi,

Thanks for your replay,

One more question , can I add the below command to the Bluetooth firmware file?

Send_HCI_Switch_Role BD_ADDR, 0x00
Wait_HCI_Command_Status_Event 2000, 0x00, Any, 0x080b

Nathan Kuo

Hi Nathan,

No, it's not possible.
The command requires the BD_ADDR of the remote device to which the local device is connected.

During firmware load, it won't be available.

Regards,
Gigi Joseph.

Hi Gigi,

 

If  "BD_ADDR" of the remote deivce  is "a85b7858a9ec"

 

Send_HCI_Switch_Role "a85b7858a9ec", 0x00

### Convert to HCI format

0x02 0x0b 0xec 0xa9 0x58 0x78 0x5b 0xa8 0x00

 

The HCI format  is right?

Log:

root@android:/ # LinuxDEVM

* 51)SendRawHCICommand *
* Help, Quit. *
******************************************************************

DEVM>1 1
1 1

BTPM_Initialize() Success: 0.
DEVM_RegisterEventCallback() Success: 4.

DEVM>10 1
10 1

DEVM_PowerOnDevice() Failure: -10037, Local Device is already Powered Up.
Function Error.

DEVM>51 0x02 0x0b 0xec 0xa9 0x56 0x78 0x5b 0x18 0x00
51 0x02 0x0b 0xec 0xa9 0x56 0x78 0x5b 0x18 0x00

Invalid Input.

Nathan Kuo

From the firmware logger , the command seems working?

Nathan Kuo

Yes, please close the thread if it answers your question.

Regards,
Gigi Joseph.

Hi Gigi,

Thanks for your support.



Nathan Kuo