BCM94352HMB Bluetooth BCM20702A0 driver in Ubuntu 14.04, bcm20702a0 driver download

BCM94352HMB Bluetooth BCM20702A0 driver in Ubuntu 14.04, bcm20702a0 driver download

Author: Qiu Yi

Source: http://www.cnblogs.com/qiuyi21/p/bcm20702a0_ubuntu.html

First, check the Bluetooth manufacturer ID (idVendor) and product ID (idProduct). in Linux, run the lsusb or usb-devices command to view the information. In Windows, view the information in device management, as shown in. My bluetooth idVendor is0x13d3, IdProduct isZero x 3404.

 

 

Most of Broadcom's bluetooth devices require a developer's firmware patch (RAM patch file), which is firmware in Linux and BCM20702A0 is no exception. In the Windows driver installation package provided by the computer vendor, you can find files such as "BCM20702A1_001.002.014.1443.1479.hex", which is the firmware memory patch. The file contains hexadecimal text, which can be opened.

 

How can I find the firmware memory patch file of my Bluetooth device?

 

Method 1: Find the driver information file (. inf) in the Windows Driver Installation Package, such as my "bcbtums-win8x64-brcm.inf ". Find "USB \ VID_13D3 & PID_3404" (the manufacturer ID and product ID are based on their own) and find information similar to the following:

% AzBtModule. DeviceDesc % = RAMUSB3404, USB \ VID_13D3 & PID_3404

 

Then, search for "[RAMUSB3404" and find information similar to the following:

[RAMUSB3404.CopyList]

Bcbtums. sys

Btwampfl. sys

BCM20702A1_001.002.014.1443.1479.hex

 

See the file name of ". hex.

 

Method 2: view it in the Device Manager of Windows, as shown in.

 

 

Save the ". hex" file and use it later. Restart the Ubuntu 14.04 operating system ......

 

The operations in Ubuntu are mainly commands.

Step 1: Modify the kernel. Use kernel 3.13 as an example.

Cd ~

Mkdir kernel

Cd kernel

Apt-get build-dep linux-image-'uname-R'

Apt-get source linux-image-'uname-R'

Cd linux-3.13.0/drivers/bluetooth/

Edit the code file btusb. c, find the device code of BCM20702A0

/* Broadcom BCM20702A0 */

{USB_DEVICE (0x0b05, 0x17b5 )},

{USB_DEVICE (0x0b05, 0x17cb )},

{USB_DEVICE (0x04ca, 0x2003 )},

{USB_DEVICE (0x0489, 0xe042 )},

{USB_DEVICE (0x13d3, 0x3388),. driver_info = BTUSB_BCM_PATCHRAM },

{USB_DEVICE (0x13d3, 0x3389),. driver_info = BTUSB_BCM_PATCHRAM },

{USB_DEVICE (0x413c, 0x8197),. driver_info = BTUSB_BCM_PATCHRAM },

{USB_DEVICE (0x413c, 0x8143),. driver_info = BTUSB_BCM_PATCHRAM },

Change

/* Broadcom BCM20702A0 */

{USB_DEVICE (0x13d3, 0x3404),. driver_info = BTUSB_BCM_PATCHRAM },

{USB_DEVICE (0x0b05, 0x17b5 )},

{USB_DEVICE (0x0b05, 0x17cb )},

{USB_DEVICE (0x04ca, 0x2003 )},

{USB_DEVICE (0x0489, 0xe042 )},

{USB_DEVICE (0x13d3, 0x3388),. driver_info = BTUSB_BCM_PATCHRAM },

{USB_DEVICE (0x13d3, 0x3389),. driver_info = BTUSB_BCM_PATCHRAM },

{USB_DEVICE (0x413c, 0x8197),. driver_info = BTUSB_BCM_PATCHRAM },

{USB_DEVICE (0x413c, 0x8143),. driver_info = BTUSB_BCM_PATCHRAM },

Save the changes, compile the btusb module, and execute:

Make-C/lib/modules/'uname-R'/build M = 'pwd' modules

The btusb. ko file will be compiled normally. Update to your operating system kernel:

Mv/lib/modules/'uname-R'/kernel/drivers/bluetooth/btusb. ko/

Cp btusb. ko/lib/modules/'uname-R'/kernel/drivers/bluetooth/

Depmod

 

Step 2: generate the firmware of the bluetooth device (firmware ).

Git clone https://github.com/jessesung/hex2hcd.git

Cd hex2hcd

Make

./Hex2hcd BCM20702A1_001.002.014.1443.1479.hexFw-13d3_3404.hcd

Note that the generated file name must be in the format of "fw-<4-digit manufacturer number in hexadecimal format> _ <4-digit product number in hexadecimal format>. hcd", in lower case.

 

Copy the firmware file to the specified directory:

Cp fw-13d3_3404.hcd/lib/firmware/

Chown root: root/lib/firmware/fw-13d3_3404.hcd

 

OK. You can run "rmmod btusb; modprobe btusb" or restart the operating system to see if the Bluetooth driver is normal. If it is normal, execute the command "rfkill list" to see hci0, and then execute "hciconfig hci0 up" to enable Bluetooth and "hcitool dev" to see the bluetooth device, "hcitool scan" can scan the surrounding Bluetooth signal. If not, run dmesg to view logs for troubleshooting.

 

Note: Because the kernel module is modified, upgrading the kernel of the operating system will invalidate the Bluetooth driver. You need to re-compile and install the btusb module under the new kernel.