Linux/WL1837MOD: Porting the TI Dual-Mode Bluetooth Stack to a Yocto Enviroment

It would be preferable if a Yocto Recipe could be provided that would could include in our Yocto Environment.
Our Yocto Environment uses the Linaro 4.8 Toolchain and our kernel version is 3.1.10

You will need to write your own recipe and download code separately. The download is from http://www.ti.com/tool/ti-bt-4-2-stack-linux-addon . You need to accept a click wrap license to get at a tarball of the delivery. Once you have that tarball you can put it in your download repository.

 

There is a script to build the Bluetopia as part of a larger SDK project you can download from https://gforge.ti.com/gf/download/user/1160/8013/sdk3.0.1-system-build-v3.2.tar.gz (wiki is http://processors.wiki.ti.com/index.php/WL1835%5CWL1837-Wireless-Sensor-Gateway).

 

The key info I think you might need to create the .bb file is in the lines below. Hopefully this gives you all the information you need to create a .bb file

 Iain

 

SDK_DIR=`pwd`

BLUETOPIA=AM335xBluetopiaLinuxProduction-4.2.1.0.1.0

 

 

#set environment for Bluetopia build

export BLUETOPIA_PATH=${SDK_DIR}/${BLUETOPIA}/BluetopiaPM/Bluetopia/

export BLUETOPIA_ROOT_PATH=${SDK_DIR}/${BLUETOPIA}/BluetopiaPM/Bluetopia/

export TI_SDK_PATH=${SDK_DIR}

 

export NATIVE_PATH=x86_64-arago-linux

export TARGET_PATH=armv7ahf-neon-linux-gnueabi

export CROSS_COMPILE="${SDK_DIR}/linux-devkit/sysroots/${NATIVE_PATH}/usr/bin/arm-linux-gnueabihf-"

export PATH="$PATH:${SDK_DIR}/linux-devkit/sysroots/${NATIVE_PATH}/usr/bin"

export USR_INCLUDE_PATH="${SDK_DIR}/linux-devkit/sysroots/${TARGET_PATH}/usr"

 

# Pick up the correct kernel version used in this particular SDK

KERNEL_VER=linux-4.4.19+gitAUTOINC+db0b54cdad-gdb0b54cdad

 

 

…..

 

 

cd ${BLUETOPIA} || exit

 

# Bluetopia 4.0.3 has a preparation stage before building

   

# first stage is to create build/setup-bt with correct paths for this SDK

cd build || exit

cp setup-bt.sample setup-bt

 

# now substitute root directory of this SDK and correct linux kernel

sed --in-place "s:~/ws/sdk/am335x-sdk8.00:${SDK_DIR}:g" setup-bt

sed --in-place "s:linux-3.14.26-g2489c02:${KERNEL_VER}:g" setup-bt

 

# and update tool chain subdirectories

cp proj/toolchain-defs.mak proj/toolchain-defs.mak.original

sed --in-place "s:i686-arago-linux:${NATIVE_PATH}:g" proj/toolchain-defs.mak

sed --in-place "s:cortexa8t2hf-vfp-neon-linux-gnueabi:${TARGET_PATH}:g" proj/toolchain-defs.mak

cd ..

 

  

 

# import env settings for bluetopia

cd build || exit

source configure.sh

 

# and rebuild all bluetopia package including the newly added app

make clobber

make

cd ..

 

 

# Now cd to the filesystem directory

cd ${INSTALL_PATH}

 

 

# copy bth stack

sudo mkdir -p home/root/sensors

sudo cp ${SDK_DIR}/${BLUETOPIA}/BluetopiaPM/bin/SS1BTPM home/root/

sudo chmod a+x home/root/SS1BTPM

 

 

Thanks for the feedback, I noticed you mentioned a Linux Kernel version of 4.4.xx

Is there a version of the Stack that is supported on older kernels?

One limitation is we are working with a Linux Kernel 3.1.10 and don't have support from our main soc manufacturer to updating the kernel past this version.

Hi Brent,
There is no kernel dependency in Bluetopia, that was just to make build script work. As is, Bluetopia expects a device tree to set UART etc which I expect you will need to hardcode if you are on a 3.1.
The only real dependency is that you need to have a hard float file system as the binaries are compiled with an armhf toolchain.
Iain