Platforms_BeagleBoard

Building for BeagleBoard XM

These notes are from a build for BeagleBoard XM Rev C1 running the Angstrom demo.

You can probably cross compile from most Linux distributions. I used Ubuntu 11.10 on a Mac running as a VMWare application. It was downloaded from.

http://www.trendsigma.net/vmware/ubuntu1110t.html

Install the ALSA development packet for the BeagleBoard target into the cross compiler toolchain. In Ubuntu Linux enter:

su -
source /usr/local/angstrom/arm/environment-setup
opkg-target update
opkg-target install alsa-dev

I recommend using the nightly snapshot of PortAudio V19 from http://www.portaudio.com/download.html

Copy it to a "Work" directory in a user account on Ubuntu.

Move to the PortAudio directory:

cd ~/Work/portaudio

You will need to pass options to "configure" to tell it to cross-compile for BeagleBoard and not for your desktop Linux. The settings below will cause it to link directly with the static library "lib/.libs/libportaudio.a".

The first command below, starting with CFLAGS, is all on one line:

CFLAGS="-march=armv7-a -mtune=cortex-a8 -mfpu=neon -mfloat-abi=softfp" ./configure --host=arm-angstrom-linux-gnueabi --prefix=/usr/local/angstrom/arm --disable-shared

make
ls bin

You should end up with a bunch of test files in the bin folder. Copy a test file from Ubuntu to your BeagleBoard using scp. You will need to change the IP address and account name to match your setup.

scp bin/paex_sine phil@192.168.1.120:/home/phil/.

Then on the BeagleBoard, as root, enter:

cd ~phil
./paex_sine

If you have speakers hooked up, then you should hear a sine wave play for 5 seconds.