The BeagleBone LCD7 Cape provides an LCD solution with touchscreen capability for BeagleBone boards.
http://elinux.org/CircuitCo:BeagleBone_LCD7
Cross-Compiling an Application for BeagleBone on a Linux PC
How to Cross-Compile any application program for the Angstrom Distribution of Linux running on the ARM processor populated on the BeagleBone, in your desktop (OSD):
Step1: First step is to download the SDK used for cross-compilation from the below link:
http://www.angstrom-distribution.org/toolchains/angstrom-2011.03-i686-linux-armv7a-linux-gnueabi-toolchain.tar.bz2
Step2: Now the SDK has to be unzipped by issuing the below command from the directory in which the downloaded tar file has been stored.
$ sudo tar -C / -xjf angstrom-2011.03-i686-linux-armv7a-linux-gnueabi-toolchain.tar.bz2
This will create the new directory /usr/local/angstrom/arm/
Step3: Before we can start using the commands for compiling our source files, the build environment has to be setup by issuing the below command:
$ . /usr/local/angstrom/arm/environment-setup (Note. Take care of the space after dot)
Step4: To cross-compile a normal C file the below command has to be issued:
$ arm-angstrom-linux-gnueabi-gcc -o <desired executable name> <C-source filename>
e.g. :
$ arm-angstrom-linux-gnueabi-gcc -o helloworld hello.c
Shown above is the command equivalent to gcc . The executables corresponding to such commands reside in the directory:
/usr/local/angstrom/arm/bin . In the above example an executable named helloworld will get generated after hello.c has been
successfully cross-compiled.
How to execute the application after successful cross-compilation:
After the executable helloworld has been generated, it has to be transferred to the BeagleBone to execute. The following steps need to be followed for this:
Step1: To transfer the executable from the HOST PC to BeagleBone the following command has to be issued:
$ scp <filename with path> beaglebone_user_id@BeagleBone_IP:.
e.g. :
$ scp home/aeb3kor/helloworld root@10.170.104.71:.
In the above example root is the user id of the BeagleBone .
Step2: Once the transfer has successfully happened, we can execute helloworld on the BeagleBone by issuing the command:
root@BeagleBone ~# ./helloworld
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Techs it easy 