LPC21xx

Note: The name of this package was recently changed from lpc21xx-boot to sysless-lpc21xx

Development tools

1. Download gcc-arm-elf-3.4.3-bin
2. Unpack this to the root direcotry

tar -C / -xvzf gcc-arm-elf-3.4.3-bin.tar.gz

Software

We have developed a tolpc tool, which can be now used for loading applications to RAM. For flash loading lpc21isp can be used. In future we will include flash programming posibility to tolpc.

Getting the software

Actual source code can be downloaded using a Git tool:

 git clone http://rtime.felk.cvut.cz/git/sysless-lpc21xx.git

This will create a copy of the repository on your computer. Later you can update your repository using the command:

 git pull

If you have an acount on the rtime server, you can use ssh-based access to the repository. If an administrater gave you the right for writing to the repository, you can not only read (pull) repository but also write (push) changes to the repository.

The syntax for getting the repo via ssh is:

 git clone <login>@rtime.felk.cvut.cz:/var/git/sysless-lpc21xx.git

Browsing of project sources is also possible via Darcs web interface. FIXME

If you plan to record some changes and push them back to the server, it is recomended to add the following lines to _darcs/prefs/boring:

^TAGS$
^config\.omk
^_build
^_compiled

Installation/Compilation

In order to compile sources from the repository and your applications, you need to "merge" the lpc21xx-boot tree to h8300-boot tree. Besides support for h8300 family processors, h8300-boot contains a general makefiles. lpc21xx-boot only contains support for LPC processors and reuses the makefiles from h8300 boot. In future, makefiles will be provided separately.

You need to follow these steps to prepare for compilation of sysless-lpc21xx.

1. Download H8300-boot repository to some directory (not under sysless-lpc21xx)
2. Change directory to h8300-boot

   cd h8300-boot

3. Run the script to merge sysless-lpc21xx to the tree.

   sh linkarch <path/to/sysless-lpc21xx>

   This should create symbolic links to the sysless-lpc21xx in the directory tree.
4. Follow the instructions for compilation for h8300-boot. Note, that you will execute make commands from the configured h8300-boot tree and not from sysless-lpc21xx tree.

Literature

• ARM Cross Development with Eclipse
• The Insider's Guide To The Philips ARM7-Based Microcontrollers (LPC21xx)
• ARM Laboratory Exercises (For the ARM Evaluator-7T Board)
• ARM microcontroller Wiki