These are the files that will help bootstrap the usage of the TI Tiva C 123 launchpad.

Setting up the toolchain

1. Download the GCC ARM Embedded toolchain:

• [Windows] (https://launchpad.net/gcc-arm-embedded/4.8/4.8-2014-q2-update/+download/gcc-arm-none-eabi-4_8-2014q2-20140609-win32.exe). Install, and select the options to add to the PATH.
• [Linux] (https://launchpad.net/gcc-arm-embedded/4.8/4.8-2014-q2-update/+download/gcc-arm-none-eabi-4_8-2014q2-20140609-linux.tar.bz2) (or your package manager, look for gcc-arm-none-eabi).

2. Build tools - this project relies heavily on makefiles.
   • Windows
     1. Download and install a minGW-compatible shell. The easiest way to get that is to install msysgit.
     2. Install msys. Add the msys/bin path to your PATH; i.e: append C:\msys\1.0\bin to your PATH variable.
   • Linux is easy. Install build-essential from your distro repositories.
3. Test by running arm-none-eabi-gcc -v and make from a shell. If they run, you're good to go.
4. Install Stellaris drivers for Windows. Linux can use lm4flash as it just uses libusbxx.

Advanced Setup

This isn't essential to build code for the Tiva C, but advanced users might find this section helpful.

Debugging

Real-time debugging the Tiva C through (arm-none-eabi)GDB requires openocd version 0.8 or greater. The -g must be added to CFLAGS if it doesn't exist already.

1. Install arm-none-eabi-gdb. This is included in the Windows package automatically, but Linux users must download and install the package separately.

2. Install openocd version 0.8 or greater.

3. Locate the openocd binary, and find the scripts/board/ek-lm4f120xl.cfg file. It should be under /usr/share or /usr/local/share on Linux.

4. Start openocd with the path to the config file.

   • on Linux, this would be

   openocd -f /usr/share/openocd/scripts/board/ek-lm4f120xl.cfg

5. In your project directory, start gdb with the path to the payload.bin file.

   arm-none-eabi-gdb payload.bin
   

6. Tell gdb to connect to openocd:

   target extended-remote :3333
   

7. To reset the microcontroller:

   monitor reset init