openMMC
Installation:
The following packages are needed in your system in order to compile the firmware:
- gcc-arm-none-eabi
- cmake
- cmake-gui (Optional)
gcc-arm-none-eabi can be installed from the pre-compiled files found at: https://launchpad.net/gcc-arm-embedded/+download or you can run the following command under Ubuntu:
sudo apt-get install gcc-arm-none-eabi
Next step is to clone this repository into your workspace.
git clone https://github.com/lnls-dig/openMMC
Compilation
Create a new folder wherever is suitable
cd <build_folder>
Run CMake using the path to the repository folder as an direct argument and the flag -DBOARD=<board_name> and -DVERSION=<board_version> to configure the compilation scripts to your specific board hardware
cmake <path_to_source> -DBOARD=<board_name> -DVERSION=<board_version>
Example:
cmake ~/openmmc/ -DBOARD=afc -DVERSION=3.1
After creating the build files with CMake, you can compile the firmware using make, optionally setting the VERBOSE flag to 1 if you wish to see all the compilation commands
make [VERBOSE=1]
Both a .axf file and a .bin file will be generated in the out folder. You can use any one you prefer to program your processor.
To clean the compilation files (binaries, objects and dependence files), just run
make clean
Programming
After creating the binaries, you can program them to your chip any way you want, using a JTAG cable, ISP Programmer, custom bootloader, etc.
There are 2 program interfaces supported so far: LPCLink and LPCLink2
In order to select which interface will be used, include the flag -DDEBUG_PROBE=<probe_name> when running CMake (this option defaults to LPCLink).
cmake ~/openmmc/ -DBOARD=afc -DVERSION=3.1 -DDEBUG_PROBE=LPCLink2
LPCLink
If you own a LPCLink or LPCLink2 board, you can use it to program the LPC1764 processor via its JTAG interface
NOTE: In this case you must have the LPCXpresso installed in your machine, since we need to use the binaries for the interface chip on the LPCLink that they provide.
The CMake script should be able to find LPCXpresso path, but if this is not possible, open the <openMMC_root_folder>/CMakeLists.txt and change the following line
set(LPCXPRESSO_PATH <lpcxpresso_path>)
NOTE: You can also use cmake-gui to set this option.
To transfer only the application firmware, run
make program_app
To transfer only the bootloader firmware, run
make program_boot
If you want to erase the whole Flash and copy both firmwares:
make program_all
NOTE 2: We only have linker scripts to LPC1764 and LPC1769, so if you wish to compile to a different controller, you'll have to change the linker/lpc1764_boot.ld and linker/lpc1764_app.ld files, which defines the memory regions, otherwise you'll run into several HardFault errors.