This project was built to aid in debugging Linux kernel panics that occurred before the relevant logs could be written to disk, but can be used in any situation where an always on serial logging device is required.
This project is based around TI-RTOS v2.16.01.14 and XDCTools v3.32.00.06
It compiles using arm-none-eabi-gcc. I compile using gcc 10.2.0, but any version should work. The variables CODEGEN_INSTALL_DIR, XDC_INSTALL_DIR, andTIRTOS_INSTALL_DIR will need to be adjusted for your environment. Once these are set, simply type make, or make release to build a version that can run without a debugger.
See gdb.command for the debugging commands (some are openocd specific) to load the debug build onto a device
This project is built to run on a Tiva C Launchpad. One is required.
This project requires an SD card that can be connected via SPI (see sdcard.c for specific pins), and some form of UART connection for logging be available (see uart_logger_task.c for specific pins). Using the UART commandline can simply be done via the Launchpads' integrated UART connection.
Note: Only a rom built with make release can be flashed onto the launchpad and run without a connected debugger (due to GCC semihosting semantics). The produced bin file can be flashed using a tool such as lm4flash.
Once all wiring is connected, the system should power up and mount the SD card. No further work should be required to use the core logging feature. If you want to use the commandline, open a serial client like PUTTY on the integrated serial connection to the launchpad (on Linux the device is /dev/ttyAC0). Type help for a list of commands, or help [command] for help with a specific command.