segger_rtt

Why These Files Are Here

These files are taken from the SEGGER RTT source examples. They are here because:

1. In order not to lock interrupts out for the sake of logging we modify the locks around the logging parts to be RTOS locks rather than critical section locks.
2. In the Nordic version of SEGGER_RTT_Conf.h SEGGER_RTT_LOCK()/SEGGER_RTT_UNLOCK() are defined directly (i.e. without #ifdefs around them) to be critical section locks; hence we need to use a modified version of SEGGER_RTT_Conf.h.
3. The inclusion of SEGGER_RTT_Conf.h, via SEGGER_RTT.h, is done with quoted includes rather than angle-bracket includes, which means that a header file found in the same directory takes priority, irrespective of the include paths passed to the compiler, and all the .c and .h files are in the same directory.
4. Hence, to modify SEGGER_RTT_LOCK()/SEGGER_RTT_UNLOCK(), the SEGGER_RTT_Syscalls_*.c files have to be copied locally, so we might as well use the oiginal SEGGER version and avoid getting tangled up in nRF5 SDK #defines.