1# Modifications to Segger RTT v6.54 for BTstack 2- SEGGER_RTT_GCC.c: 3 - include <btstack_config.h> 4 - check for ENABLE_SEGGER_RTT 5 - fix prototype for `_write_r`: 6 - old: `int _write_r(struct _reent *r, int file, const void *ptr, int len);` 7 - new: `_ssize_t _write_r(struct _reent *r, int file, const void *ptr, size_t len) 8- SEGGER_RTT.h/c 9 - add SEGGER_RTT_GetAvailWriteSpace 10