#include #include FILE* _dbg_file; void debug_serial(FILE* serial) { _dbg_file = serial; }; FILE* debug_stream(void) { if (_dbg_file) return _dbg_file; return NULL; }; void debug(char* line) { if (_dbg_file) { fputs(line, _dbg_file); fputs("\r\n", _dbg_file); }; };