text: 
  #define P1_26_MASK  (1<<26)
  #define P1_28_MASK  (1<<28)
  #define P1_29_MASK  (1<<29)
  
  int tn_snprintf( char *outStr, int maxLen, const char *fmt, ... );
  void dbg_send(char * buf);
  void dbg_send_int(char * buf);
  extern char dbg_buf[];
  void dbg_pin_on(int pin_mask);
  void dbg_pin_off(int pin_mask);
  
  
  
  
  