typedef  byte Exp_state_T ;

 const  Exp_state_T Exp_state_OFF          =  B00000001 ; 
 const  Exp_state_T Exp_state_ON           =  B00000010 ;
 const  Exp_state_T Exp_state_ON_LOW       =  B00000100 ; // = pwm 10
 const  Exp_state_T Exp_state_ON_MED       =  B00001000 ; // = pwm * 10
 const  Exp_state_T Exp_state_ON_HI        =  B00010000 ; // = pwm * 2
 const  Exp_state_T Exp_state_BLINK        =  B00100000 ;
 const  Exp_state_T Exp_state_SET          =  B01000000 ; //when was initialized and set output
 const  Exp_state_T Exp_state_ERROR        =  B10000000 ;
 
 //const  Exp_state_T Exp_state_TOGGLE     =  B10000000 ;


 //const    Exp_state_OFF  0x01
 //#define    Exp_state_ON  0x02