{start code} PUBLIC void pcf8574_set_Bit( Pcf8574 xdata *Object, Nat8 Pin, Bool Active ) { ASSERT( ( 0 <= Pin ) &&( Pin <= 7 ) ); ASSERT( ( Active == TRUE ) ||( Active == FALSE ) ); if ( Active ) { Object->Buffer |= _crol_( 0x01, Pin ); } else { Object->Buffer &= ~_crol_( 0x01, Pin ); } WriteI2c( Object ); } {end code}