Main program running when workpiece is ready on deferent belt(deferent_ready=ture).

*　　　　　　 Call Square_Wave subroutine to generate 0.5ms square wave on P1.2 to drive

* electromotor,then drive deferent belt step forward. When it steps to the measure

* zone, it stops to be measured. Then call A_D subroutine to transform analog

* signals to digital signals , after then call serial subroutine to transfer

* digital signals to PC. Call square wave subroutine to drive deferent belt step to

* original position waitting for defere ready flag to run the next circle.-Main program running when workpiece is ready on deferent belt(deferent_ready=ture).

*　　　　　　　 Call Square_Wave subroutine to generate 0.5ms square wave on P1.2 to drive

*　　　　　　　electromotor,then drive deferent belt step forward. When it steps to the measure

*　　　　　　　zone, it stops to be measured. Then call A_D subroutine to transform analog

*　　　　　　　signals to digital signals , after then call serial subroutine to transfer

*　　　　　　　digital signals to PC. Call square wave subroutine to drive deferent belt step to

*　　　　　　　original position waitting for defere ready flag to run the next circle.