Want A door open and close using 8051

[friendchooser]

I want to open a door to be opened with 89c51 as after 90 degree the motor should be of automatically and after A smaalll delay it should close the door

#include <reg51.h>
void MSDelay(unsigned int);
void main(void)
{


P1=0x55;
MSDelay(15);
P1=0xAA;
MSDelay(15);

}
void MSDelay(unsigned int itime)
{
unsigned int i,j;
for (i=0;i<itime;i++)
for (j=0;j<80;j++);
}

this is the circuit i am using and the motor does not stops
plz give an urgent suggestion or ammendments in the code

---------- Post added at 01:26 ---------- Previous post was at 01:25 ----------

The frequency i am giving is through the microcontroller

 

[romel_emperado]

you need to tell us when the door would be open so that we can add a condition in your program.... in short we need little more info about your project

 

[friendchooser]

when the person enters his face will be detected and the door open automatically and after some delay the door will be closed

 

[romel_emperado]

okay...take this example.. you will have basic Idea based in this example..

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Code C - [expand]
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void main()
{
   face_detected = 0;
   door_open = 0;
  while(1)
 {
    if(face_detected == 1)
     {
         door_open = 1
         delay_sec(5); 
         face_detected = 0   
     }
     door_close = 1;
 }
}

---

 

[nandhu015]

It is better to have a sensor at open and close position. Use a limit switch.