The code I wrote was working fine but the logic is wrong. The code starts putting enable to '0', that means, open the door and let the information go to the LCD.

That's wrong. Enable should be '1' and each time you write to or read to LCD turn it to '0' and after a little time put it again to '1'.

All the answers were wrong since I didn`t have to write four or three time the Status.

The only thing was the Enable. If you use the code make sure to write more sub-routines to reduce the code.

Also, I use the 89c51, that's why you don't need to declare R0, or R1 to R7.

Good Luck !