Auto Washing Machine for FPGA (VHDL Codes)

I guess you are asking for some system design ideas. To be honest this is a very wide question!

I have no idea what functions your washing machine has (Apart from the obvious :) ) so cannot give advice on the function of the VHDL, State Machines etc

I imagine some kind of FPGA based embedded processor plus control software plus control logic is required.

Since this is an Altera Forum I suggest looking at the NIOS processor (Maybe get hold of a NIOS Eval kit). You can find the schematics on the Altera web but you will have to design your own interface logic within the FPGA to the washing machines working parts!

In a nut shell, think NIOS for processsors. Think about embedded software. Think about logic between the NIOS processor and washing machine and trawl around the Altera website.

Good luck