Continue to Site

Welcome to our site!

Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

CPLD using VHDL

Status
Not open for further replies.
I thought it was that annoying text speak.
 
Very funny!
I live in Bangalore and Anusha and Anagha live in Mumbai!
How on earth could we be classmates????????????
 
Haha! Thats alright. Well Anagha and Anusha were using Hindi. I was replying because I know the language :)
Sorry if I sounded rude :)
 
90% of them don't come back.
 
Sorryyyyyyyyyy for not being here these days.... Really had a hard time in college. M here wid an idea plz help me out.
 
I have to make a CPLD based VHDL project. So My idea is to make AUTOMATED CAR PARKING PROTOTYPE. I hav written the code as per the required algorithm. CAn ny1 chk it for me? i dont hav VHDL software on my PC or else i wud have chked it on my own. please help. :confused:
 
Entity ABCD is
Port (
CurrentStatus : IN BIT_VECTOR(0 to 3);
S1,GND,FIRST : IN BIT;
LEDOUT : OUT BIT_VECTOR(0to3)
);
End ABCD;
Architecture A of ABCD is
Begin
Process (S1)
Variable : SavedStatus_GND : BIT_vector(0to3);
Variable : SavedStatus_FIRST : BIT_vector(0to3);
Begin
If (GND’event and GND=’1’ ) then
LEDOUT<= SavedStatus_GND;
If (S1’event and S1=’0’ ) then
SavedStatus_GND := CurrentStatus;
End if;
End if;
Wait for 10 ns;
LEDOUT<=”0000”;
If (FIRST’event and FIRST=’1’ ) then
LEDOUT<= SavedStatus_FIRST;
If (S1’event and S1=’0’ ) then
SavedStatus_FIRSt := CurrentStatus;
End if;
End if;
Wait for 10 ns;
LEDOUT<=”0000”;
End process ;
End A ;
 
hey lemme explain how it shud work...

-new user wil make s1 on
- he will decide gnd floor or first floor wid the help of switch GND nd FIRST
- led status will correspond to saved positions
- on led corresponds to occupied place n off says place is empty
-user will take the car to empty place n will make corresponding status i/p HIGH
-also he will turn s1 off before leaving his car
-when d nxt user arrives he will follow d same procedure.

U think dis will work?
 
Last edited:
Everything seems ok, but then why is the output a 3 bit vector? Any particular reason? Cant it be a 1 bit output?
Why do you have to use variables when there are only if statements? The assignment doesn't create an error due to time-delay, you can as well assign LEDOUT<=current_status
Oh and use an if-else statement to chose between the two floors.

EDIT: See the VHDL Project thread.
 
Last edited:
Status
Not open for further replies.

Latest threads

New Articles From Microcontroller Tips

Back
Top