This VHDL code measures the distance with HCSR 0 4 I want to add some values to the amount in specified distances and shows it on seven segment display The code that I sent always increases 1 5 whether sensor dedect in specified distances or not but want to increase 5 when sensor detect between 3 6 and 1 0 between 9 1 2 can you fix it according to this arrangements library IEEE use IEEE STD LOGIC 1 1 6 4 ALL use IEEE std logic unsigned all use ieee NUMERIC STD all entity decimal is Port ( sw in std logic vector ( 1 5 downto 0 ) reset in std logic clk in std logic an out std logic vector ( 3 downto 0 ) led out std logic vector ( 6 downto 0 ) ) end decimal architecture Behavioral of decimal is signal LED BCD integer signal refresh counter std logic vector ( 1 9 downto 0 ) signal LED activating counter std logic vector ( 1 downto 0 ) signal w 0 , w 1 , w 2 , w 3 integer 0 signal number integer 0 signal amount integer 0 signal prev number integer 0 To store previous number for comparison begin process ( clk , reset ) begin if reset ' 1 ' then refresh counter ( others ' 0 ' ) number 0 amount 0 prev number 0 elsif rising edge ( clk ) then refresh counter refresh counter 1 number TO INTEGER ( unsigned ( sw ) ) Conditional increment logic if ( number 3 and number 6 ) and not ( prev number 3 and prev number 6 ) then amount amount 5 elsif ( number 9 and number 1 2 ) and not ( prev number 9 and prev number 1 2 ) then amount amount 1 0 end if prev number number Update previous number end if end process w 3 amount 1 0 0 0 w 2 ( amount mod 1 0 0 0 ) 1 0 0 w 1 ( amount mod 1 0 0 ) 1 0 w 0 ( amount mod 1 0 ) process ( clk ) begin if rising edge ( clk ) then case refresh counter ( 1 9 downto 1 8 ) is when 0 0 an 0 1 1 1 LED BCD w 3 when 0 1 an 1 0 1 1 LED BCD w 2 when 1 0 an 1 1 0 1 LED BCD w 1 when 1 1 an 1 1 1 0 LED BCD w 0 when others null Do nothing end case end if end process Seven segment display decoder process ( LED BCD ) begin case LED BCD is when 0 led 0 0 0 0 0 0 1 0 when 1 led 1 0 0 1 1 1 1 1 when 2 led 0 0 1 0 0 1 0 2 when 3 led 0 0 0 0 1 1 0 3 when 4 led 1 0 0 1 1 0 0 4 when 5 led 0 1 0 0 1 0 0 5 when 6 led 0 1 0 0 0 0 0 6 when 7 led 0 0 0 1 1 1 1 7 when 8 led 0 0 0 0 0 0 0 8 when 9 led 0 0 0 0 1 0 0 9 when others led 0 0 0 0 0 0 1 Default or error case end case end process end Behavioral

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Question: This VHDL code measures the distance with HCSR 0 4 . I want to add some values to the amount in specified distances and shows

This VHDL code measures the distance with HCSR

04 .

I want to add some values to the amount in specified distances and shows it on seven segment display. The code that I sent always increases

15

whether sensor dedect in specified distances or not but want to increase

5

when sensor detect between

3 - 6

and

10

between

9 - 12 .

can you fix it according to this arrangements.

library IEEE;

use IEEE.STD

_

LOGIC

_1164 .

ALL;

use IEEE.std

_

logic

_

unsigned.all;

use ieee.NUMERIC

_

STD

.

all;

entity decimal is

Port

(

sw : in std

_

logic

_

vector

(15

downto

0)

;

reset : in std

_

logic;

clk : in std

_

logic;

an : out std

_

logic

_

vector

(3

downto

0)

;

led : out std

_

logic

_

vector

(6

downto

0)

)

;

end decimal;

architecture Behavioral of decimal is

signal LED

_

BCD : integer;

signal refresh

_

counter : std

_

logic

_

vector

(19

downto

0)

;

signal LED

_

activating

_

counter : std

_

logic

_

vector

(1

downto

0)

;

signal w

0,

1,

2,

3

: integer :

= 0

;

signal number : integer :

= 0

;

signal amount : integer :

= 0

;

signal prev

_

number : integer :

= 0

;

- -

To store previous number for comparison

begin

process

(

clk

,

reset

)

begin

if reset

=' 1'

then

refresh

_

counter

< = (

others

= >' 0')

;

number

< = 0

;

amount

< = 0

;

_

number

< = 0

;

elsif rising

_

edge

(

clk

)

then

refresh

_

counter

< =

refresh

_

counter

+ 1

;

number

< =

_

INTEGER

(

unsigned

(

))

;

- -

Conditional increment logic

(

number

> = 3

and number

< = 6)

and not

(

_

number

> = 3

and prev

_

number

< = 6)

then

amount

< =

amount

+ 5

;

elsif

(

number

> = 9

and number

< = 12)

and not

(

_

number

> = 9

and prev

_

number

< = 12)

then

amount

< =

amount

+ 10

;

end if;

_

number

< =

number;

- -

Update previous number

end if;

end process;

3 < =

amount

/ 1000

;

2 < = (

amount mod

1000) / 100

;

1 < = (

amount mod

100) / 10

;

0 < = (

amount mod

10)

;

process

(

clk

)

begin

if rising

_

edge

(

clk

)

then

case refresh

_

counter

(19

downto

18)

when

" 00 " = >

< = " 0111 "

;

LED

_

BCD

< =

3

;

when

" 01 " = >

< = " 1011 "

;

LED

_

BCD

< =

2

;

when

" 10 " = >

< = " 1101 "

;

LED

_

BCD

< =

1

;

when

" 11 " = >

< = " 1110 "

;

LED

_

BCD

< =

0

;

when others

= >

null;

- -

Do nothing

end case;

end if;

end process;

- -

Seven

-

segment display decoder

process

(

LED

_

BCD

)

begin

case LED

_

BCD is

when

0 = >

led

< = " 0000001 "

;

- - " 0 "

when

1 = >

led

< = " 1001111 "

;

- - " 1 "

when

2 = >

led

< = " 0010010 "

;

- - " 2 "

when

3 = >

led

< = " 0000110 "

;

- - " 3 "

when

4 = >

led

< = " 1001100 "

;

- - " 4 "

when

5 = >

led

< = " 0100100 "

;

- - " 5 "

when

6 = >

led

< = " 0100000 "

;

- - " 6 "

when

7 = >

led

< = " 0001111 "

;

- - " 7 "

when

8 = >

led

< = " 0000000 "

;

- - " 8 "

when

9 = >

led

< = " 0000100 "

;

- - " 9 "

when others

= >

led

< = " 0000001 "

;

- -

Default or error case

end case;

end process;

end Behavioral;

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