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Commit efa53bc8 authored by Rashed Al-Lahaseh's avatar Rashed Al-Lahaseh
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Add payment fsm entity 

Payment FSM Entity
parent dfe17c80
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Project/e_payment_fsm.vhd 0 → 100644
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library ieee;
use ieee.std_logic_1164.all;
entity e_payment_fsm is
generic(n:integer:= 16);
port(
coin_in: in std_logic_vector(n-13 downto 0); -- "1 Euro, 50cents, 20cents, 10cents" -- "1111"
coin_out: out std_logic_vector(n-13 downto 0); -- "1 Euro, 50cents, 20cents, 10cents" -- "1111"
payment: out integer range 0 to 290;
paid: out boolean
);
end e_payment_fsm;
architecture a_payment_fsm of e_payment_fsm is
type payment_states is (zero_cent, ten_cents, twenty_cents, thirty_cents, fourty_cents, fifty_cents, sixty_cents,
seventy_cents, eighty_cents, ninety_cents, one_euro, one_euro_ten_cents,
one_euro_twenty_cents, one_euro_thirty_cents, one_euro_fourty_cents, one_euro_fifty_cents, one_euro_sixty_cents,
one_euro_seventy_cents, one_euro_eighty_cents, one_euro_ninety_cents,two_euro, two_euro_ten_cents, two_euro_twenty_cents,
two_euro_thirty_cents, two_euro_fourty_cents, two_euro_fifty_cents, two_euro_sixty_cents, two_euro_seventy_cents,
two_euro_eighty_cents, two_euro_ninety_cents);
signal sl_coin_state: payment_states := zero_cent;
------------------------------------- architecture begins -------------------------------------
begin
process(coin_in) begin
case sl_coin_state is
when zero_cent =>
if (coin_in = "0001") then sl_coin_state <= ten_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= twenty_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= fifty_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= one_euro; --+100
else sl_coin_state <= zero_cent;-- +0
end if;
coin_out <= "0000";
payment <= 0;
when ten_cents =>
if (coin_in = "0001") then sl_coin_state <= twenty_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= thirty_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= sixty_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= one_euro_ten_cents; --+100
else sl_coin_state <= ten_cents;-- +0
end if;
coin_out <= "0000";
payment <= 10;
when twenty_cents =>
if (coin_in = "0001") then sl_coin_state <= thirty_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= fourty_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= seventy_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= one_euro_twenty_cents; --+100
else sl_coin_state <= twenty_cents;-- +0
end if;
coin_out <= "0000";
payment <= 20;
when thirty_cents =>
if (coin_in = "0001") then sl_coin_state <= fourty_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= fifty_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= eighty_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= one_euro_thirty_cents; --+100
else sl_coin_state <= thirty_cents;-- +0
end if;
coin_out <= "0000";
payment <= 30;
when fourty_cents =>
if (coin_in = "0001") then sl_coin_state <= fifty_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= sixty_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= ninety_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= one_euro_fourty_cents; --+100
else sl_coin_state <= fourty_cents;-- +0
end if;
coin_out <= "0000";
payment <= 40;
when fifty_cents =>
if (coin_in = "0001") then sl_coin_state <= sixty_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= seventy_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= one_euro;-- +50
elsif(coin_in = "1000") then sl_coin_state <= one_euro_fifty_cents; --+100
else sl_coin_state <= fifty_cents;-- +0
end if;
coin_out <= "0000";
payment <= 50;
when sixty_cents =>
if (coin_in = "0001") then sl_coin_state <= seventy_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= eighty_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= one_euro_ten_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= one_euro_sixty_cents; --+100
else sl_coin_state <= sixty_cents;-- +0
end if;
coin_out <= "0000";
payment <= 60;
when seventy_cents =>
if (coin_in = "0001") then sl_coin_state <= eighty_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= ninety_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= one_euro_twenty_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= one_euro_seventy_cents; --+100
else sl_coin_state <= seventy_cents;-- +0
end if;
coin_out <= "0000";
payment <= 70;
when eighty_cents =>
if (coin_in = "0001") then sl_coin_state <= ninety_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= one_euro;-- +20
elsif(coin_in = "0100") then sl_coin_state <= one_euro_thirty_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= one_euro_eighty_cents; --+100
else sl_coin_state <= eighty_cents;-- +0
end if;
coin_out <= "0000";
payment <= 80;
when ninety_cents =>
if (coin_in = "0001") then sl_coin_state <= one_euro;-- +10
elsif(coin_in = "0010") then sl_coin_state <= one_euro_ten_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= one_euro_fourty_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= one_euro_ninety_cents; --+100
else sl_coin_state <= ninety_cents;-- +0
end if;
coin_out <= "0000";
payment <= 90;
when one_euro =>
if (coin_in = "0001") then sl_coin_state <= one_euro_ten_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= one_euro_twenty_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= one_euro_fifty_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= two_euro; --+100
else sl_coin_state <= one_euro;-- +0
end if;
coin_out <= "0000";
payment <= 100;
when one_euro_ten_cents =>
if (coin_in = "0001") then sl_coin_state <= one_euro_twenty_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= one_euro_thirty_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= one_euro_sixty_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= two_euro_ten_cents; --+100
else sl_coin_state <= one_euro_ten_cents;-- +0
end if;
coin_out <= "0000";
payment <= 110;
when one_euro_twenty_cents =>
if (coin_in = "0001") then sl_coin_state <= one_euro_thirty_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= one_euro_fourty_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= one_euro_seventy_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= two_euro_twenty_cents; --+100
else sl_coin_state <= one_euro_twenty_cents;-- +0
end if;
coin_out <= "0000";
payment <= 120;
when one_euro_thirty_cents =>
if (coin_in = "0001") then sl_coin_state <= one_euro_fourty_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= one_euro_fifty_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= one_euro_eighty_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= two_euro_thirty_cents; --+100
else sl_coin_state <= one_euro_thirty_cents;-- +0
end if;
coin_out <= "0000";
payment <= 130;
when one_euro_fourty_cents =>
if (coin_in = "0001") then sl_coin_state <= one_euro_fifty_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= one_euro_sixty_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= one_euro_ninety_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= two_euro_fourty_cents; --+100
else sl_coin_state <= one_euro_fourty_cents;-- +0
end if;
coin_out <= "0000";
payment <= 140;
when one_euro_fifty_cents =>
if (coin_in = "0001") then sl_coin_state <= one_euro_sixty_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= one_euro_seventy_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= two_euro;-- +50
elsif(coin_in = "1000") then sl_coin_state <= two_euro_fifty_cents; --+100
else sl_coin_state <= one_euro_fifty_cents;-- +0
end if;
coin_out <= "0000";
payment <= 150;
when one_euro_sixty_cents =>
if (coin_in = "0001") then sl_coin_state <= one_euro_seventy_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= one_euro_eighty_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= two_euro_ten_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= two_euro_sixty_cents; --+100
else sl_coin_state <= one_euro_sixty_cents;-- +0
end if;
coin_out <= "0000";
payment <= 160;
when one_euro_seventy_cents =>
if (coin_in = "0001") then sl_coin_state <= one_euro_eighty_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= one_euro_ninety_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= two_euro_twenty_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= two_euro_seventy_cents; --+100
else sl_coin_state <= seventy_cents;-- +0
end if;
coin_out <= "0000";
payment <= 170;
when one_euro_eighty_cents =>
if (coin_in = "0001") then sl_coin_state <= one_euro_ninety_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= two_euro;-- +20
elsif(coin_in = "0100") then sl_coin_state <= two_euro_thirty_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= two_euro_eighty_cents; --+100
else sl_coin_state <= one_euro_eighty_cents;-- +0
end if;
coin_out <= "0000";
payment <= 180;
when one_euro_ninety_cents =>
if (coin_in = "0001") then sl_coin_state <= two_euro;-- +10
elsif(coin_in = "0010") then sl_coin_state <= two_euro_ten_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= two_euro_fourty_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= two_euro_ninety_cents; --+100
else sl_coin_state <= one_euro_ninety_cents;-- +0
end if;
coin_out <= "0000";
payment <= 190;
when two_euro =>
coin_out <= "0000";
paid <= true;
payment <= 200;
when two_euro_ten_cents =>
coin_out <= "0001"; -- give back 10
paid <= true;
payment <= 210;
when two_euro_twenty_cents =>
coin_out <= "0010"; -- give back 20
paid <= true;
payment <= 220;
when two_euro_thirty_cents =>
coin_out <= "0011"; -- give back 10, 20
paid <= true;
payment <= 230;
when two_euro_fourty_cents =>
coin_out <= "0011"; -- give back 10, 20
sl_coin_state <= two_euro_ten_cents; -- to give back the remaining 10 cents
payment <= 240;
when two_euro_fifty_cents =>
coin_out <= "0100"; -- give back 50
paid <= true;
payment <= 250;
when two_euro_sixty_cents =>
coin_out <= "0101"; -- give back 50, 10
paid <= true;
payment <= 260;
when two_euro_seventy_cents =>
coin_out <= "0110"; -- give back 50, 20
paid <= true;
payment <= 270;
when two_euro_eighty_cents =>
coin_out <= "0111"; -- give back 50, 20, 10
paid <= true;
payment <= 280;
when two_euro_ninety_cents =>
coin_out <= "0111"; -- give back 50, 20, 10
sl_coin_state <= two_euro_ten_cents; -- to give back the remaining 10 cents
payment <= 290;
end case;
end process;
end architecture;
\ No newline at end of file
Project/e_payment_fsm.vhd.bak 0 → 100644
View file @ efa53bc8
library ieee;
use ieee.std_logic_1164.all;
entity e_payment_fsm is
generic(n:integer:= 16);
port(
coin_in: in std_logic_vector(n-13 downto 0); -- "1 Euro, 50cents, 20cents, 10cents" -- "1111"
coin_out: out std_logic_vector(n-13 downto 0); -- "1 Euro, 50cents, 20cents, 10cents" -- "1111"
payment: out integer range 0 to 290;
paid: out boolean
);
end e_payment_fsm;
architecture a_payment_fsm of e_payment_fsm is
type payment_states is (zero_cent, ten_cents, twenty_cents, thirty_cents, fourty_cents, fifty_cents, sixty_cents,
seventy_cents, eighty_cents, ninety_cents, one_euro, one_euro_ten_cents,
one_euro_twenty_cents, one_euro_thirty_cents, one_euro_fourty_cents, one_euro_fifty_cents, one_euro_sixty_cents,
one_euro_seventy_cents, one_euro_eighty_cents, one_euro_ninty_cents,two_euro, two_euro_ten_cents, two_euro_twenty_cents,
two_euro_thirty_cents, two_euro_fourty_cents, two_euro_fifty_cents, two_euro_sixty_cents, two_euro_seventy_cents,
two_euro_eighty_cents, two_euro_ninty_cents);
signal sl_coin_state: payment_states := zero_cent;
------------------------------------- architecture begins -------------------------------------
begin
process(coin_in) begin
case sl_coin_state is
when zero_cent =>
if (coin_in = "0001") then sl_coin_state <= ten_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= twenty_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= fifty_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= one_euro; --+100
else sl_coin_state <= zero_cent;-- +0
end if;
coin_out <= "0000";
payment <= 0;
when ten_cents =>
if (coin_in = "0001") then sl_coin_state <= twenty_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= thirty_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= sixty_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= one_euro_ten_cents; --+100
else sl_coin_state <= ten_cents;-- +0
end if;
coin_out <= "0000";
payment <= 10;
when twenty_cents =>
if (coin_in = "0001") then sl_coin_state <= thirty_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= fourty_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= seventy_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= one_euro_twenty_cents; --+100
else sl_coin_state <= twenty_cents;-- +0
end if;
coin_out <= "0000";
payment <= 20;
when thirty_cents =>
if (coin_in = "0001") then sl_coin_state <= fourty_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= fifty_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= eighty_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= one_euro_thirty_cents; --+100
else sl_coin_state <= thirty_cents;-- +0
end if;
coin_out <= "0000";
payment <= 30;
when fourty_cents =>
if (coin_in = "0001") then sl_coin_state <= fifty_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= sixty_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= ninety_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= one_euro_fourty_cents; --+100
else sl_coin_state <= fourty_cents;-- +0
end if;
coin_out <= "0000";
payment <= 40;
when fifty_cents =>
if (coin_in = "0001") then sl_coin_state <= sixty_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= seventy_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= one_euro;-- +50
elsif(coin_in = "1000") then sl_coin_state <= one_euro_fifty_cents; --+100
else sl_coin_state <= fifty_cents;-- +0
end if;
coin_out <= "0000";
payment <= 50;
when sixty_cents =>
if (coin_in = "0001") then sl_coin_state <= seventy_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= eighty_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= one_euro_ten_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= one_euro_sixty_cents; --+100
else sl_coin_state <= sixty_cents;-- +0
end if;
coin_out <= "0000";
payment <= 60;
when seventy_cents =>
if (coin_in = "0001") then sl_coin_state <= eighty_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= ninety_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= one_euro_twenty_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= one_euro_seventy_cents; --+100
else sl_coin_state <= seventy_cents;-- +0
end if;
coin_out <= "0000";
payment <= 70;
when eighty_cents =>
if (coin_in = "0001") then sl_coin_state <= ninety_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= one_euro;-- +20
elsif(coin_in = "0100") then sl_coin_state <= one_euro_thirty_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= one_euro_eighty_cents; --+100
else sl_coin_state <= eighty_cents;-- +0
end if;
coin_out <= "0000";
payment <= 80;
when ninety_cents =>
if (coin_in = "0001") then sl_coin_state <= one_euro;-- +10
elsif(coin_in = "0010") then sl_coin_state <= one_euro_ten_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= one_euro_fourty_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= one_euro_ninty_cents; --+100
else sl_coin_state <= ninety_cents;-- +0
end if;
coin_out <= "0000";
payment <= 90;
when one_euro =>
if (coin_in = "0001") then sl_coin_state <= one_euro_ten_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= one_euro_twenty_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= one_euro_fifty_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= two_euro; --+100
else sl_coin_state <= one_euro;-- +0
end if;
coin_out <= "0000";
payment <= 100;
when one_euro_ten_cents =>
if (coin_in = "0001") then sl_coin_state <= one_euro_twenty_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= one_euro_thirty_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= one_euro_sixty_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= two_euro_ten_cents; --+100
else sl_coin_state <= one_euro_ten_cents;-- +0
end if;
coin_out <= "0000";
payment <= 110;
when one_euro_twenty_cents =>
if (coin_in = "0001") then sl_coin_state <= one_euro_thirty_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= one_euro_fourty_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= one_euro_seventy_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= two_euro_twenty_cents; --+100
else sl_coin_state <= one_euro_twenty_cents;-- +0
end if;
coin_out <= "0000";
payment <= 120;
when one_euro_thirty_cents =>
if (coin_in = "0001") then sl_coin_state <= one_euro_fourty_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= one_euro_fifty_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= one_euro_eighty_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= two_euro_thirty_cents; --+100
else sl_coin_state <= one_euro_thirty_cents;-- +0
end if;
coin_out <= "0000";
payment <= 130;
when one_euro_fourty_cents =>
if (coin_in = "0001") then sl_coin_state <= one_euro_fifty_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= one_euro_sixty_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= one_euro_ninety_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= two_euro_fourty_cents; --+100
else sl_coin_state <= one_euro_fourty_cents;-- +0
end if;
coin_out <= "0000";
payment <= 140;
when one_euro_fifty_cents =>
if (coin_in = "0001") then sl_coin_state <= one_euro_sixty_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= one_euro_seventy_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= two_euro;-- +50
elsif(coin_in = "1000") then sl_coin_state <= two_euro_fifty_cents; --+100
else sl_coin_state <= one_euro_fifty_cents;-- +0
end if;
coin_out <= "0000";
payment <= 150;
when one_euro_sixty_cents =>
if (coin_in = "0001") then sl_coin_state <= one_euro_seventy_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= one_euro_eighty_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= two_euro_ten_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= two_euro_sixty_cents; --+100
else sl_coin_state <= one_euro_sixty_cents;-- +0
end if;
coin_out <= "0000";
payment <= 160;
when one_euro_seventy_cents =>
if (coin_in = "0001") then sl_coin_state <= one_euro_eighty_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= one_euro_ninety_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= two_euro_twenty_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= two_euro_seventy_cents; --+100
else sl_coin_state <= seventy_cents;-- +0
end if;
coin_out <= "0000";
payment <= 170;
when one_euro_eighty_cents =>
if (coin_in = "0001") then sl_coin_state <= one_euro_ninety_cents;-- +10
elsif(coin_in = "0010") then sl_coin_state <= two_euro;-- +20
elsif(coin_in = "0100") then sl_coin_state <= two_euro_thirty_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= two_euro_eighty_cents; --+100
else sl_coin_state <= one_euro_eighty_cents;-- +0
end if;
coin_out <= "0000";
payment <= 180;
when one_euro_ninety_cents =>
if (coin_in = "0001") then sl_coin_state <= two_euro;-- +10
elsif(coin_in = "0010") then sl_coin_state <= two_euro_ten_cents;-- +20
elsif(coin_in = "0100") then sl_coin_state <= two_euro_fourty_cents;-- +50
elsif(coin_in = "1000") then sl_coin_state <= two_euro_ninty_cents; --+100
else sl_coin_state <= one_euro_ninety_cents;-- +0
end if;
coin_out <= "0000";
payment <= 190;
when two_euro =>
coin_out <= "0000";
paid <= true;
payment <= 200;
when two_euro_ten_cents =>
coin_out <= "0001"; -- give back 10
paid <= true;
payment <= 210;
when two_euro_twenty_cents =>
coin_out <= "0010"; -- give back 20
paid <= true;
payment <= 220;
when two_euro_thirty_cents =>
coin_out <= "0011"; -- give back 10, 20
paid <= true;
payment <= 230;
when two_euro_fourty_cents =>
coin_out <= "0011"; -- give back 10, 20
sl_coin_state <= two_euro_ten_cents; -- to give back the remaining 10 cents
payment <= 240;
when two_euro_fifty_cents =>
coin_out <= "0100"; -- give back 50
paid <= true;
payment <= 250;
when two_euro_sixty_cents =>
coin_out <= "0101"; -- give back 50, 10
paid <= true;
payment <= 260;
when two_euro_seventy_cents =>
coin_out <= "0110"; -- give back 50, 20
paid <= true;
payment <= 270;
when two_euro_eighty_cents =>
coin_out <= "0111"; -- give back 50, 20, 10
paid <= true;
payment <= 280;
when two_euro_ninety_cents =>
coin_out <= "0111"; -- give back 50, 20, 10
sl_coin_state <= two_euro_ten_cents; -- to give back the remaining 10 cents
payment <= 290;
end case;
end process;
end architecture;
\ No newline at end of file
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