EDA16x16点阵滚动+动画显示.docx
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EDA16x16点阵滚动+动画显示
四、课程设计的总体步骤
1、单个字符的显示（如：
黄）：
libraryieee;
useieee.std_logic_1164.all;
useieee.std_logic_unsigned.all;
entityxianshiis
port（clk2:
instd_logic;
rck,sck:
outstd_logic;
si:
outstd_logic）;
end;
architectureoneofxianshiis
signalsel:
std_logic_vector（3downto0）;
signalq:
std_logic_vector（31downto0）;
signali:
integerrange0to31;
signalcoi:
std_logic;
begin
process（sel,clk1）
begin
caseselis
when"0000"=>q<="1111";
when"0001"=>q<="1111";
when"0010"=>q<="1111";
when"0011"=>q<="1111";
when"0100"=>q<="1111";
when"0101"=>q<="1111";
when"0110"=>q<="1111";
when"0111"=>q<="1111";
when"1000"=>q<="1111";
when"1001"=>q<="1111";
when"1010"=>q<="1111";
when"1011"=>q<="1111";
when"1100"=>q<="0111";
when"1101"=>q<="1011";
when"1110"=>q<="1101";
when"1111"=>q<="1110";
whenothers=>null;
endcase;
ifclk1'eventandclk1='1'then
si<=q（i）;i<=i+1;coi<='0';
ifi=31theni<=0;coi<='1';sel<=sel+'1';
endif;
rck<=notcoi;
endif;
endprocess;
sck<=clk1;
end;
时序仿真：
从图中可以看出，当clk1在第32个上升沿rck变为低电频，sck与clk1是同一电频，故此程序满足要求。
2、多个字符的跳动显示（如：
黄小红）：
libraryieee;
useieee.std_logic_1164.all;
useieee.std_logic_unsigned.all;
entityxianshiis
port（clk1:
instd_logic;
clk2:
instd_logic;
rck,sck:
outstd_logic;
si:
outstd_logic）;
end;
architectureoneofxianshiis
signallie:
std_logic_vector（3downto0）;
signalsel:
std_logic_vector（3downto0）;
signalq:
std_logic_vector（31downto0）;
signali:
integerrange0to31;
signalcoi:
std_logic;
begin
process（sel,clk1,clk2）
begin
ifclk2'eventandclk2='1'then
lie<=lie+'1';
endif;
caselieis
when"0000"=>
caseselis
when"0000"=>q<="1111";
when"0001"=>q<="1111";
when"0010"=>q<="1111";
when"0011"=>q<="1111";
when"0100"=>q<="1111";
when"0101"=>q<="1111";
when"0110"=>q<="1111";
when"0111"=>q<="1111";
when"1000"=>q<="1111";
when"1001"=>q<="1111";
when"1010"=>q<="1111";
when"1011"=>q<="1111";
when"1100"=>q<="0111";
when"1101"=>q<="1011";
when"1110"=>q<="1101";
when"1111"=>q<="1110";
whenothers=>null;
endcase;
when"0001"=>
caseselis
when"0000"=>q<="1111";
when"0001"=>q<="1111";
when"0010"=>q<="1111";
when"0011"=>q<="1111";
when"0100"=>q<="1111";
when"0101"=>q<="1111";
when"0110"=>q<="1111";
when"0111"=>q<="1111";
when"1000"=>q<="1111";
when"1001"=>q<="1111";
when"1010"=>q<="1111";
when"1011"=>q<="1111";
when"1100"=>q<="0111";
when"1101"=>q<="1011";
when"1110"=>q<="1101";
when"1111"=>q<="1110";
whenothers=>null;
endcase;
when"0010"=>
caseselis
when"0000"=>q<="1111";
when"0001"=>q<="1111";
when"0010"=>q<="1111";
when"0011"=>q<="1111";
when"0100"=>q<="1111";
when"0101"=>q<="1111";
when"0110"=>q<="1111";
when"0111"=>q<="1111";
when"1000"=>q<="1111";
when"1001"=>q<="1111";
when"1010"=>q<="1111";
when"1011"=>q<="1111";
when"1100"=>q<="0111";
when"1101"=>q<="1011";
when"1110"=>q<="1101";
when"1111"=>q<="1110";
whenothers=>null;
endcase;
whenothers=>null;
endcase;
ifclk1'eventandclk1='1'then
si<=q（i）;i<=i+1;coi<='0';
ifi=31theni<=0;coi<='1';sel<=sel+'1';
endif;
rck<=notcoi;
endif;
endprocess;
sck<=clk1;
end;
时序仿真：
从上图看出，当clk1在第32个上升沿rck变为低电频，sck与clk1是同一电频，故此程序满足要求。
3、汉字的滚动和动画显示（如：
黄小红+笑脸）：
libraryieee;
useieee.std_logic_1164.all;
useieee.std_logic_unsigned.all;
entityxianshiis
port（clk1:
instd_logic;
clk2:
instd_logic;
rck,sck:
outstd_logic;
si:
outstd_logic）;
end;
architectureoneofxianshiis
signallie:
std_logic_vector（3downto0）;
signalsel:
std_logic_vector（3downto0）;
signalq:
std_logic_vector（31downto0）;
signali:
integerrange0to31;
signalcoi:
std_logic;
begin
process（sel,clk1,clk2）
begin
ifclk2'eventandclk2='1'then
lie<=lie+'1';
endif;
caselieis
when"0000"=>
caseselis
when"0000"=>q<="1111";
when"0001"=>q<="1111";
when"0010"=>q<="1111";
when"0011"=>q<="1111";
when"0100"=>q<="1111";
when"0101"=>q<="1111";
when"0110"=>q<="1111";
when"0111"=>q<="1111";
when"1000"=>q<="1111";
when"1001"=>q<="1111";
when"1010"=>q<="1111";
when"1011"=>q<="1111";
when"1100"=>q<="0111";
when"1101"=>q<="1011";
when"1110"=>q<="1101";
when"1111"=>q<="1110";
whenothers=>null;
endcase;
when"0001"=>
caseselis
when"0000"=>q<="1111";
when"0001"=>q<="1111";
when"0010"=>q<="1111";
when"0011"=>q<="1111";
when"0100"=>q<="1111";
when"0101"=>q<="1111";
when"0110"=>q<="1111";
when"0111"=>q<="1111";
when"1000"=>q<="1111";
when"1001"=>q<="0111";
when"1010"=>q<="1011";
when"1011"=>q<="1101";
when"1100"=>q<="1110";
when"1101"=>q<="1111";
when"1110"=>q<="1111";
when"1111"=>q<="1111";
whenothers=>null;
endcase;
when"0010"=>
caseselis
when"0000"=>q<="1111";
when"0001"=>q<="1111";
when"0010"=>q<="1111";
when"0011"=>q<="1111";
when"0100"=>q<="1111";
when"0101"=>q<="1111";
when"0110"=>q<="0111";
when"0111"=>q<="1011";
when"1000"=>q<="1101";
when"1001"=>q<="1110";
when"1010"=>q<="1111";
when"1011"=>q<="1111";
when"1100"=>q<="1111";
when"1101"=>q<="1111";
when"1110"=>q<="1111";
when"1111"=>q<="1111";
whenothers=>null;
endcase;
when"0011"=>
caseselis
when"0000"=>q<="1111";
when"0001"=>q<="1111";
when"0010"=>q<="1111";
when"0011"=>q<="0111";
when"0100"=>q<="1011";
when"0101"=>q<="1101";
when"0110"=>q<="1110";
when"0111"=>q<="1111";
when"1000"=>q<="1111";
when"1001"=>q<="1111";
when"1010"=>q<="1111";
when"1011"=>q<="1111";
when"1100"=>q<="1111";
when"1101"=>q<="1111";
when"1110"=>q<="1111";
when"1111"=>q<="1111";
whenothers=>null;
endcase;
when"0100"=>
caseselis
when"0000"=>q<="0111";
when"0001"=>q<="1011";
when"0010"=>q<="1101";
when"0011"=>q<="1110";
when"0100"=>q<="1111";
when"0101"=>q<="1111";
when"0110"=>q<="1111";
when"0111"=>q<="1111";
when"1000"=>q<="1111";
when"1001"=>q<="1111";
when"1010"=>q<="1111";
when"1011"=>q<="1111";
when"1100"=>q<="1111";
when"1101"=>q<="1111";
when"1110"=>q<="1111";
when"1111"=>q<="1111";
whenothers=>null;
endcase;
when"0101"=>
caseselis
when"0000"=>q<="1110";
when"0001"=>q<="1111";
when"0010"=>q<="1111";
when"0011"=>q<="1111";
when"0100"=>q<="1111";
when"0101"=>q<="1111";
when"0110"=>q<="1111";
when"0111"=>q<="1111";
when"1000"=>q<="1111";
when"1001"=>q<="1111";
when"1010"=>q<="1111";
when"1011"=>q<="1111";
when"1100"=>q<="1111";
when"1101"=>q<="0111";
when"1110"=>q<="1011";
when"1111"=>q<="1101";
whenothers=>null;
endcase;
when"0110"=>
caseselis
when"0000"=>q<="1111";
when"0010"=>q<="1111";
when"0011"=>q<="1111";
when"0100"=>q<="1111";
when"0101"=>q<="1111";
when"0110"=>q<="1111";
when"0111"=>q<="1111";
when"1000"=>q<="1111";
when"1001"=>q<="1111";
when"1010"=>q<="1111";
when"1011"=>q<="0111";
when"1100"=>q<="1011";
when"1101"=>q<="1101";
when"1110"=>q<="1110";
when"1111"=>q<="1111";
whenothers=>null;
endcase;
when"0111"=>
caseselis
when"0000"=>q<="1111";
when"0001"=>q<="1111";
when"0010"=>q<="1111";
when"0011"=>q<="1111";
when"0100"=>q<="1111";
when"0101"=>q<="1111";
when"0110"=>q<="1111";
when"0111"=>q<="0111";
when"1000"=>q<="1011";
when"1001"=>q<="1101";
when"1010"=>q<="1110";
when"1011"=>q<="1111";
when"1100"=>q<="1111";
when"1101"=>q<="1111";
when"1110"=>q<="1111";
when"1111"=>q<="1111";
whenothers=>null;
endcase;
when"1000"=>
caseselis
when"0000"=>q<="1111";
when"0001"=>q<="1111";
when"0010"=>q<="1111";
when"0011"=>q<="1111";
when"0100"=>q<="0111";
when"0101"=>q<="1011";
when"0110"=>q<="1101";
when"0111"=>q<="1110";
when"1000"=>q<="1111";
when"1001"=>q<="1111";
when"1010"=>q<="1111";
when"1011"=>q<="1111";
when"1100"=>q<="1111";
when"1101"=>q<="1111";
when"1110"=>q<="1111";
when"1111"=>q<="1111";
whenothers=>null;
endcase;
when"1001"=>
caseselis
when"0000"=>q<="1111";
when"0001"=>q<="0111";
when"0010"=>q<="1011";
when"0011"=>q<="1101";
when"0100"=>q<="1110";
when"0101"=>q<="1111";
when"0110"=>q<="1111";
when"0111"=>q<="1111";
when"1000"=>q<="1111";
when"1001"=>q<="1111";
when"1010"=>q<="1111";
when"1011"=>q<="1111";
when"1100"=>q<="1111";
when"1101"=>q<="1111";
when"1110"=>q<="1111";
when"1111"=>q<="1111";
whenothers=>null;
endcase;
when"1010"=>
caseselis
when"0000"=>q<="1101";
when"0001"=>q<="1110";
when"0010"=>q<="1111";
when"0011"=>q<="1111";
when"0100"=>q<="1111";
when"0101"=>q<="1111";
when"0110"=>q<="1111";
when"0111"=>q<="1111";
when"1000"=>q<="1111";
when"1001"=>q<="1111";
when"1010"=>q<="1111";
when"1011"=>q<="1111";
when"1100"=>q<="1111";
when"1101"=>q<="1111";
when"1110"=>q<="0111";
when"1111"=>q<="1011";
whenothers=>null;
endcase;
when"1011"=>
caseselis
when"0000"=>q<="1111";
when"0001"=>q<="1111";
when"0010"=>q<="1111";
when"0011"=>q<="1111";
when"0100"=>q<="1111";
when"0101"=>q<="1111";
when"0110"=>q<="1111";
when"0111"=>q<="1111";
when"1000"=>q<="1111";
when"1001"=>q<="1111";
when"1010"=>q<="1111";
when"1011"=>q<="0111";
when"1100"=>q<="1011";
when"1101"=>q<="1101";
when"1110"=>q<="1110";
when"1111"=>q<="1111";
whenothers=>null;
endcase;
when"1100"=>
caseselis
when"0000"=>q<="1111";
when"0001"=>q<="1111";
when"0010"=>q<="1111";
when"0011"=>q<="1111";
when"0100"=>q<="1111";
when"0101"=>q<="1111";
when"0110"=>q<="1111";
when"0111"=>q<="1111";
when"1000"=>q<="1111";
when"1001"=>q<="1111";
when"1010"=>q<="1111";
when"1011"=>q<="1111";
when"1100"=>q<="0111";
when"1101"=>q<="1011";
when"1110"=>q<="1101";
when"1111"=>q<="1110";
whenothers=>null;
endcase;
when"1101"=>
caseselis
when"0000"=>q<="1111";
when"0001"=>q<="1111";
when"0010"=>q<="1111";
when
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