纯小白在写作业，可是map过不去？报错啊。。。求助！！！

只看该作者 · 2012-12-23 23:29

写期末作业，很简单的键盘译码。但是在map中过不去，貌似是键盘扫描程序有问题。贴在下面了，下面还有report，问题简单，大家不要笑，麻烦指出错误，谢谢！！！为什么被删了那么多信号呢？report中。
C:\Users\lenovo\Desktop\2012-12-23 21-46-12.jpg--------------------------------------------------------------------------------
-- Company:
-- Engineer:
--
-- Create Date: 21:07:34 12/22/12
-- Design Name:
-- Module Name: key_scan - Behavioral
-- Project Name:
-- Target Device:
-- Tool versions:
-- Description:
--
-- Dependencies:
--
-- Revision:
-- Revision 0.01 - File Created
-- Additional Comments:
--
--------------------------------------------------------------------------------
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.STD_LOGIC_ARITH.ALL;
use IEEE.STD_LOGIC_UNSIGNED.ALL;

---- Uncomment the following library declaration if instantiating
---- any Xilinx primitives in this code.
--library UNISIM;
--use UNISIM.VComponents.all;

ENTITY KEY_SCAN IS
PORT (
      clk    : IN    std_logic:='0';
      row    : IN    std_logic_vector(3 DOWNTO 0):="1111"; -- 键盘行向量
      press : OUT    std_logic:='0';
      column : BUFFER  std_logic_vector(3 DOWNTO 0);  -- 输出列向量
      code    : BUFFER  std_logic_vector(3 DOWNTO 0):="ZZZZ"  -- 键盘编码0~f
      );
END KEY_SCAN;

ARCHITECTURE Behavioral OF KEY_SCAN IS
SIGNAL clk_scan    :  std_logic;
SIGNAL code_old    :  std_logic_vector(3 DOWNTO 0):="ZZZZ";
SIGNAL cnt_key    :  integer range 1 to 8;

BEGIN

  process(clk)
  variable tt: integer:=0;
begin
tt:=tt+1;
if(tt=9) then tt:=1; end if;
cnt_key<=tt;
end process;

  --scan clock =0.25clk
  process(clk,cnt_key)
  begin
if(cnt_key<5)then
clk_scan<='1';
else
clk_scan<='0';
end if;
end process;

--scan keyboard
process(clk_scan)
variable t: integer:=0;
begin
if(clk_scan'EVENT and clk_scan='1')then
case t is
when 0=>column<="1110";
when 1=>column<="1101";
when 2=>column<="1011";
when 3=>column<="0111";
when others=>null;
end case;
t:=t+1;
if(t=4) then t:=0; end if;
end if;
end process;

--keyboard code output
process(clk)
begin
if(cnt_key>1 and cnt_key<5)then
      case column is
         when "1110" =>
                  case row is
                     when "1110" =>code<= "0000";
                     when "1101" =>code<= "0001";
                     when "1011" =>code<= "0010";
                     when "0111" =>code<= "0011";
                     when OTHERS =>code<= "ZZZZ";
                  end case;
         when "1101" =>
                  case row is
                     when "1110" =>code<= "0100";
                     when "1101" =>code<= "0101";
                     when "1011" =>code<= "0110";
                     when "0111" =>code<= "0111";
                     when OTHERS =>code<= "ZZZZ";
                  end case;
         when "1011" =>
                  case row is
                     when "1110" =>code<= "1000";
                     when "1101" =>code<= "1001";
                     when "1011" =>code<= "1010";
                     when "0111" =>code<= "1011";
                     when OTHERS =>code<= "ZZZZ";
                  end case;
         when "0111" =>
                  case row is
                     when "1110" =>code<= "1100";
                     when "1101" =>code<= "1101";
                     when "1011" =>code<= "1110";
                     when "0111" =>code<= "1111";
                     when OTHERS =>code<= "ZZZZ";
                  end case;
         when OTHERS =>code<= "ZZZZ";
   end case;
   else
   code<= "ZZZZ";
   end if;
   if(cnt_key=4) then
   code_old<=code;
   end if;
end process;

--key press signal output
process(clk)
begin
      if(code_old/=code and code/="ZZZZ") then
   if(cnt_key=3) then
         press<='1';
else
         press<='0';
      end if;
   else
         press<='0';
   end if;
end process;

END Behavioral;

这是report。。。。

Number of errors :  14
Number of warnings : 1

Section 1 - Errors
------------------
ERROR:MapLib:661 - LUT3 symbol "XLXI_4/_n0046131" (output signal=CHOICE875) has
input signal "XLXI_4/_n0034" which will be trimmed. See the trim report for
details about why the input signal will become undriven.
省略
Section 2 - Warnings
--------------------
WARNING:LIT:243 - Logical network XLXN_2 has no load.

Section 3 - Informational
-------------------------
INFO:MapLib:562 - No environment variables are currently set.

Section 4 - Removed Logic Summary
---------------------------------
363 signal(s) removed
  95 Block(s) redundant

Section 5 - Removed Logic
-------------------------

The trimmed logic reported below is either:
1. part of a cycle
2. part of disabled logic
3. a side-effect of other trimmed logic

The signal "XLXI_4/t<1>" is unused and has been removed.
The signal "XLXI_4/code_old<2>" is unused and has been removed.
The signal "XLXI_4/code_old<0>" is unused and has been removed.
The signal "XLXI_4/key_scan__n0007<4>_cyo" is unused and has been removed.
The signal "XLXI_4/code_old<1>" is unused and has been removed.
The signal "XLXI_4/code_old<3>" is unused and has been removed.
The signal "XLXI_4/_n0003" is unused and has been removed.
The signal "XLXI_4/_n0004" is unused and has been removed.
The signal "XLXI_4/t<0>" is unused and has been removed.
省略

只看该作者 · 2012-12-24 00:05

引脚分配错误啊

只看该作者 · 2012-12-24 00:10

哦，请问怎么改啊？求进一步指点。之前都没有模过。。。。。。

只看该作者 · 2012-12-24 00:11

shiyinjita 发表于 2012-12-24 00:05
引脚分配错误啊

？？？求指点。

只看该作者 · 2012-12-24 00:15

你的UCF文件中的引脚位置有可能约束错误

只看该作者 · 2012-12-24 00:21

zjj20081050 发表于 2012-12-24 00:11
？？？求指点。

我下了啊，太困了

只看该作者 · 2012-12-24 00:33

恩恩，晚安了！

1万 · 2012-12-24 17:49

帮你顶一个希望有人能够耐心的看下去哦呵呵

1万 · 2012-12-24 17:50

个人觉得在引脚定义上比较乱你自己在看看别人的意见哦呵呵

只看该作者 · 2012-12-24 19:39

hawksabre 发表于 2012-12-24 17:50
个人觉得在引脚定义上比较乱你自己在看看别人的意见哦呵呵

谢谢了！

1万 · 2012-12-24 20:29

你有UCF文件么？

只看该作者 · 2012-12-24 21:29

GoldSunMonkey 发表于 2012-12-24 20:29
你有UCF文件么？

有的，能传吗？

只看该作者 · 2012-12-24 21:30

GoldSunMonkey 发表于 2012-12-24 20:29
你有UCF文件么？

恩，请看。

复制

#PACE: Start of Constraints generated by PACE



#PACE: Start of PACE I/O Pin Assignments

NET "Clock20MHZ"  LOC = "p185"  ; 

NET "colum<0>"  LOC = "p192"  ; 

NET "colum<1>"  LOC = "p193"  ; 

NET "colum<2>"  LOC = "p194"  ; 

NET "colum<3>"  LOC = "p195"  ; 

NET "DispSelect<0>"  LOC = "p141"  ; 

NET "DispSelect<1>"  LOC = "p142"  ; 

NET "DispSelect<2>"  LOC = "p146"  ; 

NET "DispSelect<3>"  LOC = "p147"  ; 

NET "DispSelect<4>"  LOC = "p148"  ; 

NET "DispSelect<5>"  LOC = "p149"  ; 

NET "DispSelect<6>"  LOC = "p150"  ; 

NET "DispSelect<7>"  LOC = "p151"  ; 

NET "LEDCode<0>"  LOC = "p132"  ; 

NET "LEDCode<1>"  LOC = "p133"  ; 

NET "LEDCode<2>"  LOC = "p134"  ; 

NET "LEDCode<3>"  LOC = "p135"  ; 

NET "LEDCode<4>"  LOC = "p136"  ; 

NET "LEDCode<5>"  LOC = "p138"  ; 

NET "LEDCode<6>"  LOC = "p139"  ; 

NET "LEDCode<7>"  LOC = "p140"  ; 

NET "row<0>"  LOC = "p187"  ; 

NET "row<1>"  LOC = "p188"  ; 

NET "row<2>"  LOC = "p189"  ; 

NET "row<3>"  LOC = "p191"  ; 



#PACE: Start of PACE Area Constraints



#PACE: Start of PACE Prohibit Constraints

只看该作者 · 2012-12-24 21:31

有的，请看啊。

复制

#PACE: Start of Constraints generated by PACE



#PACE: Start of PACE I/O Pin Assignments

NET "Clock20MHZ"  LOC = "p185"  ; 

NET "colum<0>"  LOC = "p192"  ; 

NET "colum<1>"  LOC = "p193"  ; 

NET "colum<2>"  LOC = "p194"  ; 

NET "colum<3>"  LOC = "p195"  ; 

NET "DispSelect<0>"  LOC = "p141"  ; 

NET "DispSelect<1>"  LOC = "p142"  ; 

NET "DispSelect<2>"  LOC = "p146"  ; 

NET "DispSelect<3>"  LOC = "p147"  ; 

NET "DispSelect<4>"  LOC = "p148"  ; 

NET "DispSelect<5>"  LOC = "p149"  ; 

NET "DispSelect<6>"  LOC = "p150"  ; 

NET "DispSelect<7>"  LOC = "p151"  ; 

NET "LEDCode<0>"  LOC = "p132"  ; 

NET "LEDCode<1>"  LOC = "p133"  ; 

NET "LEDCode<2>"  LOC = "p134"  ; 

NET "LEDCode<3>"  LOC = "p135"  ; 

NET "LEDCode<4>"  LOC = "p136"  ; 

NET "LEDCode<5>"  LOC = "p138"  ; 

NET "LEDCode<6>"  LOC = "p139"  ; 

NET "LEDCode<7>"  LOC = "p140"  ; 

NET "row<0>"  LOC = "p187"  ; 

NET "row<1>"  LOC = "p188"  ; 

NET "row<2>"  LOC = "p189"  ; 

NET "row<3>"  LOC = "p191"  ; 



#PACE: Start of PACE Area Constraints



#PACE: Start of PACE Prohibit Constraints

只看该作者 · 2012-12-24 21:33

你来发个附件嘛，这样看比较麻烦了

只看该作者 · 2012-12-24 21:34

还有器件型号，这些都没有说明啊

1万 · 2012-12-24 21:38

器件

只看该作者 · 2012-12-24 21:38

恩，好了。

只看该作者 · 2012-12-24 21:41

？？？那款啊？不清楚器件型号，怎么看啊

1万 · 2012-12-24 21:42

我让你给出器件的型号

纯小白在写作业，可是map过不去？报错啊。。。求助！！！

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