[求助]modelsim仿真时出现warning,不出波形
# add wave *
# view structure
# .main_pane.structure.interior.cs.body.struct
# view signals
# .main_pane.objects.interior.cs.body.tree
# run -all
# ** Warning: There is an 'U'|'X'|'W'|'Z'|'-' in an arithmetic operand, the result will be 'X'(es).
# Time: 0 ps Iteration: 0 Instance: /svpwm_1_vhd_tst/i1/b2v_inst9
# ** Warning: CONV_INTEGER: There is an 'U'|'X'|'W'|'Z'|'-' in an arithmetic operand, and it has been converted to 0.
# Time: 0 ps Iteration: 0 Instance: /svpwm_1_vhd_tst/i1/b2v_inst9
# ** Warning: There is an 'U'|'X'|'W'|'Z'|'-' in an arithmetic operand, the result will be 'X'(es).
# Time: 0 ps Iteration: 0 Instance: /svpwm_1_vhd_tst/i1/b2v_inst9
# ** Warning: CONV_INTEGER: There is an 'U'|'X'|'W'|'Z'|'-' in an arithmetic operand, and it has been converted to 0.
# Time: 0 ps Iteration: 0 Instance: /svpwm_1_vhd_tst/i1/b2v_inst9
# ** Warning: There is an 'U'|'X'|'W'|'Z'|'-' in an arithmetic operand, the result will be 'X'(es).
# Time: 0 ps Iteration: 0 Instance: /svpwm_1_vhd_tst/i1/b2v_inst9
# ** Warning: CONV_INTEGER: There is an 'U'|'X'|'W'|'Z'|'-' in an arithmetic operand, and it has been converted to 0.
# Time: 0 ps Iteration: 0 Instance: /svpwm_1_vhd_tst/i1/b2v_inst9
# ** Warning: There is an 'U'|'X'|'W'|'Z'|'-' in an arithmetic operand, the result will be 'X'(es).
# Time: 0 ps Iteration: 0 Instance: /svpwm_1_vhd_tst/i1/b2v_inst8
# ** Warning: CONV_INTEGER: There is an 'U'|'X'|'W'|'Z'|'-' in an arithmetic operand, and it has been converted to 0.
# Time: 0 ps Iteration: 0 Instance: /svpwm_1_vhd_tst/i1/b2v_inst8
# ** Warning: There is an 'U'|'X'|'W'|'Z'|'-' in an arithmetic operand, the result will be 'X'(es).
# Time: 0 ps Iteration: 0 Instance: /svpwm_1_vhd_tst/i1/b2v_inst8
# ** Warning: CONV_INTEGER: There is an 'U'|'X'|'W'|'Z'|'-' in an arithmetic operand, and it has been converted to 0.
# Time: 0 ps Iteration: 0 Instance: /svpwm_1_vhd_tst/i1/b2v_inst8
# ** Warning: There is an 'U'|'X'|'W'|'Z'|'-' in an arithmetic operand, the result will be 'X'(es).
# Time: 0 ps Iteration: 0 Instance: /svpwm_1_vhd_tst/i1/b2v_inst8
# ** Warning: CONV_INTEGER: There is an 'U'|'X'|'W'|'Z'|'-' in an arithmetic operand, and it has been converted to 0.
# Time: 0 ps Iteration: 0 Instance: /svpwm_1_vhd_tst/i1/b2v_inst8
我已经赋过初值了,测试激励也写入了,但会跳出这些,下面是我第八第九模块VHDL源程序。
求教,网上找了很多,也改了好多次,都不行。
这里两个模块的输入主要是三相正弦电压用八位二进制表示来输入,我怀疑应该是出错在我把Uab,Ubc,Uca从std_logic_vector转换成INTEGER时,语句不对或者格式不对。
求大神指点!
================第八模块:矢量作用时间==================
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.STD_LOGIC_ARITH.ALL;
use IEEE.STD_LOGIC_UNSIGNED.ALL;
entity vector_time is
Port(Ts: in INTEGER;
Ud: in INTEGER;
Uab: in std_logic_vector(7 downto 0);
Ubc: in std_logic_vector(7 downto 0);
Uca: in std_logic_vector(7 downto 0);
N:in INTEGER;
Tx: out INTEGER;
Ty: out INTEGER);
end vector_time;
architecture Behavioral of vector_time is
signal x, y : INTEGER:=0;
signal ab,bc,ca: INTEGER range 0 to 255;
begin
ab <= conv_integer(Uab);
bc <= conv_integer(Ubc);
ca <= conv_integer(Uca);
process(ab,bc,ca,N)
begin
case N is
when 1=> x <=bc;y <=ab;
when 2=> x <=-ab;y <=-ca;
when 3=> x <=ca;y <=bc;
when 4=> x <=-bc;y <=-ab;
when 5=> x <=ab;y <=ca;
when 6=> x <=-ca;y <=-bc;
when others=> null;
end case;
end process;
Tx <= x*Ts/Ud;
Ty <= y*Ts/Ud;
end Behavioral;
==================第九模块:扇区判别===================
library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.STD_LOGIC_ARITH.ALL;
use IEEE.STD_LOGIC_UNSIGNED.ALL;
entity sector is
Port(Uab:in std_logic_vector(7 downto 0);
Ubc:in std_logic_vector(7 downto 0);
Uca:in std_logic_vector(7 downto 0);
N:out INTEGER );
end sector;
architecture Behavioral of sector is
signal x:STD_LOGIC_VECTOR(2 downto 0);
signal ab,bc,ca:INTEGER range 0 to 255;
begin
ab <= conv_integer(Uab);
bc <= conv_integer(Ubc);
ca <= conv_integer(Uca);
x(2) <='1' when ab > = 0 else'0';
x(1) <='1' when bc > = 0 else'0';
x(0) <='1' when ca > = 0 else'0';
process(x)
begin
case x is
when"110"=> N <=1;
when"010"=> N <=2;
when"011"=> N <=3;
when"001"=> N <=4;
when"101"=> N <=5;
when"100"=> N <=6;
when others=> null;
end case;
end process;
end Behavioral;
发表时间:2016年5月21日12:53:17