先将INTEGER根据需求使用 to_signed(interger,signed'length) 转为 SIGNED 或者使用 to_unsigned(integer,unsigned'length) 转为UNSIGNED,然后使用STD_LOGIC_VECTOR(signed/unsigned)转为整数。例:https://www.nandland.com/vhdl/examples/example-signed-unsigned.html ...
I try first to cast them to unsigned and cast after the result to std_logic or std_logic_vector. I use the ieee.numeric_std package because I read that using the ieee.std_logic_unsigned package could lead to errors (then, i do not use the conv_std_logic_ve...
在VHDL中,将integer类型转换为std_logic类型涉及几个步骤,因为std_logic是一个单比特的逻辑值,而integer可以是多比特的整数。为了将integer转换为std_logic,我们通常需要考虑integer的某一位(例如最低位)或者根据条件决定std_logic的值(例如,integer是否为0)。 以下是一个详细的步骤说明和示例代码,展示如何将integer转...
https://community.intel.com/t5/Programmable-Devices/VHDL-integer-to-std-logic-or-std-logic-vector-conversion/m-p/177328#M56780<description><P>Hello, </P><P></P>I've some issues to convert integer to std_logic or std_logic_vector. <P></P>I need to do so for a testben...
din <=std_logic_vector(to_signed(v_din,32));elsedin <= (others=>'0');endif;endif;endif;endprocess; 最初是这种写法出现问题的。 第二种写法 useieee.std_logic_textio.all;usestd.textio.all;useieee.std_logic_unsigned.all;useieee.std_logic_arith.all;--filefin :textopenread_modeis"file_...
later in the code I convert the integer to std_logic_vector; signal D_to_TX_int : std_logic_vector (15 downto 0); signal StartTX_int : std_logic_vector (0 downto 0); begin D_to_TX_int <= conv_std_logic_vector(D_to_TX,16); StartTX_int <= conv_std_logic_vector(Star...
所以,结论应该是:不管是range 0 to 10 或者range 0 to 15都和std_logic_vector(3 downto 0)...
4.本人做了这样的转换conv_std_logic_vector (conv_integer (data),16),data是16范围内的有符号数,但是接口是32位的标准矢量形式(std_logic_vector(31 downto 0)刚开始包括的是std_logic_unsigned 包,发现数据变得面目全非了,想来想去,认为conv_integer (data)的原因,就该了下包,结果就正确了。
conv_integer(变量) 转换回来是conv_std_logic_vector(变量,位数)
Conv_Integer()将SIGNED,UNSIGNED,STD_LOGIC,STD_LOGIC_VECTOR等类型强制转换成整数型 同理Conv_Std_Logic_Vector()是将整形传唤成STD_LOGIC_VECTOR 举个例子 将 STD_LOGIC_VECTOR 与INTEGER 互相转换 两个STD_LOGIC_VECTOR 做+运算 library IEEE;use IEEE.STD_LOGIC_1164.ALL;use IEEE.STD_LOGIC...