PWM波生成器设计VHDL代码ISE仿真

名称：PWM波生成器设计VHDL代码ISE仿真

软件：ISE

语言：VHDL

代码功能：

PWM波生成器

1、可以控制PWM波的高电平时间参数

2、可以以10KHz频率更新参数

FPGA代码Verilog/VHDL代码资源下载：www.hdlcode.com

演示视频：

设计文档：

1.?工程文件

2.?程序文件

3.?程序编译

4.?Testbench

5.?仿真图

部分代码展示:

LIBRARY?ieee;
???USE?ieee.std_logic_1164.all;
ENTITY?tb_pwm_ctrl?IS
END?tb_pwm_ctrl;
ARCHITECTURE?behaveral?OF?tb_pwm_ctrl?IS
???COMPONENT?pwm_ctrl?IS
??????PORT?(
?????????clk_50m?:?IN?STD_LOGIC;
?????????rstn?:?IN?STD_LOGIC;
?????????ctrl_da?:?IN?STD_LOGIC_VECTOR(6?DOWNTO?0);
?????????update_10k?:?IN?STD_LOGIC;
?????????pwm_out?:?OUT?STD_LOGIC
??????);
???END?COMPONENT;
???
???
???SIGNAL?clk_50m????:?STD_LOGIC;
???SIGNAL?rstn???????:?STD_LOGIC;
???SIGNAL?ctrl_da????:?STD_LOGIC_VECTOR(6?DOWNTO?0);
???SIGNAL?update_10k?:?STD_LOGIC;
???
???SIGNAL?pwm_out????:?STD_LOGIC;
BEGIN
???
???
???
???uut?:?pwm_ctrl
??????PORT?MAP?(
?????????clk_50m?????=>?clk_50m,
?????????rstn????????=>?rstn,
?????????ctrl_da?????=>?ctrl_da,
?????????update_10k??=>?update_10k,
?????????pwm_out?????=>?pwm_out
??????);
???
???PROCESS?
???BEGIN
??????rstn?<=?'0';--复位
??????ctrl_da?<=?"0000000";
??????update_10k?<=?'0';
??????
??????WAIT?FOR?100?ns;
??????rstn?<=?'1';
??????WAIT?FOR?500?ns;
??????ctrl_da?<=?"0110010";--50
??????update_10k?<=?'1';--
??????WAIT?FOR?20?ns;
??????update_10k?<=?'0';
??????
??????WAIT?FOR?300000?ns;
??????ctrl_da?<=?"0100100";--36
??????update_10k?<=?'1';
??????WAIT?FOR?20?ns;
??????update_10k?<=?'0';
??????
??????WAIT?FOR?300000?ns;
??????ctrl_da?<=?"1000100";--68
??????update_10k?<=?'1';
??????WAIT?FOR?20?ns;
??????update_10k?<=?'0';
??????
??????WAIT?FOR?300000?ns;
??????ctrl_da?<=?"0011001";--25
??????update_10k?<=?'1';
??????WAIT?FOR?20?ns;
??????update_10k?<=?'0';
??????
??????WAIT?FOR?300000?ns;
??????ctrl_da?<=?"1010000";--80
??????update_10k?<=?'1';
??????WAIT?FOR?20?ns;
??????update_10k?<=?'0';
??????WAIT;
???END?PROCESS;

点击链接获取代码文件：http://www.hdlcode.com/index.php?m=home&c=View&a=index&aid=1149