FPGA程序，不能正确输出，各位帮忙看下

只看该作者 · 2021-3-5 14:08

我编写了两个文件，配置了输出口，，LASER_PWM  始终输出不了波形，请问下，这个是什么原因呀？modesiem仿真是有波形输出的//////////////-------PWM.V 文件

`timescale 1 ns / 1 ps
module pwm(
input rsn,
input clk,
input [15:0]pwm_counter,
input [15:0]pwm_duty,
output pwm_out
);

//reg[15:0]pwm_counter;
//reg [15:0]pwm_duty;
reg [15:0]counter=16'd0;
reg pwm_out_r;
always@(posedge clk or negedge rsn)
//begin
if(!rsn)
begin
counter <= 16'd0;
end
else
begin
if(counter >= pwm_counter)counter <= 16'd0;
else counter <= counter + 1'd1;
end
// end

always@(posedge clk or negedge rsn)
if(!rsn)
begin
pwm_out_r <= 1'd0;
end
else if(counter>=pwm_duty)
pwm_out_r<=1'b0;
else
pwm_out_r<=1'b1;

//wire pwm_out;
assign pwm_out = pwm_out_r;//((counter > pwm_duty) ? 1'd0 : 1'd1);

endmodule

////// top_indepen.v             文件

//-------------------------Timescale----------------------------//
`timescale 1 ns / 1 ps
//--------------------FSMC_SIG---------------------//
module FSMC_INDEP(
FPGA_CLK, //鏉堟挸鍙嗛弶鑳祰閺呰埖灏烥PGA_CLK,25M
FPGA_LEDR,
FPGA_LEDG,
FPGA_LEDB,
WR, //FSMC閸愭瑤淇婇崣
RD, //FSMC鐠囪淇婇崣
CS0, //FSMC閻楀洭鈧
A, //FSMC閸︽澘**冮幀鑽ゅ殠
DB, //FSMC閺佺増宓侀幀鑽ゅ殠
NADV, //FSMC閻ㄥ嚞ADV

//LASER PWM
LASER_PWM,

//interpn_exti
Interp_ex,
testclk,
testclk_100,
testclk_50,
FPGA_KEY
);

input FPGA_KEY;
input FPGA_CLK,NADV;
input WR,RD,CS0;
inout [15:0]DB;
input [24:16]A;
output FPGA_LEDB,FPGA_LEDG,FPGA_LEDR;
assign FPGA_LEDR = 1'd1;
assign FPGA_LEDG = 1'd0;
assign FPGA_LEDB = 1'd1;
output LASER_PWM;
output  Interp_ex,testclk,testclk_100,testclk_50;

//-------------------------MY_PLL-------------------------------//
wire PLL_100M;
wire PLL_8M;
wire PLL_50M;
wire PLL_12_5M;

reg LaserCtrl1;
reg [15:0] dbPower1;//閸旂喓宸閸楃姷鈹栧В
reg [15:0]dbQFreq1;//妫版垹宸

reg [15:0]counter;

initial
begin
dbQFreq1 <= 16'd106;
dbPower1 <= 16'd53;
LaserCtrl1 <= 1'd1;
end

MY_PLL U1(
.inclk0(FPGA_CLK),
.c0(PLL_100M),
.c1(PLL_50M),
.c2(PLL_8M),
.c3(PLL_12_5M)
);//
//------------------------RST_Ctrl-----------------------------//
wire RST_n;
RST_Ctrl U2(
.FPGA_CLK(FPGA_CLK),
.RST_n(RST_n)
); //娓氬瀵睷ST_Ctrl濡€虫健,鏉堟挸鍤崗銊ョ湰婢跺秳缍呮穱鈥冲娇RST_n

pwm  U5(
.rsn(RST_n),
.clk(PLL_8M),
.pwm_counter(dbQFreq1),
.pwm_duty(dbPower1),//閸旂喓宸
.pwm_out(LASER_PWM)
);

endmodule