（1）Verilog 代码：
module adc_collect(input clk ,input reset_n ,input [7:0] adc_data ,output clk_adc );wire clk_adc_a ;wire clk_adc_turn ;wire locked ;wire [31:0] n_volt ;wire [31:0] p_volt ;wire [31:0] data_n ;wire [31:0] data_p ;reg [10:0] ad_cnt ;reg [19:0] sum_ad ;reg [27:0] adc_mid ;reg [31:0] volt_n ;reg [31:0] volt_p ;assign clk_adc = clk_adc_a ; pll_20M pll_20M_inst
(.clk_adc(clk_adc_a), // output clk_adc.clk_adc_turn(clk_adc_turn), // output clk_adc_turn.resetn(reset_n), // input resetn.locked(locked), // output locked.clk(clk) // input clk
); ila_volt ila_volt_inst
(.clk(clk), // input wire clk.probe0(n_volt), // input wire [31:0] probe0 .probe1(p_volt) // input wire [31:0] probe1
);//adc累加计数器
always@(posedge clk_adc_turn or negedge locked)if(!locked) ad_cnt <= 11'd0;else if(ad_cnt == 11'd1025)ad_cnt <= 11'd1025;else ad_cnt <= ad_cnt + 11'd1;//adc前1024个数据累加
always@(posedge clk_adc_turn or negedge locked)if(!locked)sum_ad <= 20'd0;else if(ad_cnt <= 11'd1024)sum_ad <= sum_ad + adc_data;else sum_ad <= sum_ad;//adc中值计算
always@(posedge clk_adc_turn or negedge locked)if(!locked)adc_mid <= 28'd0;else if(ad_cnt == 11'd1024)adc_mid <= sum_ad >> 10;else if(ad_cnt == 11'd1025)adc_mid <= adc_mid;else adc_mid <= 28'd0;//精度定义 显示数据为4位数，其中第一位为个位，后三位为十分位，百分位，千分位。 40960_000 = 5* 2^13 * 1000assign data_n = (ad_cnt == 11'd1025)? 40960_000/(adc_mid + 1) : 0;assign data_p = (ad_cnt == 11'd1025)? 40960_000/(256 - adc_mid) : 0; //电压计算
always@(posedge clk_adc_turn or negedge locked)if(!locked)volt_n <= 32'd0;else if((ad_cnt == 11'd1025) && (adc_data < adc_mid))volt_n <= (data_n * (adc_mid - adc_data)) >> 13;else volt_n <= 32'd0;always@(posedge clk_adc_turn or negedge locked)if(!locked)volt_p <= 32'd0;else if((ad_cnt == 11'd1025) && (adc_data >= adc_mid))volt_p <= (data_n * (adc_data - adc_mid)) >> 13;else volt_p <= 32'd0; //传入ILAassign n_volt = volt_n;assign p_volt = volt_p;endmodule
（2）仿真文件：
`timescale 1ns / 1psmodule adc_collect_tb;reg clk ;
reg clk_sample ;
reg reset_n ;
reg [7:0] adc_data ;
reg [7:0] data_reg ;
reg data_en ;wire clk_adc ;initial clk = 1'd1;
always #10 clk = ~clk;initial clk_sample = 1'd1;
always #25 clk_sample = ~clk_sample;initial beginreset_n <= 1'd0;#25;reset_n <= 1'd1;#200; data_en <= 1'd0;#2000000;data_en <= 1'd1; #2000000;$stop;
endalways@(posedge clk_sample or negedge reset_n)if(!reset_n)data_reg <= 8'd0;else if(data_en)data_reg <= data_reg + 8'd1;else data_reg <= 8'd0;always@(posedge clk_sample or negedge reset_n)if(!reset_n)adc_data <= 8'd0;else if(!data_en)adc_data <= 8'd125;else adc_data <= data_reg ;adc_collect adc_collect_inst(.clk (clk),.reset_n (reset_n),.adc_data (adc_data),.clk_adc (clk_adc));endmodule
（3）仿真波形（仿真前先把ILA注释掉）：
- 整体波形图：
- PLL时钟波形图：
- 求中值中，累加计数器和中间值的计算：
- 后续dac数据的赋值以及精度的波形：
- 数值波形：
（4）XDC文件：
set_property IOSTANDARD LVCMOS33 [get_ports {adc_data[1]}]
set_property IOSTANDARD LVCMOS33 [get_ports {adc_data[6]}]
set_property IOSTANDARD LVCMOS33 [get_ports clk_adc]
set_property IOSTANDARD LVCMOS33 [get_ports {adc_data[0]}]
set_property IOSTANDARD LVCMOS33 [get_ports {adc_data[7]}]
set_property IOSTANDARD LVCMOS33 [get_ports {adc_data[4]}]
set_property IOSTANDARD LVCMOS33 [get_ports reset_n]
set_property IOSTANDARD LVCMOS33 [get_ports {adc_data[3]}]
set_property IOSTANDARD LVCMOS33 [get_ports clk]
set_property IOSTANDARD LVCMOS33 [get_ports {adc_data[5]}]
set_property IOSTANDARD LVCMOS33 [get_ports {adc_data[2]}]
set_property PACKAGE_PIN W19 [get_ports clk]
set_property PACKAGE_PIN N15 [get_ports reset_n]
set_property PACKAGE_PIN L13 [get_ports {adc_data[0]}]
set_property PACKAGE_PIN M13 [get_ports {adc_data[1]}]
set_property PACKAGE_PIN M16 [get_ports {adc_data[2]}]
set_property PACKAGE_PIN M15 [get_ports {adc_data[3]}]
set_property PACKAGE_PIN M20 [get_ports {adc_data[4]}]
set_property PACKAGE_PIN N20 [get_ports {adc_data[5]}]
set_property PACKAGE_PIN M22 [get_ports {adc_data[6]}]
set_property PACKAGE_PIN N22 [get_ports {adc_data[7]}]
set_property PACKAGE_PIN L14 [get_ports clk_adc]
（5)实验现象：
编译遇到报错：
解决方法：
未接线，0v时，ILA波形：
-2.3v时，ILA波形：
-1.5v时，ILA波形：
0.5v时，ILA波形：
2.7v时，ILA波形：
3.75v时，ILA波形：
4.85v时，ILA波形：
