一起学习用Verilog在FPGA上实现CNN----(二)卷积层设计

╰半橙微兮° 2023-09-23 18:15 11阅读 0赞

# 1 打开Vivado工程 #

Vivado工程文件如图：

![在这里插入图片描述][1f920790ce1f4d8f8b3b01f3e621c1f8.png_pic_center]

打开Vivado软件，打开工程，如图：

![在这里插入图片描述][a0a2da061c8945b2aa038e09548a3d60.png_pic_center]

自动升级到当前版本，如图：

![在这里插入图片描述][8ac683edc0b64fdd9e494f77c9a1f422.png_pic_center]

暂时选择现有开发板的型号，如图：

![在这里插入图片描述][9e67dd136950451f8a1b6c2c3e5dc380.png_pic_center]

出现一条警告性信息，暂时先不管，点击OK：

![在这里插入图片描述][0aa3b1c87e3443be8f5b596e1dc985ee.png_pic_center]

可以看到完整的工程文件包含如下图：

![在这里插入图片描述][438918196faf4793b206a26bf0d97f8b.png_pic_center]

# 2 卷积层设计 #

自顶而下分析卷积层的设计过程

## 2.1 Multi Filter Layer ##

图为该项目的一个卷积层，其中包含了多个卷积核(Filter)，模块的输入为图像矩阵和卷积核设置参数，输出为卷积提取的特征矩阵

![在这里插入图片描述][ea4742d6a206442f81cefe1fa81b37bc.png_pic_center]  
`图片来自附带的技术文档《Hardware Documentation》`

卷积层的原理图如图所示，其中filters的位宽为2400，image的位宽是16384，该层卷积的输出位宽是75264

*  filters位宽计算：卷积核大小为5x5，卷积核个数为6，数据位宽为float16(16bits)，所以5x5x6x16=2400
 *  image位宽计算：手写数字图像大小为32x32，数据位宽为float16，所以32x32x16=16384
 *  outputConv位宽计算：28x28x6x16=75264，式中28x28表示卷积层输出特征矩阵的长和宽，6表示卷积核的数量，数据位宽是float16
 *  补充卷积输出特征尺寸计算：m=\[(n-k+2xp)/s\]+1，n表示输入图像或特征矩阵的尺寸，k表示卷积核的尺寸，s表示卷积核滑动的步长(stride)，p表示填充(padding)。例如，图像大小为32x32，卷积核大小为5x5，步长为1，m=\[(32-5+2x0)/1\]+1=28

![在这里插入图片描述][c957ec34679f44ae812502b8e125fbbc.png_pic_center]

## 2.2 Single Filter Layer ##

单个卷积核层的设计如图，输入为图像矩阵image和单个卷积核filter，输出卷积核处理的特征矩阵

![在这里插入图片描述][8d5cb12d23ec4395afa4b1772fb7c9bd.png_pic_center]  
`图片来自附带的技术文档《Hardware Documentation》`

原理图如图所示，filter的位宽为400，image的位宽是16384，输出位宽是12544

*  filters位宽计算：卷积核大小为5x5，卷积核个数为1，数据位宽为float16，所以5x5x1x16=400
 *  image位宽计算：手写数字图像大小为32x32，数据位宽为float16，所以32x32x16=16384
 *  outputConv位宽计算：28x28x1x16=12544，式中28x28表示卷积层输出特征矩阵的长和宽，1表示卷积核的数量，数据位宽是float16

![在这里插入图片描述][964ebd61a96e412dbf7227067150f5b1.png_pic_center]

## 2.3 Convolution Unit ##

卷积单元如图所示，输入为卷积核filter和卷积核窗口覆盖的图像image，计算输出该窗口提取的特征

![在这里插入图片描述][6cd35e94707e4ca785c8418cdf7e9752.png_pic_center]  
`图片来自附带的技术文档《Hardware Documentation》`

原理图如图所示，filter的位宽为400，卷积核窗口覆盖的图像image的位宽是400，输出位宽是16

*  filters位宽计算：卷积核大小为5x5，卷积核个数为1，数据位宽为float16，所以5x5x1x16=400
 *  image位宽计算：手写数字图像大小为32x32，卷积核窗口覆盖的图像大小为5x5，数据位宽为float16，所,5x5x16=400
 *  result位宽计算：输出结果为float16数据类型的数，具体计算见 **2.4 Processing Element** 章节

![在这里插入图片描述][c90e73a55b384187a3a1f71a7695fc38.png_pic_center]

## 2.4 Processing Element ##

卷积单元具体实现如图所示，即相乘相加操作。卷积计算具体操作就是点乘，本质就是乘法和加法。图中输入为float16类型数据A和B，输出float16数据类型的结果  
![在这里插入图片描述][b451af473f6d4e88b435c4df8daa9a8f.png_pic_center]  
`图片来自附带的技术文档《Hardware Documentation》`

原理图如图所示，可以看到输入floatA和floatB，以及输出result位宽均为16

![在这里插入图片描述][aeab69406298495f8edd4f6f48a4823b.png_pic_center]

# 3 模块功能解析 #

自底向上分析每个模块的功能和具体实现

## 3.1 Processing Element ##

如图所示Processing Element由FM(floatMult16)，FADD(floatAdd16)，result\_reg三个单元组成

*  FM(floatMult16)单元是执行两个float16数据的乘法
 *  FADD(floatAdd16)单元是执行两个float16数据的加法
 *  result\_reg寄存器，存放的是新的求和，将电路从组合逻辑转为同步时序电路，保证数据的同步  
    ![在这里插入图片描述][ea05f40f5dc3457d877b766fa2e13984.png_pic_center]

## 3.2 Convolution Unit ##

卷积单元完整的顶层原理图如图所示，对一个卷积核和该卷积核覆盖的图像区域(可以称为窗口)进行计算，输出一个计算结果(float16)

![在这里插入图片描述][901823a6ebe445cda7b68e8e0579fbf1.png_pic_center]

## 3.3 Single Filter Layer ##

Single Filter Layer原理图如图所示，由1个RF selector和14个CU组成，该部分是计算一个卷积核与一幅图像的卷积，输出卷积提取的完整图像的特征。

RF selector的作用：将卷积核覆盖的图像区域(可以称为窗口)的数据对应传输给14个CU，输入图像尺寸为32x32x16，卷积核大小为5x5x16，卷积核滑动步长为1，此时一幅完整图像将产生28x28个窗口数据，每个窗口数据为5x5x16。因为14个CU是并行计算的，故RF selector输出位宽为14x5x5x16=5600

为什么选择使用14个CU，作者给出的解释是：LUT的数量在单个或多个卷积核模块中呈指数增长，实验对比后，最终决定使用CU的数量等于输出特征中单行像素数量的一半。例如，输入图像32x32，卷积核5x5，输出特征为28x28，故CU的数量等于28/2=14

![在这里插入图片描述][33a1d46d8c4b4bcf977959b0e0315bea.png_pic_center]

## 3.4 Multi Filter Layer ##

Multi Filter Layer原理图如图所示，由2个convLayerSingle组成，即并行度为2。上述内容可知Multi Filter Layer的输入是图像和6个卷积核，因此6个卷积核分为2个一组，循环3次输入到convLayerSingle，即每次执行2个卷积核与图像的卷积

![在这里插入图片描述][febf5f2ed0044603a15cc916dc1efddc.png_pic_center]

# 4 代码实现 #

## 4.1 新建工程 ##

新建工程，操作如图所示：

![在这里插入图片描述][87d448ed73094b74abaa1f8ca7862d89.png_pic_center]

输入工程名字和工程路径，如图：

![在这里插入图片描述][3bb47cc466364edf986c4c819ab32d2b.png_pic_center]

选择创建RTL工程，如图：

![在这里插入图片描述][7c01446c703c433a90a5ff85669ea741.png_pic_center]

直接点击Next：

![在这里插入图片描述][02640008d4de420da64dff18a5440438.png_pic_center]

继续点击Next：

![在这里插入图片描述][8a1efd4edab849d8a813934373642b41.png_pic_center]

添加芯片型号，操作如图：

![在这里插入图片描述][2259568e8be24c4295b48bb7ed97eb84.png_pic_center]

完成创建：

![在这里插入图片描述][ecf2f51bbc7c4273acee66da0964278b.png_pic_center]

## 4.2 floatAdd16 ##

### 4.2.1 设计输入 ###

创建工程文件，操作如图：

![在这里插入图片描述][02143b11a0f046bf96b3caed78e0ab89.png_pic_center]

创建floatAdd16文件：

![在这里插入图片描述][59cea7d20e0141abb0a2dbeac90e8e68.png_pic_center]

创建完成：

![在这里插入图片描述][c9bf461c56ef488e9a75a77b3cef2259.png_pic_center]

双击打开，输入如下代码：

module floatAdd16 (floatA,floatB,sum);
    	
    input [15:0] floatA, floatB;  // 输入float16数据A和B
    output reg [15:0] sum;   // 输出为float16数据sum
    
    reg sign; // 输出的正负标志位
    reg signed [5:0] exponent; //输出数据的指数，有正负故选择有符号数
    reg [9:0] mantissa; //输出数据的尾数
    reg [4:0] exponentA, exponentB; //输出数据的阶数
    reg [10:0] fractionA, fractionB, fraction;	//fraction = {1,mantissa} 暂存位
    reg [7:0] shiftAmount;// 移位寄存器，计算加法时配平阶数
    reg cout;
    
    always @ (floatA or floatB) begin
    	exponentA = floatA[14:10];
    	exponentB = floatB[14:10];
    	fractionA = {
        1'b1,floatA[9:0]};
    	fractionB = {
        1'b1,floatB[9:0]}; 
    	
    	exponent = exponentA;
    
    	if (floatA == 0) begin						//special case (floatA = 0)
    		sum = floatB;
    	end else if (floatB == 0) begin					//special case (floatB = 0)
    		sum = floatA;
    	end else if (floatA[14:0] == floatB[14:0] && floatA[15]^floatB[15]==1'b1) begin //A与B互为相反数的情况
    		sum=0;
    	end else begin
    		if (exponentB > exponentA) begin   // 配平阶数，使得A和B在同一阶数
    			shiftAmount = exponentB - exponentA;
    			fractionA = fractionA >> (shiftAmount);
    			exponent = exponentB;
    		end else if (exponentA > exponentB) begin 
    			shiftAmount = exponentA - exponentB;
    			fractionB = fractionB >> (shiftAmount);
    			exponent = exponentA;
    		end
    		if (floatA[15] == floatB[15]) begin			//A与B同符号
    			{
        cout,fraction} = fractionA + fractionB;
    			if (cout == 1'b1) begin
    				{
        cout,fraction} = {
        cout,fraction} >> 1;
    				exponent = exponent + 1;
    			end
    			sign = floatA[15];
    		end else begin						//A与B符号不相同
    			if (floatA[15] == 1'b1) begin   // A为负数
    				{
        cout,fraction} = fractionB - fractionA;  // B-A 
    			end else begin
    				{
        cout,fraction} = fractionA - fractionB;  // A-B
    			end
    			sign = cout;
    			if (cout == 1'b1) begin
    				fraction = -fraction;  // 0-负数，求出该数的绝对值
    			end else begin
    			end
    			//对franction进行阶数配平，求出尾数
    			if (fraction [10] == 0) begin
    				if (fraction[9] == 1'b1) begin
    					fraction = fraction << 1;
    					exponent = exponent - 1;
    				end else if (fraction[8] == 1'b1) begin
    					fraction = fraction << 2;
    					exponent = exponent - 2;
    				end else if (fraction[7] == 1'b1) begin
    					fraction = fraction << 3;
    					exponent = exponent - 3;
    				end else if (fraction[6] == 1'b1) begin
    					fraction = fraction << 4;
    					exponent = exponent - 4;
    				end else if (fraction[5] == 1'b1) begin
    					fraction = fraction << 5;
    					exponent = exponent - 5;
    				end else if (fraction[4] == 1'b1) begin
    					fraction = fraction << 6;
    					exponent = exponent - 6;
    				end else if (fraction[3] == 1'b1) begin
    					fraction = fraction << 7;
    					exponent = exponent - 7;
    				end else if (fraction[2] == 1'b1) begin
    					fraction = fraction << 8;
    					exponent = exponent - 8;
    				end else if (fraction[1] == 1'b1) begin
    					fraction = fraction << 9;
    					exponent = exponent - 9;
    				end else if (fraction[0] == 1'b1) begin
    					fraction = fraction << 10;
    					exponent = exponent - 10;
    				end 
    			end
    		end
    		mantissa = fraction[9:0];
    		if(exponent[5]==1'b1) begin //exponent is negative
    			sum = 16'b0000000000000000;
    		end
    		else begin
    			sum = {
        sign,exponent[4:0],mantissa};//组合数据
    		end		
    	end		
    end
    
    endmodule

如图所示：

![在这里插入图片描述][2f4fa622c9f64dceacb8bff11793bfd6.png_pic_center]

### 4.2.2 分析与综合 ###

对设计进行分析，操作如图：

![在这里插入图片描述][f42ee82101be4442854093a0b2f4f5b9.png_pic_center]

分析后的设计，Vivado自动生成原理图，如图：

![在这里插入图片描述][5c2f7356cfb144d7867d0fe865125d9d.png_pic_center]

对设计进行综合，操作如图：

![在这里插入图片描述][e38349ec1d0b40598be29714b996470b.png_pic_center]

综合完成后，弹出窗口如下，直接关闭：

![在这里插入图片描述][fab06c6fab204303980ebb0b147b183c.png_pic_center]

### 4.2.3 功能仿真 ###

创建TestBench，操作如图所示：

![在这里插入图片描述][c7b946ce80934d65b846ede4e001e427.png_pic_center]

创建激励文件，输入文件名：

![在这里插入图片描述][d4f8ccba947646f9b321e02c6c22f6dc.png_pic_center]

创建完成：

![在这里插入图片描述][d20fbf9fa70b4d3b9691f7e9795102d2.png_pic_center]

双击打开，输入激励代码：

`timescale 100 ns / 10 ps
    
    module tb_floatAdd16();
    reg [15:0] floatA;
    reg [15:0] floatB;
    wire [15:0] sum;
    
    initial begin
    	
    	// A + B = 16'h3800 = 0.5
    	#0
    	floatA = 16'h34CD; // 0.3
    	floatB = 16'h3266; // 0.2
    
    	// A + B = 34CD
    	#10
    	floatA = 16'h34CD;
    	floatB = 16'h0000; // 0
    	#10
    	$stop;
    end
    
    floatAdd16 FADD
    (
    	.floatA(floatA),
    	.floatB(floatB),
    	.sum(sum)
    );
    
    endmodule

如图所示：

![在这里插入图片描述][83b7917dbb134c3ba93f5d02c0528b75.png_pic_center]

开始进行仿真，操作如下：

![在这里插入图片描述][0d9f1b99179149d89c2abc6818678a0f.png_pic_center]

仿真操作，如图：

![在这里插入图片描述][e222076a5de84a3fa98641746d876579.png_pic_center]

调整波形，进行观察：

![在这里插入图片描述][302d3be3c2ae441093c64cfa8ca32249.png_pic_center]

仿真波形如图：

![在这里插入图片描述][b766109f35b34195add8426dfd574dd3.png_pic_center]

关闭仿真：

![在这里插入图片描述][8b578428486d4709aeb40f82eb2c6a9d.png_pic_center]

点击OK：

![在这里插入图片描述][3dabbe5431424cbab2dd038aa297b54a.png_pic_center]

## 4.3 floatMult16 ##

### 4.3.1 设计输入 ###

创建floatMult16文件，如图：

![在这里插入图片描述][753698c4dfd244579682275df632c032.png_pic_center]

双击打开，输入如下代码：

module floatMult16 (floatA,floatB,product);
    
    input [15:0] floatA, floatB;  // 输入为两个float16数据A和B
    output reg [15:0] product;   // 输出为float16数据
    
    reg sign; // 输出的正负标志位
    reg signed [5:0] exponent; // 输出数据的指数，有正负故选择有符号数
    reg [9:0] mantissa; // 输出数据的小数
    reg [10:0] fractionA, fractionB;	//fraction = {1,mantissa} 计算二进制数据最高位 补1
    reg [21:0] fraction; // 相乘结果参数
    
    
    always @ (floatA or floatB) begin
    	if (floatA == 0 || floatB == 0) begin  // A或者B为0的情况
    		product = 0;
    	end else begin
    		sign = floatA[15] ^ floatB[15];  // 异或门判断输出的正负
    		exponent = floatA[14:10] + floatB[14:10] - 5'd15 + 5'd2; // 由于借位给fractionA和fractionB，需要先补齐两位指数
    	
    		fractionA = {
        1'b1,floatA[9:0]}; // 借位给fractionA
    		fractionB = {
        1'b1,floatB[9:0]}; // 借位给fractionB
    		fraction = fractionA * fractionB; // 计算二进制乘法
    		//  找到第一个不为0的数字并对指数进行匹配处理
    		if (fraction[21] == 1'b1) begin
    			fraction = fraction << 1;
    			exponent = exponent - 1; 
    		end else if (fraction[20] == 1'b1) begin
    			fraction = fraction << 2;
    			exponent = exponent - 2;
    		end else if (fraction[19] == 1'b1) begin
    			fraction = fraction << 3;
    			exponent = exponent - 3;
    		end else if (fraction[18] == 1'b1) begin
    			fraction = fraction << 4;
    			exponent = exponent - 4;
    		end else if (fraction[17] == 1'b1) begin
    			fraction = fraction << 5;
    			exponent = exponent - 5;
    		end else if (fraction[16] == 1'b1) begin
    			fraction = fraction << 6;
    			exponent = exponent - 6;
    		end else if (fraction[15] == 1'b1) begin
    			fraction = fraction << 7;
    			exponent = exponent - 7;
    		end else if (fraction[14] == 1'b1) begin
    			fraction = fraction << 8;
    			exponent = exponent - 8;
    		end else if (fraction[13] == 1'b1) begin
    			fraction = fraction << 9;
    			exponent = exponent - 9;
    		end else if (fraction[12] == 1'b0) begin
    			fraction = fraction << 10;
    			exponent = exponent - 10;
    		end 
    	
    		mantissa = fraction[21:12];
    		if(exponent[5]==1'b1) begin //exponent is negative
    			product=16'b0000000000000000;
    		end
    		else begin
    			product = {
        sign,exponent[4:0],mantissa};// 拼接输出数据
    		end
    	end
    end
    
    endmodule

如图所示：

![在这里插入图片描述][5ebb654603544cf0ae5c2c728aa5efb7.png_pic_center]

### 4.3.2 分析与综合 ###

将floatMult16设置为顶层：

![在这里插入图片描述][5a109afd48c24235add92039d5cab829.png_pic_center]

关闭上次的分析文件：

![在这里插入图片描述][65ec35ff31d440d992a69e76890d7843.png_pic_center]

对设计进行分析，操作如图：

![在这里插入图片描述][71dd5923e64442729f047622ef000fd3.png_pic_center]

分析后的设计，Vivado自动生成原理图，如图：

![在这里插入图片描述][8bdf1acaf10c4235a53a105be9a4e1bb.png_pic_center]

对设计进行综合，操作如图：

![在这里插入图片描述][213fc138ba3644e48bddf590bd5a1330.png_pic_center]

### 4.3.3 功能仿真 ###

创建TestBench，操作如图所示：

![在这里插入图片描述][b4232fb5b1f24664bc638a1d8dc2c6dc.png_pic_center]

双击打开，输入激励代码：

`timescale 100 ns / 10 ps
    
    module tb_floatMult16();
    reg [15:0] floatA;
    reg [15:0] floatB;
    wire [15:0] product;
    
    initial begin
    	
    	// 4 * 5
    	#0
    	floatA = 16'b0100010000000000;
    	floatB = 16'b0100010100000000;
    
    	// 0.0004125 * 0
    	#10
    	floatA = 16'b0000111011000010;
    	floatB = 16'b0000000000000000;
    
    	#10
    	$stop;
    end
    
    floatMult16 FM
    (
    	.floatA(floatA),
    	.floatB(floatB),
    	.product(product)
    );
    
    endmodule

如图所示：

![在这里插入图片描述][03c229f555c248eeaefe0b021a5c8ce8.png_pic_center]

将tb\_floatMult16设置为顶层：

![在这里插入图片描述][b69d67612ac4473783eeb9b0c6974f4d.png_pic_center]

开始进行仿真，操作如下:

![在这里插入图片描述][34215d2f6f654ec2b88d0abb77d1ca5e.png_pic_center]

添加仿真对象，操作如图：

![在这里插入图片描述][dea0954c7a5242b1b21ba3430019e2b2.png_pic_center]

开始仿真，如图：

![在这里插入图片描述][63d3f9f771c841bca4e62063bddd23c0.png_pic_center]

仿真波形，如图：

![在这里插入图片描述][e90aff28558042119623f646210e6712.png_pic_center]

## 4.4 Processing Element ##

### 4.4.1 设计输入 ###

创建processingElement16文件，如图：

![在这里插入图片描述][ccb9d85585da4a5b9e1fa94084734213.png_pic_center]

双击打开，输入如下代码：

module processingElement16(clk,reset,floatA,floatB,result);
    
    parameter DATA_WIDTH = 16;  // 数据类型float16
    
    input clk, reset;
    input [DATA_WIDTH-1:0] floatA, floatB; // 输入float16数据A和B
    output reg [DATA_WIDTH-1:0] result;  // 输出float16数据
    
    wire [DATA_WIDTH-1:0] multResult;
    wire [DATA_WIDTH-1:0] addResult;
    
    floatMult16 FM (floatA,floatB,multResult); // float16乘法运算
    floatAdd16 FADD (multResult,result,addResult);// float16加法运算
    
    always @ (posedge clk or posedge reset) begin
    	if (reset == 1'b1) begin
    		result = 0;    // 开始时，result赋值为0
    	end else begin
    		result = addResult;  // 求和结果不断更新为result，即为累加操作，result作为最后的输出
    	end
    end
    
    endmodule

如图所示：

![在这里插入图片描述][1ee7e431f03b4b03a2664bbada4354e0.png_pic_center]

### 4.4.2 分析与综合 ###

关闭上次的分析文件：

![在这里插入图片描述][3c984be9625d4e788bf278d09d56c689.png_pic_center]

将processingElement16设置为顶层：

![在这里插入图片描述][77da684e01254d15aad291ffe0913886.png_pic_center]

对设计进行分析，操作如图：

![在这里插入图片描述][c8473934e4be4a9b9d58d19681061715.png_pic_center]

分析后的设计，Vivado自动生成原理图，如图：

![在这里插入图片描述][253b9dd422c142acb0ff323dbde697ff.png_pic_center]

对设计进行综合，操作如图：

![在这里插入图片描述][42bdee7a15064193910189707fbe2f67.png_pic_center]

### 4.4.3 功能仿真 ###

创建TestBench，操作如图所示：

![在这里插入图片描述][77530252ce3148d58ed9025d04bfa3fc.png_pic_center]

双击打开，输入激励代码：

`timescale 100 ns / 10 ps
    
    module tb_processingElement16();
    reg clk,reset;
    reg [15:0] floatA, floatB;
    wire [15:0] result;
    
    localparam PERIOD = 100;
    
    always
    	#(PERIOD/2) clk = ~clk;
    
    initial begin
    	#0
    	clk = 1'b0;
    	reset = 1;
    	// A = 2 , B = 3
    	floatA = 16'h4000;
    	floatB = 16'h4200;
    
    	#PERIOD
    	reset = 0;
    
    	#(2*PERIOD)
    	$stop;	
    end
    
    processingElement16 PE 
    (
    	.clk(clk),
    	.reset(reset),
    	.floatA(floatA),
    	.floatB(floatB),
    	.result(result)
    );
    endmodule

如图所示：

![在这里插入图片描述][201327ea37a3451e9a6ce8116c449fcc.png_pic_center]

将tb\_processingElement16设置为顶层：

![在这里插入图片描述][90b62394d496494496195bebcf709b8e.png_pic_center]

开始进行仿真，操作如下:

![在这里插入图片描述][9b341dd9fb5244fc8a29a409418ae439.png_pic_center]

开始仿真，如图：

![在这里插入图片描述][c78f4428929c4812b8cb8710d35202fd.png_pic_center]

仿真波形，如图：

![在这里插入图片描述][7f2e4fd810264289a9d91debd6e24a90.png_pic_center]

## 4.5 Convolution Unit ##

### 4.5.1 设计输入 ###

创建convUnit文件，如图：

![在这里插入图片描述][e3f09955c57b46cfbb7c9e85342a4a0b.png_pic_center]

双击打开，输入如下代码：

module convUnit(clk,reset,image,filter,result);
    
    parameter DATA_WIDTH = 16;  //数据宽度，float16
    parameter D = 1; //卷积核深度
    parameter F = 5; //卷积核大小
    
    input clk, reset;
    input [0:D*F*F*DATA_WIDTH-1] image, filter; //[0:399] image输入
    output [0:DATA_WIDTH-1] result;  //[0:15] result输出
    
    reg [DATA_WIDTH-1:0] selectedInput1, selectedInput2;
    
    integer i;
    
    
    processingElement16 PE
    	(
    		.clk(clk),
    		.reset(reset),
    		.floatA(selectedInput1),
    		.floatB(selectedInput2),
    		.result(result)
    	);
    
    // The convolution is calculated in a sequential process to save hardware
    // The result of the element wise matrix multiplication is finished after (F*F+2) cycles (2 cycles to reset the processing element and F*F cycles to accumulate the result of the F*F multiplications) 
    always @ (posedge clk, posedge reset) begin
    	if (reset == 1'b1) begin // reset
    		i = 0;
    		selectedInput1 = 0;
    		selectedInput2 = 0;
    	end else if (i > D*F*F-1) begin // if the convolution is finished but we still wait for other blocks to finsih, send zeros to the conv unit (in case of pipelining)
    		selectedInput1 = 0;
    		selectedInput2 = 0;
    	end else begin // send one element of the image part and one element of the filter to be multiplied and accumulated
    		selectedInput1 = image[DATA_WIDTH*i+:DATA_WIDTH];
    		selectedInput2 = filter[DATA_WIDTH*i+:DATA_WIDTH];
    		i = i + 1;
    	end
    end
    
    endmodule

如图所示：

![在这里插入图片描述][8e25271c7e674c89b00cf1d59dc48a46.png_pic_center]

### 4.5.2 分析与综合 ###

将convUnit设置为顶层：

![在这里插入图片描述][98504b3273ff4f0b989d3486e51eca9e.png_pic_center]

关闭上次的分析文件：

![在这里插入图片描述][1ebafe09547b4789ba237a0d292252c9.png_pic_center]

对设计进行分析，操作如图：

![在这里插入图片描述][bc4b38ef8ac94ca59d35db321bd335ae.png_pic_center]

分析后的设计，Vivado自动生成原理图，如图：

![在这里插入图片描述][9d3bb4a020d24438ab1fd00c9da2619c.png_pic_center]

对设计进行综合，操作如图：

![在这里插入图片描述][833aaa0f194149639c81d3f9fa3bead5.png_pic_center]

### 4.5.3 功能仿真 ###

创建TestBench，操作如图所示：

![在这里插入图片描述][41102c6306be4c948aad0171669eb482.png_pic_center]

双击打开，输入激励代码：

`timescale 100 ns / 10 ps
    
    module tb_convUnit();
    reg clk, reset;
    reg [1*5*5*16-1:0] image, filter; // we test with a filter whose size is 2*3*3 
    wire [15:0] result;
    
    localparam PERIOD = 100;
    
    always
    	#(PERIOD/2) clk = ~clk;
    
    initial begin
    	#0
    	clk = 1'b0;
    	reset = 1;
    	// We test with an image part and a filter whose values are all 4 
    	// The expected result is 400 generated after 25 clock cycles
    	image =  400'h4400440044004400440044004400440044004400440044004400440044004400440044004400440044004400440044004400;
    	filter = 400'h4400440044004400440044004400440044004400440044004400440044004400440044004400440044004400440044004400;
    	
    	#PERIOD
    	reset = 0;
    	
    	#(27*PERIOD)
    	$displayh(result);
    	$stop;
    end
    
    convUnit 
    #(
    	.DATA_WIDTH(16),
    	.D(1),
    	.F(5)
    )
    UUT
    (
    	.clk(clk),
    	.reset(reset),
    	.image(image),
    	.filter(filter),
    	.result(result)
    );
    endmodule

如图所示：

![在这里插入图片描述][2b69e37ce1c84cad92cf206f333b0a98.png_pic_center]

将tb\_convUnit设置为顶层：

![在这里插入图片描述][a277a170797742588ad6498c1807bdb8.png_pic_center]

开始进行仿真，操作如下:

![在这里插入图片描述][d521895a4abc43a7ba839398fd17c131.png_pic_center]

开始仿真，如图：

![在这里插入图片描述][51a867e526e244b28b7a2777fbfcd75c.png_pic_center]

仿真波形，如图：

![在这里插入图片描述][04995d0e13e14de59181da2132ee1656.png_pic_center]

## 4.6 Single Filter Layer ##

### 4.6.1 设计输入 ###

创建convLayerSingle工程文件，如图：

![在这里插入图片描述][735a79c025d040f4ab50aef191b1060c.png_pic_center]

双击打开，输入如下代码：

module convLayerSingle(clk,reset,image,filter,outputConv);
    
    parameter DATA_WIDTH = 16;
    parameter D = 1; //卷积核的深度
    parameter H = 32; //输入图像的高度
    parameter W = 32; //输入图像的宽度
    parameter F = 5; //卷积核的大小
    
    input clk, reset;
    input [0:D*H*W*DATA_WIDTH-1] image;
    input [0:D*F*F*DATA_WIDTH-1] filter;
    output reg [0:(H-F+1)*(W-F+1)*DATA_WIDTH-1] outputConv; // output of the module
    
    wire [0:((W-F+1)/2)*DATA_WIDTH-1] outputConvUnits; // output of the conv units and input to the row selector
    
    reg internalReset;
    wire [0:(((W-F+1)/2)*D*F*F*DATA_WIDTH)-1] receptiveField; // array of the matrices to be sent to conv units
    
    
    integer counter, outputCounter;
    //counter: number of clock cycles need for the conv unit to finsish
    //outputCounter: index to map the output of the conv units to the output of the module
    
    reg [5:0] rowNumber, column; 
    //rowNumber: determines the row that is calculated by the conv units
    //column: determines if we are calculating the first or the second 14 pixels of the output row
    
    RFselector
    #(
    	.DATA_WIDTH(DATA_WIDTH),
    	.D(D),
    	.H(H),
    	.W(W),
    	.F(F)
    ) RF
    (
    	.image(image),
    	.rowNumber(rowNumber),
    	.column(column),
    	.receptiveField(receptiveField)
    );
    
    genvar n;
    
    generate //generating n convolution units where n is half the number of pixels in one row of the output image
    	for (n = 0; n < (H-F+1)/2; n = n + 1) begin 
    		convUnit
    		#(
    			.D(D),
    			.F(F)
    		) CU
    		(
    			.clk(clk),
    			.reset(internalReset),
    			.image(receptiveField[n*D*F*F*DATA_WIDTH+:D*F*F*DATA_WIDTH]),
    			.filter(filter),
    			.result(outputConvUnits[n*DATA_WIDTH+:DATA_WIDTH])
    		);
    	end
    endgenerate
    
    always @ (posedge clk or posedge reset) begin
    	if (reset == 1'b1) begin
    		internalReset = 1'b1;
    		rowNumber = 0;
    		column = 0;
    		counter = 0;
    		outputCounter = 0;
    	end else if (rowNumber < H-F+1) begin
    		if (counter == D*F*F+2) begin //The conv unit finishes ater 1*5*5+2 clock cycles
    			outputCounter = outputCounter + 1;
    			counter = 0;
    			internalReset = 1'b1;
    			if (column == 0) begin
    				column = (H-F+1)/2;
    			end else begin
    				rowNumber = rowNumber + 1;
    				column = 0;
    			end
    		end else begin
    			internalReset = 0;
    			counter = counter + 1;
    		end
    	end
    end
    
    always @ (*) begin
    	outputConv[outputCounter*((W-F+1)/2)*DATA_WIDTH+:((W-F+1)/2)*DATA_WIDTH] = outputConvUnits;
    end
    
    endmodule

如图所示：

![在这里插入图片描述][54c51145d15d427f9d3d5a1f22422cb8.png_pic_center]

继续创建RFselector文件：

![在这里插入图片描述][ae3ec76228994c1aa5f547741bedd82b.png_pic_center]

双击打开，输入如下代码：

module RFselector(image,rowNumber, column,receptiveField);
    
    parameter DATA_WIDTH = 16;
    parameter D = 1; //卷积核深度
    parameter H = 32; //图像高度
    parameter W = 32; //图像宽度
    parameter F = 5; //卷积核尺寸
    
    input [0:D*H*W*DATA_WIDTH-1] image;
    input [5:0] rowNumber, column;
    output reg [0:(((W-F+1)/2)*D*F*F*DATA_WIDTH)-1] receptiveField;
    
    integer address, c, k, i;
    
    always @ (image or rowNumber or column) begin
    	address = 0;
    	if (column == 0) begin
    		for (c = 0; c < (W-F+1)/2; c = c + 1) begin
    			for (k = 0; k < D; k = k + 1) begin
    				for (i = 0; i < F; i = i + 1) begin
    					receptiveField[address*F*DATA_WIDTH+:F*DATA_WIDTH] = image[rowNumber*W*DATA_WIDTH+c*DATA_WIDTH+k*H*W*DATA_WIDTH+i*W*DATA_WIDTH+:F*DATA_WIDTH];
    					address = address + 1;
    				end
    			end
    		end
    	end else begin
    		for (c = (W-F+1)/2; c < (W-F+1); c = c + 1) begin
    			for (k = 0; k < D; k = k + 1) begin
    				for (i = 0; i < F; i = i + 1) begin
    					receptiveField[address*F*DATA_WIDTH+:F*DATA_WIDTH] = image[rowNumber*W*DATA_WIDTH+c*DATA_WIDTH+k*H*W*DATA_WIDTH+i*W*DATA_WIDTH+:F*DATA_WIDTH];
    					address = address + 1;
    				end
    			end
    		end
    	end
    	
    end
    
    endmodule

如图所示：

![在这里插入图片描述][3e36559c003441f3a282ab8062dc76a5.png_pic_center]

### 4.6.2 分析与综合 ###

将convLayerSingle设置为顶层：

![在这里插入图片描述][d14cf6d50a24422b94e39b1b60563ace.png_pic_center]

关闭上次的分析文件：

![在这里插入图片描述][a2610ef1f80b447d868bb66a06a914b8.png_pic_center]

对设计进行分析，操作如图：

![在这里插入图片描述][85f888c164244208b17c3e3fae8322bb.png_pic_center]

分析后的设计，Vivado自动生成原理图，如图：

![在这里插入图片描述][210387f1b3854fc7b4a53cf7bcb7f947.png_pic_center]

对设计进行综合，操作如图：

![在这里插入图片描述][af82637e3c1047dcb9452e1487942c71.png_pic_center]

### 4.6.3 功能仿真 ###

创建TestBench，文件名为tb\_convLayerSingle，如图所示：

![在这里插入图片描述][dcfc480d146a4abf94613835ab88c6a1.png_pic_center]

双击打开，输入激励代码：

`timescale 1ns / 1ps
    module tb_convLayerSingle();
    reg clk, reset;
    reg [1*32*32*16-1:0] image; //We test with a 1*32*32 image
    reg [1*5*5*16-1:0] filter; //We test with a 1*5*5 filter
    wire [1*28*28*16-1:0] outputConv;
    
    localparam PERIOD = 100;
    
    integer i, clkCounter;
    
    always
    	#(PERIOD/2) clk = ~clk;
    
    always @ (posedge clk) begin
    	clkCounter = clkCounter + 1;
    end
    
    initial begin
    	#0
    	clkCounter = 0;
    	clk = 1'b0;
    	reset = 1;
    	//We test with the first image and the filters of the first layer of LeNet
    	image = 16384'h00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000326638fd3bf038fd32460000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000032063b773be83be83be83b6f000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000032c73b1f3bf03be83b7f3b4f3be833272606000000000000000000000000000000000000000000000000000000000000000000000000000000000000290533883b073be83bf03be83a5635453be83bf037a8000000000000000000000000000000000000000000000000000000000000000000000000000000000000391d3be83be83be83bf03be83be8360639ee3bf0393d0000000000000000000000000000000000000000000000000000000000000000000000000000000032663b773bf03bf039f637273bf03b2731e634f53c003945000000000000000000000000000000000000000000000000000000000000000000000000000032063b773be83be8399e2a0634b537982d45000000003bf03ba032460000000000000000000000000000000000000000000000000000000000000000000030c5392d3bf03b4f3a8735450000000000000000000000003bf03be8392d0000000000000000000000000000000000000000000000000000000000000000270739963be83b8834742cc52f070000000000000000000000003bf03be83a1e000000000000000000000000000000000000000000000000000000000000000033273be83be833e80000000000000000000000000000000000003bf03be83a1e00000000000000000000000000000000000000000000000000000000000000003a363bf039f600000000000000000000000000000000000000003c003bf03a2600000000000000000000000000000000000000000000000000000000000034c53bb83be8370700000000000000000000000000000000000000003bf03be838a500000000000000000000000000000000000000000000000000000000000035553be83b372e46000000000000000000000000000000002707383c3bf039d62a0600000000000000000000000000000000000000000000000000000000000035553be83aff000000000000000000000000000000002707381c3be83b0f3474000000000000000000000000000000000000000000000000000000000000000035553be8388d00000000000000000000000000003206392d3be8396d00000000000000000000000000000000000000000000000000000000000000000000000035653bf03b0f00000000000000000000000037273b773bf03915000000000000000000000000000000000000000000000000000000000000000000000000000035553be83bd0389532062f47355539963b0f3bf03aff393d3307000000000000000000000000000000000000000000000000000000000000000000000000000035553be83be83be83b2f3abf3be83be83be83a2638140000000000000000000000000000000000000000000000000000000000000000000000000000000000002f073a3e3be83be83bf03be83be83b4f388d0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002e4638043be83bf03be8386c30a50000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000;
    	filter = 400'h346b33f83146351432de310e2cc624deb409b3a2b61ab4c8b679b63bb455b48d2b45b08b2bdbb4c0b536b4b9b598b810b521;
    	#PERIOD
    	reset = 0;
    
    	#((56*28+1)*PERIOD)
    	for (i = 28*28-1; i >=0; i = i - 1) begin
    		$displayh(outputConv[i*16+:16]);
    	end 
    	$stop;
    end
    
    convLayerSingle UUT
    (
    	.clk(clk),
    	.reset(reset),
    	.image(image),
    	.filter(filter),
    	.outputConv(outputConv)
    );
    endmodule

如图所示：

![在这里插入图片描述][5c4d3767555a4067abfabf0bb28ff14e.png_pic_center]

将tb\_convLayerSingle设置为顶层：

![在这里插入图片描述][a9c9819080a74569beca1659ea50a1e1.png_pic_center]

开始进行仿真，操作如下:

![在这里插入图片描述][7767bc0d35294c6f9b39652ef0f4c603.png_pic_center]

开始仿真，如图：

![在这里插入图片描述][f28650afc23249c8b04f9e7284c68177.png_pic_center]

仿真波形如图所示：

![在这里插入图片描述][f979e2579c454391884b901f70f2b9c4.png_pic_center]

## 4.7 Multi Filter Layer ##

### 4.7.1 设计输入 ###

创建convLayerMulti文件，如图：

![在这里插入图片描述][80ba65f4942c4429b2597b13d98e15c4.png_pic_center]

双击打开，输入如下代码：

module convLayerMulti(clk,reset,image,filters,outputConv);
    
    parameter DATA_WIDTH = 16;
    parameter D = 1; //输入图像深度
    parameter H = 32; //输入图像高度
    parameter W = 32; //输入图像宽度
    parameter F = 5; //卷积核尺寸
    parameter K = 6; //卷积核数量
    
    input clk, reset;
    input [0:D*H*W*DATA_WIDTH-1] image;
    input [0:K*D*F*F*DATA_WIDTH-1] filters;
    output reg [0:K*(H-F+1)*(W-F+1)*DATA_WIDTH-1] outputConv;
    
    reg [0:2*D*F*F*DATA_WIDTH-1] inputFilters;
    wire [0:2*(H-F+1)*(W-F+1)*DATA_WIDTH-1] outputSingleLayers;
    
    reg internalReset;
    
    integer filterSet, counter, outputCounter;
    
    genvar i;
    
    generate
    	for (i = 0; i < 2; i = i + 1) begin 
    		convLayerSingle #(
    		  .DATA_WIDTH(DATA_WIDTH),
    		  .D(D),
    		  .H(H),
    		  .W(W),
    		  .F(F)
    		) UUT 
    		(
    			.clk(clk),
    	     		.reset(internalReset),
    	     		.image(image),
    	    		.filter(inputFilters[i*D*F*F*DATA_WIDTH+:D*F*F*DATA_WIDTH]),
    	     		.outputConv(outputSingleLayers[i*(H-F+1)*(W-F+1)*DATA_WIDTH+:(H-F+1)*(W-F+1)*DATA_WIDTH])
          		);
      	end
    endgenerate
    
    always @ (posedge clk or posedge reset) begin
    	if (reset == 1'b1) begin
    		internalReset = 1'b1;
    		filterSet = 0;
    		counter = 0;
    		outputCounter = 0;		
    	end else if (filterSet < K/2) begin
    		if (counter == ((((H-F+1)*(W-F+1))/((H-F+1)/2))*(D*F*F+3)+1)) begin
    			outputCounter = outputCounter + 1;
    			counter = 0;
    			internalReset = 1'b1;
    			filterSet = filterSet + 1;
    		end else begin
    			internalReset = 0;
    			counter = counter + 1;
    		end
    	end
    end
    
    always @ (*) begin
    	inputFilters = filters[filterSet*2*D*F*F*DATA_WIDTH+:2*D*F*F*DATA_WIDTH];
    	outputConv[outputCounter*2*(H-F+1)*(W-F+1)*DATA_WIDTH+:2*(H-F+1)*(W-F+1)*DATA_WIDTH] = outputSingleLayers;
    end
    
    endmodule

如图所示：

![在这里插入图片描述][a890c3299b894f9fb3988ef408cb4fda.png_pic_center]

### 4.7.2 分析与综合 ###

将convLayerMulti设置为顶层：

![在这里插入图片描述][3d9eb77cd03a451fa217a7e38dd013df.png_pic_center]

关闭上次的分析文件：

![在这里插入图片描述][2e3074185d3147ad96a4bc202da80722.png_pic_center]  
对设计进行分析，操作如图：

![在这里插入图片描述][41f6121c18d746b89f2656e431c84d7a.png_pic_center]  
分析后的设计，Vivado自动生成原理图，如图：

![在这里插入图片描述][78d60cba0e634b23bc8db70040ba7301.png_pic_center]  
对设计进行综合，操作如图：

![在这里插入图片描述][47f6bd419d644839ab173804d77a2b38.png_pic_center]

### 4.7.3 功能仿真 ###

创建TestBench，操作如图所示：

![在这里插入图片描述][de17b5705f9148c5a1be39372fab28b6.png_pic_center]

双击打开，输入激励代码：

module tb_convLayerMulti();
    reg reset, clk;
    reg [1*32*32*16-1:0] image;
    reg [6*1*5*5*16-1:0] filters;
    wire [6*28*28*16-1:0] outputConv;
    
    localparam PERIOD = 100;
    
    integer i;
    
    always
    	#(PERIOD/2) clk = ~clk;
    	
    	
    initial begin 
    	#0
    	clk = 1'b0;
    	reset = 1;
    	//We test with a 1*32*32 image and 6 5*5 filters, all the values are 4
    	//Expected output 4704 (6*28*28) values equal to 400 (16*25)
    	 image = 16384'h00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000326638fd3bf038fd32460000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000032063b773be83be83be83b6f000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000032c73b1f3bf03be83b7f3b4f3be833272606000000000000000000000000000000000000000000000000000000000000000000000000000000000000290533883b073be83bf03be83a5635453be83bf037a8000000000000000000000000000000000000000000000000000000000000000000000000000000000000391d3be83be83be83bf03be83be8360639ee3bf0393d0000000000000000000000000000000000000000000000000000000000000000000000000000000032663b773bf03bf039f637273bf03b2731e634f53c003945000000000000000000000000000000000000000000000000000000000000000000000000000032063b773be83be8399e2a0634b537982d45000000003bf03ba032460000000000000000000000000000000000000000000000000000000000000000000030c5392d3bf03b4f3a8735450000000000000000000000003bf03be8392d0000000000000000000000000000000000000000000000000000000000000000270739963be83b8834742cc52f070000000000000000000000003bf03be83a1e000000000000000000000000000000000000000000000000000000000000000033273be83be833e80000000000000000000000000000000000003bf03be83a1e00000000000000000000000000000000000000000000000000000000000000003a363bf039f600000000000000000000000000000000000000003c003bf03a2600000000000000000000000000000000000000000000000000000000000034c53bb83be8370700000000000000000000000000000000000000003bf03be838a500000000000000000000000000000000000000000000000000000000000035553be83b372e46000000000000000000000000000000002707383c3bf039d62a0600000000000000000000000000000000000000000000000000000000000035553be83aff000000000000000000000000000000002707381c3be83b0f3474000000000000000000000000000000000000000000000000000000000000000035553be8388d00000000000000000000000000003206392d3be8396d00000000000000000000000000000000000000000000000000000000000000000000000035653bf03b0f00000000000000000000000037273b773bf03915000000000000000000000000000000000000000000000000000000000000000000000000000035553be83bd0389532062f47355539963b0f3bf03aff393d3307000000000000000000000000000000000000000000000000000000000000000000000000000035553be83be83be83b2f3abf3be83be83be83a2638140000000000000000000000000000000000000000000000000000000000000000000000000000000000002f073a3e3be83be83bf03be83be83b4f388d0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002e4638043be83bf03be8386c30a50000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000;
    	 filters[0*5*5*16+:5*5*16] = 400'h346b33f83146351432de310e2cc624deb409b3a2b61ab4c8b679b63bb455b48d2b45b08b2bdbb4c0b536b4b9b598b810b521;
      	filters[1*5*5*16+:5*5*16] = 400'h2beb2d7b319a3303349830989e6132afa8af343b345632da34043406345c30ebac9dacf7b0ec2464b26d2e3bb2c4b33cb203;
    	 filters[2*5*5*16+:5*5*16] = 400'ha610312fad4522feac2330d832a4319ba5ecaac229349a10afb12f4aaeb8aadb2f99b26021bdac24a968aef7321c29c82d35;
    	 filters[3*5*5*16+:5*5*16] = 400'h240634542fc9375033bf3851365635c4a3bd2b162aac2a602c7e31812d6a35d03782310c37c130e932e22624a6b8ab7da1f3;
    	 filters[4*5*5*16+:5*5*16] = 400'ha99baabc2aa33113af6bb1db23c8aa0ab69ab575b6ebb60e16d4b1dfac5a31be2f9c2b2ab298b1b6b2cdae2db5c6b4f0af69;
    	 filters[5*5*5*16+:5*5*16] = 400'h37fe37f0380b340434572f01309f31f32e76a6dd2aba9fa734cf303536562c91338e34322f47b1442217a6c2a8eba2a8addc;
    	#(PERIOD)
    
    	reset = 0;
    
    	
    	#(7*1457*PERIOD)
    	for (i = 6*28*28-1; i >=0; i = i - 1) begin
    		$displayh(outputConv[i*16+:16]);
    	end
    	$stop;
    end
    
    convLayerMulti UUT 
    (
    	.clk(clk),
    	.reset(reset),
    	.image(image),
    	.filters(filters),
    	.outputConv(outputConv)
    );
    
    endmodule

如图所示：

![在这里插入图片描述][663fed94dd5f4b21ae5d380ab93e2fe4.png_pic_center]  
开始进行仿真，操作如下:

![在这里插入图片描述][629fcfe2b9e6496c8d1d214c13ebaadf.png_pic_center]  
开始仿真，如图：

![在这里插入图片描述][a150334ce0904a6b8bf12e1da92b4c9c.png_pic_center]

## 4.8 IntegrationConv ##

### 4.8.1 设计输入 ###

创建integrationConv文件，如图：

![在这里插入图片描述][e4a6270e38eb4aa5bbdc0171cfd71a5d.png_pic_center]  
双击打开，输入如下代码：

module integrationConv (clk,reset,CNNinput,Conv,ConvOutput);
    
    parameter DATA_WIDTH = 16;
    parameter ImgInW = 32;
    parameter ImgInH = 32;
    parameter ConvOut = 28;
    parameter Kernel = 5;
    parameter DepthC = 6;
    
    
    input clk, reset;
    input [ImgInW*ImgInH*DATA_WIDTH-1:0] CNNinput;
    input [Kernel*Kernel*DepthC*DATA_WIDTH-1:0] Conv;
    output [ConvOut*ConvOut*DepthC*DATA_WIDTH-1:0] ConvOutput;
    
    convLayerMulti C1
    (
    	.clk(clk),
    	.reset(reset),
    	.image(CNNinput),
    	.filters(Conv),
    	.outputConv(ConvOutput)
    );
    
    endmodule

如图所示：

![在这里插入图片描述][cf0b4473a9e142ff9bb9e74f7d4c246c.png_pic_center]

### 4.8.2 分析与综合 ###

将integrationConv设置为顶层：

![在这里插入图片描述][dd1753d6c5de426183693295bc2b7135.png_pic_center]  
关闭上次的分析文件：

![在这里插入图片描述][efa70ebbbd314b1082a97f005842914e.png_pic_center]  
对设计进行分析，操作如图：

![在这里插入图片描述][cf4efacd7478497bb64a59768c81c1be.png_pic_center]  
分析后的设计，Vivado自动生成原理图，如图：

![在这里插入图片描述][1a919097e49445ceb951c0f4947e075f.png_pic_center]

对设计进行综合，操作如图：

![在这里插入图片描述][b86824d795bc4dd898370bf7dd20f37d.png_pic_center]  
**`纪念一下，“通信行程卡”于2022年12月13日0时，正式下线`**

![在这里插入图片描述][f4678944225f439a9ef6ceae33c61115.jpeg_pic_center]

**希望本文对大家有帮助，上文若有不妥之处，欢迎指正**

**分享决定高度，学习拉开差距**

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