FPGA测试程序代码示范

2018-12-12 14:11:37 2973 FPGA sram 图像采集

0 由于整个 FPGA 程序包括 3 部分：处于 TOP 的主体程序，控制其他各个部分程序的运行；视频图像数据采集程序，从 SAA7113 获得数字图像数据并保存到 SRAM 中；SRAM 读写程序实现对 SRAM 的数据读写。测试程序需要仿真数据的全部流程。测试程序代码如下： `include "timescale.v" moduletst_saa7113 (error,dsprst,xreset,saareset,ARDY,ED_O,ED_OEN_O,SRAM_1_EA,SRAM_2_EA,SRAM_1_O_ED,SRAM_2_O_ED); //内部寄存器 reg reset; reg clk;//50MHz 时钟 reg llck;//SAA7113 的时钟 reg [7:0] vpo;//来自 saa7113 的图像数据 reg capture;//采集数据标志 reg toggle;//总线切换标志 reg [1:0] rst; //输入 input error; input dsprst,xreset,saareset; input ARDY; input [7:0] ED_O; input ED_OEN_O; input [18:0] SRAM_1_EA; input [7:0] SRAM_1_O_ED; input [18:0] SRAM_2_EA; input [7:0] SRAM_2_O_ED; //来自 dsp 的信号 reg CE3_; reg ARE_; reg AWE_; reg [21:2] EA; reg [7:0] ED_I; //TO SRAM reg [7:0] SRAM_1_IN_ED; reg [7:0] SRAM_2_IN_ED; //wires //from saa7113 wire SRAM_CE_; wire SRAM_OE_; wire SRAM_WE_; wire [18:0] la; wire [7:0] ld; //FROM DSP wire CE_SRAM; wire WE_SRAM; wire OE_SRAM; wire [7:0] ED_SRAM; wire [18:0] EA_SRAM; //连接各个子程序 LWBSAA7113 L_SAA7113 ( .reset(reset), .clk(clk), .llck(llck), .vpo(vpo), .rst(rst), .capture(capture), .error(error), .SRAM_CE_(SRAM_CE_), .SRAM_OE_(SRAM_OE_), .SRAM_WE_(SRAM_WE_), .la(la), .ld(ld) ); LWBDECODE L_DECODE ( .reset(reset), .CE3_(CE3_), .ARE_(ARE_), .AWE_(AWE_), .EA(EA), .ED_I(ED_I), .ED_O(ED_O), .ED_OEN_O(ED_OEN_O), .ARDY(ARDY), .EA_SRAM(EA_SRAM), .ED_SRAM(ED_SRAM), .CE_SRAM(CE_SRAM), .WE_SRAM(WE_SRAM), .OE_SRAM(OE_SRAM), .dsprst(dsprst), .xreset(xreset), .saareset(saareset) ); LWBBUSCHANGE L_BUSCHANGE ( .EA_SRAM(EA_SRAM), .ED_SRAM(ED_SRAM), .CE_SRAM(CE_SRAM), .WE_SRAM(WE_SRAM), .OE_SRAM(OE_SRAM), .la(la), .ld(ld), .SRAM_CE_(SRAM_CE_), .SRAM_WE_(SRAM_WE_), .SRAM_OE_(SRAM_OE_), .SRAM_1_IN_ED(SRAM_1_IN_ED), .SRAM_2_IN_ED(SRAM_2_IN_ED), .toggle(toggle), .SRAM_1_EA(SRAM_1_EA), .SRAM_1_O_ED(SRAM_1_O_ED), .SRAM_2_EA(SRAM_2_EA), .SRAM_2_O_ED(SRAM_2_O_ED) ); //产生时钟信号 always #10 clk=~clk; always #20 llck = ~llck; initial begin $display("n status : %t TestBench of saa7113 started! nn",$time); //initial value clk = 0; #7; llck =0; //reset reset = 1; //dsp 初始化 ARE_ = 1; AWE_ = 1; CE3_ = 1; //初始化 capture = 0; toggle = 1; #2; reset = 0; repeat(20) @(posedge clk); reset = 1'b1; // negate reset //dsp 读取数据内容 SRAM_1_IN_ED = 8'h1d; SRAM_2_IN_ED = 8'h2d; //dsp 地址总线 EA[21:16] = 6'b000000; EA[15:7] = 9'b000000000; EA[6:2]= 5'b00001; #5; CE3_ = 0; ARE_ = 0; //saa7113 输出内容 capture = 1; #5; @(posedge llck) vpo = 8'haa; @(posedge llck) vpo = 8'hbb; @(posedge llck) vpo = 8'hcc; @(posedge llck) vpo = 8'hdd; @(posedge llck) vpo = 8'hee; //场同步信号 //1 @(posedge llck) vpo = 8'hff;//begin @(posedge llck) vpo = 8'h00; @(posedge llck) vpo = 8'h00; @(posedge llck) vpo = 8'b00100000;//sav //2 @(posedge llck) vpo = 8'hff;//begin @(posedge llck) vpo = 8'h00; @(posedge llck) vpo = 8'h00; @(posedge llck) vpo = 8'b00100000; //数据开始 @(posedge llck) vpo = 8'hff;//begin @(posedge llck) vpo = 8'h00; @(posedge llck) vpo = 8'h00; @(posedge llck) vpo = 8'b00000000; //data @(posedge llck) vpo = 8'h01;//Cb @(posedge llck) vpo = 8'h02;//Yb @(posedge llck) vpo = 8'h03;//Cr @(posedge llck) vpo = 8'h04;//Yr--1 @(posedge llck) vpo = 8'h05;//Cb @(posedge llck) vpo = 8'h06;//Yb @(posedge llck) vpo = 8'h07;//Cr @(posedge llck) vpo = 8'h08;//Yr--2 @(posedge llck) vpo = 8'h09;//Cb @(posedge llck) vpo = 8'h0a;//Yb @(posedge llck) vpo = 8'h0b;//Cr @(posedge llck) vpo = 8'h0c;//Yr--3 @(posedge llck) vpo = 8'h0d;//Cb @(posedge llck) vpo = 8'h0e;//Yb @(posedge llck) vpo = 8'h0f;//Cr @(posedge llck) vpo = 8'h10;//Yr--4 @(posedge llck) vpo = 8'h11;//Cb @(posedge llck) vpo = 8'h12;//Yb @(posedge llck) vpo = 8'h13;//Cr @(posedge llck) vpo = 8'h14;//Yr--5 @(posedge llck) vpo = 8'h15;//Cb @(posedge llck) vpo = 8'h16;//Yb @(posedge llck) vpo = 8'h17;//Cr @(posedge llck) vpo = 8'h18;//Yr--6 @(posedge llck) vpo = 8'h19;//Cb @(posedge llck) vpo = 8'h1a;//Yb @(posedge llck) vpo = 8'h1b;//Cr @(posedge llck) vpo = 8'h1c;//Yr--7 @(posedge llck) vpo = 8'h1d;//Cb @(posedge llck) vpo = 8'h1e;//Yb @(posedge llck) vpo = 8'h1f;//Cr @(posedge llck) vpo = 8'h20;//Yr--8 @(posedge llck) vpo = 8'h21;//Cb @(posedge llck) vpo = 8'h22;//Yb @(posedge llck) vpo = 8'h23;//Cr @(posedge llck) vpo = 8'h24;//Yr--9 @(posedge llck) vpo = 8'h25;//Cb @(posedge llck) vpo = 8'h26;//Yb @(posedge llck) vpo = 8'h27;//Cr @(posedge llck) vpo = 8'h28;//Yr--10 @(posedge llck) vpo = 8'h29;//Cb @(posedge llck) vpo = 8'h3a;//Yb @(posedge llck) vpo = 8'h3b;//Cr @(posedge llck) vpo = 8'h3c;//Yr--11 //数据结束 @(posedge llck) vpo = 8'hff;//ff @(posedge llck) vpo = 8'h00;//00 @(posedge llck) vpo = 8'h00;//00 @(posedge llck) vpo = 8'b01110000;//end of field 1 #20; ARE_ = 1; capture = 0; #200; //开始切换 toggle = 0; #100; ARE_ = 0; //开始采集数据 capture = 1; //vertical blanking stage //1 @(posedge llck) vpo = 8'hff;//begin @(posedge llck) vpo = 8'h00; @(posedge llck) vpo = 8'h00; @(posedge llck) vpo = 8'b00100000;//sav //2 @(posedge llck) vpo = 8'hff;//begin @(posedge llck) vpo = 8'h00; @(posedge llck) vpo = 8'h00; @(posedge llck) vpo = 8'b00100000; //data start @(posedge llck) vpo = 8'hff;//begin @(posedge llck) vpo = 8'h00; @(posedge llck) vpo = 8'h00; @(posedge llck) vpo = 8'b00000000; //data @(posedge llck) vpo = 8'h01;//Cb @(posedge llck) vpo = 8'h02;//Yb @(posedge llck) vpo = 8'h03;//Cr @(posedge llck) vpo = 8'h04;//Yr--1 @(posedge llck) vpo = 8'h05;//Cb @(posedge llck) vpo = 8'h06;//Yb @(posedge llck) vpo = 8'h07;//Cr @(posedge llck) vpo = 8'h08;//Yr--2 @(posedge llck) vpo = 8'h09;//Cb @(posedge llck) vpo = 8'h0a;//Yb @(posedge llck) vpo = 8'h0b;//Cr @(posedge llck) vpo = 8'h0c;//Yr--3 @(posedge llck) vpo = 8'h0d;//Cb @(posedge llck) vpo = 8'h0e;//Yb @(posedge llck) vpo = 8'h0f;//Cr @(posedge llck) vpo = 8'h10;//Yr--4 @(posedge llck) vpo = 8'h11;//Cb @(posedge llck) vpo = 8'h12;//Yb @(posedge llck) vpo = 8'h13;//Cr @(posedge llck) vpo = 8'h14;//Yr--5 @(posedge llck) vpo = 8'h15;//Cb @(posedge llck) vpo = 8'h16;//Yb @(posedge llck) vpo = 8'h17;//Cr @(posedge llck) vpo = 8'h18;//Yr--6 @(posedge llck) vpo = 8'h19;//Cb @(posedge llck) vpo = 8'h1a;//Yb @(posedge llck) vpo = 8'h1b;//Cr @(posedge llck) vpo = 8'h1c;//Yr--7 @(posedge llck) vpo = 8'h1d;//Cb @(posedge llck) vpo = 8'h1e;//Yb @(posedge llck) vpo = 8'h1f;//Cr @(posedge llck) vpo = 8'h20;//Yr--8 @(posedge llck) vpo = 8'h21;//Cb @(posedge llck) vpo = 8'h22;//Yb @(posedge llck) vpo = 8'h23;//Cr @(posedge llck) vpo = 8'h24;//Yr--9 @(posedge llck) vpo = 8'h25;//Cb @(posedge llck) vpo = 8'h26;//Yb @(posedge llck) vpo = 8'h27;//Cr @(posedge llck) vpo = 8'h28;//Yr--10 @(posedge llck) vpo = 8'h29;//Cb @(posedge llck) vpo = 8'h3a;//Yb @(posedge llck) vpo = 8'h3b;//Cr @(posedge llck) vpo = 8'h3c;//Yr--11 //数据结束 @(posedge llck) vpo = 8'hff;//ff @(posedge llck) vpo = 8'h00;//00 @(posedge llck) vpo = 8'h00;//00 @(posedge llck) vpo = 8'b01110000;//end of field 1 #20; //结束数据采集 capture = 0; #200; //测试程序结束 $finish; end endmodule 复制代码 0
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