實戰篇
三人表決器
外設
LED
module LED
(LED0,LED1,LED2,LED3,LED4,LED5,LED6,LED7
);output LED0,LED1,LED2,LED3,LED4,LED5,LED6,LED7;assign LED0=1'b1;
assign LED1=1'b0;
assign LED2=1'b0;
assign LED3=1'b0;
assign LED4=1'b1;
assign LED5=1'b0;
assign LED6=1'b0;
assign LED7=1'b0;endmodule
按鍵
module Key( KEY0,KEY1,KEY2,KEY3,KEY4,KEY5,KEY6,KEY7,LED0,LED1,LED2,LED3,LED4,LED5,LED6,LED7);input KEY0,KEY1,KEY2,KEY3,KEY4,KEY5,KEY6,KEY7;
output LED0,LED1,LED2,LED3,LED4,LED5,LED6,LED7;assign LED0=~KEY0;
assign LED1=~KEY1;
assign LED2=~KEY2;
assign LED3=~KEY3;
assign LED4=~KEY4;
assign LED5=~KEY5;
assign LED6=~KEY6;
assign LED7=~KEY7;//input [7:0]KEY
//output [7:0]LED;
// LED=KEY;
endmodule
數碼管
module seg
(SEG_DATAa,SEG_DATAb,SEG_DATAc,SEG_DATAd,SEG_DATAe,SEG_DATAf,SEG_DATAg,SEG_DATAp,SEG_EN1,SEG_EN2,SEG_EN3,SEG_EN4,SEG_EN5,SEG_EN6
);output SEG_DATAa,SEG_DATAb,SEG_DATAc,SEG_DATAd,SEG_DATAe,SEG_DATAf,SEG_DATAg,SEG_DATAp;
output SEG_EN1,SEG_EN2,SEG_EN3,SEG_EN4,SEG_EN5,SEG_EN6;parameter SEG_NUM0=8'hbf,SEG_NUM1=8'h86,SEG_NUM2=8'hdb,SEG_NUM3=8'hcf,SEG_NUM4=8'he6,SEG_NUM5=8'hed,SEG_NUM6=8'hfd,SEG_NUM7=8'h87,SEG_NUM8=8'hff,SEG_NUM9=8'hef,SEG_NUMA=8'hf7,SEG_NUMB=8'hfc,SEG_NUMC=8'hb9,SEG_NUMD=8'hde,SEG_NUME=8'hf9,SEG_NUMF=8'hf1;assign {SEG_DATAp,SEG_DATAg,SEG_DATAf,SEG_DATAe,SEG_DATAd,SEG_DATAc,SEG_DATAb,SEG_DATAa}=SEG_NUM0;
assign {SEG_EN1,SEG_EN2,SEG_EN3,SEG_EN4,SEG_EN5,SEG_EN6}=6'b000000;endmodule
綜合
module Vote
(//輸入KEY1,KEY2,KEY3,LED1,LED2,LED3,SEG_DATA,SEG_EN
);input KEY1,KEY2,KEY3;
output LED1,LED2,LED3;
output [5:0] SEG_EN;
output reg [6:0] SEG_DATA;parameter SEG_NUM0=7'h3f,SEG_NUM1=7'h06,SEG_NUM2=7'h5b,SEG_NUM3=7'h4f;always@(*)
begincase ({KEY3,KEY2,KEY1})3'b000 :SEG_DATA=SEG_NUM0;3'b001 :SEG_DATA=SEG_NUM1;3'b010 :SEG_DATA=SEG_NUM1;3'b011 :SEG_DATA=SEG_NUM2;3'b100 :SEG_DATA=SEG_NUM1;3'b101 :SEG_DATA=SEG_NUM2;3'b110 :SEG_DATA=SEG_NUM2;3'b111 :SEG_DATA=SEG_NUM3;default:SEG_DATA=SEG_NUM0;endcase
endassign LED1=!KEY1;
assign LED2=!KEY2;
assign LED3=!KEY3;
assign SEG_EN=6'b011111;
endmodule
總結
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