[笔记一]LED建模
一、Flashing_led_module
module flashing_led_module( input CLOCK_50, input RST_N, output[7:0] LEDG ); parameter T1MS=20'd999_999; reg[19:0] Count; always@(posedge CLOCK_50 or negedge RST_N) if(!RST_N) Count<=20'd0; else if(Count==T1MS) Count<=20'd0; else Count<=Count+1'b1; reg[7:0] rLEDG; always@(posedge CLOCK_50 or negedge RST_N) if(!RST_N) rLEDG<=8'b00000000; else if(Count==T1MS) rLEDG<=~LEDG; assign LEDG=rLEDG; endmodule二、Running_led_module