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module led(led, clk, seg, dig); output[7:0] led; input clk; reg[7:0] out_led; reg[25:0] cnt; output[7:0] seg; output[7:0] dig; led_num led_num(seg, dig, clk); always@(posedge clk) begin cnt = cnt + 1'd1; if(cnt == 26'd25000000) begin cnt = 1'd0; if(out_led == 8'd0) begin out_led = 8'b11111111; end else begin out_led = out_led

#include "sys/alt_stdio.h" #include "unistd.h" #include "alt_types.h" #include "io.h" #include "system.h" #include "sys/alt_alarm.h" alt_u32 timer_callback(void* context); alt_alarm timer; alt_u32 count = 25; void delay(alt_u32 cnt) { alt_u32 i,j; for(i=0; i 50) { alt_putstr("test bad\t"); } } return 0; } alt_u32 timer_callback(void* context) { static alt_u8 i = 0; if(i