From b380907d1852ad87b874535156a972bba99d4d51 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=98=B3=E5=85=89=E5=B0=91=E5=B9=B4?= <849317537@qq.com>
Date: Wed, 15 May 2024 17:10:32 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=E4=B8=80=E4=BA=9B=E8=AF=B4?=
 =?UTF-8?q?=E6=98=8E?=
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---
 led_matrix/tb_lm_3.v | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/led_matrix/tb_lm_3.v b/led_matrix/tb_lm_3.v
index a46f29e..cc08ce2 100644
--- a/led_matrix/tb_lm_3.v
+++ b/led_matrix/tb_lm_3.v
@@ -151,7 +151,8 @@ always @(posedge sys_clk or negedge sys_rst) begin
 end
 
 reg [4:0] click_time;  // max: 20
-reg is_down;  // 消抖之后的按键状态, 是一个稳定的状态
+reg is_down;  // 消抖之后的按键状态, 是一个稳定的状态, 没稳定之前 is_down 一直是上次状态, 稳定之后视key最新的值为定
+
 always @(posedge sys_clk or negedge sys_rst) begin
     if (sys_rst == 1'b0) begin
         is_down <= 1'b0;