From c053afb099481cbf37b65b23c0dbc1b1f5496ae8 Mon Sep 17 00:00:00 2001
From: acevest <zhaoyanbai@126.com>
Date: Tue, 30 Dec 2025 10:41:47 +0800
Subject: [PATCH] =?utf8?q?=E6=B7=BB=E5=8A=A0serial=5Fmonitor=E7=9A=84?=
 =?utf8?q?=E6=B8=85=E5=B1=8F=E8=83=BD=E5=8A=9B?=
MIME-Version: 1.0
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Content-Transfer-Encoding: 8bit

---
 scripts/iso.grub.cfg           |  6 ++++--
 scripts/serial_monitor/main.go | 34 +++++++++++++++++++++-------------
 2 files changed, 25 insertions(+), 15 deletions(-)

diff --git a/scripts/iso.grub.cfg b/scripts/iso.grub.cfg
index a18af78..f8a932c 100644
--- a/scripts/iso.grub.cfg
+++ b/scripts/iso.grub.cfg
@@ -2,13 +2,15 @@
 #serial --unit=0
 #terminal_input serial
 #terminal_output serial
-#terminal_output serial_com0
+
+# grub的serial输出自带清屏能力
+# terminal_output serial_com0
 
 
 load_video
 set gfxmode=auto
 set gfxpayload=keep
-terminal_output gfxterm
+# terminal_output gfxterm
 
 set default="0"
 set timeout=0
diff --git a/scripts/serial_monitor/main.go b/scripts/serial_monitor/main.go
index 679c257..ecad897 100644
--- a/scripts/serial_monitor/main.go
+++ b/scripts/serial_monitor/main.go
@@ -7,6 +7,7 @@ import (
 	"log"
 	"net"
 	"os"
+	"strings"
 	"time"
 )
 
@@ -17,7 +18,7 @@ var clearMode bool
 func main() {
 	flag.StringVar(&addr, "a", ":6666", "")
 	flag.StringVar(&logFile, "f", "last.log", "")
-	flag.BoolVar(&clearMode, "c", true, "clear log file every time")
+	flag.BoolVar(&clearMode, "c", true, "clear log file and screen every time")
 	flag.Parse()
 
 	// 创建一个可写的文本文件
@@ -28,17 +29,7 @@ func main() {
 	defer f.Close()
 
 	for {
-		var modeStr string
-		if clearMode {
-			modeStr = "clear log file every time"
-		} else {
-			modeStr = "do not clear log file"
-		}
-		log.Printf("listen addr %v log file %v %v", addr, logFile, modeStr)
-
 		monitor(f)
-
-
 	}
 }
 
@@ -49,6 +40,15 @@ func monitor(f *os.File) {
 	start := time.Now()
 
 
+	var modeStr string
+	if clearMode {
+		modeStr = "clear log file every time"
+	} else {
+		modeStr = "do not clear log file"
+	}
+	log.Printf("lissten addr %v log file %v %v", addr, logFile, modeStr)
+
+
 	// 不断尝试连接串行控制台
 	for {
 		conn, err = net.Dial("tcp", addr)
@@ -64,8 +64,6 @@ func monitor(f *os.File) {
 	defer conn.Close()
 
 
-
-	// 每次连接成功，就清空这个文件，从头开始写数据
 	if clearMode {
 		err = f.Truncate(0)
 		if err != nil {
@@ -73,6 +71,16 @@ func monitor(f *os.File) {
 		}
 
 		f.Seek(0, 0)
+
+		// 组合转义码：清屏 + 清除滚动缓冲区
+		// \033[H  光标移到左上角
+		// \033[2J 清空屏幕
+		// \033[3J  清除滚动缓冲区（部分终端支持）
+		fmt.Print("\033[H\033[2J\033[3J")
+
+		//
+		var divideLine = strings.Repeat("-", 80)
+		fmt.Printf("\n%v\n\nSCREEN CLEARED AT %v\n\n%v\n\n", divideLine, time.Now().Format("2006-01-02 15:04:05.000"), divideLine)
 	}
 
 	// 写入当前时间
-- 
2.47.0