From fdcee878ea845b9aa821356dc0c51ddf973c32f9 Mon Sep 17 00:00:00 2001
From: andy <ranchuan1996@qq.com>
Date: Thu, 18 Apr 2024 22:58:31 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0crc8=E7=AE=97=E6=B3=95?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 updata/prottcp.py | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/updata/prottcp.py b/updata/prottcp.py
index 260c753..a01c51f 100644
--- a/updata/prottcp.py
+++ b/updata/prottcp.py
@@ -10,7 +10,17 @@ from PyQt5.QtCore import *
 
 
 
-
+def crc8(data:bytearray):
+    crc=0
+    for j in range(len(data)):
+        crc^=data[j]
+        for i in range(8):
+            if((crc&0x01)!=0):
+                crc>>=1
+                crc^=0x8c
+            else:
+                crc>>=1
+    return crc