HJ212-Client模拟器

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已于 2023-04-17 15:16:36 修改 · 1.5k 阅读

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#HJ212-Client #python-socket

于 2023-04-13 20:38:51 首次发布

该文详细介绍了如何使用Python实现HJ212协议的客户端模拟器，包括固定字段和变量字段的组包、CRC校验、TCP连接的建立与保持、以及定时发送数据。代码示例展示了从生成包头、添加数据到计算CRC的过程，以及如何维持TCP连接的活跃状态。

HJ212-Client模拟器

仓库地址：https://gitee.com/ll0_0ll/HJ212-Pack
HJ212协议认识:https://blog.youkuaiyun.com/lblmlms/article/details/108276232
HJ212-Client模拟器:https://blog.youkuaiyun.com/lblmlms/article/details/130139619
HJ212-Pack HJ212协议组包实现:https://blog.youkuaiyun.com/lblmlms/article/details/130139688

思路

组包固定字段
组包变量字段
CRC校验
完成整包组合
建立TCP连接
定时变化变量
定时发送报文

实现


from glob import glob
from pickle import TRUE
import time
import socket

ST = "77"
CN = "2011"
PW = "123456"
MN = "MN1234567890ABCD"
FLAG = "4"
TCP_IP = "127.0.0.1"
TCP_PORT = 30024
TCP_KEEPALIVE = 60
TCP_UPLOAD_PERIOD = 60

DATA_LIST = ["va1","va2","va3","Fb1","Fb2","Fb3"]
VALUE = 0

def get_qn():
    timestamp=time.time()
    local_time = time.localtime(timestamp)
    data_head = time.strftime("%Y%m%d%H%M%S", local_time)
    data_secs = (timestamp - int