Python通过串口收发文件

单位内外网是隔离的,USB对拷线被禁用,安全优盘使用太费事,就想到了通过串口传输文件.

import serial
from xmodem import XMODEM
import osdef Send_File(filepath, port='COM8', baudrate=115200):bn = os.path.basename(filepath)filesize = os.stat(filepath).st_sizestrSendFileCMD = "AFF_" + str(filesize) + "_" + bn + "\n"# 打开串口ser = serial.Serial(port, baudrate)# 定义YMODEM发送函数def send_ymodem(filename):def getc(size, timeout=1):return ser.read(size)def putc(data, timeout=1):return ser.write(data)modem = XMODEM(getc, putc)with open(filename, "rb") as f:status = modem.send(f)return status# 发送指令ser.write(strSendFileCMD.encode())# 发送文件status = send_ymodem(filepath)if status:print(f"文件发送成功：{filepath}")else:print(f"文件发送失败：{filepath}")# 关闭串口ser.close()def Recv_File(port='COM2', baudrate=115200):# 打开串口ser = serial.Serial(port, baudrate)# 定义YMODEM接收函数def recv_ymodem(filename):def getc(size, timeout=1):return ser.read(size) or Nonedef putc(data, timeout=1):return ser.write(data)modem = XMODEM(getc, putc)with open(filename, "wb") as f:status = modem.recv(f)return status# 循环监听指令while True:# 接收指令print("等待接收指令")strCMD = ser.read_until().strip().decode()print(strCMD)cmdlist = strCMD.split("_")cmd = cmdlist[0]filesize = cmdlist[1]filename = cmdlist[2]if cmd == "AFF":# 收到指令后开始接收文件print("开始接收文件")# 接收文件并保存status = recv_ymodem(filename)if status:print(f"文件接收成功：{filename}")else:print(f"文件接收失败：{filename}")# 继续监听指令continue# 其他指令print(f"收到指令：{cmd}")# 关闭串口ser.close()if __name__=="__main__":Send_File("D:/users.7z") #发送文件#Recv_File() #接收文件

上面是简单的文件传输代码.
我目前内外网传输最多的就是截图,内网通过串口给外网发送指令,外网根据指令截图,然后自动传回内网,不用切换电脑,不用插拔优盘,确实方便.