基于 pyserial 开发！
这个程序很简单，自动连接串口，发送一条指令后退出！
这个程序需要在Windows，和Ubuntu上面跑。
唯一改动的就是文件格式，需要转换为 unix 格式 vim 命令 set ff=unix
厉害的是 pyinstaller 居然可以在两个平台上无改动编译成功！太棒了！
配置文件 是json格式。一个字典内套一个字典！
statusLight.py：
实现串口通信
bpsList = [38400, 921600] 这个是波特率的集合，我们这个项目只用到这两种
[Python] 纯文本查看 复制代码 #!/usr/bin/env python3
# -*- coding: utf-8 -*-
import serial
import serial.tools.list_ports
import os
import sys
class StatusLight(object):
''' 连接串口，实现通信类 '''
# 兼容频率
bpsList = [38400, 921600]
# 端口
ports = serial.tools.list_ports.comports()
def __init__(self, sendStr, receive, timeout=0.2):
''' args:
sendStr 发送数据
reverse 接送数据
timeout 超时
# portn 端口
# bps 波特率
'''
self.portn = ""
self.bps = ""
self.sendStr = sendStr
self.receive = receive
self.timeout = timeout
self.serial = None # type pyserial.Serial
def _connect(self):
''' 连接串口 '''
result = True
try:
self.serial = serial.Serial(self.portn, self.bps, timeout=self.timeout)
self.checkDevice()
except Exception as e:
result = False
return result
def setInfo(self, portn, bps, timeout=0.2):
self.portn = portn
self.bps = bps
self.timeout = timeout
if not self._connect():
self.automaticAddressing()
def close(self):
''' 关闭串口通信 '''
self.serial.close()
def automaticAddressing(self):
'''
自动寻找设备
实现方法 发送 sendStr 接受返回 数据 与 receive 匹配
'''
breakFlag = False
for n in StatusLight.ports:
self.portn = n.device
for b in StatusLight.bpsList:
self.bps = b
if self._connect():
breakFlag = True
break
if breakFlag:
break
if breakFlag:
print('-' * 20)
print(f'Device = {self.portn}')
print(f'Baudrate = {self.bps}')
print('-' * 20)
else:
print("Failed to connect to serial device!")
sys.exit(1)
def checkDevice(self):
''' 验证设备 '''
self.write(self.sendStr)
serial.time.sleep(0.1)
byteDate = self.serial.read(1)
if byteDate != self.receive.encode('gbk'):
raise ValueError(f"check Device Failed: {send} not equal to {receive}")
def write(self, string):
''' 发送数据 '''
self.serial.reset_input_buffer() # 清空输入缓冲器（清空返回值）
self.serial.write(string.encode('gbk'))
def read(self, count=1):
''' 读取数据 count = 字节数'''
return self.serial.read(count)
if __name__ == "__main__":
ser = StatusLight('COM4', 38400)
ser.automaticAddressing()
print(ser.serial.write("b".encode('gbk')))
serial.time.sleep(0.5)
ser.serial.write("d".encode('gbk'))
ser.close()
RGBLight.py：
实现命令行、配置文件的解析
很丑，因为没有其它参数。。
[Python] 纯文本查看 复制代码 #!/usr/bin/env python3# -*- coding: utf-8 -*-
import json
import sys
import re
import os
from statusLight import StatusLight
# 命令行参数
configF = "statusLight"
sendStr = ""
version = 0.1
def errorPrint(string):
print("eg: exe -send=a")
print(string)
print(sys.argv)
sys.exit(1)
def parseCommandLine():
''' 解析命令行参数 '''
global sendStr, version
argv = sys.argv
# configFRex = re.compile("-configF=(.+)")
sendStrRex = re.compile("-send=(.+)")
if len(argv) <= 1:
print("eg: exe -send=a")
print(f"version: {version}")
print("Parse CommandLine Error !")
input("Type any key to exit!")
sys.exit(1)
for n in argv[1:]:
stripN = n.strip()
# res = configFRex.match(stripN)
# if res:
# configF = res.group(1)
res = sendStrRex.match(stripN)
if res:
sendStr = res.group(1)
if sendStr == "":
errorPrint("Parse CommandLine Error !")
parseCommandLine()
# 加载本地配置文件
if not os.path.exists(configF):
errorPrint(f"file does not exit: {configF}")
config = None
with open(configF, encoding='utf-8') as f:
config = json.load(f)
s = config['check'].get('s', None)
e = config['check'].get('e', None)
if s is None or e is None:
errorPrint("parse file fail!")
rgb = StatusLight(s, e)
rgb.automaticAddressing()
rgb.write(sendStr)
rgb.close()
sys.exit(0) | 
发表于 2021-11-4 18:05
|
发表于 2021-11-4 20:13
