'''
@ author: summer
@ tools: pycharm 
@ content: 串口通讯实现类
@ date: 2020年2月12日
'''
import serial
import serial.tools.list_ports

class SerialAchieve:
 def __init__(self,band=115200,check="无校验位",data=8,stop=1):
 self.port = None
 # 获取可用串口
 self.port_list = list(serial.tools.list_ports.comports())
 assert (len(self.port_list) != 0),"无可用串口"

 self.bandRate = band
 self.checkbit = check
 self.databit = data
 self.stopbit = stop

 # 读写的数据
 self.read_data = None
 self.write_data = None

 pass
 def show_port(self):
 for i in range(0,len(self.port_list)):
 print(self.port_list[i])

 def show_other(self):
 print("波特率:"+self.bandRate)
 print("校验位:" + self.checkbit)
 print("数据位:" + self.databit)
 print("停止位:" + self.stopbit)
 # 返回串口
 def get_port(self):
 return self.port_list
 # 打开串口
 def open_port(self,port):
 self.port = serial.Serial(port, self.bandRate,timeout = None)

 def delete_port(self):
 if self.port != None:
 self.port.close()
 print("关闭串口完成")
 else:
 pass

 def Read_data(self): # self.port.read(self.port.in_waiting) 表示全部接收串口中的数据
 self.read_data = self.port.read(self.port.in_waiting) # 读取数据
 return self.read_data.decode("utf-8")

 def Write_data(self,data):
 if self.port.isOpen() == False:
 print("串口打开错误")
 else:
 self.port.write(data.encode("utf-8")) # 返回的是写入的字节数

if __name__ == '__main__':
 myser = SerialAchieve()
 myser.open_port("COM7")
 myser.delete_port()
 myser.show_port()