SerialThread 使用方法
时间: 2024-05-15 12:19:11 浏览: 1
SerialThread 是一个多线程串口通信类,可以在其实例化之后,通过方法调用来进行串口数据的发送和接收操作。具体使用方法如下:
1. 实例化SerialThread类,通过构造函数指定串口名称、波特率、数据位、停止位、校验位等参数;
2. 调用SerialThread类的connect方法,建立串口连接;
3. 调用SerialThread类的send方法,向串口发送数据;
4. 调用SerialThread类的receive方法,从串口接收数据。
以下是示例代码:
```python
import serial
import threading
class SerialThread(threading.Thread):
def __init__(self, port, baudrate, bytesize, parity, stopbits):
super(SerialThread, self).__init__()
self.port = port
self.baudrate = baudrate
self.bytesize = bytesize
self.parity = parity
self.stopbits = stopbits
self.ser = None
self.alive = False
def connect(self):
if not self.alive:
self.ser = serial.Serial(self.port, self.baudrate, self.bytesize,
self.parity, self.stopbits)
self.alive = True
def disconnect(self):
if self.alive:
self.ser.close()
self.alive = False
def send(self, data):
self.ser.write(data.encode())
def receive(self):
data = self.ser.readline().decode()
return data.strip()
if __name__ == '__main__':
serial_thread = SerialThread('COM1', 9600, serial.EIGHTBITS,
serial.PARITY_NONE, serial.STOPBITS_ONE)
serial_thread.connect()
serial_thread.send('hello world')
print(serial_thread.receive())
serial_thread.disconnect()
```
该示例代码中实例化了一个SerialThread对象,连接了COM1串口,并向串口发送了"hello world"字符串,并从串口接收数据并输出。