依次摆放了combox、push button以及Text Edit,更改button的名字为搜索和打开,如下所示: 并依次将控件命名为cb_comname、btn_search、btn_open以及txt_show 为了将控件摆放整齐,选择cb_comname、btn_search、btn_open,右键-》Lay Out-》Lay Out Horizontally,如下图所示: 接着点击保存,在pythonwork的目录下新建文件...
self.open() File "C:\Python27\lib\site-packages\serial\serialwin32.py", line 62, in open raise SerialException("could not open port {!r}: {!r}".format(self.portstr, ctypes.WinError())) serial.serialutil.SerialException: could not open port '6': WindowsError(2, 'The system cannot f...
#读取10s串口数据后关闭这个串口importtimedefread_serial(port, baudrate, duration):try:#初始化串口ser =serial.Serial(port, baudrate)print(f"Opened serial port {port} at {baudrate} baud.")#记录开始时间start_time =time.time()#持续读取数据直到指定的时间(10秒)到达whiletime.time() - start_time...
下面是监视串口数据的步骤: Start --> OpenSerialPort OpenSerialPort --> MonitorSerialData MonitorSerialData --> End 1. 2. 3. 打开串口 首先,我们需要使用Python的serial库打开串口。可以通过指定串口号、波特率等参数来打开串口。 importserial ser=serial.Serial('COM1',9600)# 打开串口COM1,波特率为9600...
Serial<id=0x3518940, open=True>(port='COM3', baudrate=115200, bytesize=8, parity='N', stopbits=1, timeout=None, xonxoff=False, rtscts=False, dsrdtr=False) 4、发送数据 函数名write() 返回值为发送成功的字节数 #encoding=utf-8importserialif__name__=='__main__': ...
%ser except serial.serialutil.SerialException: print "The port is at use" ser.close() ser.open() while ser.read(): print "Sending data" ser.setBreak(True) time.sleep(0.2) ser.sendBreak(duration = 0.02) time.sleep(0.2) ser.close() time.sleep(0.2) print "The port is closed" exit(...
(port,bps,timeout):try:# 打开串口,并返回串口对象uart=serial.Serial(port,bps,timeout=timeout)returnuartexceptExceptionasresult:print("can not open uart")print(result)returnFalse# 发送数据defuart_send_data(uart,txbuf):len=uart.write(txbuf.encode('utf-8'))# 写数据returnlen# 接收数据defuart_...
(单位为秒)20 def DOpenPort(portx,bps,timeout):21 ret=False22 try:23 # 打开串口,并得到串口对象24 ser = serial.Serial(portx, bps, timeout=timeout)25 #判断是否打开成功26 if(ser.is_open):27 ret=True28 threading.Thread(target=ReadData, args=(ser,)).start()29 except Exception as e...
if port_name in [port.device for port in ports]: try: # 尝试打开串口 ser = serial.Serial(port_name) if ser.is_open: status_code = 1 status_desc = "串口已打开" # 可以继续添加对串口是否正在监听、接收、发送数据的检查 # ...
self.serial_handler.parity = parity self.serial_handler.stopbits = stopbits # 连接若超时1秒,则结束连接 self.serial_handler.timeout = 15 def open_and_write(self): ''' # PELCO-D协议: 一、数据格式: 8位数据位、1位停止位,无效验位。波特率:2400 ...