Python 串口通讯
摘要: pyserial module:?https://github.com/tbusf/pyserial Python使用pyserial进行串口通信:http://blog.csdn.net/log1100/article/details/54380325 串口通讯的python模块——pySerial?:http://blog.csdn.net/dainiao01/article/details/5885122 ? ? Parameters for the Serial class ser = serial.Serial(
port=None,# number of device,numbering starts at # zero. if everything fails,the user # can specify a device string,note # that this isn‘t portable anymore # if no port is specified an unconfigured # an closed serial port object is created baudrate=9600,# baud rate bytesize=EIGHTBITS,# number of databits parity=PARITY_NONE,# enable parity checking stopbits=STOPBITS_ONE,# number of stopbits timeout=None,# set a timeout value,None for waiting forever xonxoff=0,# enable software flow control rtscts=0,# enable RTS/CTS flow control interCharTimeout=None # Inter-character timeout,None to disable )
Methods of Serial instances open() # open port close() # close port immediately setBaudrate(baudrate) # change baud rate on an open port inWaiting() # return the number of chars in the receive buffer read(size=1) # read "size" characters write(s) # write the string s to the port flushInput() # flush input buffer,discarding all it‘s contents flushOutput() # flush output buffer,abort output sendBreak() # send break condition setRTS(level=1) # set RTS line to specified logic level setDTR(level=1) # set DTR line to specified logic level getCTS() # return the state of the CTS line getDSR() # return the state of the DSR line getRI() # return the state of the RI line getCD() # return the state of the CD line
Attributes of Serial instances portstr # device name BAUDRATES # list of valid baudrates BYTESIZES # list of valid byte sizes PARITIES # list of valid parities STOPBITS # list of valid stop bit widths
New values can be assigned to the following attributes,the port will be reconfigured,even if it’s opened at that time:(即使是打开的情况下也会重新配置???liub) port # port name/number as set by the user baudrate # current baud rate setting bytesize # byte size in bits parity # parity setting stopbits # stop bit with (1,2) timeout # timeout setting xonxoff # if Xon/Xoff flow control is enabled rtscts # if hardware flow control is enabled
居然还有这么多好东西,看看下面: TCP/IP – serial bridgeThis program opens a TCP/IP port. When a connection is made to that port (e.g. with telnet) it forwards all data to the serial port and vice versa. This example only exports a raw socket connection. The next example below gives the client much more control over the remote serial port.
? ? 打开一个python shell import serial导入模块 然后就可以用了 ser = serial.Serial(0) 是打开第一个串口 print ser.portstr 能看到第一个串口的标识,windows下是COM1 ser.write(“hello") 就是往串口里面写数据 ser.close() 就是关闭ser表示的串口 ser.open() 会打开这个串口 ser = serial.Serial(‘COM1‘,115200) 来设置波特率,当然还有专门的函数 data = ser.read()可以读一个字符 data = ser.read(20) 是读20个字符 data = ser.readline() 是读一行,以/n结束,要是没有/n就一直读,阻塞。 data = ser.readlines()和ser.xreadlines()都需要设置超时时间 ser.baudrate = 9600 设置波特率 ser 来查看当前串口的状态 ser.isOpen() 看看这个串口是否已经被打开 ? import pyserial t=serial.Serial() t.port = 3 t.baudrate = 115200 t.open() t.write(chr(0x03)) #向串口输入ctrl+c (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |