Using Python to debug the serial port

Serial port module baud rate is very special, find a few serial tools are not supported ... So, simply use Python to write their own, in fact, have been curious for a long time, the tools of others are not handy.

Requires pyserial support, compatible with a variety of platforms, and does not require new binaries to be compiled.

First, put a timed send code:

ImportSerialImportTimeser= Serial. Serial ('/dev/ttyusb0', 250000, Timeout=1)PrintSer.isopen () words='\x72\x02\x02\x52\x02\x12\x02\x02\x42\x02\x62\02' while(1):        Print "Send"+words+"To remotes"s=Ser.write (words) time.sleep (5) Ser.close ()

Then there are some other ways:

1. Use serial number to open the serial port: ser = serial. Serial (0). But, how to determine the serial number???

2. Look at the name of the serial port, Aha, using the 1 method to open the serial port, you can produce the name of the serial port: print Ser.portstr

3. Precedent an entity, then open:

>>> ser = serial. Serial ()>>> ser.baudrate = 19200>>> Ser.port = 0>>> serserial<id =0XA81C10, open=false> (port='COM1', baudrate=19200, bytesize=8, parity=' N ', Stopbits=1, Timeout=none, xonxoff=0, rtscts=0)>>> ser.open ()>>> Ser.isopen () True>>> ser.close ()>>> ser.isopen () False

4. Centralized way to read data

>>> ser = serial. Serial ('/dev/ttys1', 19200, timeout=1)>>> x = Ser.read ()          #  read one byte>>> s = ser.read (Ten)        #  read up to ten bytes (timeout)>>&G T line = Ser.readline ()   #  read a '/n ' terminatedline >>> ser.close ()

In which, if just serial debugging, direct Ser.read (1000), this will read the value of the direct printing to the screen.

5. All parameters

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 createdbaudrate=9600,#baud RateBytesize=eightbits,#Number of databitsParity=parity_none,#Enable parity checkingStopbits=stopbits_one,#Number of StopBitsTimeout=none,#set a timeout value, None for waiting ForeverXonxoff=0,#enable software flow controlRtscts=0,#Enable Rts/cts flow controlInterchartimeout=none#inter-character Timeout, None to disable)

6. Exception:serial. Serialexception

Using Python to debug the serial port