如何在python的串行端口上编写ttyUSB0将被解释为命令?
我有树莓皮B+与通过USB连接的Telegesis ZigBee模块(ETRX3 U盘)。使用命令:如何在python的串行端口上编写ttyUSB0将被解释为命令?,python,linux,serial-port,raspberry-pi,zigbee,Python,Linux,Serial Port,Raspberry Pi,Zigbee,我有树莓皮B+与通过USB连接的Telegesis ZigBee模块(ETRX3 U盘)。使用命令: debian:~# stty -F /dev/ttyUSB0 -raw ispeed 19200 ospeed 19200 debian:~# cat < /dev/ttyUSB0 & debian:~# echo "ATI" > /dev/ttyUSB0 我想用python脚本做同样的事情。我是用以下代码编写python脚本的: #!/us
debian:~# stty -F /dev/ttyUSB0 -raw ispeed 19200 ospeed 19200
debian:~# cat < /dev/ttyUSB0 &
debian:~# echo "ATI" > /dev/ttyUSB0
我想用python脚本做同样的事情。我是用以下代码编写python脚本的:
#!/usr/bin/env python
# based on tutorials:
# http://www.roman10.net/serial-port-communication-in-python/
# http://www.brettdangerfield.com/post/raspberrypi_tempature_monitor_project/
import serial, time
SERIALPORT = "/dev/ttyUSB0"
BAUDRATE = 19200
ser = serial.Serial(SERIALPORT, BAUDRATE)
ser.bytesize = serial.EIGHTBITS #number of bits per bytes
ser.parity = serial.PARITY_NONE #set parity check: no parity
ser.stopbits = serial.STOPBITS_ONE #number of stop bits
#ser.timeout = None #block read
#ser.timeout = 0 #non-block read
ser.timeout = 2 #timeout block read
ser.xonxoff = False #disable software flow control
ser.rtscts = False #disable hardware (RTS/CTS) flow control
ser.dsrdtr = False #disable hardware (DSR/DTR) flow control
ser.writeTimeout = 0 #timeout for write
print 'Starting Up Serial Monitor'
try:
ser.open()
except Exception, e:
print "error open serial port: " + str(e)
exit()
if ser.isOpen():
try:
ser.flushInput() #flush input buffer, discarding all its contents
ser.flushOutput()#flush output buffer, aborting current output
ser.write("ATI")
print("write data: ATI")
time.sleep(0.5)
numberOfLine = 0
while True:
response = ser.readline()
print("read data: " + response)
numberOfLine = numberOfLine + 1
if (numberOfLine >= 5):
break
ser.close()
except Exception, e:
print "error communicating...: " + str(e)
else:
print "cannot open serial port "
并获得屏幕上显示的结果
ATI
但我希望命令由ZigBee模块执行,就像shell命令一样。我做错了什么
ser.write(“ATI\r\n”)
ser.timeout=None
ATI