A Python interface to Arduino serial ports.
arduinoserial.py is a Python port of Tod E. Kurt’s arduino-serial.c program for communicating with an Arduino microcontroller board over a serial port. It only uses standard Python modules (notably termios and fcntl) and does not require any special serial communications modules.
Like Tod’s program, you can use it from the command line.
Send the string “a5050” to Arduino:
$ ./arduinoserial.py -b 19200 -p /dev/tty.usbserial-A50018fz -s a5050
This would cause the pan-tilt head described in the lemonodor post “Tilt” to return to its middle position.
Recieve a line of text from Arduino, wait 1000 milliseconds, then send the string “a0000”:
$ ./arduinoserial.py -b 19200 -p /dev/tty.usbserial-A50018fz -r -d 1000 -s a0000
Complete command line usage information:
Usage: arduinoserial.py -p <serialport> [OPTIONS] Options: -h, --help Print this help message. -p, --port=SERIALPORT Serial port Arduino is on. -b, --baud=BAUDRATE Baudrate (bps) of Arduino. -s, --send=DATA Send data to Arduino. -r, --receive Receive data from Arduino & print it out. -n --num=NUM Send a number as a single byte. -d --delay=MILLIS Delay for specified milliseconds. Note: Order is important. Set '-b' before doing '-p'. Used to make series of actions: '-d 2000 -s hello -d 100 -r' means 'wait 2 seconds, send 'hello', wait 100 msec, get reply'.
You can also import arduinoserial and use its SerialPort class to communicate with an Arduino from a Python program:
import arduinoserial arduino = arduinoserial.SerialPort('/dev/ttyUSB0', 19200) print arduino.read_until('\n') arduino.write('a5050')
Also see the lemonodor post “arduino_serial”.
Copyright (c) 2009 John Wiseman
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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