#Copyright (c) 2010-11, Walter Bender, Tony Forster # # This Python block writes serial output to a USB port and pushes # serial input to the heap. # # To use this block: # (1) import this file into a Python Block; # (2) pass text strings as an argument # (3) use a Pop Block to retrieve any strings input from serial device. def myblock(tw, x): # x is the string to transmit import serial # you may need to install this library # serial device on USB, 9600 baud ser = serial.Serial('/dev/ttyUSB0', 9600, timeout=1) ser.write(str(x)) # send string x st = ser.read(1000) # read up to 1000 bytes tw.lc.heap.append(st) # append to heap ser.close()