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-#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()