From 0996701c39695e24fbb4992471ba5298f52a4fe6 Mon Sep 17 00:00:00 2001
From: Walter Bender <walter.bender@gmail.com>
Date: Wed, 05 Oct 2011 12:21:23 +0000
Subject: adding new example code for using serial device

---
diff --git a/pysamples/serial.py b/pysamples/serial.py
new file mode 100644
index 0000000..153bf90
--- /dev/null
+++ b/pysamples/serial.py
@@ -0,0 +1,21 @@
+#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()
--
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