added rasberry pi 3 example

Author: Girgitt

raspi_example_main.py

@@ -0,0 +1,38 @@
+from pjon_python.base_client import PjonBaseSerialClient
+import time
+
+# load serial2pjon_proxy_v5_1 to arduino
+# adjust serial port below to match your arduino's port
+# run this example; expected output:
+#
+# pakets in outgoing queue: 0
+# received from 35 payload: [66, 49, 50, 51, 52, 53, 54, 55, 56, 57]
+# pakets in outgoing queue: 0
+# pakets in outgoing queue: 0
+# received from 35 payload: [66, 49, 50, 51, 52, 53, 54, 55, 56, 57]
+# pakets in outgoing queue: 0
+#
+
+cli = PjonBaseSerialClient(1, '/dev/ttyUSB1', write_timeout=0.005, timeout=0.005)
+
+
+def error_handler(self, error_code=0, parameter=0):
+    error_text = "code: %s, parameter: %s" % (error_code, parameter)
+    if error_code == 101:
+        error_text = "connection lost to node: %s" % parameter
+    elif error_code == 101:
+        error_text = "outgoing buffer full"
+
+    if error_code > 0:
+        print(error_text)
+
+def receive_handler(payload, packet_length, packet_info):
+    print "received from %s payload: %s" % (packet_info.sender_id, payload)
+
+cli.set_receive(receive_handler)
+cli.set_error(error_handler)
+cli.start_client()
+
+while True:
+    print "pakets in outgoing queue: %s" % cli.send(35, "C123")
+    time.sleep(.1)