adds helloworld_rx.python3.py

RPi/pyRF24Network/examples/helloworld_rx.python3.py

@@ -0,0 +1,55 @@
+#!/usr/bin/env python
+
+#
+# Simplest possible example of using RF24Network,
+#
+#  RECEIVER NODE
+#  Listens for messages from the transmitter and prints them out.
+#
+
+import time
+from struct import *
+from RF24 import *
+from RF24Network import *
+
+# CE Pin, CSN Pin, SPI Speed
+
+# Setup for GPIO 22 CE and GPIO 25 CSN with SPI Speed @ 1Mhz
+#radio = radio(RPI_V2_GPIO_P1_22, RPI_V2_GPIO_P1_18, BCM2835_SPI_SPEED_1MHZ)
+
+# Setup for GPIO 22 CE and CE0 CSN with SPI Speed @ 4Mhz
+#radio = RF24(RPI_V2_GPIO_P1_15, BCM2835_SPI_CS0, BCM2835_SPI_SPEED_4MHZ)
+
+# Setup for GPIO 22 CE and CE1 CSN with SPI Speed @ 8Mhz
+#radio = RF24(RPI_V2_GPIO_P1_15, BCM2835_SPI_CS0, BCM2835_SPI_SPEED_8MHZ)
+
+# Setup for GPIO 22 CE and CE0 CSN for RPi B+ with SPI Speed @ 8Mhz
+radio = RF24(RPI_BPLUS_GPIO_J8_22, RPI_BPLUS_GPIO_J8_24, BCM2835_SPI_SPEED_8MHZ)
+
+network = RF24Network(radio)
+
+# Address of our node in Octal format (01,021, etc)
+this_node = 0o0
+
+# Address of the other node
+other_node = 0o1
+
+interval = 2000     #ms -  How often to send 'hello world' to the other unit
+
+millis = lambda: int(round(time.time() * 1000))
+
+radio.begin()
+time.sleep(0.1)
+network.begin(90, this_node)    # channel 90
+radio.printDetails()
+packets_sent = 0
+last_sent = 0
+
+while 1:
+    network.update()
+    while network.available():
+        header, payload = network.read(12)
+        ms, number = unpack('<qi', payload)
+        print('Received payload # ', number, ' at ', ms, ' from ', oct(header.from_node))
+    time.sleep(1)
+