chainsawbike/python-nrf24

python-lib for interfacing with nRF24L01 modules

python-nrf24

python-lib for interfacing with nRF24L01 modules This is a port of the tinkerer.eu lib.

Introduction

The library is to be used with python2.

Requirements

• For SPI communication py-spidev: https://github.com/doceme/py-spidev.git
• For GPIO WiringPi2-Python: https://github.com/Gadgetoid/WiringPi2-Python.git

Wiring

   nRF24L01              RaspberryPi
+-+-+                    (header)      wiringpi-pins
|8|7|	1: GND      ->   6              -
+-+-+	2: 3.3V     ->   1              -
|6|5|	3: CE       ->   13             2
+-+-+	4: CSN      ->   15             3
|4|3|	5: SCKL     ->   23            14
+-+-+	6: MOSI     ->   19            12
|2|1|	7: MISO     ->   21            13
+-+-+	8: IRQ      ->   not used      not used

Example

For a sender:

from nrf24 import Nrf24
nrf = Nrf24(cePin=2,csnPin=3,channel=10,payload=8)
nrf.config()
nrf.setRADDR("host1")
nrf.setTADDR("host2")

if not nrf.isSending():
	nrf.send(map(ord,"Helloooo"))

For a receiver:

from nrf24 import Nrf24
nrf = Nrf24(cePin=2,csnPin=3,channel=10,payload=8)
nrf.config()
nrf.setRADDR("host2")
nrf.setTADDR("host1")

while True:
	if nrf.dataReady():
		print nrf.getData()
		break

Notes on Testing

Note that RX and TX addresses must match

Note that communication channels must match:

• python-nrf24: Set the channel parameter of the constructor
• arduino-mirf24: Set the channel in the example code

Note that payload size must match:

• python-nrf24: Set the payload parameter of the constructor
• arduino-mirf24: Adjust the payload in the example code

Mirf24 ping_server example adjustments

byte payload[8];
Mirf.payload = sizeof(payload);
Mirf.channel = 10;

Just an example :)