Exemplo n.º 1
0
import virtGPIO as GPIO
from lib_nrf24 import NRF24
import time

pipes = [[0xe7, 0xe7, 0xe7, 0xe7, 0xe7], [0xc2, 0xc2, 0xc2, 0xc2, 0xc2]]

# Comment re multiple SPIDEV devices:
# Official spidev documentation is sketchy. Implementation in virtGPIO allows multiple SpiDev() objects.
# This may not work on RPi? Probably RPi uses alternating open() / xfer2() /close() within one SpiDev() object???
# On virtGPIO each of multiple SpiDev() stores its own mode and cePin. Multiple RF24 used here becomes easy.
# This issue affects only using MULTIPLE Spi devices.

##################################################################
# SET UP RADIO1 - PTX

radio1 = NRF24(GPIO, GPIO.SpiDev())
radio1.begin(9)  # SPI-CE=RF24-CSN=pin9, no RF24-CE pin
time.sleep(1)
radio1.setRetries(15, 15)
radio1.setPayloadSize(32)
radio1.setChannel(0x62)
radio1.setDataRate(NRF24.BR_2MBPS)
radio1.setPALevel(NRF24.PA_MIN)
radio1.setAutoAck(True)
radio1.enableDynamicPayloads()
radio1.enableAckPayload()

radio1.openWritingPipe(pipes[1])
radio1.openReadingPipe(1, pipes[0])

if not radio1.isPVariant():
Exemplo n.º 2
0
#!/usr/bin/python
# -*- coding: utf-8 -*-
#
# Example program to send packets to the radio link
#

import virtGPIO as GPIO
from lib_nrf24 import NRF24
import time

pipes = [[0xe7, 0xe7, 0xe7, 0xe7, 0xe7], [0xc2, 0xc2, 0xc2, 0xc2, 0xc2]]

radio = NRF24(GPIO, GPIO.SpiDev())
radio.begin(10, 8)  #Set spi-ce pin10, and rf24-CE pin 8
time.sleep(1)
radio.setRetries(15, 15)
radio.setPayloadSize(32)
radio.setChannel(0x60)

radio.setDataRate(NRF24.BR_2MBPS)
radio.setPALevel(NRF24.PA_MIN)
radio.setAutoAck(True)
radio.enableDynamicPayloads()
radio.enableAckPayload()

radio.openWritingPipe(pipes[1])
radio.openReadingPipe(1, pipes[0])
radio.printDetails()

c = 1
while True:
Exemplo n.º 3
0
#         That sends all SPI serial output (MOSI) back into the input (MISO)
#         (We will just pretend we have real SPI devices connected to our bus.)

import time

import virtGPIO as GPIO

print "Read comments in source file"

GPIO.setActivityLed(0)  # optional
# The SpiDev() will fail if all 4 needed pins are not free (11, 12, 13, plus CE pin)
# Pin13 is the default activityLed. Pin13 is also the SPI clock pin.
# However as "true" owner of pin13, SPI will knock off the activityLed if that is the only problem.
# See example-activityLed.py and example-diagnostic.py

SPI = GPIO.SpiDev(10)  # Initialise one SPI channel using pin 10 as its CE pin
# "CE" is variously known as SS (slave select), CS (chip select) or CE (chip enable)
# and also often written with a "*" or a "N" (eg SS* or CSN) denoting -ve logic: LOW active

SPI2 = GPIO.SpiDev(
    8)  # So let's prepare for another SPI device using pin 8 as CE

while True:
    print "SPI xfer on CE=10", SPI.xfer2(
        [55, 6, 6, 6, 6, 6, 6, 6, 6, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 0, 0, 8])

    print "SPI xfer on CE=8", SPI2.xfer2([74])

    time.sleep(8)

    # So?  Expect to simply see those (byte) number lists as above returned from the arduino.