112 lines
3.0 KiB
Python
112 lines
3.0 KiB
Python
# SPDX-FileCopyrightText: 2018 Brent Rubell for Adafruit Industries
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#
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# SPDX-License-Identifier: MIT
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"""
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Example for using the RFM69HCW Radio with Raspberry Pi.
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Learn Guide: https://learn.adafruit.com/lora-and-lorawan-for-raspberry-pi
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Author: Brent Rubell for Adafruit Industries
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"""
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from datetime import datetime
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# Import Python System Libraries
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import time
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from datetime import datetime
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# Import Blinka Libraries
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import busio
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from digitalio import DigitalInOut, Direction, Pull
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import board
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# Import the SSD1306 module.
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# import adafruit_ssd1306
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# Import the RFM69 radio module.
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import adafruit_rfm69
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# import numpy as np
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import ctypes
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import struct
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import pickle
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import os
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# # Button A
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# btnA = DigitalInOut(board.D5)
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# btnA.direction = Direction.INPUT
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# btnA.pull = Pull.UP
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# # Button B
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# btnB = DigitalInOut(board.D6)
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# btnB.direction = Direction.INPUT
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# btnB.pull = Pull.UP
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# # Button C
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# btnC = DigitalInOut(board.D12)
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# btnC.direction = Direction.INPUT
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# btnC.pull = Pull.UP
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# # Create the I2C interface.
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# i2c = busio.I2C(board.SCL, board.SDA)
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# # 128x32 OLED Display
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# reset_pin = DigitalInOut(board.D4)
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# display = adafruit_ssd1306.SSD1306_I2C(128, 32, i2c, reset=reset_pin)
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# # Clear the display.
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# display.fill(0)
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# display.show()
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# width = display.width
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# height = display.height
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# Configure Packet Radio
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CS = DigitalInOut(board.CE1)
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RESET = DigitalInOut(board.D25)
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spi = busio.SPI(board.SCK, MOSI=board.MOSI, MISO=board.MISO)
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rfm69 = adafruit_rfm69.RFM69(spi, CS, RESET, 434.0, high_power=True)
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prev_packet = None
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# Optionally set an encryption key (16 byte AES key). MUST match both
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# on the transmitter and receiver (or be set to None to disable/the default).
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# rfm69.encryption_key = b'\x01\x02\x03\x04\x05\x06\x07\x08\x01\x02\x03\x04\x05\x06\x07\x08'
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rfm69.encryption_key = None;
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rfm69.tx_power=20;
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def unpack_uint8(m):
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return struct.unpack('B'*len(m), m)
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def send_now():
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rfm69.idle()
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n = datetime.now()
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add_this = [n.second,n.minute,n.hour,n.day,n.month,n.year-2000,n.isoweekday()]
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b_ar = bytearray();
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for x in add_this:
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b_ar += ctypes.c_uint8(x)
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msg_send = b_ar;
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for i in range(3):
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rfm69.send(msg_send, flags=2, keep_listening = True); # Date time return request
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time.sleep(0.05);
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print('SENT:\t\t',unpack_uint8(msg_send))
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# print("Sent!", add_this);
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send_now();
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while True:
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# send_now();
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packet = None
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packet = rfm69.receive(with_header = True)
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if packet is not None:
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# = packet
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print('====================================')
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print('RECEIVED:\t',unpack_uint8(packet))
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packet_flag = packet[3]
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print('FLAG:\t',packet_flag)
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if packet_flag == 1:
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send_now();
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if packet_flag == 31:
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if not os.path.exists('packet_dump'):
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pickle.dump(packet, open('packet_dump','wb'));
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# print(packet_flag, prev_packet);
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# packet_text = str(prev_packet[4:], "utf-8")
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# print(packet_text)
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# time.sleep(0.01)
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