CircuitPython library for RFM69 packet radio.
CircuitPython RFM69 packet radio module. This supports basic RadioHead-compatible sending and receiving of packets with RFM69 series radios (433/915Mhz).
This does NOT support advanced RadioHead features like guaranteed delivery–only ‘raw’ packets are currently supported.
This is NOT for LoRa radios!
This is a ‘best effort’ at receiving data using pure Python code–there is not interrupt support so you might lose packets if they’re sent too quickly for the board to process them. You will have the most luck using this in simple low bandwidth scenarios like sending and receiving a 60 byte packet at a time–don’t try to receive many kilobytes of data at a time!
This driver depends on:
Please ensure all dependencies are available on the CircuitPython filesystem. This is easily achieved by downloading the Adafruit library and driver bundle.
Installing from PyPI
On supported GNU/Linux systems like the Raspberry Pi, you can install the driver locally from PyPI. To install for current user:
pip3 install adafruit-circuitpython-rfm69
To install system-wide (this may be required in some cases):
sudo pip3 install adafruit-circuitpython-rfm69
To install in a virtual environment in your current project:
mkdir project-name && cd project-name python3 -m venv .env source .env/bin/activate pip3 install adafruit-circuitpython-rfm69
See examples/rfm69_simpletest.py for a simple demo of the usage. Note: the default baudrate for the SPI is 5000000 (5MHz). The maximum setting is 10Mhz but transmission errors have been observed expecially when using breakout boards. For breakout boards or other configurations where the boards are separated, it may be necessary to reduce the baudrate for reliable data transmission. The baud rate may be specified as an keyword parameter when initializing the board. To set it to 1000000 use :
# Initialze RFM radio rfm9x = adafruit_rfm9x.RFM9x(spi, CS, RESET, RADIO_FREQ_MHZ,baudrate=1000000)
Contributions are welcome! Please read our Code of Conduct before contributing to help this project stay welcoming.
For information on building library documentation, please check out this guide.
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