Hardcode RF Codes - RPi-RF

Question

I would like to use the rpi-rf module https://pypi.org/project/rpi-rf/ for a remote control alert system, using a PIR motion sensor as the input.

I have so far set up the PIR input and send and receive modules, and have no problem sending data packets from the terminal. Where I am running into trouble is that I cannot find any documentation on how to hardcode the RF Code that I need to send to activate a specific device so I can automate the system.

I've searched all the documentation I can find - https://github.com/milaq/rpi-rf

This is the code for the "Send" module:

#!/usr/bin/env python3

import argparse
import logging

from rpi_rf import RFDevice

logging.basicConfig(level=logging.INFO, datefmt='%Y-%m-%d %H:%M:%S',
                    format='%(asctime)-15s - [%(levelname)s] %(module)s: %(message)s',)

parser = argparse.ArgumentParser(description='Sends a decimal code via a 433/315MHz GPIO device')
parser.add_argument('code', metavar='CODE', type=int,
                    help="Decimal code to send")
parser.add_argument('-g', dest='gpio', type=int, default=17,
                    help="GPIO pin (Default: 17)")
parser.add_argument('-p', dest='pulselength', type=int, default=None,
                    help="Pulselength (Default: 350)")
parser.add_argument('-t', dest='protocol', type=int, default=None,
                    help="Protocol (Default: 1)")
parser.add_argument('-l', dest='length', type=int, default=None,
                    help="Codelength (Default: 24)")
parser.add_argument('-r', dest='repeat', type=int, default=10,
                    help="Repeat cycles (Default: 10)")
args = parser.parse_args()

rfdevice = RFDevice(args.gpio)
rfdevice.enable_tx()
rfdevice.tx_repeat = args.repeat

if args.protocol:
    protocol = args.protocol
else:
    protocol = "default"
if args.pulselength:
    pulselength = args.pulselength
else:
    pulselength = "default"
if args.length:
    length = args.length
else:
    length = "default"

logging.info(str(args.code) +
             " [protocol: " + str(protocol) +
             ", pulselength: " + str(pulselength) +
             ", length: " + str(length) +
             ", repeat: " + str(rfdevice.tx_repeat) + "]")

rfdevice.tx_code(args.code, args.protocol, args.pulselength, args.length)
rfdevice.cleanup()

Can anybody out there tell me how to hardcode the RF Code that I need to send to activate a specific device so I can automate the system?

Answer 1

Ok, figured it out... well at least a work around. Instead of trying to change the variables within the send.py script, you can use the subprocess library to execute the script when required and pass the arguments to it.

Simply by adding:

import subprocess 

subprocess.Popen(['python','send.py','-p','174','-t','1','123456'])