GeislingerProject/lib/sainsmartrelay.py

import subprocess

class SainsmartRelay:
    def __init__(self, executable="sainsmartrelay"):
        self.executable = executable

    def _run_command(self, args):
        try:
            result = subprocess.run(
                [self.executable] + args,
                stdout=subprocess.PIPE,
                stderr=subprocess.PIPE,
                text=True,
                check=True
            )
            return result.stdout.strip()
        except subprocess.CalledProcessError as e:
            print(f"Error: {e.stderr.strip()}")
            return None

    def turn_on(self, relays):
        """Turn on specified relays."""
        relays_str = ','.join(map(str, relays)) if isinstance(relays, (list, tuple)) else str(relays)
        return self._run_command(["--on", relays_str])

    def turn_off(self, relays):
        """Turn off specified relays."""
        relays_str = ','.join(map(str, relays)) if isinstance(relays, (list, tuple)) else str(relays)
        return self._run_command(["--off", relays_str])

    def get_status(self, relays="all"):
        """Get the status of specified relays."""
        return self._run_command(["--status", str(relays)])

    def find_all_devices(self):
        """Find all connected FTDI devices."""
        return self._run_command(["--findall"])

# Example usage:
if __name__ == "__main__":
    relay = SainsmartRelay()

    # Turn on relay 1
    print(relay.turn_on(1))

    # Turn off all relays
    print(relay.turn_off("all"))

    # Get the status of all relays
    print(relay.get_status())

    # Find all FTDI devices
    print(relay.find_all_devices())