enControl/enControl.py at main · ragebflame/enControl · GitHub

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#!flask/bin/python
from flask import Flask, jsonify, abort, make_response, request
import RPi.GPIO as GPIO
import time

app = Flask(__name__)

# Mapping a dictionary of gpio values as json
gpio_values = {
    "switch": [
        {
            "id": u"1",
            "command": [
                {"on": [True, True, True, True], "off": [True, True, True, False]}
            ],
        },
        {
            "id": u"2",
            "command": [
                {"on": [False, True, True, True], "off": [False, True, True, False]}
            ],
        },
        {
            "id": u"3",
            "command": [
                {"on": [True, False, True, True], "off": [True, False, True, False]}
            ],
        },
        {
            "id": u"4",
            "command": [
                {"on": [False, False, True, True], "off": [False, False, True, False]}
            ],
        },
        {
            "id": u"all",
            "command": [
                {"on": [True, True, False, True], "off": [True, True, False, False]}
            ],
        },
    ]
}


# Return the gpio_pins dictionary
@app.route("/energenie-control/api/v1.0/gpio_pins", methods=["GET"])
def get_gpio_pins():
    return jsonify({"Everything": "is okay"})


# Return info on particular switch
@app.route("/energenie-control/api/v1.0/gpio_pins/<switch_id>", methods=["GET"])
def get_switch(switch_id):
    switch = [switch for switch in gpio_values["switch"] if switch["id"] == switch_id]

    if len(switch) == 0:
        abort(404)
    return jsonify({"switch": switch[0]})


# Send command to specified switch
@app.route("/energenie-control/api/v1.0/gpio_pins", methods=["POST"])
def post_command():
    # verify and sanitize the received json
    if not request.json or "id" not in request.json or "command" not in request.json:
        abort(400)

    parsed_switch_id = request.json["id"]
    parsed_switch_command = request.json["command"]

    for switch in gpio_values["switch"]:
        if switch["id"] == parsed_switch_id:
            for commands in switch["command"]:
                data_mapping = commands[parsed_switch_command]

    if len(data_mapping) == 0:
        abort(500)

    print(data_mapping)

    # Send command to the switch
    trigger_switch(data_mapping)

    # Return an OK
    return jsonify(request.json), 202


# handle 404 errors gracefully
@app.errorhandler(404)
def not_found(error):
    return make_response(jsonify({"error": "Not found"}), 404)


# Function that sends the command to the pins
def trigger_switch(data_mapping):
    GPIO.setmode(GPIO.BOARD)  # set the pins numbering mode

    # Select each of the GPIO pins needed
    needed_pins = [11, 15, 16, 13, 18, 22]
    data_pins = [11, 15, 16, 13]
    GPIO.setup(needed_pins, GPIO.OUT)  # Default all pin values to lo / 0
    GPIO.output(needed_pins, False)
    try:  # Loop to map all GPIO.outputs# Set K0 - K3(aka D0 - D3)
        for i in range(0, len(data_pins)):
            GPIO.output(data_pins[i], data_mapping[i])

        time.sleep(0.25)  # let it settle, encoder requires this
        GPIO.output(22, True)  # Enable the modulator
        time.sleep(0.25)  # keep enabled for a period
        GPIO.output(22, False)  # Disable the modulator
    except Exception:
        print("Error trying to send the command. Exiting.")
        abort(500)

    # Clean up the GPIOs for next time
    GPIO.cleanup()
    print("Command sent sucessfully!")


if __name__ == "__main__":
    app.run(host="0.0.0.0", port=80)