touch_input_wifi_aio.py

"""
 Copyright (c) 2022 Alan Yorinks All rights reserved.

 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
 Version 3 as published by the Free Software Foundation; either
 or (at your option) any later version.
 This library is distributed in the hope that it will be useful,f
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 General Public License for more details.

 You should have received a copy of the GNU AFFERO GENERAL PUBLIC LICENSE
 along with this library; if not, write to the Free Software
 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

 DHT support courtesy of Martyn Wheeler
 Based on the DHTNew library - https://github.com/RobTillaart/DHTNew
"""

import asyncio
import sys
import time

from telemetrix_aio_esp32 import telemetrix_aio_esp32

"""
Setup a pin for touch input and monitor its changes
"""

# IP address assigned to the ESP32
IP_ADDRESS = '192.168.2.232'

TOUCH_PIN = 13

# Callback data indices
CB_PIN_MODE = 0
CB_PIN = 1
CB_VALUE = 2
CB_TIME = 3


async def the_callback(data):
    """
    A callback function to report data changes.
    This will print the pin number, its reported value and
    the date and time when the change occurred

    :param data: [pin, current reported value, pin_mode, timestamp]
    """
    date = time.strftime('%Y-%m-%d %H:%M:%S', time.localtime(data[CB_TIME]))
    print(f'Pin Mode: {data[CB_PIN_MODE]} Pin: {data[CB_PIN]} Value: {data[CB_VALUE]} Time Stamp: {date}')


async def touch_input(my_board, pin):
    """
     This function establishes the pin as an
     analog input. Any changes on this pin will
     be reported through the call back function.

     :param my_board: a telemetrix instance
     :param pin: GPIO pin number
     """

    # set the pin mode
    await my_board.set_pin_mode_touch(pin, differential=2, callback=the_callback)

    print('Enter Control-C to quit.')
    try:
        while True:
            await asyncio.sleep(1)
    except KeyboardInterrupt:
        await board.shutdown()
        sys.exit(0)


# get the event loop
loop = asyncio.new_event_loop()
asyncio.set_event_loop(loop)

# instantiate telemetrix
board = telemetrix_aio_esp32.TelemetrixAioEsp32(transport_address=IP_ADDRESS)

try:
    # start the main function
    loop.run_until_complete(touch_input(board, TOUCH_PIN))
    loop.run_until_complete(board.shutdown())

except KeyboardInterrupt:
    loop.run_until_complete(board.shutdown())
    sys.exit(0)