Created
December 7, 2017 15:25
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intervalometer ESP32 using picoweb
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| # Dependencies | |
| import upip | |
| upip.install('picoweb') | |
| # Save web.py on device | |
| # Run | |
| import web | |
| webstart(host="0.0.0.0", port=80, debug=True) |
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| import picoweb | |
| import gc | |
| import uasyncio as asyncio | |
| import utime as time | |
| state = { | |
| "interval": 30, | |
| "running": False, | |
| "start": 1, | |
| "last_shoot": 1 | |
| } | |
| app = picoweb.WebApp(__name__) | |
| @app.route("/") | |
| def index(req, resp): | |
| yield from picoweb.start_response(resp) | |
| yield from resp.awrite(''' | |
| {text}, {interval} <br /> | |
| <form action="/action" method=POST> | |
| <input type="text" name="interval" value="{interval}"><br> | |
| <input type="submit" method="post" value="{button_text}"> | |
| </form>'''.format( | |
| text="RUNNING" if state['running'] else "STOPPED", | |
| interval=str(state['interval']), | |
| button_text="START/STOP" | |
| )) | |
| @app.route("/action") | |
| def index(req, resp): | |
| yield from picoweb.start_response(resp) | |
| yield from req.read_form_data() | |
| state['interval'] = int(req.form['interval'][0]) | |
| state['running'] = not state['running'] | |
| state['start'] = int(time.time()) | |
| yield from resp.awrite(''' | |
| <head> | |
| <meta http-equiv="refresh" content="0; url=/" /> | |
| </head> | |
| <body> | |
| {text}, {interval} <br /> | |
| <a href="/">Go back<a> | |
| </body> | |
| '''. format( | |
| text="RUNNING" if state['running'] else "NOT/RUNNING", | |
| interval=str(state['interval']), | |
| )) | |
| #import logging | |
| #logging.basicConfig(level=logging.INFO) | |
| #app.run(debug=True) | |
| def on_machine(): | |
| try: | |
| import machine | |
| return True | |
| except ImportError: | |
| return False | |
| if on_machine(): | |
| from machine import Pin | |
| pin4 = Pin(4, Pin.OUT) | |
| else: | |
| pin4 = None | |
| def pin(value): | |
| global pin4 | |
| if on_machine(): | |
| pin4.value(value) | |
| def simple_loop(): | |
| while True: | |
| now = int(time.time()) | |
| pin(0) | |
| if state['running']: | |
| if state['interval'] == 0: | |
| pin(1) | |
| elif now % state['interval'] == 0 and state['last_shoot'] != now: | |
| state['last_shoot'] = now | |
| pin(1) | |
| else: | |
| pin(0) | |
| yield from asyncio.sleep(0.1) | |
| def start(**kwargs): | |
| loop = asyncio.get_event_loop() | |
| loop.create_task(simple_loop()) | |
| app.run(**kwargs) | |
| if __name__ == "__main__": | |
| start(host="0.0.0.0", port=80, debug=True) | |
| #start(debug=True)web.start(host="0.0.0.0", port=80, debug=True) |
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