8000 Added blynktimer example · dfromeror/lib-python@96b7dad · GitHub
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amorozenko
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Added blynktimer example
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‎README.md

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@@ -159,6 +159,7 @@ Examples can be found **[here][blynk-py-examples]** Check them all to get famili
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- [05_set_property_notify.py](https://github.com/blynkkk/lib-python/blob/master/examples/05_set_property_notify.py): How to change some of widget UI properties like colors, labels, etc
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- [06_terminal_widget.py](https://github.com/blynkkk/lib-python/blob/master/examples/06_terminal_widget.py): Communication between hardware and app through Terminal widget)
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- [07_tweet_and_logging.py](https://github.com/blynkkk/lib-python/blob/master/examples/07_tweet_and_logging.py): How to post to Twitter and log events from your hardware
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- [08_blynk_timer.py](https://github.com/blynkkk/lib-python/blob/master/examples/08_blynk_timer.py): How send data periodically from hardware by using **[Blynk Timer][blynktimer-doc]**
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##### Raspberry Pi (any):
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Read [Raspberry Pi guide](https://github.com/blynkkk/lib-python/tree/master/examples/raspberry) first.
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[micropython-pkg]: https://github.com/micropython/micropython/wiki/Getting-Started
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[virtual-env]: https://virtualenv.pypa.io/en/latest/installation/
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[esp8266-readme]: https://github.com/blynkkk/lib-python/blob/master/examples/esp8266/README.md
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[blynktimer-doc]: https://github.com/blynkkk/lib-python/blob/master/blynktimer.py
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[blynktimer-doc]: https://github.com/blynkkk/lib-python/blob/master/TIMERS.md

‎examples/08_blynk_timer.py

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"""
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[BLYNK TIMER EXAMPLE] ============================================================================================
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Environment prepare:
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In your Blynk App project:
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- add "SuperChart" widget
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- add two data streams for it ( stream #1 - Virtual Pin 8, stream #2 - Virtual Pin 9)
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- set different colors for data stream (ex. red and orange)
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- Run the App (green triangle in the upper right corner).
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- define your auth token for current example and run it
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This started program will register two timers that will update Virtual Pins data after defined intervals.
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In app you can see on graph both pins data change. Additionally timers will print new pin values info to stdout.
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Schema:
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=================================================================================================================
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+-----------+ +--------------+ +--------------+
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| | | | | |
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| blynk lib | | blynk server | | blynk app |
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| | | virtual pin | | |
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| | | | | |
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+-----+-----+ +------+-------+ +-------+------+
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| | |
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| | |
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| | |
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| | |
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+------------+ | |
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| +---------+ | |
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| | | update virtual pin 8 value | |
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| | | | notify app about vpin 8 update |
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| +-------->------------------------------------->+ |
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| | +----------------------------------->+
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+----------->------------------------------------->+ |
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| +----------------------------------->+
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| update virtual pin 9 value | |
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| | notify app about vpin 9 update |
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| | |
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| | |
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| | |
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+ + +
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================================================================================================================
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Additional blynk info you can find by examining such resources:
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Downloads, docs, tutorials: https://blynk.io
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Sketch generator: http://examples.blynk.cc
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Blynk community: http://community.blynk.cc
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Social networks: http://www.fb.com/blynkapp
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http://twitter.com/blynk_app
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====================================================================================================
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"""
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import blynklib
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import blynktimer
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import random
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BLYNK_AUTH = 'YourAuthToken'
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blynk = blynklib.Blynk(BLYNK_AUTH)
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timer = blynktimer.Timer()
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WRITE_EVENT_PRINT_MSG = "[WRITE_VIRTUAL_WRITE] Pin: V{} Value: '{}'"
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# register two timers for different pins with different intervals
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# first num is delay interval in seconds
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# second num is function argument
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# run_once flag that allows run timers once or periodically
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@timer.register(4, 8, run_once=False)
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@timer.register(10, 9, run_once=False)
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def write_to_virtual_pin(pin_num):
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value = random.randint(0, 20)
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print(WRITE_EVENT_PRINT_MSG.format(pin_num, value))
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blynk.virtual_write(pin_num, value)
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while True:
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blynk.run()
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timer.run()

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