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gpio_inputs_-_button_led_control_using_an_interrupt

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gpio_inputs_-_button_led_control_using_an_interrupt [2016/08/09 23:00] – walkeradmingpio_inputs_-_button_led_control_using_an_interrupt [2016/08/09 23:04] – walkeradmin
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-blah blah+The previous example of using a button to light an LED, everything worked fine, but our processor was at 100%, this needs fixing, so in this example instead of constantly polling and setting GPIO pins, we are using a interrupt where by we do nothing until a button is actually pressed.
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 +Create a new file in the normal way ( you can download the python file {{ :led-button-i.zip |here}} to save time)
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     #import modules     #import modules
-    import RPi.GPIO as GPIO    # This imports the GPIO libarary that allows the use of the GPIO pins, +    import RPi.GPIO as GPIO    # This imports the GPIO library that allows the use of the GPIO pins, 
-    import time                # This imports the time libarary (for delays among other things)+    import time                # This imports the time library (for delays among other things)
                                # These libraries are built in to Raspbian.                                # These libraries are built in to Raspbian.