Sources for the PIO Blog-Post
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29
blink-led-pio.py
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29
blink-led-pio.py
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from machine import Pin
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import rp2
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from time import sleep
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@rp2.asm_pio(set_init=rp2.PIO.OUT_LOW)
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def blink():
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wrap_target()
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set(pins, 1) [31]
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nop() [31]
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nop() [31]
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nop() [31]
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set(pins, 0) [31]
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nop() [31]
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nop() [31]
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nop() [31]
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wrap()
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led = machine.Pin(25, machine.Pin.OUT)
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sm = rp2.StateMachine(0, blink, freq=2000, set_base=led)
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# StateMachine aktivieren
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sm.active(1)
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# Für 3 Sekunden laufen lassen.
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sleep(3)
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# deaktivieren
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sm.active(0)
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20
blink-led.py
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20
blink-led.py
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from machine import Pin
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from utime import sleep
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led = machine.Pin(25, machine.Pin.OUT)
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state = False
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running = True
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#Endlosschleife
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led.off()
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while True:
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state = not state # state hin- und herschalten
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sleep(1.0)
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if state:
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print('LED on')
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led.on()
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# running = False
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else:
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print('LED off')
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led.off()
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