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Sources for the PIO Blog-Post

master 1.0
Olli Graf 2 months ago
commit
15b89e2431
  1. 29
      blink-led-pio.py
  2. 20
      blink-led.py

29
blink-led-pio.py

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from machine import Pin
import rp2
from time import sleep
@rp2.asm_pio(set_init=rp2.PIO.OUT_LOW)
def blink():
wrap_target()
set(pins, 1) [31]
nop() [31]
nop() [31]
nop() [31]
set(pins, 0) [31]
nop() [31]
nop() [31]
nop() [31]
wrap()
led = machine.Pin(25, machine.Pin.OUT)
sm = rp2.StateMachine(0, blink, freq=2000, set_base=led)
# StateMachine aktivieren
sm.active(1)
# Für 3 Sekunden laufen lassen.
sleep(3)
# deaktivieren
sm.active(0)

20
blink-led.py

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from machine import Pin
from utime import sleep
led = machine.Pin(25, machine.Pin.OUT)
state = False
running = True
#Endlosschleife
led.off()
while True:
state = not state # state hin- und herschalten
sleep(1.0)
if state:
print('LED on')
led.on()
# running = False
else:
print('LED off')
led.off()
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