【RPi PICO】Programmable IO例子

[shaoziyang]

Code: Select all

from rp2 import PIO, StateMachine, asm_pio
from machine import Pin
import time
 
@asm_pio(set_init=PIO.OUT_LOW)
def led_quarter_brightness():
set(pins, 0) [2]
set(pins, 1)
 
@asm_pio(set_init=PIO.OUT_LOW)
def led_half_brightness():
set(pins, 0)
set(pins, 1)
 
@asm_pio(set_init=PIO.OUT_HIGH)
def led_full_brightness():
set(pins, 1)
 
sm1 = StateMachine(1, led_quarter_brightness, freq=10000, set_base=Pin(25))
sm2 = StateMachine(2, led_half_brightness, freq=10000, set_base=Pin(25))
sm3 = StateMachine(3, led_full_brightness, freq=10000, set_base=Pin(25))
 
while(True):
sm1.active(1)
time.sleep(1)
sm1.active(0)
 
sm2.active(1)
time.sleep(1)
sm2.active(0)
 
sm3.active(1)
time.sleep(1)
sm3.active(0)


 
 

[shaoziyang]

如果运行时提示错误，找不到array模块，请升级micropython固件。

https://micropython.org/download/rp2-pico/