【RPi PICO】Programmable IO例子

dcexpert

【RPi PICO】Programmable IO例子 [复制链接]

 

这是官方文档带有的一个例子，

 

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)

 

dcexpert

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/

fxyc87

rp2-pico/的micropython固件更新的好快，最近2天一更新，

dcexpert

fxyc87 发表于 2021-2-7 16:48 rp2-pico/的micropython固件更新的好快，最近2天一更新，

最近固件bug比较多，所以更新也快。

tagetage

Programmable IO有什么特点呢，楼主。