树莓派pico官方网站_树莓派pico参数

from machine import Pin

if __name__ == '__main__':
    # 构建led对象
    # 板载LED灯连接与引脚25相连
    # LED = Pin(id, mode, pull)
    # id:PICO引脚编号
    # mode:输入输出方式，有Pin.IN(输入)和Pin.OUT(输出)两种
    # pull:上下拉电阻配置，有None(无上下拉电阻)、Pin.PULL_UP(上拉电阻)和Pin.PULL_DOWN(下拉电阻)三种
    LED = Pin(25, Pin.OUT)
    # 高电平点亮
    LED.value(1)

from machine import Pin
from utime import sleep
import utime

led = Pin(25, Pin.OUT)

if __name__ == '__main__':
    while True:
        # led点亮
        led.value(1)
        utime.sleep_ms(1000)
        # led熄灭
        led.value(0)
        utime.sleep_ms(1000)

from machine import Pin
import utime
# 定义LED引脚数组
leds = [Pin(i,Pin.OUT) for i in range(0,5)]
if __name__ == '__main__':
while True:
# 依次点亮
for n in range(0,5):
leds[n].value(1)
utime.sleep_ms(200)
# 依次熄灭
for n in range(0,5):
leds[n].value(0)
utime.sleep_ms(100)

from machine import Pin
import utime
# 配置按键
# key = machine.Pin(id, mode, pull)
# id:树莓派Pico引脚编号
# mode:输入输出方式，有Pin.IN(输入)和Pin.OUT(输出)两种
# pull:上下拉电阻配置，有None(无上下拉电阻)、Pin.PULL_UP(上拉电阻)和Pin.PULL_DOWN(下拉电阻)三种
key = Pin(0, Pin.IN, Pin.PULL_UP)
if __name__ == '__main__':
while True:
# print(key.value())
if key.value() == 0:
# 等待一段时间，防止抖动
utime.sleep_ms(100)
if key.value() == 0:
print('The button is pressed')

from machine import Pin
import utime
#配置按键
key = Pin(0, Pin.IN, Pin.PULL_UP)
def external_interrupt(key):
# 消除抖动
utime.sleep_ms(100)
# 再次判断按键是否被按下
if key.value() == 0:
print('The button is pressed')
if __name__ == '__main__':
# KEY.irq(handler,trigger)
# handler:中断执行的回调函数
# trigger:触发中断的方式，分别为Pin.IRQ_FALLING(下降沿触发)、
# Pin.IRQ_RISING(上升沿触发)、Pin.IRQ_LOW_LEVEL(低电平触发)和
# Pin.IRQ_HIGH_LEVEL(高电平触发)四种
# 定义中断，下降沿触发
key.irq(external_interrupt, Pin.IRQ_FALLING)

from machine import Pin, Timer
# 创建LED对象
led=Pin(25, Pin.OUT)
# 闪烁回调函数
def twinkle(tim):
# toggle方法:LED状态翻转
led.toggle()
if __name__ == '__main__':
# 构建定时器
tim = Timer()
# tim.init(period, mode, callback)
# period:周期时间(单位为ms)
# mode:工作模式，有Timer.ONE_SHOT(执行一次)和Timer.PERIODIC(周期性执行)两种
# callback:定时器中断的回调函数
tim.init(period=2000, mode=Timer.PERIODIC, callback=twinkle)

from machine import Pin, Timer, PWM
import utime
led = PWM(Pin(25))
# 设置频率值
led.freq(1000)
led_value = 0
# led以5%增长/减少的速度变化亮度
led_space = 5
if __name__ == '__main__':
while True:
led_value += led_space
if led_value >= 100:
led_value = 100
led_space = -5
elif led_value <= 0:
led_value = 0
led_space = 5
# 设置占空比，需在0-65535之间
led.duty_u16(int(led_value * 500))
utime.sleep_ms(100)

from machine import SoftI2C, Pin
# 导入SSD1306驱动模块
from ssd1306 import SSD1306_I2C
if __name__ == '__main__':
# 初始化SoftI2C
# OLED屏幕的scl连接到树莓派PICO的GPIO0, sda连接到GPIO1
i2c = SoftI2C(scl=Pin(0), sda=Pin(1))
# oled = SSD1306_I2C(width, height, i2c, addr)
# width:屏幕宽
# height: 屏幕高
# i2c:已定义的I2C对象
oled = SSD1306_I2C(128, 64, i2c) #OLED显示屏初始化：128*64分辨率,OLED的I2C地址是0x3c
# OLED显示的字符串，横坐标和纵坐标
oled.text("Hello World!", 0, 0)
# OLED显示
oled.show()

import machine, onewire, ds18x20, time, utime
# 使用GPIO0口传输数据
# 将DS18B20的VCC端连接到树莓派PICO的3V3(OUT)端
# 将DS18B20的数据端连接到树莓派PICO的GPIO0口
# 将DS18B20的GND端连接到树莓派PICO的GND端
pin = machine.Pin(0)
sensor = ds18x20.DS18X20(onewire.OneWire(pin))
# 扫描是否存在DS18B20设备
roms = sensor.scan()
print('Found a ds18x20 device')
# 获取温度数据
def detect_tem():
while True:
sensor.convert_temp()
for rom in roms:
# 打印出温度值
# 第一个打印出来的数值可能不太准确，从第二条数据开始才会显示出正常数据
print("{:.3f}".format(sensor.read_temp(rom)))  
utime.sleep_ms(2000)
# 程序入口
if __name__ == '__main__':
detect_tem()

from machine import Pin
from DHT22 import DHT22
import utime
pin = Pin(0,Pin.IN,Pin.PULL_UP)
# 创建dht11对象
# 将DHT11的VCC端连接到树莓派PICO的3V3(OUT)端
# 将DHT11的数据端连接到树莓派PICO的GPIO0口
# 将DHT11的GND端连接到树莓派PICO的GND端
dht_sensor=DHT22(pin, dht11=True)
# 循环函数
def detection():
while True:
T, H = dht_sensor.read()
if T is None:
print("sensor error")
else:
print("{}'C {}%".format(T, H))
utime.sleep_ms(2000)
# 程序入口
if __name__ == '__main__':    
detection()

from machine import Pin
from DHT22 import DHT22
import utime
pin = Pin(0,Pin.IN,Pin.PULL_UP)
# 创建dht11对象
# 将DHT11的VCC端连接到树莓派PICO的3V3(OUT)端
# 将DHT11的数据端连接到树莓派PICO的GPIO0口
# 将DHT11的GND端连接到树莓派PICO的GND端
dht_sensor=DHT22(pin, dht11=False)
# 循环函数
def detection():
while True:
T, H = dht_sensor.read()
if T is None:
print("sensor error")
else:
print("{:.2f}'C {:.2f}%".format(T, H))
utime.sleep_ms(2000)
# 程序入口
if __name__ == '__main__':    
detection()