ds18b20温度传感器quecpython的代码

下面是使用QuecPython编写的ds18b20温度传感器的代码：

from machine import Pin
import time

pin = Pin(Pin.GPIO3, Pin.OUT)

def delay_us(us):
    time.sleep_us(us)

def write_bit(bit):
    pin.value(0)
    delay_us(2)
    if bit:
        pin.value(1)
    delay_us(60)
    pin.value(1)

def read_bit():
    pin.value(0)
    delay_us(2)
    pin.value(1)
    delay_us(14)
    bit = pin.value()
    delay_us(45)
    return bit

def write_byte(byte):
    for i in range(8):
        write_bit(byte & 0x01)
        byte >>= 1

def read_byte():
    byte = 0
    for i in range(8):
        byte |= (read_bit() << i)
    return byte

def read_temperature():
    t_low, t_high = 0, 0
    temperature = 0

    pin.value(1)
    time.sleep_us(500)

    pin.value(0)
    time.sleep_us(500)

    pin.value(1)
    time.sleep_us(80)
    write_byte(0xcc)   # skip ROM
    write_byte(0x44)   # convert T

    time.sleep_ms(750)
    pin.value(0)
    time.sleep_us(2)
    pin.value(1)
    time.sleep_us(10)
    write_byte(0xcc)   # skip ROM
    write_byte(0xbe)   # read scratchpad
    t_low = read_byte()
    t_high = read_byte()
    temperature = ((t_high << 8) | t_low) * 0.0625

    return temperature

while True:
    temperature = read_temperature()
    print("Temperature:", temperature)
    time.sleep_ms(1000)

这个程序使用了QuecPython的GPIO库来控制GPIO口，读取ds18b20的温度值。程序的主函数里无限循环地读取温度并输出。你可以根据需要修改程序。