maix dock＋18B20 长时间工作后就一直读4096
本帖最后由 DFBJMRK9gEd 于 2021-4-11 16:50 编辑问题：工作半小时内没有问题，时间超出半小时后读值就卡在4095.73....了 就很迷惑...
from fpioa_manager import *
from modules import onewire
from board import board_info
import time
fm.register(14, fm.fpioa.GPIOHS2, force=True)
ds18b20=onewire(fm.fpioa.GPIOHS2)
def get_temp():
ds18b20.reset()
ds18b20.writebyte(0xcc)
ds18b20.writebyte(0x44)
ds18b20.reset()
ds18b20.writebyte(0xcc)
ds18b20.writebyte(0xbe)
tplsb=ds18b20.readbyte()
tpmsb=ds18b20.readbyte()
s_tem = tpmsb<<8;
s_tem = s_tem | tplsb;
if( s_tem < 0 ):
f_tem = (~s_tem+1) * 0.0625;
else:
f_tem = (s_tem * 0.0625);
return f_tem
while(True):
print(get_temp())
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