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#!/usr/bin/python3
# -*- coding: utf-8 -*-
import lgpio, re, os, subprocess, logging
from time import sleep
def check_CPU_temp():
t = 0
err, msg = subprocess.getstatusoutput(
"/usr/bin/zsh -c 'LD_LIBRARY_PATH=/opt/vc/lib /opt/vc/bin/vcgencmd measure_temp'"
)
if not err:
m = re.search(r"-?\d\.?\d*", msg) # a solution with a regex
try:
t = int(m.group())
except ValueError: # catch only error needed
pass
return t, msg
h = lgpio.gpiochip_open(0)
channel = 14
start_temp = 50
end_temp = 43
show_info = True
is_high = False
# Logger setup
logger = logging.getLogger()
logger.setLevel(level=logging.INFO)
formatter = logging.Formatter("%(asctime)s %(levelname)s %(message)s")
streamHandler = logging.StreamHandler()
streamHandler.setLevel(logging.INFO)
streamHandler.setFormatter(formatter)
fileHandler = logging.FileHandler("/var/log/autofan.log", mode="w")
fileHandler.setLevel(logging.INFO)
fileHandler.setFormatter(formatter)
logger.addHandler(streamHandler)
logger.addHandler(fileHandler)
if os.path.exists("/usr/local/IS_HIGH_FLAG"):
lgpio.gpio_write(h, channel, 0)
logger.info("Fan started.")
os.remove("/usr/local/IS_HIGH_FLAG")
try:
while True:
temp = open('/sys/class/thermal/thermal_zone0/temp')
temp = int(temp.read()) / 1000
msg = "%.1f ℃" % temp
#temp, msg = check_CPU_temp()
if temp > start_temp and not is_high: # 当SoC温度超过启动阈值且风扇处于关闭状态
lgpio.gpio_write(h, channel, 1)
logger.info("Fan started.")
logger.info(("Current %s") % msg)
show_info = True
is_high = True
elif temp < end_temp and is_high: # 当SoC温度低于关闭阈值且风扇处于打开状态
lgpio.gpio_write(h, channel, 0)
logger.info("Fan stopped.")
logger.info(("Current %s") % msg)
is_high = False
show_info = True
elif show_info:
logger.info("Nothing to do, Skipping now...")
logger.info(("Current %s") % msg)
show_info = False
sleep(10) # 每隔10秒监控一次
except:
lgpio.gpio_write(h, channel, 0)
logger.info("Fan stopped.")
lgpio.gpiochip_close(h)
logger.info("Controller Closed.")
lgpio.gpiochip_close(h)
logger.info("Controller Closed.")
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