需求背景：使用继电器控制两个USB风扇给笔记本电脑散热，但每次都需要手动开启十分繁琐，故希望依赖监控程序监控GPU温度，到达指定温度后，自动开始风扇，主动散热；
ATOM Socket Kit (HLW8023) - CN
https://docs.m5stack.com/zh_CN/atom/atom_socket_cn
1、首先第一：
这东西是通过type-c链接电脑的
出场默认，这个模块被设置在转发计量器数据的模式
所以你一接上COM5口，就一堆堆的数据就出来了
还会显示Not Connected，其实这不是COM口没连接的提示，这个提示弄得我也懵逼的不行，后来才想通了，它的计量器在里面不断转发计量器的数据，那玩意会让你的串口窗口被填满。
所以我无奈了，只好，先拿过来Erase掉原来的出场程序
接下来把Burn写入最新的固件
OK，这才算初始化了，否则真闹心
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2、初始程序还原：
选择Aotm Lite，BASE一定要选对
这样就能看到一堆的构建块
最后在我的这个业务场景下，其实我只需要
on/off就行了
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3、实现控制：
点击左边的软件，增加MQTT
https://uiflow-micropython.readthedocs.io/en/latest/software/umqtt.default.html
文档
改成1883
- 1883 : MQTT, unencrypted, unauthenticated
OK
setup改造成这样
核心是需要加入这个，clean session
LOOP里面加入这个：
最后就是监听程序：
就是收到on，你就on，收到off，你就off
就这么简单。。。
硬件的程序部分就结束了其实
5、写入程序：
要先手动删除main.py
然后就可以send file了
运行没有问题了，接下来就是服务器的python程序这边了
附上硬件的python程序，算是监听端吧
import os, sys, io
import M5
from M5 import *
from umqtt import *
from hardware import *
from base import ATOMSocketBase
mqtt_client = None
atomsocket = None
rgb = None
onoff = None
def mqtt_lemon_switch_event(data):
global mqtt_client, atomsocket, rgb, onoff
onoff = (str(((data[1]).decode()))).strip()
print(onoff)
if onoff == 'on':
atomsocket.set_relay(True)
if onoff == 'off':
atomsocket.set_relay(False)
def setup():
global mqtt_client, atomsocket, rgb, onoff
M5.begin()
mqtt_client = MQTTClient('M5_switcher', 'test.mosquitto.org', port=1883, user='', password='', keepalive=0)
mqtt_client.connect(clean_session=True)
mqtt_client.subscribe('lemon_switch', mqtt_lemon_switch_event, qos=0)
rgb = RGB()
atomsocket = ATOMSocketBase(1, port=(22, 33), relay=23)
atomsocket.set_relay(False)
onoff = ''
rgb.set_brightness(10)
rgb.fill_color(0xff0000)
print('hello M5')
def loop():
global mqtt_client, atomsocket, rgb, onoff
M5.update()
if BtnA.wasClicked():
if onoff == True:
rgb.set_brightness(10)
rgb.fill_color(0xff0000)
atomsocket.set_relay(False)
onoff = False
else:
rgb.set_brightness(10)
rgb.fill_color(0x33ccff)
atomsocket.set_relay(True)
onoff = True
mqtt_client.wait_msg()
if __name__ == '__main__':
try:
setup()
while True:
loop()
except (Exception, KeyboardInterrupt) as e:
try:
from utility import print_error_msg
print_error_msg(e)
except ImportError:
print("please update to latest firmware")
# main.py
然后是呼叫端的程序：
import pynvml
import time
import paho.mqtt.client as mqtt
# MQTT 相关设置
broker = "test.mosquitto.org"
port = 1883
topic = "lemon_switch"
client = mqtt.Client(mqtt.CallbackAPIVersion.VERSION2)
def get_nvidia_temperature():
pynvml.nvmlInit()
handle = pynvml.nvmlDeviceGetHandleByIndex(0) # 假设获取第一个显卡
above_50_count = 0
below_50_count = 0
while True:
temperature = pynvml.nvmlDeviceGetTemperature(handle, pynvml.NVML_TEMPERATURE_GPU)
if temperature > 50:
above_50_count += 1
if above_50_count >= 3:
client.connect(broker, port)
client.publish(topic, "on")
above_50_count = 0
print(f"大于50度，启动风扇")
elif temperature <= 50:
below_50_count += 1
if below_50_count >= 3:
client.connect(broker, port)
client.publish(topic, "off")
below_50_count = 0
print(f"小于等于50度，关闭风扇")
print(f"当前 NVIDIA 显卡温度: {temperature} 度")
time.sleep(3)
try:
get_nvidia_temperature()
except KeyboardInterrupt:
pynvml.nvmlShutdown()
client.disconnect()
#别挂xxx的情况下：
# pip install pynvml
# pip install paho-mqtt
8、程序的两项优化：
8.1 pc端：
import pynvml
import time
import paho.mqtt.client as mqtt
# MQTT 相关设置
broker = "192.168.50.232"
port = 1883
topic = "lemon_switch"
client = mqtt.Client(mqtt.CallbackAPIVersion.VERSION2)
def get_nvidia_temperature():
pynvml.nvmlInit()
handle = pynvml.nvmlDeviceGetHandleByIndex(0) # 假设获取第一个显卡
above_50_count = 0
below_50_count = 0
while True:
temperature = pynvml.nvmlDeviceGetTemperature(handle, pynvml.NVML_TEMPERATURE_GPU)
if temperature > 50:
above_50_count += 1
below_50_count = 0 # 重置低于或等于 50 度的次数
if above_50_count >= 10:
client.connect(broker, port)
client.publish(topic, "on")
above_50_count = 0
print(f"大于50度，启动风扇")
elif temperature <= 50:
below_50_count += 1
above_50_count = 0 # 重置高于 50 度的次数
if below_50_count >= 10:
client.connect(broker, port)
client.publish(topic, "off")
below_50_count = 0
print(f"小于等于50度，关闭风扇")
print(f"当前 NVIDIA 显卡温度: {temperature} 度")
time.sleep(3)
try:
get_nvidia_temperature()
except KeyboardInterrupt:
pynvml.nvmlShutdown()
client.disconnect()
#别挂xxx的情况下：
# pip install pynvml
# pip install paho-mqtt
加入了重置计数器的逻辑，让这个过程是连续累计十次，才会去开关风扇
等于是30秒内超过温控的阈值才会启动这个过程mqtt_client = MQTTClient('M5_switcher', '192.168.50.232', port=1883, user='', password='', keepalive=65535)其二是M5那边改成了65535
18天左右，才会断开链接啥的
还需要再优化，比如凌晨4点左右给M5做一个强制的重启，这种单片机真的是不用吝啬重启这种操作