Uploaded main projects

pi4/main.py

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+from http import server
+import RPi.GPIO as GPIO
+import subprocess, os, time
+
+# GPIO setup
+GPIO.setmode(GPIO.BCM)
+GPIO.setwarnings(False)
+
+# Powering Status Pin to indicate that control program is up
+GPIO.setup(4, GPIO.OUT)
+GPIO.output(4, True)
+
+# setting up communication pins for binary fanmode transmission
+GPIO.setup(17, GPIO.IN)
+GPIO.setup(18, GPIO.IN)
+
+# setting up control pin for fancontrol
+GPIO.setuo(4, GPIO.OUT)
+
+# define default variables -> fan speed will be at max. if someting goes wrong with getting cpu temps
+thermal = -99
+fanmode = 100
+i = 0
+
+file = open("output.txt", 'r+')
+
+cpu_usage = "--"
+total_ram = "--.--"
+ram_usage = "--.--"
+ram_free = "--.--"
+
+# check mc server status too. Set to False to disable Minecraft server module
+check_mcserver = True
+mc_ip = "127.0.0.1"
+mc_port = "25565"
+
+mc_motd = "-"
+mc_version = 0
+mc_players_max = 0
+mc_players_on = 0
+mc_version_brand = "-"
+mc_plugins = []
+mc_player_list = []
+
+# function to get cpu temperature on linux and macOS and decide on fan speed.
+def temp(thermal, fanmode):
+    thermal = str(round(float(subprocess.check_output("cat /sys/class/thermal/thermal_zone0/temp", shell=True).rstrip())/1000,2))
+    if thermal <= 20:
+        fanmode = 0
+    elif 20 < thermal <= 40:
+        fanmode = 25
+    elif 40 < thermal <= 60:
+        fanmode = 50
+    elif 60 < fanmode <= 70:
+        fanmode = 75
+    elif 70 < fanmode:
+        fanmode = 100
+    return thermal, fanmode
+
+# function to round values
+def display(val):
+  return round(float(val),2)
+
+# function to get system informations
+def sys_monitor(cpu_usage, total_ram, ram_usage, ram_free):
+    cpu_usage = str(round(float(os.popen('''grep 'cpu ' /proc/stat | awk '{usage=($2+$4)*100/($2+$4+$5)} END {print usage }' ''').readline()),2))
+    total_ram = str(round(display(subprocess.check_output("free | awk 'FNR == 2 {print $2/1000000}'", shell=True))))
+    ram_usage = str(subprocess.check_output("free | awk 'FNR == 2 {print $3/($3+$4)*100}'", shell=True))
+    ram_free = str(100 - display(ram_usage))
+    return cpu_usage, total_ram, ram_usage, ram_free
+
+# function to get server status if enabled
+def mcserver(mc_motd, mc_version, mc_players_max, mc_players_on, mc_version_brand, mc_plugins, mc_player_list):
+    if check_mcserver:
+        # importing module mcstatus --> must be installed for this in order to work
+        from mcstatus import MinecraftServer
+        mcserver = MinecraftServer.lookup(mc_ip + ":" + mc_port)
+        status = mcserver.status()
+        mc_motd = status.description
+        mc_version = status.version.name
+        mc_players_max = status.players.max
+        mc_players_on = status.players.online
+
+        # IMPORTANT!
+        # for the following code to work, the query must be enabled in the server config file ('server.properties' --> 'enable-query=True'). 
+        # If you don't have access to that file but still want your server status, you can delete the following lines that contain the 'query' argument. 
+        # This will provide you with a more limited status: 
+        #   the version brand (vanilla, fabric modded, bukkit, etc.), the plugin list (if any) and the list if players won't be visible in that case
+        query = mcserver.query()
+        mc_version = query.software.version
+        mc_version_brand = query.software.brand
+        mc_plugins = query.software.plugins
+        mc_player_list = query.players.names
+
+        # if no query --> delete 'mc_version_brand', 'mc_plugins' and 'mc_player_list' from the return argument
+        # the line below should then look like THIS: return mc_motd, mc_version, mc_players_max, mc_players_on
+        return mc_motd, mc_version, mc_players_max, mc_players_on, mc_version_brand, mc_plugins, mc_player_list
+
+
+while True:
+    # eecute temperature function
+
+    temp(thermal, fanmode)
+    # determine fanmode of 2nd raspberry PI and guess CPU temps
+    if GPIO.input(17) and GPIO.input(18):
+        slave_fanmode = 75
+        slave_thermal = "60 - 70"
+    elif GPIO.input(17) and not GPIO.input(18):
+        slave_fanmode = 50
+        slave_thermal = "40 - 60"
+    elif not GPIO.input(17) and GPIO.input(18):
+        slave_fanmode = 25
+        slave_thermal = "0 - 40"
+    elif not GPIO.input(17) and not GPIO.input(18):
+        slave_fanmode = 100
+        slave_thermal = "70 - 100"
+    else:
+        slave_fanmode = 100
+        slave_thermal = "-"
+    
+    # get other system infos and Minecraft Server stats
+    sys_monitor(cpu_usage, total_ram, ram_usage, ram_free)
+    mcserver(mc_motd, mc_version, mc_players_max, mc_players_on, mc_version_brand, mc_plugins, mc_player_list)
+
+    # write all data to list
+    system_infos = [fanmode, slave_fanmode, thermal, slave_thermal, cpu_usage, total_ram, ram_usage, ram_free, mc_motd, mc_version, mc_players_max, mc_players_on, mc_version_brand, mc_plugins, mc_player_list]
+
+    # delete all text in file and write list to file
+    file.truncate(0)
+    for e in system_infos:
+        file.write(e)
+        file.write(";")
+    
+    # determine the PI with higher CPU temperature
+    if slave_fanmode > fanmode:
+        fanspeed = slave_fanmode
+    else:
+        fanspeed = fanmode
+    if fanmode == 100:
+        GPIO.output(4, True)
+        time.sleep(5)
+    elif fanmode == 75:
+        while i < 12:
+            GPIO.output(4, True)
+            time.sleep(0.3)
+            GPIO.outut(4, False)
+            time.sleep(0.1)
+            i += 1
+    elif fanmode == 50:
+        while i < 25:
+            GPIO.output(4, True)
+            time.sleep(0.1)
+            GPIO.output(4, False)
+            time.sleep(0.1)
+            i += 1
+    elif fanmode == 25:
+        while i < 12:
+            GPIO.output(4, True)
+            time.sleep(0.1)
+            GPIO.outut(4, False)
+            time.sleep(0.3)
+            i += 1
+    else:
+        GPIO.output(4, True)
+        time.sleep(5)