start of v0.2

pi-slave/main.py

@@ -1,57 +1,29 @@
-import RPi.GPIO as GPIO
-import subprocess
-import time
+# Purpose
+# - transmit the following to RPI4 using binary:
+#   - CPU temps (low <30°; medium 30°<x<45°; high 45°<x<60°; panic >60°)
 
-# GPIO setup
-GPIO.setmode(GPIO.BCM)
-GPIO.setwarnings(False)
+# - receive the following from Arduino using binary:
+#   - used current of RPI 4
+#   - used current of RPI 1.2
+#   - uptime
+#   - cpu usage (core #0 - #3)
+#   - cpu frequency
+#   - cpu temps (RPI 4)
+#   - ram usage
+#   - am capacity
+#   - swap usuage
+#   - disk usage
+#   - disk capacity
+#   - disk used
+#   - mc server motd
+#   - mc sever version
+#   - mc server version brand
+#   - mc server players max
+#   - mc server players online
+#   - mc server plugins
+#   - mc server player_list
+#   - amount of connected devices
+#   - fan speed 180mm fan
+#   - fan speed 40mm fan
 
-# 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.OUT)
-GPIO.setup(18, 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
-
-# function to get cpu temperature on linux and macOS and decide on fan speed.
-def temp(thermal, fanmode):
-    thermal = int(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
-
-# main loop
-while True:
-    # get cpu temp
-    thermal, fanmode = temp(thermal, fanmode)
-    if fanmode == 0 or fanmode == 25:
-        GPIO.output(17, False)
-        GPIO.output(18, True)
-    elif fanmode == 50:
-        GPIO.output(17, True)
-        GPIO.output(18, False)
-    elif fanmode == 75:
-        GPIO.output(17, True)
-        GPIO.output(18, True)
-    else:
-        GPIO.output(17, False)
-        GPIO.output(18, False)
-    # cpu temp will be updated every 5 seconds
-    time.sleep(5)
-    i += 1
-    # log cpu temp and fan speed
-    print("----- Run Nr.:", i, "\nCpu temperature measured: ", str(thermal) + "°C", "- Fanspeed: ", str(fanmode) + "%")
+# - Display the above listed stats using small display with buttons for modes