main.py is fully working.

PC_CONTROL_CODE/main.dht22.py

@@ -1,29 +0,0 @@
-import time
-import board
-import adafruit_dht
-
-# https://randomnerdtutorials.com/raspberry-pi-dht11-dht22-python/
-
-# Sensor data pin is connected to GPIO 4
-sensor = adafruit_dht.DHT22(board.D4)
-# Uncomment for DHT11
-#sensor = adafruit_dht.DHT11(board.D4)
-
-while True:
-    try:
-        # Print the values to the serial port
-        temperature_c = sensor.temperature
-        temperature_f = temperature_c * (9 / 5) + 32
-        humidity = sensor.humidity
-        print("Temp={0:0.1f}ºC, Temp={1:0.1f}ºF, Humidity={2:0.1f}%".format(temperature_c, temperature_f, humidity))
-
-    except RuntimeError as error:
-        # Errors happen fairly often, DHT's are hard to read, just keep going
-        print(error.args[0])
-        time.sleep(2.0)
-        continue
-    except Exception as error:
-        sensor.exit()
-        raise error
-
-    time.sleep(3.0)

PC_CONTROL_CODE/main.py

@@ -2,7 +2,11 @@ import serial, time
 
 # CONST
 MD1200BAUD = 38400
-SERIALADAPTER = "/dev/ttyUSB0"  # In Windows it would be something like COM3
+SERIALADAPTER = "/dev/ttyUSB0"
+GETTEMP = "_temp_rd"
+SETFANPRCNT = "set_speed"
+EPYSLEEPY = 300  # 5 minutes
+#EPYSLEEPY = 150  # 2,5 minutes
 
 # init
 MDserial = serial.Serial(
@@ -14,8 +18,81 @@ MDserial = serial.Serial(
     timeout=1)
 
 
+
+def getTemp(inpMDreturning):
+    MDict = {}
+
+    # Sanitise output
+    MDsanit = inpMDreturning.splitlines()
+
+    #if there is smth do smth
+    if inpMDreturning:
+
+        for line in MDsanit:
+            
+            if ">" in line or "b'" in line:
+                continue
+
+            matchstm = line[2:6]
+
+            match matchstm:
+                case "BP_1":
+                    MDict["bp1"] = int(line[12:14])
+                case "BP_2":
+                    MDict["bp2"] = int(line[12:14])
+                case "SIM0":
+                    MDict["sim0"] = int(line[12:14])
+                case "SIM1":
+                    MDict["sim1"] = int(line[12:14])
+                case "EXP0":
+                    MDict["exp0"] = int(line[12:14])
+                case "EXP1":
+                    MDict["exp1"] = int(line[12:14])
+                case "AVG":
+                    MDict["avg"] = int(line[12:14])
+                case _:
+                    continue
+
+        return MDict
+
+
+def setSpeed(inSpeeDict: dict):
+
+    bpavrg = 0
+    # Some safe fan speedvalue
+    defoutprntg = 27
+    # default
+    outfanprcntg = 0
+
+    # Decide on fan speeds
+    LOW_FAN_TRSHD = 21
+    HIGH_FAN_TRSHD = 40
+    TEMP_FACTOR = 21
+
+    # get backplanbe average 
+    if inSpeeDict["bp1"] and inSpeeDict["bp2"]:
+        bpavrg = (inSpeeDict["bp1"] + inSpeeDict["bp2"]) /2
+
+        outfanprcntg = int((bpavrg / (HIGH_FAN_TRSHD - LOW_FAN_TRSHD)) * TEMP_FACTOR)
+
+    # Set fan speed
+    if outfanprcntg >= 20:
+        MDserial.write(("set_speed " + str(outfanprcntg) + " \n\r").encode())  
+        print(f"setting {outfanprcntg}%")
+        return 0
+    else:
+        # Set default value
+        MDserial.write(("set_speed " + str(defoutprntg) + " \n\r").encode())  
+        return 1
+    
+    # If something goes super wrong
+    return -1
+
+
+
 # Check if UART is used
 # Not neede because when defining MDserial it gets automatically opened
+# Will leave it here anyway
 # try:
 #     MDserial.open()
 # except serial.serialutil.SerialException:
@@ -23,45 +100,32 @@ MDserial = serial.Serial(
 #     # MDserial.open()
 #     print("Port allready opened.\nTry closing it first")
 
-
-def getTemp():
-    print()
-
-def setSpeed():
-    print()
-
 while True:
+    # https://stackoverflow.com/questions/52578122/not-able-to-send-the-enter-command-on-pyserial
+    MDserial.write("_temp_rd\n\r".encode())
+    time.sleep(1)
     MDreturning = MDserial.read_until(" >").decode()
 
-    # sleep(50)
+    MDtempDict = getTemp(MDreturning)
-    MDfanspeed = getTemp(MDreturning)
+    setSpeedrcode = setSpeed(MDtempDict)
-
-    setSpeedrcode = setSpeed()
 
+    # good
     if setSpeedrcode == 0:
-        continue
+        # print("Were mint")
+        time.sleep(EPYSLEEPY)
+    # not good
+    elif setSpeedrcode == 1:
+        print("Ambigous temperature readings.\nFalling back to safe values.")
+        time.sleep(EPYSLEEPY)
+    # very not good
     elif setSpeedrcode == -1:
-        continue
-    else:
         print("o nyo")
         exit()
+    # very very very not good
+    else:
+        print("idk")
+        exit()
 
 
-
+print("closing port")
-    
+MDserial.close()
-
-# https://stackoverflow.com/questions/52578122/not-able-to-send-the-enter-command-on-pyserial
-# MDserial.write("_temp_rd\n\r".encode())
-
-# getTemp()
-# print(MDserial.read_until(" >"))
-
-# fanprct = 23
-
-# MDserial.write(f"set_speed {fanprct}\n\r".encode())
-
-
-
-
-# print("closing port")
-# MDserial.close()

PC_CONTROL_CODE/test.py

@@ -0,0 +1,226 @@
+import serial, time
+
+# CONST
+MD1200BAUD = 38400
+SERIALADAPTER = "/dev/ttyUSB0"
+GETTEMP = "_temp_rd"
+SETFANPRCNT = "set_speed"
+EPYSLEEPY = 300  # 5 minutes
+#EPYSLEEPY = 150  # 2,5 minutes
+
+# init
+# MDserial = serial.Serial(
+#     port=SERIALADAPTER,\
+#     baudrate=MD1200BAUD,\
+#     parity=serial.PARITY_NONE,\
+#     stopbits=serial.STOPBITS_ONE,\
+#     bytesize=serial.EIGHTBITS,\
+#     timeout=1)
+
+# After running .encode() on output
+MDreturn = "b'\r\nBlueDress.105.001 >_temp_rd\r\n\r\n  BP_1[2] = 24c\r\n  BP_2[3] = 24c\r\n  SIM0[0] = 26c\r\n  SIM1[1] = 29c\r\n  EXP0[4] = 43c\r\n  EXP1[5] = 47c\r\n\r\n  AVG = 32c\r\n\r\nBlueDress.105.001 >'"
+# before running .encode() on output
+TrueMDeturn = MDreturn.encode()
+
+
+
+
+
+
+def getTemp(inpMDreturning):
+    # bp1 = 0
+    # bp2 = 0
+    # exp0 = 0
+    # exp1 = 0
+    # simm0 = 0
+    # simm1 = 0
+    # averr = 0
+    MDict = {}
+
+    # print("1")
+
+    # Sanitise output
+    MDsanit = inpMDreturning.splitlines()
+
+    #if there is smth do smth
+    if inpMDreturning:
+        # print("2")
+
+        # print(MDsanit)
+        for line in MDsanit:
+            # print(line)
+            
+            if ">" in line or "b'" in line:
+                continue
+
+            # print(line[2:])
+            # if "BP_1" in line[2:]:
+            #     print("yeeee")
+
+            matchstm = line[2:6]
+
+            # print(matchstm)
+
+            match matchstm:
+                case "BP_1":
+                    # print("BP_1 " + line[12:14])
+                    # bp1 = line[12:14]
+                    MDict["bp1"] = int(line[12:14])
+                case "BP_2":
+                    # print("BP_2 " + line[12:14])
+                    # bp2 = line[12:14]
+                    MDict["bp2"] = int(line[12:14])
+                case "SIM0":
+                    # print("SIM0 " + line[12:14])
+                    # simm0 = line[12:14]
+                    MDict["sim0"] = int(line[12:14])
+                case "SIM1":
+                    # print("SIM1 " + line[12:14])
+                    # simm1 = line[12:14]
+                    MDict["sim1"] = int(line[12:14])
+                case "EXP0":
+                    # print("EXP0 " + line[12:14])
+                    # exp0 = line[12:14]
+                    MDict["exp0"] = int(line[12:14])
+                case "EXP1":
+                    # print("EXP1 " + line[12:14])
+                    # exp1 = line[12:14]
+                    MDict["exp1"] = int(line[12:14])
+                case "AVG":
+                    # print("AVG " + line[12:14])
+                    # averr = line[12:14]
+                    MDict["avg"] = int(line[12:14])
+                case _:
+                    print("ay men")
+                    # continue
+
+            # for thing in line.split(" ")[2:]:
+            #     print(thing)
+            # print(line[12:14])
+        # print(MDsanit.split("\n"))
+
+        return MDict
+        # print(MDict)
+
+
+# for key, thing in getTemp(MDreturn).items():
+#     print(key, thing)
+
+def setSpeed(inSpeeDict: dict):
+    print("skibidi")
+
+    bpavrg = 0
+    # Some safe fan speedvalue
+    defoutprntg = 27
+    # default
+    outfanprcntg = 0
+
+    # Decide on fan speeds
+    LOW_FAN_TRSHD = 21
+    HIGH_FAN_TRSHD = 40
+    TEMP_FACTOR = 21
+
+    # DEBUG
+    # for key, thing in inSpeeDict.items():
+    #     print(key, thing)
+
+    # get backplanbe average 
+    if inSpeeDict["bp1"] and inSpeeDict["bp2"]:
+        bpavrg = (inSpeeDict["bp1"] + inSpeeDict["bp2"]) /2
+
+
+        outfanprcntg = int((bpavrg / (HIGH_FAN_TRSHD - LOW_FAN_TRSHD)) * TEMP_FACTOR)
+        print(f"outfanprcntg is {outfanprcntg}")
+
+    # Set fan speed
+    if outfanprcntg >= 20:
+        # MDserial.write(("set_speed " + str(outfanprcntg) + " \n\r").encode())  
+        return 0
+    else:
+        # Set default value
+        # MDserial.write(("set_speed " + str(defoutprntg) + " \n\r").encode())  
+        return 1
+    
+    # If something goes super wrong
+    return -1
+
+
+
+
+
+while True:
+# if True:
+    # MDserial.write("_temp_rd\n\r".encode())
+
+    # CHANGE AFTER TESTING 
+    # MDreturning = MDserial.read_until(" >").decode()
+    MDreturning = MDreturn
+
+    # sleep(50)
+
+    MDtempDict = getTemp(MDreturning)
+
+    # setSpeed(MDtempDict)
+
+    setSpeedrcode = setSpeed(MDtempDict)
+
+    # good
+    if setSpeedrcode == 0:
+        print("Were mint")
+        time.sleep(EPYSLEEPY)
+    # not good
+    elif setSpeedrcode == 1:
+        print("Ambigous temperature readings.\nFalling back to safe values.")
+        time.sleep(EPYSLEEPY)
+    # very not good
+    elif setSpeedrcode == -1:
+        print("o nyo")
+        exit()
+    # very very very not good
+    else:
+        print("idk")
+
+
+
+
+
+
+
+
+
+# def getTemp():
+#     bp1 = 0
+#     bp2 = 0
+#     #exp0 = 0
+#     #exp1 = 0
+#     #simm0 = 0
+#     #simm1 = 0
+#     getMD1200tempReturn = ""
+
+#     MDserial.write(GETTEMP.encode())
+    
+#     print(MDserial.readlines())
+
+#     MDreturning = MDserial.readlines().decode()
+#     #if there is smth do smth
+#     if len(MDreturning) >= 1:
+#         print("skibidi")
+#         return MDreturning
+
+# try:
+#     MDserial.open()
+# except serial.serialutil.SerialException:
+#     print("Port allready opened.\nTry closing it first")
+    
+
+# # https://stackoverflow.com/questions/52578122/not-able-to-send-the-enter-command-on-pyserial
+# MDserial.write("_temp_rd\n\r".encode())
+
+
+# print(MDserial.read_until(" >"))
+
+# fanprct = 23
+
+# MDserial.write(f"set_speed {fanprct}\n\r".encode())
+
+# MDserial.close()

README.md

@@ -1,8 +1,24 @@
-# Python scripts for changing fan speed on MD1200
+# MD1200 fan noise reduction 
 
-This adjusts fan speed "dynamically" based on average backplane temperature reading.
+A set of scripts that automagically set fan speed on a MD1200 (probably MD1220 as well) based on internal temperature readings.
 
 ## PC
 
+Working working working. 
 
-## STM32F103C6T6
+So far seems to work.
+
+## STM32F103C6T6
+
+I think it needs a MAX2323 between MD1200.
+
+Will look into that.
+
+## Arduino Nano
+
+Same here
+
+
+### FAQ
+
+dc: yuruc3