142 lines
3.4 KiB
Python
142 lines
3.4 KiB
Python
import serial, time, os
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# CONST
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if os.environ["MD1200BAUD"]:
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MD1200BAUD = int(os.environ["MD1200BAUD"])
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else:
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MD1200BAUD = 38400
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if os.environ["SERIALADAPTER"]:
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SERIALADAPTER = os.environ["SERIALADAPTER"]
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else:
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SERIALADAPTER = "/dev/ttyUSB0"
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GETTEMP = "_temp_rd"
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SETFANPRCNT = "set_speed"
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if os.environ["EPPYSLEEPY"]:
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EPPYSLEEPY = int(os.environ["EPPYSLEEPY"])
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else:
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EPPYSLEEPY = 300 # 5 minutes
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# init
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MDserial = serial.Serial(
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port=SERIALADAPTER,\
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baudrate=MD1200BAUD,\
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parity=serial.PARITY_NONE,\
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stopbits=serial.STOPBITS_ONE,\
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bytesize=serial.EIGHTBITS,\
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timeout=1)
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def getTemp(inpMDreturning):
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MDict = {}
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# Sanitise output
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MDsanit = inpMDreturning.splitlines()
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#if there is smth do smth
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if inpMDreturning:
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for line in MDsanit:
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if ">" in line or "b'" in line:
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continue
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matchstm = line[2:6]
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match matchstm:
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case "BP_1":
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MDict["bp1"] = int(line[12:14])
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case "BP_2":
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MDict["bp2"] = int(line[12:14])
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case "SIM0":
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MDict["sim0"] = int(line[12:14])
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case "SIM1":
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MDict["sim1"] = int(line[12:14])
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case "EXP0":
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MDict["exp0"] = int(line[12:14])
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case "EXP1":
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MDict["exp1"] = int(line[12:14])
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case "AVG":
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MDict["avg"] = int(line[12:14])
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case _:
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continue
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return MDict
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def setSpeed(inSpeeDict: dict):
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bpavrg = 0
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# Some safe fan speedvalue
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defoutprntg = 27
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# default
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outfanprcntg = 0
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# Decide on fan speeds
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LOW_FAN_TRSHD = 21
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HIGH_FAN_TRSHD = 40
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TEMP_FACTOR = 19
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# get backplanbe average
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if inSpeeDict["bp1"] and inSpeeDict["bp2"]:
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bpavrg = (inSpeeDict["bp1"] + inSpeeDict["bp2"]) /2
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outfanprcntg = int((bpavrg / (HIGH_FAN_TRSHD - LOW_FAN_TRSHD)) * TEMP_FACTOR)
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# Set fan speed
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if outfanprcntg >= 20:
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MDserial.write(("set_speed " + str(outfanprcntg) + " \n\r").encode())
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print(f"setting {outfanprcntg}%")
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return 0
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else:
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# Set default value
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MDserial.write(("set_speed " + str(defoutprntg) + " \n\r").encode())
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return 1
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# If something goes super wrong
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return -1
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# Check if UART is used
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# Not neede because when defining MDserial it gets automatically opened
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# Will leave it here anyway
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# try:
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# MDserial.open()
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# except serial.serialutil.SerialException:
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# # MDserial.close()
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# # MDserial.open()
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# print("Port allready opened.\nTry closing it first")
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while True:
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# https://stackoverflow.com/questions/52578122/not-able-to-send-the-enter-command-on-pyserial
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MDserial.write("_temp_rd\n\r".encode())
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time.sleep(1)
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MDreturning = MDserial.read_until(" >").decode()
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MDtempDict = getTemp(MDreturning)
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setSpeedrcode = setSpeed(MDtempDict)
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# good
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if setSpeedrcode == 0:
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# print("Were mint")
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time.sleep(EPPYSLEEPY)
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# not good
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elif setSpeedrcode == 1:
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print("Ambigous temperature readings.\nFalling back to safe values.")
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time.sleep(EPPYSLEEPY)
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# very not good
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elif setSpeedrcode == -1:
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print("o nyo")
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exit()
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# very very very not good
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else:
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print("idk")
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exit()
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print("closing port")
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MDserial.close()
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