HT625B Wind Meter Anemometer

README.md

https://www.habotest.com/sale-13562820-9999-cfm-handheld-digital-anemometer-ht625b-wind-meter-anemometer.html

https://autensdirect.com/2022/03/09/ht625b-anemometer-software-download/

      ========================== Summary =========================
Vendor ID                : 0x1A86 (Nanjing Qinheng Microelectronics Co., Ltd.)
Product ID               : 0x7523
USB Version              : 1.1
Port maximum Speed       : High-Speed
Device maximum Speed     : Full-Speed
Device Connection Speed  : Full-Speed
Self powered             : no
Demanded Current         : 104 mA
Used Endpoints           : 4

      ======================== USB Device ========================

        +++++++++++++++++ Device Information ++++++++++++++++++
Friendly Name            : USB-SERIAL CH340 (COM15)
Device Description       : USB-SERIAL CH340
Device Path 1            : \\?\USB#VID_1A86&PID_7523#8&da31e2b&0&4#{a5dcbf10-6530-11d2-901f-00c04fb951ed} (GUID_DEVINTERFACE_USB_DEVICE)
Device Path 2            : \\?\USB#VID_1A86&PID_7523#8&da31e2b&0&4#{86e0d1e0-8089-11d0-9ce4-08003e301f73} (GUID_DEVINTERFACE_COMPORT)
Kernel Name              : \Device\USBPDO-18
Device ID                : USB\VID_1A86&PID_7523\8&DA31E2B&0&4
Hardware IDs             : USB\VID_1A86&PID_7523&REV_8134 USB\VID_1A86&PID_7523
Driver KeyName           : {4d36e978-e325-11ce-bfc1-08002be10318}\0008 (GUID_DEVCLASS_PORTS)
Driver                   : \SystemRoot\System32\Drivers\CH341S64.SYS (Version: 3.50.2014.8  Date: 2019-03-04  Company: www.winchiphead.com)
Driver Inf               : C:\WINDOWS\inf\oem40.inf
Legacy BusType           : PNPBus
Class                    : Ports
Class GUID               : {4d36e978-e325-11ce-bfc1-08002be10318} (GUID_DEVCLASS_PORTS)
Service                  : CH341SER_A64
Enumerator               : USB

anemometer.py

import struct
from datetime import datetime

def parse_data(hexByte):
    str3 = ""
    num1 = hexByte[10] & 0b10000000

    func_map = {
        0: ("m/s", "VEL"),
        1: ("km/h", "VEL"),
        2: ("mil/h", "VEL"),
        3: ("ft/m", "VEL"),
        4: ("ft/s", "VEL"),
        5: ("knots", "VEL"),
        6: ("CMS", "FLOW"),
        7: ("CMM", "FLOW"),
        8: ("CFM", "FLOW"),
    }

    func_code = hexByte[4]
    if func_code in func_map:
        MainDispUnit, FuncDisp = func_map[func_code]
    else:
        FuncDisp = ""

    num2 = float(int(hexByte[7] * 65536) + int (hexByte[6] * 256) + int(hexByte[5])) / 100.0
    if num2 <= 999.9:
        if num2 <= 99.99:
            MainDisp = f"{num2:05.2f}"
        else:
            MainDisp = f"{num2:06.1f}"
    else:
        MainDisp = f"{num2:07.0f}"

    ScaleLevelDisp = str(hexByte[8])

    rh = float(int(hexByte[10]) * 256 + int(hexByte[9])) / 10.0
    RHDisp = f"{rh:4.1f}"

    if hexByte[12] == 0:
        DPWBDisp = ""
    elif hexByte[12] == 1:
        DPWBDisp = "DewPoint"
    elif hexByte[12] == 2:
        DPWBDisp = "WetBulb"

    temp = float(int(hexByte[14]) * 256 + int (hexByte[13])) /100.0
    TempDisp = f"{temp:4.1f}"

    if hexByte[11] & 1:
        TempUnit = "°F"
    else:
        TempUnit = "°C"

    if hexByte[15] & 1:
        str8 = "HOLD"
    else:
        str8 = ""

    if hexByte[15] & 2:
        str9 = "MAX  "
        labelMaxmin = "REC. MAX"
    elif hexByte[15] & 4:
        str9 = "MIN  "
        labelMaxmin = "REC. MIN"
    elif hexByte[15] & 8:
        str9 = "AVG  "
        labelMaxmin = "REC. AVG"
    else:
        str9 = ""
        labelMaxmin = ""

    recHold = str8 + ("\\" + str9 if str8 and str9 else str9)

    # Get the current date and time
    now = datetime.now()

    # Print the current date
    strDate= now.date()
    strTime = now.time()
    return f"{FuncDisp}\t{MainDisp} {MainDispUnit}\t{DPWBDisp}{TempDisp} {TempUnit}\t{RHDisp}%RH\t{recHold}\t{strDate}\t{strTime}"


import serial # python -m pip install pyserial
ser = serial.Serial('COM15') 
try:
   while True:
       numArray = ser.readline().strip()
       #print ("received data:",[hex(c) for c in numArray]) 
       if (numArray[0]== 6  and numArray[1] == 91) and len(numArray) == 16 :
          # valid line\
          print(parse_data(numArray))
       else:
          print ("received invalid data:",[hex(c) for c in numArray]) 

except KeyboardInterrupt:
   quit()