hoehermann/freetecreader

Lesesoftware für den Pearl FreeTec NC7004 "USB-Temperatur- & Luftfeuchtigkeits-Datenlogger V2".

freetecreader's Issues

answer = hd.read(61, timeout_ms=timeout_ms)

Hallo, bekomme beim Zugriff auf:
Pearl Freetec
folgenden Fehler:

File "freetecreader.py", line 23, in request
    if (answer[0] != 0x01):
TypeError: 'NoneType' object is not subscriptable

Der Fehler liegt möglicherweise an der Inkompatibilität meines Gerätes zur Software. lsusb zeigt Folgendes:
idVendor und idProduct habe ich im Programm und der rules-Datei angepasst. Woran könnte es liegen?

Bus 001 Device 005: ID 1941:8021 Dream Link WH1080 Weather Station / USB Missile Launcher
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass            0 
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0         8
  idVendor           0x1941 Dream Link
  idProduct          0x8021 WH1080 Weather Station / USB Missile Launcher
  bcdDevice            1.00
  iManufacturer           0 
  iProduct                0 
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x0022
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              100mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         3 Human Interface Device
      bInterfaceSubClass      0 
      bInterfaceProtocol      0 
      iInterface              0 
        HID Device Descriptor:
          bLength                 9
          bDescriptorType        33
          bcdHID               1.00
          bCountryCode            0 Not supported
          bNumDescriptors         1
          bDescriptorType        34 Report
          wDescriptorLength      52
         Report Descriptors: 
           ** UNAVAILABLE **
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0008  1x 8 bytes
        bInterval              10
can't get debug descriptor: Resource temporarily unavailable
Device Status:     0x0000
  (Bus Powered)

series_counts should be 324

There are 324 series with 64 data points each. So the length of "series_counts" should be 324 (also corresponds to 0x19c-0x58) and the length of "series_dates" 324*8=2592. However there is some undefined space in that case, because 0xd00-0x19c=2916, so there are another 324 Bytes with unknown content.

2 Bytes after the date/time information is interval in seconds

Hi, I found out that the two (unknown) bytes after the date/time is the interval time in seconds. short int, big endian.

Date and Time is being reset while reading from device