Hi,
Has anyone had any luck interfacing weewx (on a rpi) to this weather
station (which is identical to the Bresser 6 in 1) and if so could you give
me any pointers ?
https://youshiko.co.uk/collections/digital-weather-stations/products/yc9388
My basic assumption is that this is a Fine Offset clone.
The fundamental problem I'm having is with the USB interface
$ lsusb -v -d 1941:8021
*Bus 001 Device 004: ID 1941:8021 Dream Link WH1080 Weather Station / USB
Missile Launcher*
*Device Descriptor:*
* bLength 18*
* bDescriptorType 1*
* bcdUSB 2.00*
* bDeviceClass 0 *
* bDeviceSubClass 0 *
* bDeviceProtocol 0 *
* bMaxPacketSize0 64*
* idVendor 0x1941 Dream Link*
* idProduct 0x8021 WH1080 Weather Station / USB Missile Launcher*
* bcdDevice 0.00*
* iManufacturer 1 Silicon Laboratories Inc.*
* iProduct 2 CCLEL C8488*
* iSerial 3 CCLEL c8488*
* bNumConfigurations 1*
* Configuration Descriptor:*
* bLength 9*
* bDescriptorType 2*
* wTotalLength 0x0022*
* bNumInterfaces 1*
* bConfigurationValue 1*
* iConfiguration 0 *
* bmAttributes 0xc0*
* Self Powered*
* MaxPower 100mA*
* Interface Descriptor:*
* bLength 9*
* bDescriptorType 4*
* bInterfaceNumber 0*
* bAlternateSetting 0*
* bNumEndpoints 1*
* bInterfaceClass 3 Human Interface Device*
* bInterfaceSubClass 0 *
* bInterfaceProtocol 1 Keyboard*
* iInterface 0 *
* HID Device Descriptor:*
* bLength 9*
* bDescriptorType 33*
* bcdHID 1.11*
* bCountryCode 0 Not supported*
* bNumDescriptors 1*
* bDescriptorType 34 Report*
* wDescriptorLength 36*
* Report Descriptor: (length is 36)*
* Item(Global): Usage Page, data= [ 0x00 0xff ] 65280*
* (null)*
* Item(Local ): Usage, data= [ 0x01 ] 1*
* (null)*
* Item(Main ): Collection, data= [ 0x01 ] 1*
* Application*
* Item(Local ): Usage Minimum, data= [ 0x01 ] 1*
* (null)*
* Item(Local ): Usage Maximum, data= [ 0x08 ] 8*
* (null)*
* Item(Global): Logical Minimum, data= [ 0x00 ] 0*
* Item(Global): Logical Maximum, data= [ 0xff ] 255*
* Item(Global): Report Count, data= [ 0x40 ] 64*
* Item(Global): Report Size, data= [ 0x08 ] 8*
* Item(Main ): Input, data= [ 0x02 ] 2*
* Data Variable Absolute No_Wrap Linear*
* Preferred_State No_Null_Position Non_Volatile
Bitfield*
* Item(Local ): Usage Minimum, data= [ 0x01 ] 1*
* (null)*
* Item(Local ): Usage Maximum, data= [ 0x08 ] 8*
* (null)*
* Item(Global): Logical Minimum, data= [ 0x00 ] 0*
* Item(Global): Logical Maximum, data= [ 0xff ] 255*
* Item(Global): Report Count, data= [ 0x08 ] 8*
* Item(Global): Report Size, data= [ 0x08 ] 8*
* Item(Main ): Output, data= [ 0x02 ] 2*
* Data Variable Absolute No_Wrap Linear*
* Preferred_State No_Null_Position Non_Volatile
Bitfield*
* Item(Main ): End Collection, data=none*
* Endpoint Descriptor:*
* bLength 7*
* bDescriptorType 5*
* bEndpointAddress 0x81 EP 1 IN*
* bmAttributes 3*
* Transfer Type Interrupt*
* Synch Type None*
* Usage Type Data*
* wMaxPacketSize 0x0040 1x 64 bytes*
* bInterval 1*
*can't get device qualifier: Resource temporarily unavailable*
*can't get debug descriptor: Resource temporarily unavailable*
*Device Status: 0x0001*
* Self Powered*
Running wee_ device works, but the values returned are all defaults not
what the console is displaying.
$ sudo bin/wee_device --info
*Using configuration file /home/weewx/weewx.conf*
*Using FineOffsetUSB driver version 1.20 (weewx.drivers.fousb)*
*Querying the station...*
*Fine Offset station settings:*
* local time: 2020.01.03 17:47:03 GMT*
* polling mode: PERIODIC*
* abs_pressure: 0*
* current_pos: 0*
* data_changed: 0*
* data_count: 0*
* date_time: 2000-00-00 00:00*
* hum_in_offset: 0*
* hum_out_offset: 0*
* id: 0*
* lux_wm2_coeff: 0*
* magic_1: 0xfa*
* magic_2: 0x 3*
* model: 0*
* rain_coef: 0*
* read_period: 0*
* rel_pressure: 101.8*
* temp_in_offset: 0*
* temp_out_offset: 0*
* timezone: 0*
* unknown_01: 0*
* unknown_18: 3*
* version: 0*
* wind_coef: 0*
* wind_mult: 0*
* max.abs_pressure.date: 2000-00-00 00:00*
* max.abs_pressure.val: 0*
* max.dewpoint.date: 2000-160-03 00:00*
* max.dewpoint.val: 0*
.... (cut similar)
and the log file shows :
*Jan 3 17:45:28 rpi2 wee_device[2565] INFO weewx.drivers.fousb: driver
version is 1.20*
*Jan 3 17:45:28 rpi2 wee_device[2565] INFO weewx.drivers.fousb: polling
mode is PERIODIC*
*Jan 3 17:45:28 rpi2 wee_device[2565] INFO weewx.drivers.fousb: polling
interval is 60*
*Jan 3 17:45:28 rpi2 wee_device[2565] INFO weewx.drivers.fousb: found
station on USB bus= device=*
*Jan 3 17:45:28 rpi2 wee_device[2565] INFO weewx.drivers.fousb: unstable
read: blocks differ for ptr 0x000000*
*Jan 3 17:45:30 rpi2 wee_device[2565] INFO weewx.drivers.fousb: unstable
read: blocks differ for ptr 0x000000*
*Jan 3 17:45:32 rpi2 wee_device[2565] INFO weewx.drivers.fousb: unstable
read: blocks differ for ptr 0x000000*
*.... (many similar cut)*
*Jan 3 17:46:53 rpi2 wee_device[2565] INFO weewx.drivers.fousb: unstable
read: blocks differ for ptr 0x0000e0*
*Jan 3 17:46:55 rpi2 wee_device[2565] INFO weewx.drivers.fousb: unstable
read: blocks differ for ptr 0x0000e0*
*Jan 3 17:46:57 rpi2 wee_device[2565] INFO weewx.drivers.fousb: unstable
read: blocks differ for ptr 0x0000e0*
*Jan 3 17:46:59 rpi2 wee_device[2565] INFO weewx.drivers.fousb: unstable
read: blocks differ for ptr 0x0000e0*
*Jan 3 17:47:01 rpi2 wee_device[2565] INFO weewx.drivers.fousb: unstable
read: blocks differ for ptr 0x0000e0*
*Jan 3 17:47:03 rpi2 wee_device[2565] ERROR weewx.drivers.fousb:
unrecognised magic number fa03*
I've cycled through the model numbers in the weewx.conf [FineOffsetUSB]
settings but this has made no difference.
I should say I was using the latest stable version on a rpi4 but wee_device
crashes with this on the first usb block read (errno 75, Overflow). I am
now using 4.0.0b6 on an rpi2 which at least doesn't crash.
I have attached a laptop running windows with the manufacturers software -
this works perfectly (but the software is very limited) so at least I know
the weather station is fully functional
Thanks
Bob
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