So called USB9097 is a bus-master with a USB-serial adapter and a DS2480B based bus-master.
Made by RDing Tech (China), the bus master and associated devices use a different wiring system: 3-wire "stereo" plugs.
The USB9097 is fully supported by OWFS as a DS9097U-type serial bus master, with a USB serial port.
Note: The company's web descriptions are not only badly phrased, they are misleading. (see below)
Ubuntu 10.10 responds to plugging in the adapter with the following entry in 'dmesg'
usb 3-2.4: new full speed USB device using uhci_hcd and address 5The USB9097 should be treated as a standard serial device (like the DS9097U).
ch341 3-2.4:1.0: ch341-uart converter detected
usb 3-2.4: ch341-uart converter now attached to ttyUSB4
For instance the adapter shown above was recognised as a ch341 usb-serial adapter, located on ttyUSB4 in this case. We would start owhttpd as follows:
/opt/owfs/bin/owhttpd --debug -d /dev/ttyUSB4 -p 4444If the USB-> serial converter is not recognised (older kernels), there is a GPL kernel module and some installation instructions available from the manufacturor. USBDriver for Linux download
also cached on this website.
Corrections to the product description
(from PCsensor page).
USB9097 is Rding Tech's 1 wire adapter. It fully can replace DS9097,
DS9490 of MAXIM ( http://www.maxim-ic.com/ )
The main differences of them is:
(1) USB9097 connects to computer through USB port; DS9490 connects to
computer through serial port.
(2) USB9097 connects to sensors through 3.5 mm Audio cables; it can build
hundreds of miniLAN network. Very suit for Non-professionals DIY.
At present, more and more Maxim’s 1wire of products have already appeared
in our life. You can connect 1 wire into your computer through it and easy
to get the data from the computer .such as: get temperature of DS18b20 or
datas of ibutton products.
Adopt DS2480B+USB2UART IC, more detailed product performance; please refer
to MAXIM DS2480B datasheet.
- Dallas has the DS9097U which is a serial adapter with an internal hardware-assist DS2480B chip and is functionally similar to the USB9097 except the USB9097 has a USB-serial front end.
- The DS9097 or DS9097E (Note no 'U' at the end) is a serial "passive" chip -- much simpler and slower. It requires the computer's serial interface to simulate 1-wire communications. Although the USB9097 sounds like a DS9097, it is more accurately a USB9097U
- The DS9490 is a native USB device. The DS9490 is NOT serial. It is based on the DS2490 hardware and is faster than either Maxim's DS9097U or the USB9097.