Hi,
I've looked through the archives and read all of the mail on interrupt pipe
communication however I cannot send/receive data to/from my device using OS X
10.2.8.
The device I am trying to communicate with is a UPS with a non-standard USB
implementation. It is in effect emulating a serial port i.e send a string
request e.g. "Q1" and then receive the data.
The device is shown in the USB Prober as a HID device with an interrupt out
pipe (0x81) and an interrupt in pipe (0x02). The HIDExplorer application
shows 3 cookies (2 (Input) ,3 (Output) ,4 (Feature))
When listening in on the windows software that came with the UPS, I can see
many lines like: BULK or INTERRUPT IN (0x02) and BULK or INTERRUPT OUT (0x81)
with the data and requests.
My question is what is the method I should use to replicate this? I've tried:
Using the HID manager
getElement, setElement, queryElement, setReport, getReport.
Using the USB manager in conjunction with a codeless kext:
WritePipe, ReadPipe, DeviceRequest, ControlRequest.
I can send/receive control and Device requests and I can read and set elements
and pipes, but I cannot get any data. Where should I be looking for errors?
/Dave
--
Dave Glason, BSc
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