From what I recall the Timex heart rate monitor presents itself as a
vendor specific HID device. If so, the exclusive access issue you
are experiencing is the IOUSBHIDDriver matching to IOUSBInterface.
You can choose to use the HID Manager talk to the device, or setup a
code-less kext that prevents the IOUSBHIDDriver from matching on the
interface. There are plenty of messages in the archives that explain
how to accomplish this.
- Rob
On Feb 20, 2006, at 6:43 PM, Pat Murray wrote:
I am trying to port timexdr, http://developer.berlios.de/projects/
timexdr/, to a mac. A Timex Data Recorder is an EEPROM USB device
from timex that records GPS and Heart Rate Data. My problem is with
usb_claim_interface or as it is called in IOKit framework
USBInterfaceOpen and/or USBInterfaceOpenSeize. I can not figure out
how to take control of the interface or the device. I get
a-536870203 or - 0xE00002C5 error ((USBInterfaceOpen): another
process has device opened for exclusive access). How can I find out
what process has control of it? Since it is an EEPROM does the
kernel just take control of it? How can I get data off it?
Thank you.
USB Probe Logger says:
33.379 [1] IOUSBInterface[0x2a82400]::handleOpen failing because
super::handleOpen failed (someone already has it open)
33.379 [1] IOUSBInterface[0x2a82400]::open super::open failed (0x0)
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