On 06/30/2010 07:14 AM, Amit Nagal wrote:
sorry my mistake :
what i wanted to ask was ioctl with which application can get
input / output / feature<REPORT ID> and< REPORT LEN> .
Thanx& Regards
Amit Nagal
Amit,
There is a new ioctl() staged for the new merge window which will get
and set feature reports. It is used like this:
/* Set Feature */
buf[0] = 0x9; /* Report Number */
buf[1] = 0xff; /* data */
buf[2] = 0xff;
buf[3] = 0xff;
res = ioctl(fd, HIDIOCSFEATURE(4), buf);
Is that what you're asking for, or are you asking for something which
will tell you which reports are _available_ on the device, and what
their lengths are? There is currently no way to report which reports are
_available_. As Jiri said, HIDRAW does not do any parsing of the report
descriptor. All data is passed "raw" from the user application to the
device.
If you know what type of device you are talking to, then you shouldn't
really need to parse the descriptor in software, because you'll know
what the device supports, right?
Alan.
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