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Heikki Hannikainen hessu at hes.iki.fiHi all, Dimitri merged the patch set to gr-osmosdr master yesterday. Beware of a little catch, there are some examples floating on the net with "hackrf=1" as the device argument. Device index numbers are 0-based (like with rtlsdr and other drivers), so you'll have to use hackrf=0 if you only have a single device attached, hackrf=1 would be the second device. Before this patch the hackrf gr-osmosdr driver did not care about the parameter at all. Device selection by serial number tail ("hackrf=beeff00d") requires updated hackrf firmware. The firmware changes have been in the hackrf git master, but there's no official firmware binary published yet. On Mon, 1 Jun 2015, Heikki Hannikainen wrote: > > Hi, > > I have a little pull request for gr-osmosdr, to enable multiple devices > support for hackrf. This allows doing things like full duplex using two > boards in a single graph. > > You can specify either hackrf=0 and hackrf=1 to select by a device index, or > the serial number (or an unique suffix of a serial number), hackrf=f00d and > hackrf=1234abba. hackrf_info lists multiple devices and their serial numbers. > Apps like gqrx seem to magically work, too, and allow device selection. > > The hackrf project just merged the pull request for libhackrf & tools 3 days > ago, and it's already available in macports at least. > > The gr-osmosdr patches here do work against old libhackrf as before, it > detects the presence of the new hackrf_device_list API and enables multiple > device support only if it is available. > > What is the preferred patch format, I have the changes available as a feature > branch in github? > > https://github.com/hessu/gr-osmosdr/tree/feature/hackrf_multidev - Hessu