Commit Graph

18 Commits

Author SHA1 Message Date
Eric Wild dadabeceaf cmake: actually make linking work
Appending to lists from subdirs does not work as expected, so work
around that to allow collecting the necessary libs.
2020-08-03 02:20:16 +02:00
Wim Lewis ad72126289 Remove unused imports of endian.hpp.
Signed-off-by: Eric Wild <>
2020-08-03 01:20:52 +02:00
Clayton Smith 52fcb0935f A lot of Boost functionality is available in C++11. Since GNU Radio is moving away from Boost, it probably makes sense to do so in gr-osmosdr as well.
This change removes all usage of boost::mutex,
boost::mutex::scoped_lock, boost::unique_lock, and
boost::condition_variable. It also removes usage of boost::shared_ptr
and boost::weak_ptr outside of block definitions (which must continue to
use Boost until GNU Radio 3.9).

Signed-off-by: Eric Wild <>
2020-08-02 23:52:25 +02:00
Piotr Krysik 8cf6840da1 cmake: Go back CMake min ver. 3.8 by removing need for CMP0079
CMake 3.13 is not present in older (~2 years old)
Linux distributions and GNU Radio requires min CMake
version 3.8.

All that is needed in order to avoid bumping CMake version
is to not use 'target_link_libraries' in subdirectories.
Here this is done by creating a list of needed
libraries and adding them for linking at the end (like
it was done in gr-osmosdr before porting to GNU Radio 3.8).

One thing that is lost here is 'PRIVATE' statement in case
of FCD libraries linking.

Signed-off-by: Eric Wild <>
2020-08-02 22:17:05 +02:00
Clayton Smith 96dc33adf1 airspy: fix cmake target_link_libraries
From: Clayton Smith <>
Signed-off-by: Sylvain Munaut <>
2020-02-16 09:52:00 +01:00
Sylvain Munaut 5d59e56ff9 build: Update build system to GR 3.8 standards
Part of GNURadio 3.8 migration

Signed-off-by: Sylvain Munaut <>
2020-02-16 09:52:00 +01:00
Sylvain Munaut 982945a477 build: Update CMakeLists.txt copyright header
Part of GNURadio 3.8 migration

Signed-off-by: Sylvain Munaut <>
2020-02-16 09:51:37 +01:00
Dimitri Stolnikov 6a0cac6609 airspy: correct gcc6 warnings 2017-02-27 23:01:15 +01:00
Alexandru Csete 3823c8efce Custom FIR kernels for Airspy. 2017-02-27 22:27:53 +01:00
Dimitri Stolnikov 164a09fc11 airspy: Option pack={0,1} to enable USB bit packing
Patch provided by Martin Smith.

Last July there were several changes made to the Airspy firmware and
libairspy that added support for a new bit packing mode where 4 sets of
12 bit samples are packed into 3 sets of 16 bits for the transfer across
the USB bus ( ). 25% less data is
transferred across the bus and this is good for some computers with
cheap USB chipsets. There is an overhead of extra memory bandwidth
required on the host side to unpack the data into a useful format, so
for optimal performance bit packing is disabled by default.

The data is automatically unpacked within libairspy before being passed
along, so no changes are required anywhere else if packing is enabled
(or not enabled). Airspy firmware older than v1.0.0-rc6 does not have
the function, but that is detected and handled by libairspy.

I wrote the attached patch to enable packing in gr-osmosdr, which I
tested and it works. It is basically a clone of the bias=0|1 lines as
pack=0|1 and calls the needed libairspy function.


Do some Baseline test with Airspy command line tools to have something
to compare USB throughput results
$ sudo mount -t debugfs none /sys/kernel/debug
$ sudo modprobe usbmon
$ wireshark -i usbmod3 &
$ airspy_info ; sleep 120 ; \
airspy_rx -t 4 -r /dev/null -n 2400000000 ; sleep 120 ; \
airspy_rx -t 4 -r /dev/null -p 1 -n 2400000000 ; sleep 120 ; \
Wireshark->Statistics->IO Graph
The Bytes/Tick are double the actual data rate because of way wireshark
collects the USB packets, I could have added a filter to fix this. But
the relationship is valid 25% less with packing enabled. The data rate
in the IO Grahp drops from 80MB/sec (in+out) [really 40MB/sec] to
60MB/second (in+out) [really 30MB/sec] from unpacked to packed.
10MSPS no packing, packing
2.5MSPS no packing, packing

Verification test with my patched gr-osmosdr
$ sudo mount -t debugfs none /sys/kernel/debug
$ sudo modprobe usbmon
$ wireshark -i usbmod3 &
$ osmocom_fft -a "airspy=0" -s 10000000 --fft-rate=1
$ osmocom_fft -a "airspy=0,pack=1" -s 10000000 --fft-rate=1
$ osmocom_fft -a "airspy=0" -s 2500000 --fft-rate=1
$ osmocom_fft -a "airspy=0,pack=1" -s 2500000 --fft-rate=1
$ osmocom_fft -a "airspy=0" -s 2500000 --fft-rate=1
$ osmocom_fft -a "airspy=0,pack=0" -s 2500000 --fft-rate=1

I ran all of the above tests and the wireshark USB throughput graphs
showed exactly what was expected.

25% less when packing was enabled and if you did not specify the
"pack=1", then no bit packing is performed by libairspy. All the
magnitudes within the FFT windows looked exactly the same as they do
without bit packing.
2016-02-28 17:52:01 +01:00
Dimitri Stolnikov e321095445 airspy: implement sensitivity and linerity gain profiles for set_gain()
use them with airspy,linearity (the default) or airspy,sensitivity
device arguments. Range is 0 to 21. Named gains still work as before.

Requires libairspy commit dc5cbca2f6f03458c40eab7c0f88fdfed60a08ff
2016-01-10 22:33:55 +01:00
Dimitri Stolnikov 275e6aed19 airspy: comment on used gain values 2015-05-13 00:16:54 +02:00
Dimitri Stolnikov 8d25584da3 airspy: query supported samplerates from the firmware 2015-05-12 23:48:43 +02:00
Dimitri Stolnikov 46bb1ad1a0 airspy: increase version string size to 128 2014-12-16 00:15:26 +01:00
Dimitri Stolnikov 20fd6a8c34 airspy: implement DC bias control
use with -a "airspy,bias=1" to enable DC bias on antenna input
2014-11-27 16:38:25 +01:00
Dimitri Stolnikov 163cad2e96 airspy: remove deprecated init/exit calls 2014-11-27 16:28:30 +01:00
Dimitri Stolnikov 13114b7830 airspy: add support for 2.5MSPS rate (requires production firmware) 2014-11-27 16:22:27 +01:00
Dimitri Stolnikov 154c4ddd5f airspy: add support for AirSpy wideband receiver

Usage example:

osmocom_fft -a airspy

The following named gain stages are available:

LNA: 0 to 15, step 1
MIX: 0 to 15, step 1
IF: 0 to 15, step 1

At the moment the gains are not in dB but gain indices internal to R820t
2014-02-09 20:18:10 +01:00