Decreases CPU load especially for embedded machines.
Requires Linux >= 4.6 and libusb >= 1.0.21. If this
is not the case or the allocation fails, we will
fall back to buffers allocated in userspace.
Signed-off-by: Steve Markgraf <steve@steve-m.de>
This fixes the following error during "make distcheck":
echo 0.5.3.24-2a36 > ../../.version-t && mv ../../.version-t ../../.version
/bin/sh: ../../.version-t: Permission denied
Since a typo in rtlsdr_set_gpio_output() was fixed,
FC0012 tuners were not detected anymore, as the reset pin
is actually 4, not 5.
Thanks to David Basden et al for reporting the bug.
Signed-off-by: Steve Markgraf <steve@steve-m.de>
At least one distributor of rtl-sdr dongles (rtl-sdr.com) added
a bias-t to their dongles which could be toggled via GPIO P0 of the
RTL2832U chip.
source: http://www.rtl-sdr.com/rtl-sdr-blog-v-3-dongles-user-guide/
Signed-off-by: Steve Markgraf <steve@steve-m.de>
This improves SDR performence for nearby channel interference.
As a sideeffect also improves dynamic range becase ADC is not overloaded
by onwanted singlas.
Signed-off-by: Steve Markgraf <steve@steve-m.de>
In contradiction with the documentation, e4k_reg_write() was
returning the value 2 upon success (the number of bytes written),
not zero as documented.
Patched to return zero upon success.
As a consequence, this corrects also the return value of
e4k_reg_set_mask() and e4k_dc_offset_calibrate().
So far we had 32 * 256KB which was a bit overkill,
15 are more than enough.
15 was chosen instead of 16 because at least on Linux
there seems to be a system-wide limit of 63 transfers
(when they are 256KB large), so 4 dongles can be used
on a single machine without lowering the default transfer
number.
Signed-off-by: Steve Markgraf <steve@steve-m.de>
Otherwise the new transfer status does not propagate
into the xfer->status and we try to cancel all transfers
twice.
Also replace the ifdefs with a single macro for backwards
compatibility.
Signed-off-by: Steve Markgraf <steve@steve-m.de>
after the latest sublib changes we got:
src/Makefile.am:31: compiling `convenience/convenience.c' in
subdir requires `AM_PROG_CC_C_O' in `configure.ac'
Signed-off-by: Steve Markgraf <steve@steve-m.de>
libusb < 1.0.9 doesn't have libusb_handle_events_timeout_completed(),
but libusb <= 1.0.8 doesn't have version.h, so we need to check
for the function.
The cmake-code was borrowed from UHD, which also checks
for libusb_error_name(), we add that as well since it might come
handy later on.
Signed-off-by: Steve Markgraf <steve@steve-m.de>
Now we're using libusb_handle_events_timeout_completed()
instead of the deprecated libusb_handle_events_timeout(),
and notify our async state machine when rtlsdr_cancel_async()
is called. This speeds up exiting from any program that uses the
device asynchronously.
Signed-off-by: Steve Markgraf <steve@steve-m.de>
Steve Markgraf
Martin Hauke
Harald Welte
Kacper Michajłow
Hoernchen
hayati ayguen
Dimitri Stolnikov
Lucas Teske
Jiří Pinkava
lcl
Michael Tatarinov
Denys Berkovskyy
Kyle Keen