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Posted: Wed Mar 13, 2019 1:19 am
by TD410

I've been using a Duo with an SBC cubieboard2 along with usb sharing. It works, but being it's only 100Mb eth0, you can guess the rest...

The RPi is limited to USB speeds (480Mbs/) via ethernet, so thought... I'd look for something else that can exceed this as my network is sound.

ASUS Linux tinkerboard 4.19.28-rockchip #5.77 SMP PREEMPT Mon Mar 11 22:54:26 GMT 2019 armv7l GNU/Linux is where I ended up.

I'm still working on the USB sharing, It runs, but something is still not quite right as SDRUno hangs.
I suspect this isn't helping?

Mar 13 00:14:12 tinkerboard kernel: usb 1- reset high-speed USB device number 11 using dwc2
Mar 13 00:14:13 tinkerboard kernel: tusbd: usbd_stub_reset: usb_reset_device returned 0

Moving on, I thought I'd give RSP_TCP a go.. but after installing the api kit.. whatever I do, RSP_TCP/Soapy etc. if barfs.. see below.

Code: Select all

-- LIBSDRPLAY_INCLUDE_DIRS - /usr/local/include
-- LIBSDRPLAY_LIBRARIES - /usr/local/lib/
-- Configuring done
-- Generating done
-- Build files have been written to: /opt/RSPTCPServer/build
all good and groovy... we think?
so the linker goes to work...

Code: Select all

user@tinkerboard:/opt/RSPTCPServer/build$ sudo make
[ 50%] Linking C executable rsp_tcp
/usr/local/lib/ file not recognized: File format not recognized
collect2: error: ld returned 1 exit status
CMakeFiles/rsp_tcp.dir/build.make:95: recipe for target 'rsp_tcp' failed
make[2]: *** [rsp_tcp] Error 1
CMakeFiles/Makefile2:67: recipe for target 'CMakeFiles/rsp_tcp.dir/all' failed
make[1]: *** [CMakeFiles/rsp_tcp.dir/all] Error 2
Makefile:149: recipe for target 'all' failed
make: *** [all] Error 2
any thoughts?



Posted: Wed Mar 13, 2019 6:24 am
by sdrplay
That looks like you've got the wrong API. If you have a 32bit ARM processor then you need the API from the Raspberry Pi section of our downloads page. If you have a 64bit ARM processor then you need the API from the ARM64 section of our downloads page...

Best regards,

SDRplay Support


Posted: Wed Mar 13, 2019 5:45 pm
by hotpaw
My iPhone/iPad app "rtl_tcp SDR" in Apple's iOS App Store has been updated to support rsp_tcp's 16-bit mode and sample rates: ... ?ls=1&mt=8

The app supports spectrum, waterfall, and AM/NFM/FM-mono/LSB/USB/CW demodulation from an rtl_tcp or rsp_tcp connection. Also touch gesture tuning. I tested the app by streaming data from an RSP2 on my Raspberry Pi 3 to my iPhone and iPad using the
rsp_tcp -b 16
command-line option. A very fast WiFi connection is needed for the extra bandwidth required.

Let me know if there are any other SDRPlay extended features you would like supported.

Standard disclaimer: I'm the developer of this app.