Hi!
I have a HackRF. I'm testing it.
It works well receiving in GRC with osmocon source, but when trying to transmit with osmocon sink I receive an error
FATAL: Failed to open HackRF device (-5) HACKRF_ERROR_NOT_FOUND
It is like if it were a problem of permissions, but it is not, the HackRF is working great receiving.
I Have tried with two HackRF, one transmiting one receeiving,
this it the block diagram
I have updated the firmware of both of them to the last one (2017-02)
this is the error output
Using Volk machine: sse4_a_64_orc
gr-osmosdr 0.1.4 (0.1.4) gnuradio 3.7.9
built-in source types: file osmosdr fcd rtl rtl_tcp uhd miri hackrf bladerf rfspace airspy redpitaya
Using HackRF One with firmware 2017.02.1
gr-osmosdr 0.1.4 (0.1.4) gnuradio 3.7.9
built-in sink types: uhd hackrf bladerf redpitaya file
Number of USB devices: 19
USB device 1d50:6089: 000000000000000071c469c82d291f43 skip
USB device 1d50:6089: 000000000000000071c469c825671743 skip
FATAL: Failed to open HackRF device (-5) HACKRF_ERROR_NOT_FOUND
Trying to fill up 1 missing channel(s) with null sink(s).
This is being done to prevent the application from crashing
due to gnuradio bug #528.
The first one is receiving (numer 1), the second (number 0) is
the one wich fails
Using ubuntu 16.04 LTS.
Any clues?
regards