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projecthorus / horusdemodlib

High Altitude Balloon Telemetry Library
GNU Lesser General Public License v2.1
52 stars 26 forks source link

Installation Looked Good, Then ... #137

Closed lukepurdy64 closed 1 year ago

lukepurdy64 commented 1 year ago

I've tried two different SDRs and the installation on my Raspberry Pi appeared to be fine. However, when I try to run the start script, I get this. It appears to see the hardware, but can't talk to it. Any ideas on next steps?

$ sudo /home/pi/horusdemodlib/start_rtlsdr.sh & [1] 1217 Found horus_demod. Found bc. Entering venv. Using SDR Centre Frequency: 434194000 Hz. Using FSK estimation range: 1000 - 11000 Hz Using AGC. Found 1 device(s): 0: Realtek, RTL2838UHIDIR, SN: 00000001

Using device 0: Generic RTL2832U OEM usb_claim_interface error -6 Failed to open rtlsdr device #0.

[1]+ Exit 1

dbrooke commented 1 year ago

You probably already have something running which is accessing the SDR, possibly from previously running the same command as the trailing '&' will put it in background and this is likely not what you want when starting it from the command line.

Also sudo shouldn't be needed as the program can run as an unprivileged user as long as the rtl-sdr software was installed with the correct udev rules.

lukepurdy64 commented 1 year ago

That was it! Thanks so much.