retrogram~plutosdr

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| '__/ _ \ __| '__/ _ \ / _` | '__/ _` | '_ ` _ \  | '_ \| | | | | __/ _ \ `--. \ | | |    / 
| | |  __/ |_| | | (_) | (_| | | | (_| | | | | | | | |_) | | |_| | || (_) /\__/ / |/ /| |\ \ 
|_|  \___|\__|_|  \___/ \__, |_|  \__,_|_| |_| |_| | .__/|_|\__,_|\__\___/\____/|___/ \_| \_|
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Wideband Spectrum analyzer on your terminal/ssh console with ASCII art. Hacked from Ettus UHD RX ASCII Art DFT code for ADALM PLUTO.

Pan & Zoom spectrum using keyboard controls [decrement-Increment]. [Full feature demo]

• Center Frequency using keys [f-F]
• Sampling rate using keys [r-R]
• Bandwidth using keys [b-B]
• Gain using keys [g-G]
• Reference level using keys [l-L]
• Dynamic Range using keys [d-D]
• Frame rate using keys [s-S]
• Peak Hold using keys [h-H]
• DFT bin count using keys [n-N]
• Tuning step using keys [t-T]
• Hide/Show controls using keys [c-C]
• Quit program using keys [q-Q]

Tuning step applies for decrementing / Incrementing Center Frequency, Sampling Rate and Bandwidth.

---

retrogram~plutosdr - ASCII Art Spectrum Analysis for PlutoSDR	
Allowed options:
  --help                      help message
  --uri arg (=ip:192.168.2.1) pluto device uri
  --rate arg (=10000000)      rate of incoming samples (sps) [r-R] 
                              [2.5e6..1..61.44e6]
  --freq arg (=100000000)     RF center frequency in Hz [f-F] [70e6..1..6000e6]
                               
  --gain arg (=73)            gain for the RF chain [g-G] [-3..1..73]
  --bw arg (=56000000)        RF filter bandwidth in Hz [b-B] 
                              [200000..1..56000000]
  --num-bins arg (=512)       the number of bins in the DFT [n-N]
  --frame-rate arg (=15)      frame rate of the display (fps) [s-S]
  --peak-hold (=false)  enable peak hold [h-H]
  --ref-lvl arg (=0)          reference level for the display (dB) [l-L]
  --dyn-rng arg (=80)         dynamic range for the display (dB) [d-D]
  --step arg (=1000000)       tuning step for rate/bw/freq [t-T]
  --show-controls arg (=1)    show the keyboard controls

Requires: libiio, libcurses, libboost-program-options

sudo apt install libiio-dev libncurses5-dev libboost-program-options-dev libgpm-dev

Build:

For running a Linux host with Pluto connected via USB / Ethernet / Wifi.

make

Compiling static binary for arm (raspi / pluto - requires libtinfo-dev libgpm-dev):

make arm

Static binaries for running natively on Pluto can be built on Raspberry Pi (or cross-compiled). The static binary can then be scp'ed to Pluto after build - steps shown below.

Run:

./retrogram-plutosdr --rate 5e6 --bw 5e6 --freq 100e6 --step 1e6

Max rate/bw/gain:

./retrogram-plutosdr --rate 61e6 --bw 56e6 --gain 73 --freq 935e6 --step 5e6

Run natively on Pluto (static binary - requires 'linux' terminfo files):

wget https://github.com/r4d10n/retrogram-plutosdr/raw/master/retrogram-plutosdr.arm
scp retrogram-plutosdr.arm [email protected]:/tmp

scp /usr/share/terminfo/l/linux [email protected]:/tmp         (or)  
wget https://github.com/r4d10n/retrogram-plutosdr/raw/master/linux 
scp linux [email protected]:/tmp

ssh [email protected]

cd /tmp
mkdir /usr/share/terminfo
mkdir /usr/share/terminfo/l
cp linux /usr/share/terminfo/l
export TERM=linux
chmod +x ./retrogram-plutosdr.arm
./retrogram-plutosdr.arm --rate 61e6 --bw 56e6 --gain 73 --freq 935e6 --step 5e6

---

TODO:

• Generic support for osmosdr / soapysdr / rtlsdr devices
• Direct Freq Entry / parameter change
• Mouse tuning
• Modularize / Optimize with std::vector transform
• Waterfall (!) / Markers / Demodulators (!!) :)
• HTML output / Web(sockets)-server