options:

-h, --help

Print usage and exit

-o[filename], --out=[filename] Output to specified file ('-o-' for stdout)

-i[filename], --in=[filename]

Read from specified file ('-i-' for stdin)

--fpga=/path/to/bitstream.bin

Load the FPGA with the specified bitstream

-t, --tx

Enable the transmitter

-l, --loopback

Put transceiver in loopback mode

-f[freq], --freq=[freq]

Center frequency in hertz (70e6 to 6e9)

-b[bw], --bandwidth=[bw]

Bandwidth in hertz (1e6 to 61.44e6)

-g[gain], --gain=[gain]

Gain in decibels (0 to 74)

example: freesrp-io -f2.42e9 -b4e6 -g30 -o-