SM6FBQ / HackRF clone - History

Merge pull request #1155 from greatscottgadgets/platform-detect

Detect hardware platform at run-time.

Merge pull request #1154 from greatscottgadgets/clkout-source

firmware: use consistent clock source

Correct the calculation of dBfs signal level.

dBFS is defined in AES Standard AES17-1998, IEC 61606, and ITU-T Recs.
P.381 and P.382, such that the RMS value of a full-scale sine wave is
designated 0 dBFS.

A full scale sine wave on HackRF has the range -127 to 127.

We calculate the full scale ratio relative to a signal in which both I
and Q are held at 127. This represents a signal with sqrt(2) times
the amplitude, and thus twice the power, of a full scale sine wave.

Therefore to obtain dBfs by the above definition, we add 3dB.

In CW mode, set only the I component to the specified amplitude.

Don't return -1 from the TX callback that provides the last data.

Set valid_length correctly in hackrf_transfer TX callback.

Make libhackrf honour the valid_length set by TX callback.

Rearrange to avoid duplicating sample limit return path.