SM6FBQ / HackRF clone - History

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.

Clarify variables used in TX callback.

The power measurement depends on the number of bytes that were valid
from the previous use of the transfer buffer.

The number of bytes to be read to fill the next transfer, is the full
size of the buffer.

Detect hardware platform at run-time.

Firmware now detects the hardware it is running on at startup and
refuses to run if it is compiled for the wrong platform. The board ID
returned by firmware to the host is now derived from run-time detection
rather than a compile-time value. A separate method to retrieve
compile-time supported platform is added.

On HackRF One, pin straps are checked to determine hardware revision.
This is informational to aid troubleshooting and does not affect any
function.