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ew8bakandClaude Opus 4.8
d08fc17056
TX path for Pluto/AD936x (RX was already working): - PlutoBackend: continuous full-duplex TX stream (cf-ad9361-dds-core-lpc) with FIFO + push thread; SendDUCIQ upsamples WDSP 192k -> device rate (integer, linear interp), 24->16 bit, Q inverted; zeros on underrun. - Power via output attenuator (ADI-recommended): SetTxAtten writes hardwaregain on voltage0(out). Controller maps drive% -> dB (PlutoTxAttForDrive/ApplyPlutoTxAtten); -89.75 dB on RX (~off), ceiling PlutoTxMaxAttDb on 100% drive. - Configurable max-att (default -10 dB, ADI-linear) for external amp: persisted in global settings, UI spin on PA page, routed through controller SetPlutoTxMaxAtt (UI stays decoupled from logic). - RadioBackend: virtual SetTxAtten (no-op for HPSDR). - Update doc/PLUTO_INTEGRATION_PLAN.md: phases 3/4/5 + risks. Builds clean (headless + qt6 GUI). Not yet verified on hardware. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>