LibreVNA/Software/VNA_embedded/Application/Drivers/FPGA
Roger Henderson 6c06293179 add per-point source PLL phase adjustment support
Adds ability to set phase adjustment on Source PLL for each sweep point.
When sourcePhase != 0, the FPGA executes a CDM toggle sequence after
normal PLL register load to apply the specified phase offset.

Changes:
- MAX2871.vhd: add PHASE_ADJUST input and CDM toggle state machine
- Sweep.vhd: extract phase from config, generate phase adjust signal
- SPIConfig.vhd: handle 112-bit config data (was 96-bit)
- top.vhd: wire phase adjustment signals, widen data buses
- SweepConfigMem.xco: update BRAM width to 112 bits
- FPGA.cpp/hpp: add sourcePhase parameter to WriteSweepConfig

Phase formula: phase_degrees = (sourcePhase / M) * 360
For 180° shift: sourcePhase = M/2

Note: SweepConfigMem IP core must be regenerated before FPGA build.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-01-31 16:57:10 +13:00
..
FPGA.cpp add per-point source PLL phase adjustment support 2026-01-31 16:57:10 +13:00
FPGA.hpp add per-point source PLL phase adjustment support 2026-01-31 16:57:10 +13:00
FPGA_HAL.hpp Test of DFT implementation in FPGA 2020-11-08 14:38:31 +01:00