mirror of
https://github.com/NawfalMotii79/PLFM_RADAR.git
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Jason
4989c33aa6
Wire a per-frame MCU→FPGA "beam pattern ready" handshake so the chirp scheduler can stall between 48-chirp frames until the MCU finishes writing the next ADAR1000 pattern. The legacy unused stm32_new_chirp input on PD8 is repurposed as stm32_beam_ready; chirp_scheduler.v gets a new S_BEAM_WAIT state entered after each frame_pulse and an 80 ms watchdog so a missed MCU toggle degrades to wall-clock cadence with a sticky telemetry bit rather than stalling the radar. Cold-reset defaults the handshake off (host_handshake_enable=0, new opcode 0x1A); the GUI opts in once the MCU PD8 wiring is verified on the bench. Both the FT601 and FT2232H status word 4 paths get the new beam_handshake_watchdog_fired sticky at bit [1] (reclaimed from the range_mode retirement in commit 1). RTL: - chirp_scheduler.v: 2-FF ASYNC_REG sync on beam_ready_async; 1-cycle edge detect (any transition, MCU side uses HAL_GPIO_TogglePin); new S_BEAM_WAIT state entered at frame_pulse when host_handshake_enable=1; 23-bit beam_watchdog counter with BEAM_WATCHDOG_MAX = 8_000_000 (~80 ms at 100 MHz, ~10 nominal frames); beam_handshake_watchdog_fired output sticky across mixers_enable cycles, cleared only by reset_n; mid-wait disable releases the FSM so dropping the opcode never strands the radar between frames. - radar_receiver_final.v: thread stm32_beam_ready_async + host_handshake_enable + beam_handshake_watchdog_fired through the scheduler instance. - radar_system_top.v: rename input port stm32_new_chirp → stm32_beam_ready; add host_handshake_enable register (cold-reset = 1'b0); opcode 0x1A dispatch (value[0]); add rx_beam_handshake_watchdog wire; pack into status_words[4][1] in both USB paths. - radar_system_top_50t.v: rename wrapper port + sub-instance wiring. - usb_data_interface.v + usb_data_interface_ft2232h.v: add status_beam_handshake_watchdog input + 2-FF level CDC (same convention as F-6.4 / F-1.2 stickies); refresh word-4 layout doc comment; pack beam_handshake_wd_sync_1 into status_words[4][1]. XDC: - xc7a50t_ftg256.xdc + xc7a200t_fbg484.xdc: rename stm32_new_chirp port references to stm32_beam_ready (same PD8 pin, F13 on 50T / L18 on 200T). MCU: - main.h: add FPGA_BEAM_READY_Pin = GPIO_PIN_8 + FPGA_BEAM_READY_GPIO_Port = GPIOD alongside the existing FPGA_FRAME_PULSE alias. - main.cpp:runRadarPulseSequence: insert HAL_GPIO_TogglePin(GPIOD, GPIO_PIN_8) after each setCustomBeamPattern16(RX) — once after the per-azimuth broadside (vector_0), once after matrix1, once after matrix2 — between the SPI burst completion and waitForFramePulse. GUI: - radar_protocol.py: Opcode.HANDSHAKE_ENABLE = 0x1A; StatusResponse.beam_handshake_watchdog = 0 default; parse word 4 bit [1] in parse_status_packet; update word-4 layout comment. - test_GUI_V65_Tk.py: add beam_handshake_watchdog kwarg to _make_status_packet (sets bit [1] of word 4); refresh test_parse_status_word4_layout_co_spec to cover the new bit (used+9=32); add test_parse_status_beam_handshake_watchdog round-trip; test_handshake_enable_opcode pins 0x1A; defaults / chirps_mismatch / agc-coexist tests gain a watchdog==0 assertion; bump test_all_rtl_opcodes_present expected set to include 0x17/0x18/0x19/0x1A. TB: - new tb_chirp_scheduler_handshake.v (16 checks): legacy open-loop, edge exit (rising + falling), 200-cycle idle hold, watchdog auto-advance via force on dut.beam_watchdog, sticky-survives-mixers_disable, mid-wait disable release, reset_n clears sticky. - run_regression.sh: register the new TB in PHASE 1. - tb_radar_receiver_final.v: tie the 3 new receiver ports off (beam_ready_async=0, handshake_enable=0, watchdog unconnected). - tb_system_mechanics.v / tb_system_opcodes.v: explicit .stm32_beam_ready(1'b0) connection (the cold-reset host_handshake_enable=0 keeps the FSM out of S_BEAM_WAIT). - tb_usb_data_interface.v / tb_usb_protocol_v2.v / tb_e2e_dsp_to_host.v / tb_ft2232h_frame_drop.v: tie .status_beam_handshake_watchdog(1'b0). Ride-along ruff sweep (14 → 0 across the repo): - tb/cosim/compare_independent.py: RUF003 — '5×' → 'at least 5x'. - tb/cosim/gen_e2e_expected.py: noqa: E402 on the post-sys.path import; drop unused EXPECTED_RANGE_BIN + EXPECTED_DOPPLER_BIN_PER_SF imports; fold the detect-class slot if/else into a ternary (SIM108). - tb/cosim/gen_e2e_stimulus.py: drop int() wrapping round() at four call sites (RUF046 — round() already returns int in Python 3); rewrite the range-bin derivation comment block from code-like `# range_bin = ...` to prose (ERA001); strip stray f from placeholder-free error string (F541). - tb/cosim/tb_e2e_dsp_to_host_parse.py: open(path, 'r') → open(path) (UP015). - v7/dashboard.py: '3×' → '3x' (RUF003); drop quotes from 'StatusResponse | None' annotation (UP037, file already has `from __future__ import annotations`). CI summary (all suites green pre-commit): - ruff: All checks passed! - FPGA regression (iverilog): 43 / 0 / 0 (incl. new handshake TB 16/16). - MCU tests: 51 / 0 + 34 / 0 + 13 / 13 ADAR1000_AGC. - GUI Tk (test_GUI_V65_Tk): 120 / 0. - GUI v7 (test_v7): 152 / 0. Production rollout note: bitstream cold-resets with host_handshake_enable=0 so existing flashes keep their open-loop cadence until the GUI sends opcode 0x1A=1. Once enabled, the per-pattern dwell tracks both the chirp ladder (PD14 frame_pulse from commit-3 work) and the MCU pattern-write completion (PD8 toggle from this commit), eliminating drift from the SPI burst timing.
