Jason ad37f88cd3 test(fft): PR-L — fix tb_fft_engine N=32→16 dropdown bugs (T-4) ...

The TB hard-coded /32.0 in cosine/sine angle math and read out_re[28] /
out_re[30] which don't exist for N=16, so 3/12 checks failed (Test 3
single-tone, Test 7 imag-tone). Pure TB math error — fft_engine.v is
correct (proven by every production MF/Doppler cosim passing bit-exact).

Test 3: /32.0 → /N, peak expected = N/2*1000 = 8000 (not 16000),
        conjugate read at bin N-4=12 (not 28).
Test 7: /32.0 → /N, conjugate peak at bin N-2=14 (not 30).

Result: 12/12 PASS at N=16 with bin 4 = 7997 ≈ 8000.

Closes T-4. Final regression: 42 passed / 0 failed of 42 — first
all-green since PR-Tests-1 exposed hidden failures.

2026-05-01 15:32:35 +05:45

..

constraints

xdc(200t): pin AD9484 OR LVDS pair to U20/V20 (L11_T1_SRCC_14)

2026-04-29 16:01:04 +05:45

formal

chirp-v2 PR-D: chirp_scheduler replaces radar_mode_controller; MF/MTI wave_sel-native

2026-04-30 20:52:32 +05:45

ip/xfft_2048_ip

feat(fpga): swap matched-filter chain to Xilinx LogiCORE FFT v9.1 IP

2026-04-23 12:39:33 +05:45

scripts

chirp-v2 PR-E: plfm_chirp_controller_v2 + scheduler-driven TX via async-FIFO

2026-04-30 21:51:46 +05:45

tb

test(fft): PR-L — fix tb_fft_engine N=32→16 dropdown bugs (T-4)

2026-05-01 15:32:35 +05:45

.gitignore

feat(fpga): swap matched-filter chain to Xilinx LogiCORE FFT v9.1 IP

2026-04-23 12:39:33 +05:45

ad9484_interface_400m.v

fix(fpga): pre-bringup RTL hardening + test-suite hardening

2026-04-22 13:23:38 +05:45

adc_clk_mmcm_integration.md

…

adc_clk_mmcm.v

…

cdc_async_fifo.v

AUDIT-C11: replace Gray-CDC at CIC→FIR with home-grown async FIFO

2026-04-30 10:47:31 +05:45

cdc_modules.v

…

cfar_ca.v

chirp-v2 PR-F: doppler/CFAR widen to 3 sub-frames + 2-class detect

2026-05-01 03:36:03 +05:45

chirp_reference_rom.v

chirp-v2 PR-C: chirp_reference_rom replaces chirp_memory_loader_param

2026-04-30 19:37:43 +05:45

chirp_scheduler.v

chirp-v2 PR-E: plfm_chirp_controller_v2 + scheduler-driven TX via async-FIFO

2026-04-30 21:51:46 +05:45

cic_decimator_4x_enhanced.v

perf(fpga): move CIC comb stages to fabric — 80→70 DSPs (-10)

2026-04-23 11:32:03 +05:45

dac_interface_single.v

…

ddc_400m.v

AUDIT-C11: replace Gray-CDC at CIC→FIR with home-grown async FIFO

2026-04-30 10:47:31 +05:45

ddc_input_interface.v

…

doppler_processor.v

chirp-v2 PR-F follow-up: doppler OOB read + dead cfar wires

2026-05-01 04:06:58 +05:45

edge_detector.v

…

fft_engine_axi_bridge.v

fft_engine_axi_bridge: respect axi_din_tready with 1-deep skid buffer

2026-04-29 17:24:21 +05:45

fft_engine.v

…

fft_twiddle_16.mem

…

fft_twiddle_1024.mem

…

fft_twiddle_2048.mem

…

fir_lowpass.v

AUDIT-S17: document fir_lowpass +4.96 dB DC gain and CIC-droop comp

2026-04-30 10:08:34 +05:45

fpga_self_test.v

AUDIT-S19/S20/S21: replace fpga_self_test tautologies with real arithmetic

2026-04-29 23:27:15 +05:45

frequency_matched_filter.v

…

matched_filter_multi_segment.v

fix(rx): PR-J.2 — pre-collect chirp + slide segments (LONG hang)

2026-05-01 15:07:19 +05:45

matched_filter_processing_chain.v

chirp-v2 PR-C: chirp_reference_rom replaces chirp_memory_loader_param

2026-04-30 19:37:43 +05:45

mti_canceller.v

chirp-v2 PR-D: chirp_scheduler replaces radar_mode_controller; MF/MTI wave_sel-native

2026-04-30 20:52:32 +05:45

nco_400m_enhanced.v

…

plfm_chirp_controller_v2.v

chirp-v2 PR-E: plfm_chirp_controller_v2 + scheduler-driven TX via async-FIFO

2026-04-30 21:51:46 +05:45

radar_params.vh

chirp-v2 PR-G: header/body consistency + runtime MEDIUM ladder

2026-05-01 11:10:06 +05:45

radar_receiver_final.v

chirp-v2 PR-G: header/body consistency + runtime MEDIUM ladder

2026-05-01 11:10:06 +05:45

radar_system_top_50t.v

chirp-v2 PR-F follow-up 2: TB widenings + 50T include + comment

2026-05-01 04:35:08 +05:45

radar_system_top_te0712_dev.v

…

radar_system_top_te0713_dev.v

…

radar_system_top_te0713_umft601x_dev.v

fpga: split gpio_dig5/dig7 by fault class (AUDIT-S10)

2026-04-29 20:06:52 +05:45

radar_system_top.v

chirp-v2 PR-G: header/body consistency + runtime MEDIUM ladder

2026-05-01 11:10:06 +05:45

radar_transmitter.v

chirp-v2 PR-E: plfm_chirp_controller_v2 + scheduler-driven TX via async-FIFO

2026-04-30 21:51:46 +05:45

range_bin_decimator.v

AUDIT-S12: parameterize output_bin_count zero-literals in range_bin_decimator

2026-04-30 09:04:01 +05:45

run_regression.sh

test(realdata): PR-K — synthetic regen of doppler/fullchain realdata fixtures

2026-05-01 14:26:54 +05:45

rx_gain_control.v

…

rx_long_seg0_i.mem

chirp-v2 PR-B: 3-waveform mem generator + 11 new .mem files

2026-04-30 17:46:08 +05:45

rx_long_seg0_q.mem

chirp-v2 PR-B: 3-waveform mem generator + 11 new .mem files

2026-04-30 17:46:08 +05:45

rx_long_seg1_i.mem

chirp-v2 PR-B: 3-waveform mem generator + 11 new .mem files

2026-04-30 17:46:08 +05:45

rx_long_seg1_q.mem

chirp-v2 PR-B: 3-waveform mem generator + 11 new .mem files

2026-04-30 17:46:08 +05:45

rx_medium_i.mem

chirp-v2 PR-B: 3-waveform mem generator + 11 new .mem files

2026-04-30 17:46:08 +05:45

rx_medium_q.mem

chirp-v2 PR-B: 3-waveform mem generator + 11 new .mem files

2026-04-30 17:46:08 +05:45

rx_short_i.mem

chirp-v2 PR-B: 3-waveform mem generator + 11 new .mem files

2026-04-30 17:46:08 +05:45

rx_short_q.mem

chirp-v2 PR-B: 3-waveform mem generator + 11 new .mem files

2026-04-30 17:46:08 +05:45

tx_long_lut.mem

chirp-v2 PR-B: 3-waveform mem generator + 11 new .mem files

2026-04-30 17:46:08 +05:45

tx_medium_lut.mem

chirp-v2 PR-B: 3-waveform mem generator + 11 new .mem files

2026-04-30 17:46:08 +05:45

tx_short_lut.mem

chirp-v2 PR-B: 3-waveform mem generator + 11 new .mem files

2026-04-30 17:46:08 +05:45

usb_data_interface_ft2232h.v

chirp-v2 PR-G: header/body consistency + runtime MEDIUM ladder

2026-05-01 11:10:06 +05:45

usb_data_interface.v

AUDIT-C16: parameterize NUM_CELLS + sample_counter width for 200T

2026-04-29 23:01:41 +05:45

xfft_16.v

…

xfft_2048.v

feat(fpga): swap matched-filter chain to Xilinx LogiCORE FFT v9.1 IP

2026-04-23 12:39:33 +05:45