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david rice
2026-04-09 08:45:57 +01:00
parent 017c3b19f0
commit 2385fc6878
7 changed files with 321 additions and 14 deletions
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39
analyze_captures.py
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@@ -21,7 +21,10 @@ from dotenv import load_dotenv
load_dotenv(Path(__file__).parent / ".env")
from csv_preprocessor import analyze_file, analyze_lp_file, group_captures, ChannelMetrics, LPMetrics
from csv_preprocessor import (
analyze_file, analyze_lp_file, analyze_1v8_file,
group_captures, ChannelMetrics, LPMetrics, V1V8Metrics,
)
DATA_DIR = Path(__file__).parent / "data"
REPORTS_DIR = Path(__file__).parent / "reports"
@@ -30,9 +33,12 @@ CLAUDE_MODEL = "claude-opus-4-6"
SYSTEM_PROMPT = (
"You are an expert in MIPI D-PHY signal integrity analysis. "
"You will be given compact pre-processed summaries of oscilloscope captures "
"from a MIPI CLK and DAT0 differential pair. "
"Each capture has three passes: sig (high-res HS quality), proto (long-window HS stats), "
"and lp (single-ended, shows LP-11/LP-00/HS burst structure including the SoT sequence). "
"from a MIPI CLK and DAT0 differential pair, plus 1.8 V supply rail measurements. "
"The MIPI PHY (NXP i.MX 8M Mini) drives LP states from the 1.8 V VDDIO. "
"Each capture has up to four data sets: "
"sig (high-res HS quality), proto (long-window HS stats), "
"lp (single-ended LP-11/LP-00/HS burst including SoT sequence), "
"and pwr (1.8 V supply captured during the LP→HS transition). "
"Analyse the data for trends, degradation, anomalies, or consistent spec concerns "
"across captures. Be concise and actionable."
)
@@ -56,13 +62,18 @@ def process_capture(
lines = [f"=== Capture {num:04d} {ts} ==="]
metrics_list: list[ChannelMetrics | LPMetrics] = []
for key in ("proto_clk", "proto_dat", "sig_clk", "sig_dat", "lp_clk", "lp_dat"):
for key in ("proto_clk", "proto_dat", "sig_clk", "sig_dat", "lp_clk", "lp_dat", "pwr_1v8"):
if key not in files:
lines.append(f" [{key}] MISSING")
if key == "pwr_1v8":
lines.append(f" [{key}] NOT CAPTURED (Rigol not connected or no droop)")
else:
lines.append(f" [{key}] MISSING")
continue
try:
if key.startswith("lp_"):
m = analyze_lp_file(files[key])
elif key == "pwr_1v8":
m = analyze_1v8_file(files[key])
else:
m = analyze_file(files[key])
lines.append(m.summary())
@@ -82,16 +93,20 @@ def build_prompt(all_summaries: list[str]) -> str:
"Each capture has three passes per lane (CLK and DAT0):\n"
" sig — high-res HS differential (rise/fall times)\n"
" proto — long-window HS differential (jitter, clock freq, amplitude)\n"
" lp — single-ended LP state capture (LP-11 voltage, SoT sequence, HS bursts)\n\n"
" lp — single-ended LP state capture (LP-11 voltage, SoT sequence, HS bursts)\n"
" pwr — 1.8 V supply rail captured during LP→HS transition (droop, ripple, spec)\n\n"
f"{body}\n\n"
"Please:\n"
"1. Identify any consistent spec concerns (HS voltage, LP-11 voltage, LP-low timing).\n"
"2. Highlight any trends over captures (amplitude drift, jitter, LP-11 voltage, etc.).\n"
"2. Highlight any trends over captures (amplitude drift, jitter, LP-11 voltage, 1.8 V droop, etc.).\n"
"3. Flag anomalies — missing LP transitions, short LP-low, unexpected burst counts.\n"
"4. For any ERROR or WARNING lines in the summaries, explain the most likely cause "
" (e.g. missing file, bad trigger, signal absent, probe issue) and what to check.\n"
"5. Provide specific, actionable recommendations to address all identified issues and anomalies.\n"
"6. Summarise overall signal health in 2–3 sentences."
"4. Correlate 1.8 V supply droop/ripple with MIPI LP anomalies — does droop depth or ripple "
" correlate with SoT timing violations, short LP-low plateaux, or LP-11 voltage drops? "
" If pwr data is absent, note that supply correlation could not be assessed.\n"
"5. For any ERROR or WARNING lines in the summaries, explain the most likely cause "
" (e.g. missing file, bad trigger, signal absent, probe issue, supply marginal) and what to check.\n"
"6. Provide specific, actionable recommendations to address all identified issues and anomalies.\n"
"7. Summarise overall signal health in 2–3 sentences."
)