From cfd589b04bf657afc73cf0aa453dedae8a72994e Mon Sep 17 00:00:00 2001
From: grabowski <berwn@buildfor.life>
Date: Thu, 5 Feb 2026 14:38:51 +0700
Subject: [PATCH] Only auto-control PSU in continuous mode

Single measurements don't toggle PSU - the device handles it.
PSU auto-control now only happens with --continuous flag.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
---
 hpcs6500.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/hpcs6500.py b/hpcs6500.py
index 242cedf..f23aa2e 100644
--- a/hpcs6500.py
+++ b/hpcs6500.py
@@ -823,7 +823,8 @@ def main():
         csv_writer.writeheader()
         print(f"Saving to: {args.csv}")
 
-    use_psu = not args.no_psu and not args.passive
+    # Only control PSU if explicitly requested or in continuous mode
+    use_psu = args.continuous and not args.no_psu and not args.passive
 
     try:
         if use_psu: