From 8d2205ca2e36d5ddc1e06673810751c38b8b13af Mon Sep 17 00:00:00 2001
From: Julian Smith <jules@op59.net>
Date: Sun, 1 Aug 2021 22:42:35 +0100
Subject: [PATCH] src/Autopilot/digitalfilter.cxx: show subsystemId() in debug
 output.

---
 src/Autopilot/digitalfilter.cxx | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Autopilot/digitalfilter.cxx b/src/Autopilot/digitalfilter.cxx
index 3ca30e350..56f1e8a9e 100644
--- a/src/Autopilot/digitalfilter.cxx
+++ b/src/Autopilot/digitalfilter.cxx
@@ -922,8 +922,8 @@ void DigitalFilter::update( bool firstTime, double dt)
   set_output_value( output );
 
   if(_debug) {
-    std::cout << "input:" << input
-              << "\toutput:" << output << std::endl;
+    std::cout << subsystemId() << ": input=" << input
+              << "\toutput=" << output << std::endl;
   }
 }