From 4d8efcdd056a021023b8c7d7942a05e8530adafe Mon Sep 17 00:00:00 2001
From: Asbelos <asbelos@btinternet.com>
Date: Wed, 1 Mar 2023 16:32:05 +0000
Subject: [PATCH] Reinstate obsolete <s>

---
 DCCEXParser.cpp  | 6 ++++--
 TrackManager.cpp | 9 +++++++++
 TrackManager.h   | 1 +
 3 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/DCCEXParser.cpp b/DCCEXParser.cpp
index c3895f7..9e2cf5f 100644
--- a/DCCEXParser.cpp
+++ b/DCCEXParser.cpp
@@ -503,8 +503,10 @@ void DCCEXParser::parseOne(Print *stream, byte *com, RingStream * ringStream)
         return;
 
     case 'c': // SEND METER RESPONSES <c>
-        // No longer supported because of multiple tracks See <G> and <I>
-        break;
+        // No longer useful because of multiple tracks See <JG> and <JI>
+        if (params>0) break;
+        TrackManager::reportObsoleteCurrent(stream);
+        return;
 
     case 'Q': // SENSORS <Q>
         Sensor::printAll(stream);
diff --git a/TrackManager.cpp b/TrackManager.cpp
index 8521889..33d1d8a 100644
--- a/TrackManager.cpp
+++ b/TrackManager.cpp
@@ -424,6 +424,15 @@ POWERMODE TrackManager::getProgPower() {
     return POWERMODE::OFF;   
   }
 
+void TrackManager::reportObsoleteCurrent(Print* stream) {
+  // This function is for backward JMRI compatibility only
+  // It reports the first track only, as main, regardless of track settings.
+  //  <c MeterName value C/V unit min max res warn>
+  int maxCurrent=track[0]->raw2mA(track[0]->getRawCurrentTripValue());
+  StringFormatter::send(stream, F("<c CurrentMAIN %d C Milli 0 %d 1 %d>\n"), 
+            track[0]->raw2mA(track[0]->getCurrentRaw(false)), maxCurrent, maxCurrent);                  
+}
+
 void TrackManager::reportCurrent(Print* stream) {
     StringFormatter::send(stream,F("<jI"));
     FOR_EACH_TRACK(t) {
diff --git a/TrackManager.h b/TrackManager.h
index 07f33ca..4a548cc 100644
--- a/TrackManager.h
+++ b/TrackManager.h
@@ -79,6 +79,7 @@ class TrackManager {
     static void sampleCurrent();
     static void reportGauges(Print* stream);
     static void reportCurrent(Print* stream);
+    static void reportObsoleteCurrent(Print* stream); 
     static int16_t joinRelay;
     static bool progTrackSyncMain;  // true when prog track is a siding switched to main
      static bool progTrackBoosted;   // true when prog track is not current limited