From ac7f634956254f87b45cdb75be782b23b8865a59 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jo=C3=A3o=20Br=C3=A1zio?= <jbrazio@gmail.com>
Date: Tue, 10 May 2016 14:03:34 +0100
Subject: [PATCH] Removed the DISABLE from HOST_KEEPALIVE_FEATURE option

---
 Marlin/Conditionals.h  | 6 +++---
 Marlin/Configuration.h | 8 +++-----
 Marlin/Marlin_main.cpp | 2 +-
 3 files changed, 7 insertions(+), 9 deletions(-)

diff --git a/Marlin/Conditionals.h b/Marlin/Conditionals.h
index 41dcec76c..34c58ca21 100644
--- a/Marlin/Conditionals.h
+++ b/Marlin/Conditionals.h
@@ -395,10 +395,10 @@
   #endif
 
   /**
-   * Avoid double-negatives for enabling features
+   * Host keep alive
    */
-  #if DISABLED(DISABLE_HOST_KEEPALIVE)
-    #define HOST_KEEPALIVE_FEATURE
+  #ifndef HOST_KEEPALIVE_INTERVAL
+    #define HOST_KEEPALIVE_INTERVAL 2
   #endif
 
   /**
diff --git a/Marlin/Configuration.h b/Marlin/Configuration.h
index 3b164a4f6..157f7a5ac 100644
--- a/Marlin/Configuration.h
+++ b/Marlin/Configuration.h
@@ -733,13 +733,11 @@ const bool Z_MIN_PROBE_ENDSTOP_INVERTING = false; // set to true to invert the l
 //
 // Host Keepalive
 //
-// By default Marlin will send a busy status message to the host
+// When enabled Marlin will send a busy status message to the host
 // every couple of seconds when it can't accept commands.
 //
-//#define DISABLE_HOST_KEEPALIVE // Enable this option if your host doesn't like keepalive messages.
-#if DISABLED(DISABLE_HOST_KEEPALIVE)
-  #define DEFAULT_KEEPALIVE_INTERVAL 2 // Number of seconds between "busy" messages. Set with M113.
-#endif
+#define HOST_KEEPALIVE_FEATURE    // Disable this if your host doesn't like keepalive messages
+#define HOST_KEEPALIVE_INTERVAL 2 // Number of seconds between "busy" messages. Set with M113.
 
 //
 // M100 Free Memory Watcher
diff --git a/Marlin/Marlin_main.cpp b/Marlin/Marlin_main.cpp
index 45907f355..6ce0ce6b6 100644
--- a/Marlin/Marlin_main.cpp
+++ b/Marlin/Marlin_main.cpp
@@ -488,7 +488,7 @@ static bool send_ok[BUFSIZE];
 
   static MarlinBusyState busy_state = NOT_BUSY;
   static millis_t next_busy_signal_ms = 0;
-  uint8_t host_keepalive_interval = DEFAULT_KEEPALIVE_INTERVAL;
+  uint8_t host_keepalive_interval = HOST_KEEPALIVE_INTERVAL;
   #define KEEPALIVE_STATE(n) do{ busy_state = n; }while(0)
 #else
   #define host_keepalive() ;