From f201ccb55b9d518c728d5c8aaa0cf3206b69801f Mon Sep 17 00:00:00 2001
From: Nathan Zadoks <nathan@nathan7.eu>
Date: Sun, 4 Dec 2011 13:03:20 +0100
Subject: Added an option to make init.g on SD run on boot.

---
 Sprinter/Configuration.h |  2 ++
 Sprinter/Sprinter.pde    | 13 +++++++++++--
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/Sprinter/Configuration.h b/Sprinter/Configuration.h
index df52a08..d594094 100644
--- a/Sprinter/Configuration.h
+++ b/Sprinter/Configuration.h
@@ -49,6 +49,8 @@ const bool Z_ENDSTOP_INVERT = false;
 
 // Comment out (using // at the start of the line) to disable SD support:
 #define SDSUPPORT
+// Uncomment to make Sprinter run init.g from SD on boot
+//#define SDINITFILE
 
 
 //// ADVANCED SETTINGS - to tweak parameters
diff --git a/Sprinter/Sprinter.pde b/Sprinter/Sprinter.pde
index 657efed..e3126b8 100644
--- a/Sprinter/Sprinter.pde
+++ b/Sprinter/Sprinter.pde
@@ -176,8 +176,17 @@ unsigned long stepper_inactive_time = 0;
           Serial.println("volume.init failed");
     else if (!root.openRoot(&volume)) 
           Serial.println("openRoot failed");
-    else 
-            sdactive = true;
+    else{
+          sdactive = true;
+          #ifdef SDINITFILE
+            file.close();
+            if(file.open(&root, "init.g", O_READ)){
+                sdpos = 0;
+                filesize = file.fileSize();
+                sdmode = true;
+            }
+          #endif
+    }
   #endif
   }
   
-- 
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