From 5118f788d24db64dd721c9a672bb2ab1e4f990f7 Mon Sep 17 00:00:00 2001
From: Michael Moon <triffid.hunter@gmail.com>
Date: Tue, 8 Feb 2011 17:52:10 +1100
Subject: [PATCH] preliminary support for soft-limits

---
 gcode_process.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/gcode_process.c b/gcode_process.c
index df1b979..cb61c12 100644
--- a/gcode_process.c
+++ b/gcode_process.c
@@ -82,6 +82,33 @@ void process_gcode_command() {
 	// 	startpoint.E = 0;
 	// moved to dda.c, end of dda_create() and dda_queue.c, next_move()
 
+	// implement axis limits
+	#ifdef	X_MIN
+		if (next_target.X < (X_MIN * STEPS_PER_MM_X))
+			next_target.X = X_MIN;
+	#endif
+	#ifdef	X_MAX
+		if (next_target.X > (X_MAX * STEPS_PER_MM_X))
+			next_target.X = X_MAX;
+	#endif
+	#ifdef	Y_MIN
+		if (next_target.Y < (Y_MIN * STEPS_PER_MM_Y))
+			next_target.Y = Y_MIN;
+	#endif
+	#ifdef	Y_MAY
+		if (next_target.Y > (Y_MAX * STEPS_PER_MM_Y))
+			next_target.Y = Y_MAX;
+	#endif
+	#ifdef	Z_MIN
+		if (next_target.Z < (Z_MIN * STEPS_PER_MM_Z))
+			next_target.Z = Z_MIN;
+	#endif
+	#ifdef	Z_MAX
+		if (next_target.Z > (Z_MAX * STEPS_PER_MM_Z))
+			next_target.Z = Z_MAX;
+	#endif
+
+
 	if (next_target.seen_T) {
 		next_tool = next_target.T;
 	}