Initial line number reporting

planner.h

@@ -26,7 +26,7 @@
 
 // The number of linear motions that can be in the plan at any give time
 #ifndef BLOCK_BUFFER_SIZE
-  #define BLOCK_BUFFER_SIZE 18
+  #define BLOCK_BUFFER_SIZE 16
 #endif
 
 // This struct stores a linear movement of a g-code block motion with its critical "nominal" values
@@ -47,6 +47,7 @@ typedef struct {
   float acceleration;            // Axis-limit adjusted line acceleration in (mm/min^2)
   float millimeters;             // The remaining distance for this block to be executed in (mm)
   // uint8_t max_override;       // Maximum override value based on axis speed limits
+  uint32_t line_number;
 } plan_block_t;
 
       
@@ -56,7 +57,7 @@ void plan_reset();
 // Add a new linear movement to the buffer. target[N_AXIS] is the signed, absolute target position 
 // in millimeters. Feed rate specifies the speed of the motion. If feed rate is inverted, the feed
 // rate is taken to mean "frequency" and would complete the operation in 1/feed_rate minutes.
-void plan_buffer_line(float *target, float feed_rate, uint8_t invert_feed_rate);
+void plan_buffer_line(float *target, float feed_rate, uint8_t invert_feed_rate, uint32_t line_number);
 
 // Called when the current block is no longer needed. Discards the block and makes the memory
 // availible for new blocks.