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Marlin/src/module/planner.h

@@ -210,11 +210,10 @@ typedef struct block_t {
 
   // Advance extrusion
   #if ENABLED(LIN_ADVANCE)
-    bool use_advance_lead;
-    uint16_t advance_speed,                 // STEP timer value for extruder speed offset ISR
-             max_adv_steps,                 // max. advance steps to get cruising speed pressure (not always nominal_speed!)
-             final_adv_steps;               // advance steps due to exit speed
-    float e_D_ratio;
+    uint32_t la_advance_rate;               // The rate at which steps are added whilst accelerating
+    uint8_t  la_scaling;                    // Scale ISR frequency down and step frequency up by 2 ^ la_scaling
+    uint16_t max_adv_steps,                 // Max advance steps to get cruising speed pressure
+             final_adv_steps;               // Advance steps for exit speed pressure
   #endif
 
   uint32_t nominal_rate,                    // The nominal step rate for this block in step_events/sec
@@ -977,7 +976,7 @@ class Planner
       return target_velocity_sqr - 2 * accel * distance;
     }
 
-    #if ENABLED(S_CURVE_ACCELERATION)
+    #if EITHER(S_CURVE_ACCELERATION, LIN_ADVANCE)
       /**
        * Calculate the speed reached given initial speed, acceleration and distance
        */