From 9271d12bf7ad316dfae40465db5876ef1580f022 Mon Sep 17 00:00:00 2001
From: Marek Bel <marek.bel@posta.cz>
Date: Tue, 7 Aug 2018 16:32:32 +0200
Subject: [PATCH] Save 32B of FLASH, fix compiler warning:
 sketch/tmc2130.cpp:238:6: warning: unused parameter 'last_step_mask'
 [-Wunused-parameter].

---
 Firmware/stepper.cpp | 15 +--------------
 Firmware/tmc2130.cpp |  2 +-
 Firmware/tmc2130.h   |  2 +-
 3 files changed, 3 insertions(+), 16 deletions(-)

diff --git a/Firmware/stepper.cpp b/Firmware/stepper.cpp
index cb4e680f..76a110f5 100644
--- a/Firmware/stepper.cpp
+++ b/Firmware/stepper.cpp
@@ -104,8 +104,6 @@ static bool z_endstop_invert = false;
 volatile long count_position[NUM_AXIS] = { 0, 0, 0, 0};
 volatile signed char count_direction[NUM_AXIS] = { 1, 1, 1, 1};
 
-uint8_t LastStepMask = 0;
-
 #ifdef LIN_ADVANCE
 
   static uint16_t nextMainISR = 0;
@@ -714,7 +712,6 @@ FORCE_INLINE void stepper_tick_lowres()
     counter_x.lo += current_block->steps_x.lo;
     if (counter_x.lo > 0) {
       WRITE_NC(X_STEP_PIN, !INVERT_X_STEP_PIN);
-      LastStepMask |= X_AXIS_MASK;
 #ifdef DEBUG_XSTEP_DUP_PIN
       WRITE_NC(DEBUG_XSTEP_DUP_PIN,!INVERT_X_STEP_PIN);
 #endif //DEBUG_XSTEP_DUP_PIN
@@ -729,7 +726,6 @@ FORCE_INLINE void stepper_tick_lowres()
     counter_y.lo += current_block->steps_y.lo;
     if (counter_y.lo > 0) {
       WRITE_NC(Y_STEP_PIN, !INVERT_Y_STEP_PIN);
-      LastStepMask |= Y_AXIS_MASK;
 #ifdef DEBUG_YSTEP_DUP_PIN
       WRITE_NC(DEBUG_YSTEP_DUP_PIN,!INVERT_Y_STEP_PIN);
 #endif //DEBUG_YSTEP_DUP_PIN
@@ -744,7 +740,6 @@ FORCE_INLINE void stepper_tick_lowres()
     counter_z.lo += current_block->steps_z.lo;
     if (counter_z.lo > 0) {
       WRITE_NC(Z_STEP_PIN, !INVERT_Z_STEP_PIN);
-      LastStepMask |= Z_AXIS_MASK;
       counter_z.lo -= current_block->step_event_count.lo;
       count_position[Z_AXIS]+=count_direction[Z_AXIS];
       WRITE_NC(Z_STEP_PIN, INVERT_Z_STEP_PIN);
@@ -779,7 +774,6 @@ FORCE_INLINE void stepper_tick_highres()
     counter_x.wide += current_block->steps_x.wide;
     if (counter_x.wide > 0) {
       WRITE_NC(X_STEP_PIN, !INVERT_X_STEP_PIN);
-      LastStepMask |= X_AXIS_MASK;
 #ifdef DEBUG_XSTEP_DUP_PIN
       WRITE_NC(DEBUG_XSTEP_DUP_PIN,!INVERT_X_STEP_PIN);
 #endif //DEBUG_XSTEP_DUP_PIN
@@ -794,7 +788,6 @@ FORCE_INLINE void stepper_tick_highres()
     counter_y.wide += current_block->steps_y.wide;
     if (counter_y.wide > 0) {
       WRITE_NC(Y_STEP_PIN, !INVERT_Y_STEP_PIN);
-      LastStepMask |= Y_AXIS_MASK;
 #ifdef DEBUG_YSTEP_DUP_PIN
       WRITE_NC(DEBUG_YSTEP_DUP_PIN,!INVERT_Y_STEP_PIN);
 #endif //DEBUG_YSTEP_DUP_PIN
@@ -809,7 +802,6 @@ FORCE_INLINE void stepper_tick_highres()
     counter_z.wide += current_block->steps_z.wide;
     if (counter_z.wide > 0) {
       WRITE_NC(Z_STEP_PIN, !INVERT_Z_STEP_PIN);
-      LastStepMask |= Z_AXIS_MASK;
       counter_z.wide -= current_block->step_event_count.wide;
       count_position[Z_AXIS]+=count_direction[Z_AXIS];
       WRITE_NC(Z_STEP_PIN, INVERT_Z_STEP_PIN);
@@ -847,8 +839,6 @@ FORCE_INLINE void isr() {
   if (current_block == NULL)
     stepper_next_block();
 
-	LastStepMask = 0;
-
   if (current_block != NULL) 
   {
     stepper_check_endstops();
@@ -1066,7 +1056,7 @@ FORCE_INLINE void isr() {
   }
 
 #ifdef TMC2130
-	tmc2130_st_isr(LastStepMask);
+	tmc2130_st_isr();
 #endif //TMC2130
 
   //WRITE_NC(LOGIC_ANALYZER_CH0, false);
@@ -1421,7 +1411,6 @@ void babystep(const uint8_t axis,const bool direction)
     
     //perform step 
     WRITE(X_STEP_PIN, !INVERT_X_STEP_PIN); 
-	LastStepMask |= X_AXIS_MASK;
 #ifdef DEBUG_XSTEP_DUP_PIN
     WRITE(DEBUG_XSTEP_DUP_PIN,!INVERT_X_STEP_PIN);
 #endif //DEBUG_XSTEP_DUP_PIN
@@ -1445,7 +1434,6 @@ void babystep(const uint8_t axis,const bool direction)
     
     //perform step 
     WRITE(Y_STEP_PIN, !INVERT_Y_STEP_PIN); 
-	LastStepMask |= Y_AXIS_MASK;
 #ifdef DEBUG_YSTEP_DUP_PIN
     WRITE(DEBUG_YSTEP_DUP_PIN,!INVERT_Y_STEP_PIN);
 #endif //DEBUG_YSTEP_DUP_PIN
@@ -1472,7 +1460,6 @@ void babystep(const uint8_t axis,const bool direction)
     #endif
     //perform step 
     WRITE(Z_STEP_PIN, !INVERT_Z_STEP_PIN); 
-	LastStepMask |= Z_AXIS_MASK;
     #ifdef Z_DUAL_STEPPER_DRIVERS
       WRITE(Z2_STEP_PIN, !INVERT_Z_STEP_PIN);
     #endif
diff --git a/Firmware/tmc2130.cpp b/Firmware/tmc2130.cpp
index 27600e92..ddef5dd8 100644
--- a/Firmware/tmc2130.cpp
+++ b/Firmware/tmc2130.cpp
@@ -235,7 +235,7 @@ uint8_t tmc2130_sample_diag()
 
 extern bool is_usb_printing;
 
-void tmc2130_st_isr(uint8_t last_step_mask)
+void tmc2130_st_isr()
 {
 	if (tmc2130_mode == TMC2130_MODE_SILENT || tmc2130_sg_stop_on_crash == false) return;
 	uint8_t crash = 0;
diff --git a/Firmware/tmc2130.h b/Firmware/tmc2130.h
index 28ecb7be..66c2b92b 100644
--- a/Firmware/tmc2130.h
+++ b/Firmware/tmc2130.h
@@ -53,7 +53,7 @@ extern tmc2130_chopper_config_t tmc2130_chopper_config[4];
 //initialize tmc2130
 extern void tmc2130_init();
 //check diag pins (called from stepper isr)
-extern void tmc2130_st_isr(uint8_t last_step_mask);
+extern void tmc2130_st_isr();
 //update stall guard (called from st_synchronize inside the loop)
 extern bool tmc2130_update_sg();
 //temperature watching (called from )