diff --git a/Marlin/G26_Mesh_Validation_Tool.cpp b/Marlin/G26_Mesh_Validation_Tool.cpp
index ffcad389f2..9b1d4b5ad1 100644
--- a/Marlin/G26_Mesh_Validation_Tool.cpp
+++ b/Marlin/G26_Mesh_Validation_Tool.cpp
@@ -134,14 +134,14 @@
     extern char lcd_status_message[];
   #endif
   extern float destination[XYZE];
-  void set_destination_to_current();
+  extern void set_destination_to_current() { COPY(destination, current_position); }
   void prepare_move_to_destination();
   #if AVR_AT90USB1286_FAMILY  // Teensyduino & Printrboard IDE extensions have compile errors without this
     inline void sync_plan_position_e() { planner.set_e_position_mm(current_position[E_AXIS]); }
     inline void set_current_to_destination() { COPY(current_position, destination); }
   #else
-    void sync_plan_position_e();
-    void set_current_to_destination();
+    extern void sync_plan_position_e() { planner.set_e_position_mm(current_position[E_AXIS]); }
+    extern void set_current_to_destination() { COPY(current_position, destination); }
   #endif
   #if ENABLED(NEWPANEL)
     void lcd_setstatusPGM(const char* const message, const int8_t level);
diff --git a/Marlin/src/HAL/HAL_LPC1768/arduino.cpp b/Marlin/src/HAL/HAL_LPC1768/arduino.cpp
index d24482b751..6a13448343 100644
--- a/Marlin/src/HAL/HAL_LPC1768/arduino.cpp
+++ b/Marlin/src/HAL/HAL_LPC1768/arduino.cpp
@@ -140,17 +140,27 @@ bool digitalRead(int pin) {
   return LPC_GPIO(pin_map[pin].port)->FIOPIN & LPC_PIN(pin_map[pin].pin) ? 1 : 0;
 }
 
-void analogWrite(int pin, int pin_status) { //todo: Hardware PWM
-  /*
-  if (pin == P2_4) {
-    LPC_PWM1->MR5 = pin_status; // set value
-    LPC_PWM1->LER = _BV(5); // set latch
+void analogWrite(int pin, int pwm_value) {
+/*
+  if (!WITHIN(pin, 0, NUM_DIGITAL_PINS - 1) || pin_map[pin].port == 0xFF)
+    return;
+
+  int old_pin = pin;
+  int old_value = pwm_value;
+
+  if(old_value != 0) {
+    for(uint16_t x = 0; x <= 5000; x++) {
+      LPC_GPIO(pin_map[pin].port)->FIOSET = LPC_PIN(pin_map[pin].pin);
+      //digitalWrite(old_pin, HIGH);
+      delayMicroseconds(old_value);
+      LPC_GPIO(pin_map[pin].port)->FIOCLR = LPC_PIN(pin_map[pin].pin);
+      //pinMode(pin, OUTPUT);
+      //digitalWrite(old_pin, LOW);
+      delayMicroseconds(255 - old_value);
+    }
   }
-  else if (pin == P2_5) {
-    LPC_PWM1->MR6 = pin_status;
-    LPC_PWM1->LER = _BV(6);
-  }
-  */
+*/
+
 }
 
 extern bool HAL_adc_finished();
@@ -175,7 +185,6 @@ void eeprom_read_block (void *__dst, const void *__src, size_t __n) { }
 
 void eeprom_update_block (const void *__src, void *__dst, size_t __n) { }
 
-/***/
 char *dtostrf (double __val, signed char __width, unsigned char __prec, char *__s) {
   char format_string[20];
   snprintf(format_string, 20, "%%%d.%df", __width, __prec);
@@ -195,4 +204,8 @@ void randomSeed(uint32_t value) {
   srand(value);
 }
 
+int map(uint16_t x, uint16_t in_min, uint16_t in_max, uint16_t out_min, uint16_t out_max) {
+  return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
+}
+
 #endif // TARGET_LPC1768
diff --git a/Marlin/src/HAL/HAL_LPC1768/arduino.h b/Marlin/src/HAL/HAL_LPC1768/arduino.h
index e5a749d99c..a8a67d5c77 100644
--- a/Marlin/src/HAL/HAL_LPC1768/arduino.h
+++ b/Marlin/src/HAL/HAL_LPC1768/arduino.h
@@ -112,4 +112,6 @@ void randomSeed(uint32_t);
 
 char *dtostrf (double __val, signed char __width, unsigned char __prec, char *__s);
 
+int map(uint16_t x, uint16_t in_min, uint16_t in_max, uint16_t out_min, uint16_t out_max);
+
 #endif // __ARDUINO_DEF_H__