diff --git a/Marlin/src/HAL/HAL_ESP32/Servo.cpp b/Marlin/src/HAL/HAL_ESP32/Servo.cpp
index c6be4b1280..3c3b8fa704 100644
--- a/Marlin/src/HAL/HAL_ESP32/Servo.cpp
+++ b/Marlin/src/HAL/HAL_ESP32/Servo.cpp
@@ -32,25 +32,25 @@
 int Servo::channel_next_free = 12;
 
 Servo::Servo() {
-  this->channel = channel_next_free++;
+  channel = channel_next_free++;
 }
 
-int8_t Servo::attach(const int pin) {
-  if (this->channel >= CHANNEL_MAX_NUM) return -1;
-  if (pin > 0) this->pin = pin;
+int8_t Servo::attach(const int inPin) {
+  if (channel >= CHANNEL_MAX_NUM) return -1;
+  if (pin > 0) pin = inPin;
 
-  ledcSetup(this->channel, 50, 16); // channel X, 50 Hz, 16-bit depth
-  ledcAttachPin(this->pin, this->channel);
+  ledcSetup(channel, 50, 16); // channel X, 50 Hz, 16-bit depth
+  ledcAttachPin(pin, channel);
   return true;
 }
 
-void Servo::detach() { ledcDetachPin(this->pin); }
+void Servo::detach() { ledcDetachPin(pin); }
 
-int Servo::read() { return this->degrees; }
+int Servo::read() { return degrees; }
 
 void Servo::write(int inDegrees) {
-  this->degrees = constrain(inDegrees, MIN_ANGLE, MAX_ANGLE);
-  int us = map(this->degrees, MIN_ANGLE, MAX_ANGLE, MIN_PULSE_WIDTH, MAX_PULSE_WIDTH);
+  degrees = constrain(inDegrees, MIN_ANGLE, MAX_ANGLE);
+  int us = map(degrees, MIN_ANGLE, MAX_ANGLE, MIN_PULSE_WIDTH, MAX_PULSE_WIDTH);
   int duty = map(us, 0, TAU_USEC, 0, MAX_COMPARE);
   ledcWrite(channel, duty);
 }
@@ -58,11 +58,11 @@ void Servo::write(int inDegrees) {
 void Servo::move(const int value) {
   constexpr uint16_t servo_delay[] = SERVO_DELAY;
   static_assert(COUNT(servo_delay) == NUM_SERVOS, "SERVO_DELAY must be an array NUM_SERVOS long.");
-  if (this->attach(0) >= 0) {
-    this->write(value);
-    safe_delay(servo_delay[this->channel]);
+  if (attach(0) >= 0) {
+    write(value);
+    safe_delay(servo_delay[channel]);
     #if ENABLED(DEACTIVATE_SERVOS_AFTER_MOVE)
-      this->detach();
+      detach();
     #endif
   }
 }
diff --git a/Marlin/src/HAL/HAL_LPC1768/Servo.h b/Marlin/src/HAL/HAL_LPC1768/Servo.h
index 8b511032cb..1bbf84c73e 100644
--- a/Marlin/src/HAL/HAL_LPC1768/Servo.h
+++ b/Marlin/src/HAL/HAL_LPC1768/Servo.h
@@ -57,11 +57,11 @@ class libServo: public Servo {
     constexpr uint16_t servo_delay[] = SERVO_DELAY;
     static_assert(COUNT(servo_delay) == NUM_SERVOS, "SERVO_DELAY must be an array NUM_SERVOS long.");
 
-    if (this->attach(servo_info[this->servoIndex].Pin.nbr) >= 0) {    // try to reattach
-      this->write(value);
-      safe_delay(servo_delay[this->servoIndex]); // delay to allow servo to reach position
+    if (attach(servo_info[servoIndex].Pin.nbr) >= 0) {    // try to reattach
+      write(value);
+      safe_delay(servo_delay[servoIndex]); // delay to allow servo to reach position
       #if ENABLED(DEACTIVATE_SERVOS_AFTER_MOVE)
-        this->detach();
+        detach();
       #endif
     }
 
diff --git a/Marlin/src/HAL/HAL_STM32/Servo.cpp b/Marlin/src/HAL/HAL_STM32/Servo.cpp
index 93154f7847..2882f071ac 100644
--- a/Marlin/src/HAL/HAL_STM32/Servo.cpp
+++ b/Marlin/src/HAL/HAL_STM32/Servo.cpp
@@ -31,24 +31,24 @@
 uint8_t servoPin[MAX_SERVOS] = { 0 };
 
 int8_t libServo::attach(const int pin) {
-  if (this->servoIndex >= MAX_SERVOS) return -1;
-  if (pin > 0) servoPin[this->servoIndex] = pin;
-  return Servo::attach(servoPin[this->servoIndex]);
+  if (servoIndex >= MAX_SERVOS) return -1;
+  if (pin > 0) servoPin[servoIndex] = pin;
+  return super::attach(servoPin[servoIndex]);
 }
 
 int8_t libServo::attach(const int pin, const int min, const int max) {
-  if (pin > 0) servoPin[this->servoIndex] = pin;
-  return Servo::attach(servoPin[this->servoIndex], min, max);
+  if (pin > 0) servoPin[servoIndex] = pin;
+  return super::attach(servoPin[servoIndex], min, max);
 }
 
 void libServo::move(const int value) {
   constexpr uint16_t servo_delay[] = SERVO_DELAY;
   static_assert(COUNT(servo_delay) == NUM_SERVOS, "SERVO_DELAY must be an array NUM_SERVOS long.");
-  if (this->attach(0) >= 0) {
-    this->write(value);
-    safe_delay(servo_delay[this->servoIndex]);
+  if (attach(0) >= 0) {
+    write(value);
+    safe_delay(servo_delay[servoIndex]);
     #if ENABLED(DEACTIVATE_SERVOS_AFTER_MOVE)
-      this->detach();
+      detach();
     #endif
   }
 }
diff --git a/Marlin/src/HAL/HAL_STM32F1/SPI.cpp b/Marlin/src/HAL/HAL_STM32F1/SPI.cpp
index bc10824c8b..101b42a53a 100644
--- a/Marlin/src/HAL/HAL_STM32F1/SPI.cpp
+++ b/Marlin/src/HAL/HAL_STM32F1/SPI.cpp
@@ -213,31 +213,31 @@ void SPIClass::setDataSize(uint32_t datasize) {
 }
 
 void SPIClass::setDataMode(uint8_t dataMode) {
-  /*
-  Notes:
-  As far as we know the AVR numbers for dataMode match the numbers required by the STM32.
-  From the AVR doc http://www.atmel.com/images/doc2585.pdf section 2.4
-
-  SPI Mode  CPOL  CPHA  Shift SCK-edge  Capture SCK-edge
-  0       0     0     Falling     Rising
-  1       0     1     Rising      Falling
-  2       1     0     Rising      Falling
-  3       1     1     Falling     Rising
-
-  On the STM32 it appears to be
-
-  bit 1 - CPOL : Clock polarity
-    (This bit should not be changed when communication is ongoing)
-    0 : CLK to 0 when idle
-    1 : CLK to 1 when idle
-
-  bit 0 - CPHA : Clock phase
-    (This bit should not be changed when communication is ongoing)
-    0 : The first clock transition is the first data capture edge
-    1 : The second clock transition is the first data capture edge
-
-  If someone finds this is not the case or sees a logic error with this let me know ;-)
-  */
+  /**
+   * Notes:
+   * As far as we know the AVR numbers for dataMode match the numbers required by the STM32.
+   * From the AVR doc http://www.atmel.com/images/doc2585.pdf section 2.4
+   *
+   * SPI Mode  CPOL  CPHA  Shift SCK-edge  Capture SCK-edge
+   * 0       0     0     Falling     Rising
+   * 1       0     1     Rising      Falling
+   * 2       1     0     Rising      Falling
+   * 3       1     1     Falling     Rising
+   *
+   * On the STM32 it appears to be
+   *
+   * bit 1 - CPOL : Clock polarity
+   *   (This bit should not be changed when communication is ongoing)
+   *   0 : CLK to 0 when idle
+   *   1 : CLK to 1 when idle
+   *
+   * bit 0 - CPHA : Clock phase
+   *   (This bit should not be changed when communication is ongoing)
+   *   0 : The first clock transition is the first data capture edge
+   *   1 : The second clock transition is the first data capture edge
+   *
+   * If someone finds this is not the case or sees a logic error with this let me know ;-)
+   */
   _currentSetting->dataMode = dataMode;
   uint32_t cr1 = _currentSetting->spi_d->regs->CR1 & ~(SPI_CR1_CPOL|SPI_CR1_CPHA);
   _currentSetting->spi_d->regs->CR1 = cr1 | (dataMode & (SPI_CR1_CPOL|SPI_CR1_CPHA));
@@ -593,7 +593,7 @@ void SPIClass::detachInterrupt() {
   // Should be disableInterrupt()
 }
 
-/*
+/**
  * Pin accessors
  */
 
@@ -613,25 +613,14 @@ uint8_t SPIClass::nssPin() {
   return dev_to_spi_pins(_currentSetting->spi_d)->nss;
 }
 
-/*
+/**
  * Deprecated functions
  */
+uint8_t SPIClass::send(uint8_t data)               { write(data); return 1; }
+uint8_t SPIClass::send(uint8_t *buf, uint32_t len) { write(buf, len); return len; }
+uint8_t SPIClass::recv()                           { return read(); }
 
-uint8_t SPIClass::send(uint8_t data) {
-  this->write(data);
-  return 1;
-}
-
-uint8_t SPIClass::send(uint8_t *buf, uint32_t len) {
-  this->write(buf, len);
-  return len;
-}
-
-uint8_t SPIClass::recv() {
-  return this->read();
-}
-
-/*
+/**
  * DMA call back functions, one per port.
  */
 #if BOARD_NR_SPI >= 1
@@ -650,7 +639,7 @@ uint8_t SPIClass::recv() {
   }
 #endif
 
-/*
+/**
  * Auxiliary functions
  */
 static const spi_pins* dev_to_spi_pins(spi_dev *dev) {
diff --git a/Marlin/src/HAL/HAL_STM32F1/SPI.h b/Marlin/src/HAL/HAL_STM32F1/SPI.h
index 20f22431f6..0162ac13bb 100644
--- a/Marlin/src/HAL/HAL_STM32F1/SPI.h
+++ b/Marlin/src/HAL/HAL_STM32F1/SPI.h
@@ -96,36 +96,36 @@ typedef enum {
 
 class SPISettings {
 public:
-  SPISettings(uint32_t clock, BitOrder bitOrder, uint8_t dataMode) {
-    if (__builtin_constant_p(clock))
-      init_AlwaysInline(clock, bitOrder, dataMode, DATA_SIZE_8BIT);
+  SPISettings(uint32_t inClock, BitOrder inBitOrder, uint8_t inDataMode) {
+    if (__builtin_constant_p(inClock))
+      init_AlwaysInline(inClock, inBitOrder, inDataMode, DATA_SIZE_8BIT);
     else
-      init_MightInline(clock, bitOrder, dataMode, DATA_SIZE_8BIT);
+      init_MightInline(inClock, inBitOrder, inDataMode, DATA_SIZE_8BIT);
   }
-  SPISettings(uint32_t clock, BitOrder bitOrder, uint8_t dataMode, uint32_t dataSize) {
-    if (__builtin_constant_p(clock))
-      init_AlwaysInline(clock, bitOrder, dataMode, dataSize);
+  SPISettings(uint32_t inClock, BitOrder inBitOrder, uint8_t inDataMode, uint32_t inDataSize) {
+    if (__builtin_constant_p(inClock))
+      init_AlwaysInline(inClock, inBitOrder, inDataMode, inDataSize);
     else
-      init_MightInline(clock, bitOrder, dataMode, dataSize);
+      init_MightInline(inClock, inBitOrder, inDataMode, inDataSize);
   }
-  SPISettings(uint32_t clock) {
-    if (__builtin_constant_p(clock))
-      init_AlwaysInline(clock, MSBFIRST, SPI_MODE0, DATA_SIZE_8BIT);
+  SPISettings(uint32_t inClock) {
+    if (__builtin_constant_p(inClock))
+      init_AlwaysInline(inClock, MSBFIRST, SPI_MODE0, DATA_SIZE_8BIT);
     else
-      init_MightInline(clock, MSBFIRST, SPI_MODE0, DATA_SIZE_8BIT);
+      init_MightInline(inClock, MSBFIRST, SPI_MODE0, DATA_SIZE_8BIT);
   }
   SPISettings() {
     init_AlwaysInline(4000000, MSBFIRST, SPI_MODE0, DATA_SIZE_8BIT);
   }
 private:
-  void init_MightInline(uint32_t clock, BitOrder bitOrder, uint8_t dataMode, uint32_t dataSize) {
-    init_AlwaysInline(clock, bitOrder, dataMode, dataSize);
+  void init_MightInline(uint32_t inClock, BitOrder inBitOrder, uint8_t inDataMode, uint32_t inDataSize) {
+    init_AlwaysInline(inClock, inBitOrder, inDataMode, inDataSize);
   }
-  void init_AlwaysInline(uint32_t clock, BitOrder bitOrder, uint8_t dataMode, uint32_t dataSize) __attribute__((__always_inline__)) {
-    this->clock = clock;
-    this->bitOrder = bitOrder;
-    this->dataMode = dataMode;
-    this->dataSize = dataSize;
+  void init_AlwaysInline(uint32_t inClock, BitOrder inBitOrder, uint8_t inDataMode, uint32_t inDataSize) __attribute__((__always_inline__)) {
+    clock    = inClock;
+    bitOrder = inBitOrder;
+    dataMode = inDataMode;
+    dataSize = inDataSize;
   }
   uint32_t clock;
   uint32_t dataSize;
@@ -339,7 +339,7 @@ public:
    *     or 1-3 in high density devices.
    */
   void setModule(int spi_num) {
-    _currentSetting=&_settings[spi_num-1];// SPI channels are called 1 2 and 3 but the array is zero indexed
+    _currentSetting = &_settings[spi_num - 1];// SPI channels are called 1 2 and 3 but the array is zero indexed
   }
 
   /* -- The following methods are deprecated --------------------------- */
diff --git a/Marlin/src/HAL/HAL_STM32F1/Servo.cpp b/Marlin/src/HAL/HAL_STM32F1/Servo.cpp
index 9db978637d..5dc2169154 100644
--- a/Marlin/src/HAL/HAL_STM32F1/Servo.cpp
+++ b/Marlin/src/HAL/HAL_STM32F1/Servo.cpp
@@ -56,52 +56,50 @@ uint8_t ServoCount = 0;
 #define SERVO_OVERFLOW  ((uint16_t)round((double)TAU_CYC / SERVO_PRESCALER))
 
 // Unit conversions
-#define US_TO_COMPARE(us) ((uint16_t)map((us), 0, TAU_USEC, 0, SERVO_OVERFLOW))
-#define COMPARE_TO_US(c)  ((uint32_t)map((c), 0, SERVO_OVERFLOW, 0, TAU_USEC))
-#define ANGLE_TO_US(a)    ((uint16_t)(map((a), this->minAngle, this->maxAngle, \
-                                        SERVO_DEFAULT_MIN_PW, SERVO_DEFAULT_MAX_PW)))
-#define US_TO_ANGLE(us)   ((int16_t)(map((us), SERVO_DEFAULT_MIN_PW, SERVO_DEFAULT_MAX_PW,  \
-                                       this->minAngle, this->maxAngle)))
+#define US_TO_COMPARE(us) uint16_t(map((us), 0, TAU_USEC, 0, SERVO_OVERFLOW))
+#define COMPARE_TO_US(c)  uint32_t(map((c),  0, SERVO_OVERFLOW, 0, TAU_USEC))
+#define ANGLE_TO_US(a)    uint16_t(map((a),  minAngle, maxAngle, SERVO_DEFAULT_MIN_PW, SERVO_DEFAULT_MAX_PW))
+#define US_TO_ANGLE(us)    int16_t(map((us), SERVO_DEFAULT_MIN_PW, SERVO_DEFAULT_MAX_PW, minAngle, maxAngle))
 
-void libServo::servoWrite(uint8_t pin, uint16_t duty_cycle) {
+void libServo::servoWrite(uint8_t inPin, uint16_t duty_cycle) {
   #ifdef SERVO0_TIMER_NUM
-    if (this->servoIndex == 0) {
-      this->pwmSetDuty(duty_cycle);
+    if (servoIndex == 0) {
+      pwmSetDuty(duty_cycle);
       return;
     }
   #endif
 
-  timer_dev *tdev = PIN_MAP[pin].timer_device;
-  uint8_t tchan = PIN_MAP[pin].timer_channel;
+  timer_dev *tdev = PIN_MAP[inPin].timer_device;
+  uint8_t tchan = PIN_MAP[inPin].timer_channel;
   if (tdev) timer_set_compare(tdev, tchan, duty_cycle);
 }
 
 libServo::libServo() {
-  this->servoIndex = ServoCount < MAX_SERVOS ? ServoCount++ : INVALID_SERVO;
+  servoIndex = ServoCount < MAX_SERVOS ? ServoCount++ : INVALID_SERVO;
 }
 
-bool libServo::attach(const int32_t pin, const int32_t minAngle, const int32_t maxAngle) {
-  if (this->servoIndex >= MAX_SERVOS) return false;
-  if (pin >= BOARD_NR_GPIO_PINS) return false;
+bool libServo::attach(const int32_t inPin, const int32_t inMinAngle, const int32_t inMaxAngle) {
+  if (servoIndex >= MAX_SERVOS) return false;
+  if (inPin >= BOARD_NR_GPIO_PINS) return false;
 
-  this->minAngle = minAngle;
-  this->maxAngle = maxAngle;
-  this->angle = -1;
+  minAngle = inMinAngle;
+  maxAngle = inMaxAngle;
+  angle = -1;
 
   #ifdef SERVO0_TIMER_NUM
-    if (this->servoIndex == 0 && this->setupSoftPWM(pin)) {
-      this->pin = pin; // set attached()
+    if (servoIndex == 0 && setupSoftPWM(inPin)) {
+      pin = inPin; // set attached()
       return true;
     }
   #endif
 
-  if (!PWM_PIN(pin)) return false;
+  if (!PWM_PIN(inPin)) return false;
 
-  timer_dev *tdev = PIN_MAP[pin].timer_device;
-  //uint8_t tchan = PIN_MAP[pin].timer_channel;
+  timer_dev *tdev = PIN_MAP[inPin].timer_device;
+  //uint8_t tchan = PIN_MAP[inPin].timer_channel;
 
-  SET_PWM(pin);
-  servoWrite(pin, 0);
+  SET_PWM(inPin);
+  servoWrite(inPin, 0);
 
   timer_pause(tdev);
   timer_set_prescaler(tdev, SERVO_PRESCALER - 1); // prescaler is 1-based
@@ -109,25 +107,24 @@ bool libServo::attach(const int32_t pin, const int32_t minAngle, const int32_t m
   timer_generate_update(tdev);
   timer_resume(tdev);
 
-  this->pin = pin; // set attached()
-
+  pin = inPin; // set attached()
   return true;
 }
 
 bool libServo::detach() {
-  if (!this->attached()) return false;
-  this->angle = -1;
-  servoWrite(this->pin, 0);
+  if (!attached()) return false;
+  angle = -1;
+  servoWrite(pin, 0);
   return true;
 }
 
 int32_t libServo::read() const {
-  if (this->attached()) {
+  if (attached()) {
     #ifdef SERVO0_TIMER_NUM
-      if (this->servoIndex == 0) return this->angle;
+      if (servoIndex == 0) return angle;
     #endif
-    timer_dev *tdev = PIN_MAP[this->pin].timer_device;
-    uint8_t tchan = PIN_MAP[this->pin].timer_channel;
+    timer_dev *tdev = PIN_MAP[pin].timer_device;
+    uint8_t tchan = PIN_MAP[pin].timer_channel;
     return US_TO_ANGLE(COMPARE_TO_US(timer_get_compare(tdev, tchan)));
   }
   return 0;
@@ -137,12 +134,12 @@ void libServo::move(const int32_t value) {
   constexpr uint16_t servo_delay[] = SERVO_DELAY;
   static_assert(COUNT(servo_delay) == NUM_SERVOS, "SERVO_DELAY must be an array NUM_SERVOS long.");
 
-  if (this->attached()) {
-    this->angle = constrain(value, this->minAngle, this->maxAngle);
-    servoWrite(this->pin, US_TO_COMPARE(ANGLE_TO_US(this->angle)));
-    safe_delay(servo_delay[this->servoIndex]);
+  if (attached()) {
+    angle = constrain(value, minAngle, maxAngle);
+    servoWrite(pin, US_TO_COMPARE(ANGLE_TO_US(angle)));
+    safe_delay(servo_delay[servoIndex]);
     #if ENABLED(DEACTIVATE_SERVOS_AFTER_MOVE)
-      this->detach();
+      detach();
     #endif
   }
 }
@@ -169,13 +166,13 @@ void libServo::move(const int32_t value) {
     }
   }
 
-  bool libServo::setupSoftPWM(const int32_t pin) {
+  bool libServo::setupSoftPWM(const int32_t inPin) {
     timer_dev *tdev = get_timer_dev(SERVO0_TIMER_NUM);
     if (!tdev) return false;
     #ifdef SERVO0_PWM_OD
-      OUT_WRITE_OD(pin, 1);
+      OUT_WRITE_OD(inPin, 1);
     #else
-      OUT_WRITE(pin, 0);
+      OUT_WRITE(inPin, 0);
     #endif
 
     timer_pause(tdev);
@@ -206,9 +203,9 @@ void libServo::move(const int32_t value) {
       timer_disable_irq(tdev, 1);
       timer_disable_irq(tdev, 2);
       #ifdef SERVO0_PWM_OD
-        OUT_WRITE_OD(this->pin, 1); // off
+        OUT_WRITE_OD(pin, 1); // off
       #else
-        OUT_WRITE(this->pin, 0);
+        OUT_WRITE(pin, 0);
       #endif
     }
   }
@@ -221,7 +218,7 @@ void libServo::move(const int32_t value) {
 
 #else
 
-  bool libServo::setupSoftPWM(const int32_t pin) { return false; }
+  bool libServo::setupSoftPWM(const int32_t inPin) { return false; }
   void libServo::pwmSetDuty(const uint16_t duty_cycle) {}
   void libServo::pauseSoftPWM() {}
 
diff --git a/Marlin/src/HAL/HAL_STM32F1/Servo.h b/Marlin/src/HAL/HAL_STM32F1/Servo.h
index f97ca7486b..92f4dd678d 100644
--- a/Marlin/src/HAL/HAL_STM32F1/Servo.h
+++ b/Marlin/src/HAL/HAL_STM32F1/Servo.h
@@ -41,7 +41,7 @@ class libServo {
   public:
     libServo();
     bool attach(const int32_t pin, const int32_t minAngle=SERVO_DEFAULT_MIN_ANGLE, const int32_t maxAngle=SERVO_DEFAULT_MAX_ANGLE);
-    bool attached() const { return this->pin != NOT_ATTACHED; }
+    bool attached() const { return pin != NOT_ATTACHED; }
     bool detach();
     void move(const int32_t value);
     int32_t read() const;
diff --git a/Marlin/src/HAL/HAL_STM32_F4_F7/Servo.cpp b/Marlin/src/HAL/HAL_STM32_F4_F7/Servo.cpp
index 736ddd45e4..b3aac77615 100644
--- a/Marlin/src/HAL/HAL_STM32_F4_F7/Servo.cpp
+++ b/Marlin/src/HAL/HAL_STM32_F4_F7/Servo.cpp
@@ -30,22 +30,22 @@
 #include "Servo.h"
 
 int8_t libServo::attach(const int pin) {
-  if (this->servoIndex >= MAX_SERVOS) return -1;
-  return Servo::attach(pin);
+  if (servoIndex >= MAX_SERVOS) return -1;
+  return super::attach(pin);
 }
 
 int8_t libServo::attach(const int pin, const int min, const int max) {
-  return Servo::attach(pin, min, max);
+  return super::attach(pin, min, max);
 }
 
 void libServo::move(const int value) {
   constexpr uint16_t servo_delay[] = SERVO_DELAY;
   static_assert(COUNT(servo_delay) == NUM_SERVOS, "SERVO_DELAY must be an array NUM_SERVOS long.");
-  if (this->attach(0) >= 0) {
-    this->write(value);
-    safe_delay(servo_delay[this->servoIndex]);
+  if (attach(0) >= 0) {
+    write(value);
+    safe_delay(servo_delay[servoIndex]);
     #if ENABLED(DEACTIVATE_SERVOS_AFTER_MOVE)
-      this->detach();
+      detach();
     #endif
   }
 }
diff --git a/Marlin/src/HAL/HAL_TEENSY31_32/Servo.cpp b/Marlin/src/HAL/HAL_TEENSY31_32/Servo.cpp
index 7af900b149..6451f6b172 100644
--- a/Marlin/src/HAL/HAL_TEENSY31_32/Servo.cpp
+++ b/Marlin/src/HAL/HAL_TEENSY31_32/Servo.cpp
@@ -29,25 +29,25 @@
 
 uint8_t servoPin[MAX_SERVOS] = { 0 };
 
-int8_t libServo::attach(const int pin) {
-  if (this->servoIndex >= MAX_SERVOS) return -1;
-  if (pin > 0) servoPin[this->servoIndex] = pin;
-  return Servo::attach(servoPin[this->servoIndex]);
+int8_t libServo::attach(const int inPin) {
+  if (servoIndex >= MAX_SERVOS) return -1;
+  if (inPin > 0) servoPin[servoIndex] = inPin;
+  return super::attach(servoPin[servoIndex]);
 }
 
-int8_t libServo::attach(const int pin, const int min, const int max) {
-  if (pin > 0) servoPin[this->servoIndex] = pin;
-  return Servo::attach(servoPin[this->servoIndex], min, max);
+int8_t libServo::attach(const int inPin, const int inMin, const int inMax) {
+  if (inPin > 0) servoPin[servoIndex] = inPin;
+  return super::attach(servoPin[servoIndex], inMin, inMax);
 }
 
 void libServo::move(const int value) {
   constexpr uint16_t servo_delay[] = SERVO_DELAY;
   static_assert(COUNT(servo_delay) == NUM_SERVOS, "SERVO_DELAY must be an array NUM_SERVOS long.");
-  if (this->attach(0) >= 0) {
-    this->write(value);
-    safe_delay(servo_delay[this->servoIndex]);
+  if (attach(0) >= 0) {
+    write(value);
+    safe_delay(servo_delay[servoIndex]);
     #if ENABLED(DEACTIVATE_SERVOS_AFTER_MOVE)
-      this->detach();
+      detach();
     #endif
   }
 }
diff --git a/Marlin/src/HAL/HAL_TEENSY35_36/Servo.cpp b/Marlin/src/HAL/HAL_TEENSY35_36/Servo.cpp
index faf72e9d1e..d376b80a7d 100644
--- a/Marlin/src/HAL/HAL_TEENSY35_36/Servo.cpp
+++ b/Marlin/src/HAL/HAL_TEENSY35_36/Servo.cpp
@@ -1,3 +1,24 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
 #if defined(__MK64FX512__) || defined(__MK66FX1M0__)
 
 #include "../../inc/MarlinConfig.h"
@@ -8,25 +29,25 @@
 
 uint8_t servoPin[MAX_SERVOS] = { 0 };
 
-int8_t libServo::attach(const int pin) {
-  if (this->servoIndex >= MAX_SERVOS) return -1;
-  if (pin > 0) servoPin[this->servoIndex] = pin;
-  return Servo::attach(servoPin[this->servoIndex]);
+int8_t libServo::attach(const int inPin) {
+  if (servoIndex >= MAX_SERVOS) return -1;
+  if (inPin > 0) servoPin[servoIndex] = inPin;
+  return super::attach(servoPin[servoIndex]);
 }
 
-int8_t libServo::attach(const int pin, const int min, const int max) {
-  if (pin > 0) servoPin[this->servoIndex] = pin;
-  return Servo::attach(servoPin[this->servoIndex], min, max);
+int8_t libServo::attach(const int inPin, const int inMin, const int inMax) {
+  if (inPin > 0) servoPin[servoIndex] = inPin;
+  return super::attach(servoPin[servoIndex], inMin, inMax);
 }
 
 void libServo::move(const int value) {
   constexpr uint16_t servo_delay[] = SERVO_DELAY;
   static_assert(COUNT(servo_delay) == NUM_SERVOS, "SERVO_DELAY must be an array NUM_SERVOS long.");
-  if (this->attach(0) >= 0) {
-    this->write(value);
-    safe_delay(servo_delay[this->servoIndex]);
+  if (attach(0) >= 0) {
+    write(value);
+    safe_delay(servo_delay[servoIndex]);
     #if ENABLED(DEACTIVATE_SERVOS_AFTER_MOVE)
-      this->detach();
+      detach();
     #endif
   }
 }
diff --git a/Marlin/src/HAL/shared/servo.cpp b/Marlin/src/HAL/shared/servo.cpp
index 22cf6bc88f..b5975e58e7 100644
--- a/Marlin/src/HAL/shared/servo.cpp
+++ b/Marlin/src/HAL/shared/servo.cpp
@@ -58,11 +58,11 @@
 #include "servo.h"
 #include "servo_private.h"
 
-ServoInfo_t servo_info[MAX_SERVOS];                  // static array of servo info structures
-uint8_t ServoCount = 0;                              // the total number of attached servos
+ServoInfo_t servo_info[MAX_SERVOS];             // static array of servo info structures
+uint8_t ServoCount = 0;                         // the total number of attached servos
 
-#define SERVO_MIN() (MIN_PULSE_WIDTH - this->min * 4)  // minimum value in uS for this servo
-#define SERVO_MAX() (MAX_PULSE_WIDTH - this->max * 4)  // maximum value in uS for this servo
+#define SERVO_MIN(v) (MIN_PULSE_WIDTH - (v) * 4) // minimum value in uS for this servo
+#define SERVO_MAX(v) (MAX_PULSE_WIDTH - (v) * 4) // maximum value in uS for this servo
 
 /************ static functions common to all instances ***********************/
 
@@ -79,54 +79,54 @@ static boolean isTimerActive(timer16_Sequence_t timer) {
 
 Servo::Servo() {
   if (ServoCount < MAX_SERVOS) {
-    this->servoIndex = ServoCount++;                    // assign a servo index to this instance
-    servo_info[this->servoIndex].ticks = usToTicks(DEFAULT_PULSE_WIDTH);   // store default values  - 12 Aug 2009
+    servoIndex = ServoCount++;                    // assign a servo index to this instance
+    servo_info[servoIndex].ticks = usToTicks(DEFAULT_PULSE_WIDTH);   // store default values  - 12 Aug 2009
   }
   else
-    this->servoIndex = INVALID_SERVO;  // too many servos
+    servoIndex = INVALID_SERVO;  // too many servos
 }
 
-int8_t Servo::attach(const int pin) {
-  return this->attach(pin, MIN_PULSE_WIDTH, MAX_PULSE_WIDTH);
+int8_t Servo::attach(const int inPin) {
+  return attach(inPin, MIN_PULSE_WIDTH, MAX_PULSE_WIDTH);
 }
 
-int8_t Servo::attach(const int pin, const int min, const int max) {
+int8_t Servo::attach(const int inPin, const int inMin, const int inMax) {
 
-  if (this->servoIndex >= MAX_SERVOS) return -1;
+  if (servoIndex >= MAX_SERVOS) return -1;
 
-  if (pin > 0) servo_info[this->servoIndex].Pin.nbr = pin;
-  pinMode(servo_info[this->servoIndex].Pin.nbr, OUTPUT); // set servo pin to output
+  if (inPin > 0) servo_info[servoIndex].Pin.nbr = inPin;
+  pinMode(servo_info[servoIndex].Pin.nbr, OUTPUT); // set servo pin to output
 
-  // todo min/max check: ABS(min - MIN_PULSE_WIDTH) /4 < 128
-  this->min = (MIN_PULSE_WIDTH - min) / 4; //resolution of min/max is 4 uS
-  this->max = (MAX_PULSE_WIDTH - max) / 4;
+  // TODO: min/max check: ABS(min - MIN_PULSE_WIDTH) / 4 < 128
+  min = (MIN_PULSE_WIDTH - inMin) / 4; //resolution of min/max is 4 uS
+  max = (MAX_PULSE_WIDTH - inMax) / 4;
 
   // initialize the timer if it has not already been initialized
   timer16_Sequence_t timer = SERVO_INDEX_TO_TIMER(servoIndex);
   if (!isTimerActive(timer)) initISR(timer);
-  servo_info[this->servoIndex].Pin.isActive = true;  // this must be set after the check for isTimerActive
+  servo_info[servoIndex].Pin.isActive = true;  // this must be set after the check for isTimerActive
 
-  return this->servoIndex;
+  return servoIndex;
 }
 
 void Servo::detach() {
-  servo_info[this->servoIndex].Pin.isActive = false;
+  servo_info[servoIndex].Pin.isActive = false;
   timer16_Sequence_t timer = SERVO_INDEX_TO_TIMER(servoIndex);
   if (!isTimerActive(timer)) finISR(timer);
 }
 
 void Servo::write(int value) {
   if (value < MIN_PULSE_WIDTH)    // treat values less than 544 as angles in degrees (valid values in microseconds are handled as microseconds)
-    value = map(constrain(value, 0, 180), 0, 180, SERVO_MIN(), SERVO_MAX());
-  this->writeMicroseconds(value);
+    value = map(constrain(value, 0, 180), 0, 180, SERVO_MIN(min), SERVO_MAX(max));
+  writeMicroseconds(value);
 }
 
 void Servo::writeMicroseconds(int value) {
   // calculate and store the values for the given channel
-  byte channel = this->servoIndex;
+  byte channel = servoIndex;
   if (channel < MAX_SERVOS) {  // ensure channel is valid
     // ensure pulse width is valid
-    value = constrain(value, SERVO_MIN(), SERVO_MAX()) - (TRIM_DURATION);
+    value = constrain(value, SERVO_MIN(min), SERVO_MAX(max)) - (TRIM_DURATION);
     value = usToTicks(value);  // convert to ticks after compensating for interrupt overhead - 12 Aug 2009
 
     CRITICAL_SECTION_START;
@@ -136,22 +136,22 @@ void Servo::writeMicroseconds(int value) {
 }
 
 // return the value as degrees
-int Servo::read() { return map(this->readMicroseconds() + 1, SERVO_MIN(), SERVO_MAX(), 0, 180); }
+int Servo::read() { return map(readMicroseconds() + 1, SERVO_MIN(min), SERVO_MAX(max), 0, 180); }
 
 int Servo::readMicroseconds() {
-  return (this->servoIndex == INVALID_SERVO) ? 0 : ticksToUs(servo_info[this->servoIndex].ticks) + (TRIM_DURATION);
+  return (servoIndex == INVALID_SERVO) ? 0 : ticksToUs(servo_info[servoIndex].ticks) + (TRIM_DURATION);
 }
 
-bool Servo::attached() { return servo_info[this->servoIndex].Pin.isActive; }
+bool Servo::attached() { return servo_info[servoIndex].Pin.isActive; }
 
 void Servo::move(const int value) {
   constexpr uint16_t servo_delay[] = SERVO_DELAY;
   static_assert(COUNT(servo_delay) == NUM_SERVOS, "SERVO_DELAY must be an array NUM_SERVOS long.");
-  if (this->attach(0) >= 0) {
-    this->write(value);
-    safe_delay(servo_delay[this->servoIndex]);
+  if (attach(0) >= 0) {
+    write(value);
+    safe_delay(servo_delay[servoIndex]);
     #if ENABLED(DEACTIVATE_SERVOS_AFTER_MOVE)
-      this->detach();
+      detach();
     #endif
   }
 }
diff --git a/Marlin/src/feature/twibus.cpp b/Marlin/src/feature/twibus.cpp
index ccd778120d..f4fe512cdf 100644
--- a/Marlin/src/feature/twibus.cpp
+++ b/Marlin/src/feature/twibus.cpp
@@ -34,12 +34,12 @@ TWIBus::TWIBus() {
   #else
     Wire.begin(I2C_SLAVE_ADDRESS); // Join the bus as a slave
   #endif
-  this->reset();
+  reset();
 }
 
 void TWIBus::reset() {
-  this->buffer_s = 0;
-  this->buffer[0] = 0x00;
+  buffer_s = 0;
+  buffer[0] = 0x00;
 }
 
 void TWIBus::address(const uint8_t adr) {
@@ -47,7 +47,7 @@ void TWIBus::address(const uint8_t adr) {
     SERIAL_ECHO_MSG("Bad I2C address (8-127)");
   }
 
-  this->addr = adr;
+  addr = adr;
 
   #if ENABLED(DEBUG_TWIBUS)
     debug(PSTR("address"), adr);
@@ -55,8 +55,8 @@ void TWIBus::address(const uint8_t adr) {
 }
 
 void TWIBus::addbyte(const char c) {
-  if (this->buffer_s >= COUNT(this->buffer)) return;
-  this->buffer[this->buffer_s++] = c;
+  if (buffer_s >= COUNT(buffer)) return;
+  buffer[buffer_s++] = c;
   #if ENABLED(DEBUG_TWIBUS)
     debug(PSTR("addbyte"), c);
   #endif
@@ -66,26 +66,26 @@ void TWIBus::addbytes(char src[], uint8_t bytes) {
   #if ENABLED(DEBUG_TWIBUS)
     debug(PSTR("addbytes"), bytes);
   #endif
-  while (bytes--) this->addbyte(*src++);
+  while (bytes--) addbyte(*src++);
 }
 
 void TWIBus::addstring(char str[]) {
   #if ENABLED(DEBUG_TWIBUS)
     debug(PSTR("addstring"), str);
   #endif
-  while (char c = *str++) this->addbyte(c);
+  while (char c = *str++) addbyte(c);
 }
 
 void TWIBus::send() {
   #if ENABLED(DEBUG_TWIBUS)
-    debug(PSTR("send"), this->addr);
+    debug(PSTR("send"), addr);
   #endif
 
-  Wire.beginTransmission(I2C_ADDRESS(this->addr));
-  Wire.write(this->buffer, this->buffer_s);
+  Wire.beginTransmission(I2C_ADDRESS(addr));
+  Wire.write(buffer, buffer_s);
   Wire.endTransmission();
 
-  this->reset();
+  reset();
 }
 
 // static
@@ -103,22 +103,22 @@ void TWIBus::echodata(uint8_t bytes, const char prefix[], uint8_t adr) {
 }
 
 void TWIBus::echobuffer(const char prefix[], uint8_t adr) {
-  echoprefix(this->buffer_s, prefix, adr);
-  for (uint8_t i = 0; i < this->buffer_s; i++) SERIAL_CHAR(this->buffer[i]);
+  echoprefix(buffer_s, prefix, adr);
+  for (uint8_t i = 0; i < buffer_s; i++) SERIAL_CHAR(buffer[i]);
   SERIAL_EOL();
 }
 
 bool TWIBus::request(const uint8_t bytes) {
-  if (!this->addr) return false;
+  if (!addr) return false;
 
   #if ENABLED(DEBUG_TWIBUS)
     debug(PSTR("request"), bytes);
   #endif
 
   // requestFrom() is a blocking function
-  if (Wire.requestFrom(this->addr, bytes) == 0) {
+  if (Wire.requestFrom(addr, bytes) == 0) {
     #if ENABLED(DEBUG_TWIBUS)
-      debug("request fail", this->addr);
+      debug("request fail", addr);
     #endif
     return false;
   }
@@ -131,12 +131,12 @@ void TWIBus::relay(const uint8_t bytes) {
     debug(PSTR("relay"), bytes);
   #endif
 
-  if (this->request(bytes))
-    echodata(bytes, PSTR("i2c-reply"), this->addr);
+  if (request(bytes))
+    echodata(bytes, PSTR("i2c-reply"), addr);
 }
 
 uint8_t TWIBus::capture(char *dst, const uint8_t bytes) {
-  this->reset();
+  reset();
   uint8_t count = 0;
   while (count < bytes && Wire.available())
     dst[count++] = Wire.read();
@@ -168,13 +168,13 @@ void TWIBus::flush() {
     #endif
 
     if (str) {
-      this->reset();
-      this->addstring(str);
+      reset();
+      addstring(str);
     }
 
-    Wire.write(this->buffer, this->buffer_s);
+    Wire.write(buffer, buffer_s);
 
-    this->reset();
+    reset();
   }
 
 #endif
diff --git a/Marlin/src/feature/twibus.h b/Marlin/src/feature/twibus.h
index 1e2f14cfc0..cc40476374 100644
--- a/Marlin/src/feature/twibus.h
+++ b/Marlin/src/feature/twibus.h
@@ -218,7 +218,7 @@ class TWIBus {
        *          If a string is passed, write it into the buffer first.
        */
       void reply(char str[]=nullptr);
-      inline void reply(const char str[]) { this->reply((char*)str); }
+      inline void reply(const char str[]) { reply((char*)str); }
 
     #endif
 
diff --git a/Marlin/src/libs/circularqueue.h b/Marlin/src/libs/circularqueue.h
index 479e90daba..6b1923986d 100644
--- a/Marlin/src/libs/circularqueue.h
+++ b/Marlin/src/libs/circularqueue.h
@@ -52,8 +52,8 @@ class CircularQueue {
      *          items that can be stored on the queue.
      */
     CircularQueue<T, N>() {
-      this->buffer.size = N;
-      this->buffer.count = this->buffer.head = this->buffer.tail = 0;
+      buffer.size = N;
+      buffer.count = buffer.head = buffer.tail = 0;
     }
 
     /**
@@ -63,15 +63,15 @@ class CircularQueue {
      * @return  type T item
      */
     T dequeue() {
-      if (this->isEmpty()) return T();
+      if (isEmpty()) return T();
 
-      uint8_t index = this->buffer.head;
+      uint8_t index = buffer.head;
 
-      --this->buffer.count;
-      if (++this->buffer.head == this->buffer.size)
-        this->buffer.head = 0;
+      --buffer.count;
+      if (++buffer.head == buffer.size)
+        buffer.head = 0;
 
-      return this->buffer.queue[index];
+      return buffer.queue[index];
     }
 
     /**
@@ -82,13 +82,13 @@ class CircularQueue {
      * @return  true if the operation was successful
      */
     bool enqueue(T const &item) {
-      if (this->isFull()) return false;
+      if (isFull()) return false;
 
-      this->buffer.queue[this->buffer.tail] = item;
+      buffer.queue[buffer.tail] = item;
 
-      ++this->buffer.count;
-      if (++this->buffer.tail == this->buffer.size)
-        this->buffer.tail = 0;
+      ++buffer.count;
+      if (++buffer.tail == buffer.size)
+        buffer.tail = 0;
 
       return true;
     }
@@ -98,27 +98,21 @@ class CircularQueue {
      * @details Returns true if there are no items on the queue, false otherwise.
      * @return  true if queue is empty
      */
-    bool isEmpty() {
-      return this->buffer.count == 0;
-    }
+    bool isEmpty() { return buffer.count == 0; }
 
     /**
      * @brief   Checks if the queue is full
      * @details Returns true if the queue is full, false otherwise.
      * @return  true if queue is full
      */
-    bool isFull() {
-      return this->buffer.count == this->buffer.size;
-    }
+    bool isFull() { return buffer.count == buffer.size; }
 
     /**
      * @brief   Gets the queue size
      * @details Returns the maximum number of items a queue can have.
      * @return  the queue size
      */
-    uint8_t size() {
-      return this->buffer.size;
-    }
+    uint8_t size() { return buffer.size; }
 
     /**
      * @brief   Gets the next item from the queue without removing it
@@ -126,16 +120,12 @@ class CircularQueue {
      *          or updating the pointers.
      * @return  first item in the queue
      */
-    T peek() {
-      return this->buffer.queue[this->buffer.head];
-    }
+    T peek() { return buffer.queue[buffer.head]; }
 
     /**
      * @brief Gets the number of items on the queue
      * @details Returns the current number of items stored on the queue.
      * @return number of items in the queue
      */
-    uint8_t count() {
-      return this->buffer.count;
-    }
+    uint8_t count() { return buffer.count; }
 };