🎨 Cosmetic and comments

Author: thinkyhead

Marlin/src/HAL/AVR/HAL.h

@@ -1,7 +1,9 @@
 /**
  * Marlin 3D Printer Firmware
  * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- * Copyright (c) 2016 Bob Cousins [email protected]
+ *
+ * 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

Marlin/src/HAL/AVR/HAL_SPI.cpp

@@ -119,7 +119,6 @@ void spiBegin() {
     while (!TEST(SPSR, SPIF)) { /* Intentionally left empty */ }
   }
 
-
   /** begin spi transaction */
   void spiBeginTransaction(uint32_t spiClock, uint8_t bitOrder, uint8_t dataMode) {
     // Based on Arduino SPI library
@@ -175,7 +174,6 @@ void spiBegin() {
     SPSR = clockDiv | 0x01;
   }
 
-
 #else // SOFTWARE_SPI || FORCE_SOFT_SPI
 
   // ------------------------

Marlin/src/HAL/AVR/Servo.cpp

@@ -63,7 +63,6 @@
 
 static volatile int8_t Channel[_Nbr_16timers];              // counter for the servo being pulsed for each timer (or -1 if refresh interval)
 
-
 /************ static functions common to all instances ***********************/
 
 static inline void handle_interrupts(const timer16_Sequence_t timer, volatile uint16_t* TCNTn, volatile uint16_t* OCRnA) {

Marlin/src/HAL/AVR/endstop_interrupts.h

@@ -91,7 +91,6 @@ void endstop_ISR() { endstops.update(); }
 
 #endif
 
-
 // Install Pin change interrupt for a pin. Can be called multiple times.
 void pciSetup(const int8_t pin) {
   if (digitalPinHasPCICR(pin)) {

Marlin/src/HAL/AVR/fastio/fastio_AT90USB.h

@@ -682,7 +682,6 @@
 #define PF7_PWM     0
 #define PF7_DDR     DDRF
 
-
 /**
  * Some of the pin mapping functions of the Teensduino extension to the Arduino IDE
  * do not function the same as the other Arduino extensions.

Marlin/src/HAL/AVR/pinsDebug.h

@@ -90,7 +90,6 @@ void PRINT_ARRAY_NAME(uint8_t x) {
 
 #define GET_ARRAY_IS_DIGITAL(x)   pgm_read_byte(&pin_array[x].is_digital)
 
-
 #if defined(__AVR_ATmega1284P__)  // 1284 IDE extensions set this to the number of
   #undef NUM_DIGITAL_PINS         // digital only pins while all other CPUs have it
   #define NUM_DIGITAL_PINS 32     // set to digital only + digital/analog
@@ -164,7 +163,6 @@ static bool pwm_status(uint8_t pin) {
   SERIAL_ECHO_SP(2);
 } // pwm_status
 
-
 const volatile uint8_t* const PWM_other[][3] PROGMEM = {
     { &TCCR0A, &TCCR0B, &TIMSK0 },
     { &TCCR1A, &TCCR1B, &TIMSK1 },
@@ -182,7 +180,6 @@ const volatile uint8_t* const PWM_other[][3] PROGMEM = {
   #endif
 };
 
-
 const volatile uint8_t* const PWM_OCR[][3] PROGMEM = {
 
   #ifdef TIMER0A
@@ -218,7 +215,6 @@ const volatile uint8_t* const PWM_OCR[][3] PROGMEM = {
   #endif
 };
 
-
 #define TCCR_A(T)   pgm_read_word(&PWM_other[T][0])
 #define TCCR_B(T)   pgm_read_word(&PWM_other[T][1])
 #define TIMSK(T)    pgm_read_word(&PWM_other[T][2])

Marlin/src/HAL/AVR/pinsDebug_Teensyduino.h

@@ -22,11 +22,10 @@
 #pragma once
 
 //
-//  some of the pin mapping functions of the Teensduino extension to the Arduino IDE
-//  do not function the same as the other Arduino extensions
+// Some of the pin mapping functions of the Arduino IDE Teensduino extension
+// function differently from other Arduino extensions.
 //
 
-
 #define TEENSYDUINO_IDE
 
 //digitalPinToTimer(pin) function works like Arduino but Timers are not defined
@@ -48,8 +47,6 @@
 #define PE 5
 #define PF 6
 
-#undef digitalPinToPort
-
 const uint8_t PROGMEM digital_pin_to_port_PGM[] = {
   PD, // 0  - PD0 - INT0 - PWM
   PD, // 1  - PD1 - INT1 - PWM
@@ -101,7 +98,7 @@ const uint8_t PROGMEM digital_pin_to_port_PGM[] = {
   PE, // 47 - PE3 (not defined in teensyduino)
 };
 
-#define digitalPinToPort(P) ( pgm_read_byte( digital_pin_to_port_PGM + (P) ) )
+#define digitalPinToPort(P) pgm_read_byte(digital_pin_to_port_PGM[P])
 
 // digitalPinToBitMask(pin) is OK
 

Marlin/src/HAL/AVR/pinsDebug_plus_70.h

@@ -231,7 +231,6 @@ const uint8_t PROGMEM digital_pin_to_bit_mask_PGM_plus_70[] = {
 
 #define digitalPinToBitMask_plus_70(P) ( pgm_read_byte( digital_pin_to_bit_mask_PGM_plus_70 + (P) ) )
 
-
 const uint8_t PROGMEM digital_pin_to_timer_PGM_plus_70[] = {
   // TIMERS
   // ------------------------

Marlin/src/HAL/AVR/timers.h

@@ -1,7 +1,9 @@
 /**
  * Marlin 3D Printer Firmware
  * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- * Copyright (c) 2016 Bob Cousins [email protected]
+ *
+ * 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

Marlin/src/HAL/AVR/u8g_com_HAL_AVR_sw_spi.cpp

@@ -120,7 +120,6 @@ void u8g_spiSend_sw_AVR_mode_3(uint8_t val) {
   U8G_ATOMIC_END();
 }
 
-
 #if ENABLED(FYSETC_MINI_12864)
   #define SPISEND_SW_AVR u8g_spiSend_sw_AVR_mode_3
 #else