Clean up HALs / FastIO (#14082)

Marlin/src/HAL/HAL_AVR/fastio_AVR.h

 #define _SET_INPUT(IO)        CBI(DIO ## IO ## _DDR, DIO ## IO ## _PIN)
 #define _SET_OUTPUT(IO)       SBI(DIO ## IO ## _DDR, DIO ## IO ## _PIN)
 
-#define _IS_INPUT(IO)        !TEST(DIO ## IO ## _DDR, DIO ## IO ## _PIN)
+#define _IS_INPUT(IO)         !TEST(DIO ## IO ## _DDR, DIO ## IO ## _PIN)
 #define _IS_OUTPUT(IO)        TEST(DIO ## IO ## _DDR, DIO ## IO ## _PIN)
-#define _HAS_TIMER(IO)        bool(DIO ## IO ## _PWM)
 
 // digitalRead/Write wrappers
 #ifdef FASTIO_EXT_START
 
 #define IS_INPUT(IO)          _IS_INPUT(IO)
 #define IS_OUTPUT(IO)         _IS_OUTPUT(IO)
-#define HAS_TIMER(IO)         _HAS_TIMER(IO)
 
 #define OUT_WRITE(IO,V)       do{ SET_OUTPUT(IO); WRITE(IO,V); }while(0)
 
 #else
   #error "unknown CPU"
 #endif
-
-#define USEABLE_HARDWARE_PWM(P) (PWM_PIN(P) && !PWM_CHK(P))

Marlin/src/HAL/HAL_DUE/HAL.h

 #undef pgm_read_word
 #define pgm_read_word(addr) (*((uint16_t*)(addr)))
 
-#define RST_POWER_ON   1
-#define RST_EXTERNAL   2
-#define RST_BROWN_OUT  4
-#define RST_WATCHDOG   8
-#define RST_JTAG       16
-#define RST_SOFTWARE   32
-#define RST_BACKUP     64
-
 typedef int8_t pin_t;
 
 #define HAL_SERVO_LIB Servo
 
 void HAL_adc_start_conversion(const uint8_t adc_pin);
 uint16_t HAL_adc_get_result(void);
-uint16_t HAL_getAdcReading(uint8_t chan);
-void HAL_startAdcConversion(uint8_t chan);
-uint8_t HAL_pinToAdcChannel(int pin);
-uint16_t HAL_getAdcFreerun(uint8_t chan, bool wait_for_conversion = false);
-//uint16_t HAL_getAdcSuperSample(uint8_t chan);
-void HAL_enable_AdcFreerun(void);
-//void HAL_disable_AdcFreerun(uint8_t chan);
 
 //
 // Pin Map

Marlin/src/HAL/HAL_DUE/fastio_Due.h

 // Due has 12 PWMs assigned to logical pins 2-13.
 // 6, 7, 8 & 9 come from the PWM controller. The others come from the timers.
 #define PWM_PIN(P)              WITHIN(P, 2, 13)
-#define USEABLE_HARDWARE_PWM(P) PWM_PIN(P)
 
 #ifndef MASK
   #define MASK(PIN) (1 << PIN)
 #define IS_INPUT(IO)         ((digitalPinToPort(IO)->PIO_OSR & digitalPinToBitMask(IO)) == 0)
 // Check if pin is an output
 #define IS_OUTPUT(IO)        ((digitalPinToPort(IO)->PIO_OSR & digitalPinToBitMask(IO)) != 0)
-// Check if pin is a timer - Must be a constexpr
-#define HAS_TIMER(IO)         ((IO) >= 2 && (IO) <= 13)
 
 // Shorthand
 #define OUT_WRITE(IO,V)       { SET_OUTPUT(IO); WRITE(IO,V); }

Marlin/src/HAL/HAL_ESP32/fastio_ESP32.h

 
 // PWM outputs
 #define PWM_PIN(P)              (P < 34) // NOTE Pins >= 34 are input only on ESP32, so they can't be used for output.
-#define USEABLE_HARDWARE_PWM(P) (!IS_I2S_EXPANDER_PIN(P) && PWM_PIN(P))
 
 // Toggle pin value
 #define TOGGLE(IO)              WRITE(IO, !READ(IO))

Marlin/src/HAL/HAL_LINUX/fastio.h

 /// check if pin is an output
 #define _IS_OUTPUT(IO)        (LPC1768_PIN_PIN(IO) >= 0)
 
-// hg42: HAS_TIMER is used only to check if it's a PWM pin
-// hg42: we cannot use USEABLE_HARDWARE_PWM because it uses a function that cannot be used statically
-// hg42: instead use PWM bit from the #define
-
-/// check if pin is a timer
-#define _HAS_TIMER(IO)        true  // could be LPC1768_PIN_PWM(IO), but there
-// hg42: could be this:
-// #define _HAS_TIMER(IO)        LPC1768_PIN_PWM(IO)
-// but this is an incomplete check (12 pins are PWMable, but only 6 can be used at the same time)
-
 /// Read a pin wrapper
 #define READ(IO)             _READ(IO)
 
 /// check if pin is an output wrapper
 #define IS_OUTPUT(IO)        _IS_OUTPUT(IO)
 
-/// check if pin is a timer (wrapper)
-#define HAS_TIMER(IO)        _HAS_TIMER(IO)
-
 // Shorthand
 #define OUT_WRITE(IO,V)       do{ SET_OUTPUT(IO); WRITE(IO,V); }while(0)
 
 // digitalRead/Write wrappers
 #define extDigitalRead(IO)    digitalRead(IO)
 #define extDigitalWrite(IO,V) digitalWrite(IO,V)
-
-#define USEABLE_HARDWARE_PWM(P) PWM_PIN(P)

Marlin/src/HAL/HAL_LINUX/watchdog.h

  */
 #pragma once
 
-#define RST_POWER_ON   1
-#define RST_EXTERNAL   2
-#define RST_BROWN_OUT  4
-#define RST_WATCHDOG   8
-
 #define WDT_TIMEOUT   4000000 // 4 second timeout
 
 void watchdog_init(void);

Marlin/src/HAL/HAL_LPC1768/fastio.h

 
 #include "../shared/Marduino.h"
 
-#define PWM_PIN(P)              true // all pins are PWM capable
-#define USEABLE_HARDWARE_PWM(P) PWM_PIN(P)
+#define PWM_PIN(P)            true // all pins are PWM capable
 
 #define LPC_PIN(pin)          gpio_pin(pin)
 #define LPC_GPIO(port)        gpio_port(port)
 /// check if pin is an output
 #define _IS_OUTPUT(IO)        (gpio_get_dir(IO))
 
-/// check if pin is a timer
-/// all gpio pins are pwm capable, either interrupt or hardware pwm controlled
-#define _HAS_TIMER(IO)        true
-
 /// Read a pin wrapper
 #define READ(IO)              _READ(IO)
 
 /// check if pin is an output wrapper
 #define IS_OUTPUT(IO)         _IS_OUTPUT(IO)
 
-/// check if pin is a timer (wrapper)
-#define HAS_TIMER(IO)         _HAS_TIMER(IO)
-
 // Shorthand
 #define OUT_WRITE(IO,V)       do{ SET_OUTPUT(IO); WRITE(IO,V); }while(0)
 

Marlin/src/HAL/HAL_LPC1768/watchdog.h

  */
 #pragma once
 
-#define RST_POWER_ON   1
-#define RST_EXTERNAL   2
-#define RST_BROWN_OUT  4
-#define RST_WATCHDOG   8
-
 #define WDT_TIMEOUT   4000000 // 4 second timeout
 
 void watchdog_init(void);

Marlin/src/HAL/HAL_STM32/HAL.h

 #undef pgm_read_ptr
 #define pgm_read_ptr(addr) (*(addr))
 
-#define RST_POWER_ON   1
-#define RST_EXTERNAL   2
-#define RST_BROWN_OUT  4
-#define RST_WATCHDOG   8
-#define RST_JTAG       16
-#define RST_SOFTWARE   32
-#define RST_BACKUP     64
-
 // --------------------------------------------------------------------------
 // Types
 // --------------------------------------------------------------------------

Marlin/src/HAL/HAL_STM32/fastio_STM32.h

 
 #define IS_INPUT(IO)
 #define IS_OUTPUT(IO)
-#define HAS_TIMER(IO)           digitalPinHasPWM(IO)
 
-#define PWM_PIN(P)              HAS_TIMER(P)
-#define USEABLE_HARDWARE_PWM(P) PWM_PIN(P)
+#define PWM_PIN(P)              digitalPinHasPWM(P)
 
 // digitalRead/Write wrappers
 #define extDigitalRead(IO)    digitalRead(IO)

Marlin/src/HAL/HAL_STM32F1/HAL.h

 #define HAL_ADC_READY()     true
 
 void HAL_adc_start_conversion(const uint8_t adc_pin);
-
 uint16_t HAL_adc_get_result(void);
 
-/* Todo: Confirm none of this is needed.
-uint16_t HAL_getAdcReading(uint8_t chan);
-
-void HAL_startAdcConversion(uint8_t chan);
-uint8_t HAL_pinToAdcChannel(int pin);
-
-uint16_t HAL_getAdcFreerun(uint8_t chan, bool wait_for_conversion = false);
-//uint16_t HAL_getAdcSuperSample(uint8_t chan);
-
-void HAL_enable_AdcFreerun(void);
-//void HAL_disable_AdcFreerun(uint8_t chan);
-
-*/
-
 #define GET_PIN_MAP_PIN(index) index
 #define GET_PIN_MAP_INDEX(pin) pin
 #define PARSED_PIN_INDEX(code, dval) parser.intval(code, dval)

Marlin/src/HAL/HAL_STM32F1/fastio_STM32F1.h

 
 #define IS_INPUT(IO)          (_GET_MODE(IO) == GPIO_INPUT_FLOATING || _GET_MODE(IO) == GPIO_INPUT_ANALOG || _GET_MODE(IO) == GPIO_INPUT_PU || _GET_MODE(IO) == GPIO_INPUT_PD)
 #define IS_OUTPUT(IO)         (_GET_MODE(IO) == GPIO_OUTPUT_PP)
-#define HAS_TIMER(IO)         (PIN_MAP[IO].timer_device != nullptr)
 
-#define PWM_PIN(P)              HAS_TIMER(P)
-#define USEABLE_HARDWARE_PWM(P) PWM_PIN(P)
+#define PWM_PIN(P)            (PIN_MAP[IO].timer_device != nullptr)
 
 // digitalRead/Write wrappers
 #define extDigitalRead(IO)    digitalRead(IO)

Marlin/src/HAL/HAL_STM32F4/HAL.h

 #undef pgm_read_ptr
 #define pgm_read_ptr(addr) (*(addr))
 
-#define RST_POWER_ON   1
-#define RST_EXTERNAL   2
-#define RST_BROWN_OUT  4
-#define RST_WATCHDOG   8
-#define RST_JTAG       16
-#define RST_SOFTWARE   32
-#define RST_BACKUP     64
-
 // --------------------------------------------------------------------------
 // Types
 // --------------------------------------------------------------------------
 #define HAL_ADC_READY()     true
 
 void HAL_adc_start_conversion(const uint8_t adc_pin);
-
 uint16_t HAL_adc_get_result(void);
 
-/* Todo: Confirm none of this is needed.
-uint16_t HAL_getAdcReading(uint8_t chan);
-
-void HAL_startAdcConversion(uint8_t chan);
-uint8_t HAL_pinToAdcChannel(int pin);
-
-uint16_t HAL_getAdcFreerun(uint8_t chan, bool wait_for_conversion = false);
-//uint16_t HAL_getAdcSuperSample(uint8_t chan);
-
-void HAL_enable_AdcFreerun(void);
-//void HAL_disable_AdcFreerun(uint8_t chan);
-
-*/
-
 #define GET_PIN_MAP_PIN(index) index
 #define GET_PIN_MAP_INDEX(pin) pin
 #define PARSED_PIN_INDEX(code, dval) parser.intval(code, dval)

Marlin/src/HAL/HAL_STM32F4/fastio_STM32F4.h

 
 #define IS_INPUT(IO)
 #define IS_OUTPUT(IO)
-#define HAS_TIMER(IO)           true
 
-#define PWM_PIN(P)              HAS_TIMER(P)
-#define USEABLE_HARDWARE_PWM(P) PWM_PIN(P)
+#define PWM_PIN(P)              true
 
 // digitalRead/Write wrappers
 #define extDigitalRead(IO)    digitalRead(IO)

Marlin/src/HAL/HAL_STM32F7/HAL.h

 #undef pgm_read_ptr
 #define pgm_read_ptr(addr) (*(addr))
 
-#define RST_POWER_ON   1
-#define RST_EXTERNAL   2
-#define RST_BROWN_OUT  4
-#define RST_WATCHDOG   8
-#define RST_JTAG       16
-#define RST_SOFTWARE   32
-#define RST_BACKUP     64
-
 // --------------------------------------------------------------------------
 // Types
 // --------------------------------------------------------------------------
 #define HAL_ADC_READY()     true
 
 void HAL_adc_start_conversion(const uint8_t adc_pin);
-
 uint16_t HAL_adc_get_result(void);
 
-/* Todo: Confirm none of this is needed.
-uint16_t HAL_getAdcReading(uint8_t chan);
-
-void HAL_startAdcConversion(uint8_t chan);
-uint8_t HAL_pinToAdcChannel(int pin);
-
-uint16_t HAL_getAdcFreerun(uint8_t chan, bool wait_for_conversion = false);
-//uint16_t HAL_getAdcSuperSample(uint8_t chan);
-
-void HAL_enable_AdcFreerun(void);
-//void HAL_disable_AdcFreerun(uint8_t chan);
-
-*/
-
 #define GET_PIN_MAP_PIN(index) index
 #define GET_PIN_MAP_INDEX(pin) pin
 #define PARSED_PIN_INDEX(code, dval) parser.intval(code, dval)

Marlin/src/HAL/HAL_STM32F7/fastio_STM32F7.h

 
 #define IS_INPUT(IO)
 #define IS_OUTPUT(IO)
-#define HAS_TIMER(IO)           true
 
-#define PWM_PIN(P)              HAS_TIMER(P)
-#define USEABLE_HARDWARE_PWM(P) PWM_PIN(P)
+#define PWM_PIN(P)              true
 
 // digitalRead/Write wrappers
 #define extDigitalRead(IO)    digitalRead(IO)

Marlin/src/HAL/HAL_TEENSY31_32/HAL.h

 #undef pgm_read_word
 #define pgm_read_word(addr) (*((uint16_t*)(addr)))
 
-#define RST_POWER_ON   1
-#define RST_EXTERNAL   2
-#define RST_BROWN_OUT  4
-#define RST_WATCHDOG   8
-#define RST_JTAG       16
-#define RST_SOFTWARE   32
-#define RST_BACKUP     64
-
 // Clear the reset reason
 void HAL_clear_reset_source(void);
 
 #define HAL_READ_ADC()      HAL_adc_get_result()
 #define HAL_ADC_READY()     true
 
-#define HAL_ANALOG_SELECT(pin) NOOP;
+#define HAL_ANALOG_SELECT(pin)
 
 void HAL_adc_start_conversion(const uint8_t adc_pin);
-
 uint16_t HAL_adc_get_result(void);
 
-/*
-uint16_t HAL_getAdcReading(uint8_t chan);
-
-void HAL_startAdcConversion(uint8_t chan);
-uint8_t HAL_pinToAdcChannel(int pin);
-
-uint16_t HAL_getAdcFreerun(uint8_t chan, bool wait_for_conversion = false);
-//uint16_t HAL_getAdcSuperSample(uint8_t chan);
-
-void HAL_enable_AdcFreerun(void);
-//void HAL_disable_AdcFreerun(uint8_t chan);
-*/
-
 #define GET_PIN_MAP_PIN(index) index
 #define GET_PIN_MAP_INDEX(pin) pin
 #define PARSED_PIN_INDEX(code, dval) parser.intval(code, dval)

Marlin/src/HAL/HAL_TEENSY31_32/fastio_Teensy.h

 #define extDigitalWrite(IO,V) digitalWrite(IO,V)
 
 #define PWM_PIN(P)            digitalPinHasPWM(P)
-#define USEABLE_HARDWARE_PWM(P) PWM_PIN(P)
 
 /**
  * Ports, functions, and pins

Marlin/src/HAL/HAL_TEENSY35_36/HAL.h

 #undef pgm_read_word
 #define pgm_read_word(addr) (*((uint16_t*)(addr)))
 
-#define RST_POWER_ON   1
-#define RST_EXTERNAL   2
-#define RST_BROWN_OUT  4
-#define RST_WATCHDOG   8
-#define RST_JTAG       16
-#define RST_SOFTWARE   32
-#define RST_BACKUP     64
-
 /** clear reset reason */
 void HAL_clear_reset_source(void);
 
 #define HAL_READ_ADC()      HAL_adc_get_result()
 #define HAL_ADC_READY()     true
 
-#define HAL_ANALOG_SELECT(pin) NOOP;
+#define HAL_ANALOG_SELECT(pin)
 
 void HAL_adc_start_conversion(const uint8_t adc_pin);
-
 uint16_t HAL_adc_get_result(void);
 
-/*
-  uint16_t HAL_getAdcReading(uint8_t chan);
-
-  void HAL_startAdcConversion(uint8_t chan);
-  uint8_t HAL_pinToAdcChannel(int pin);
-
-  uint16_t HAL_getAdcFreerun(uint8_t chan, bool wait_for_conversion = false);
-  //uint16_t HAL_getAdcSuperSample(uint8_t chan);
-
-  void HAL_enable_AdcFreerun(void);
-  //void HAL_disable_AdcFreerun(uint8_t chan);
-*/
-
 #define GET_PIN_MAP_PIN(index) index
 #define GET_PIN_MAP_INDEX(pin) pin
 #define PARSED_PIN_INDEX(code, dval) parser.intval(code, dval)

Marlin/src/HAL/HAL_TEENSY35_36/fastio_Teensy.h

 #define extDigitalWrite(IO,V) digitalWrite(IO,V)
 
 #define PWM_PIN(P)            digitalPinHasPWM(P)
-#define USEABLE_HARDWARE_PWM(P) PWM_PIN(P)
 
 /**
  * Ports, functions, and pins

Marlin/src/HAL/shared/Marduino.h

     //#define strchr_P(s,c) strchr(s,c)
   #endif
 #endif
+
+// Restart causes
+#define RST_POWER_ON    1
+#define RST_EXTERNAL    2
+#define RST_BROWN_OUT   4
+#define RST_WATCHDOG    8
+#define RST_JTAG       16
+#define RST_SOFTWARE   32
+#define RST_BACKUP     64