Clean up fastIO ahead of PWM patch

Marlin/src/HAL/HAL_AVR/fastio_AVR.h

@@ -273,16 +273,15 @@ enum ClockSource2 : char {
 #define SET_FOCB(T,V) SET_FOC(T,B,V)
 #define SET_FOCC(T,V) SET_FOC(T,C,V)
 
-
 /**
  * PWM availability macros
  */
 
 // Determine which harware PWMs are already in use
 #if PIN_EXISTS(CONTROLLER_FAN)
-  #define PWM_CHK_FAN_B(p) (p == CONTROLLER_FAN_PIN || p == E0_AUTO_FAN_PIN || p ==  E1_AUTO_FAN_PIN || p ==  E2_AUTO_FAN_PIN || p ==  E3_AUTO_FAN_PIN || p ==  E4_AUTO_FAN_PIN || p == CHAMBER_AUTO_FAN_PIN)
+  #define PWM_CHK_FAN_B(p) (p == CONTROLLER_FAN_PIN || p == E0_AUTO_FAN_PIN || p == E1_AUTO_FAN_PIN || p == E2_AUTO_FAN_PIN || p == E3_AUTO_FAN_PIN || p == E4_AUTO_FAN_PIN || p == E5_AUTO_FAN_PIN || p == CHAMBER_AUTO_FAN_PIN)
 #else
-  #define PWM_CHK_FAN_B(p) (p == E0_AUTO_FAN_PIN || p ==  E1_AUTO_FAN_PIN || p ==  E2_AUTO_FAN_PIN || p ==  E3_AUTO_FAN_PIN || p ==  E4_AUTO_FAN_PIN || p == CHAMBER_AUTO_FAN_PIN)
+  #define PWM_CHK_FAN_B(p) (p == E0_AUTO_FAN_PIN || p == E1_AUTO_FAN_PIN || p == E2_AUTO_FAN_PIN || p == E3_AUTO_FAN_PIN || p == E4_AUTO_FAN_PIN || p == E5_AUTO_FAN_PIN || p == CHAMBER_AUTO_FAN_PIN)
 #endif
 
 #if PIN_EXISTS(FAN) || PIN_EXISTS(FAN1) || PIN_EXISTS(FAN2)
@@ -335,24 +334,22 @@ enum ClockSource2 : char {
     #define PWM_CHK_HEATER(p) false
 #endif
 
-#define PWM_CHK(p) (PWM_CHK_HEATER(p) || PWM_CHK_SERVO(p)  || PWM_CHK_MOTOR_CURRENT(p)\
-                     || PWM_CHK_FAN_A(p) || PWM_CHK_FAN_B(p))
+#define PWM_CHK(p) (PWM_CHK_HEATER(p) || PWM_CHK_SERVO(p) || PWM_CHK_MOTOR_CURRENT(p) || PWM_CHK_FAN_A(p) || PWM_CHK_FAN_B(p))
 
 // define which hardware PWMs are available for the current CPU
 // all timer 1 PWMS deleted from this list because they are never available
 #if AVR_ATmega2560_FAMILY
-  #define PWM_PINS(p)  ((p >= 2 && p <= 10) || p == 13 || p == 44 || p == 45 || p == 46)
+  #define PWM_PIN(p)  ((p >= 2 && p <= 10) || p == 13 || p == 44 || p == 45 || p == 46)
 #elif AVR_ATmega2561_FAMILY
-  #define PWM_PINS(p)  ((p >= 2 && p <= 6) || p == 9)
+  #define PWM_PIN(p)  ((p >= 2 && p <= 6) || p == 9)
 #elif AVR_ATmega1284_FAMILY
-  #define PWM_PINS(p)  (p == 3 || p == 4 || p == 14 || p == 15)
+  #define PWM_PIN(p)  (p == 3 || p == 4 || p == 14 || p == 15)
 #elif AVR_AT90USB1286_FAMILY
-  #define PWM_PINS(p)  (p == 0 || p == 1 || p == 14 || p == 15 || p == 16 || p == 24)
+  #define PWM_PIN(p)  (p == 0 || p == 1 || p == 14 || p == 15 || p == 16 || p == 24)
 #elif AVR_ATmega328_FAMILY
-  #define PWM_PINS(p)  (p == 3 || p == 5 || p == 6 || p == 11)
+  #define PWM_PIN(p)  (p == 3 || p == 5 || p == 6 || p == 11)
 #else
   #error "unknown CPU"
 #endif
 
-// finally - the macro that tells us if a pin is an available hardware PWM
-#define USEABLE_HARDWARE_PWM(p) (PWM_PINS(p) && !PWM_CHK(p))
+#define USEABLE_HARDWARE_PWM(P) (PWM_PIN(P) && !PWM_CHK(p))

Marlin/src/HAL/HAL_DUE/fastio_Due.h

@@ -174,9 +174,9 @@
 #define SET_OUTPUT(IO)       _SET_OUTPUT(IO)
 
 // Check if pin is an input
-#define GET_INPUT(IO) !(digitalPinToPort(IO)->PIO_OSR & digitalPinToBitMask(IO))
+#define GET_INPUT(IO)        ((digitalPinToPort(IO)->PIO_OSR & digitalPinToBitMask(IO)) == 0)
 // Check if pin is an output
-#define GET_OUTPUT(IO) !!(digitalPinToPort(IO)->PIO_OSR & digitalPinToBitMask(IO))
+#define GET_OUTPUT(IO)       ((digitalPinToPort(IO)->PIO_OSR & digitalPinToBitMask(IO)) != 0)
 // Check if pin is a timer - Must be a constexpr
 #define GET_TIMER(IO)         ((IO) >= 2 && (IO) <= 13)
 

Marlin/src/HAL/HAL_LINUX/fastio.h

@@ -87,7 +87,7 @@
 // hg42: instead use PWM bit from the #define
 
 /// check if pin is a timer
-#define _GET_TIMER(IO)    TRUE  // could be LPC1768_PIN_PWM(IO), but there
+#define _GET_TIMER(IO)        true  // could be LPC1768_PIN_PWM(IO), but there
 // hg42: could be this:
 // #define _GET_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)

Marlin/src/HAL/HAL_LPC1768/fastio.h

@@ -35,7 +35,8 @@
 
 #include <Arduino.h>
 
-#define USEABLE_HARDWARE_PWM(pin) TRUE // all pins are PWM capable
+#define PWM_PIN(P)              true // all pins are PWM capable
+#define USEABLE_HARDWARE_PWM(P) PWM_PIN(P)
 
 #define LPC_PIN(pin)          gpio_pin(pin)
 #define LPC_GPIO(port)        gpio_port(port)
@@ -90,7 +91,7 @@
 
 /// check if pin is a timer
 /// all gpio pins are pwm capable, either interrupt or hardware pwm controlled
-#define _GET_TIMER(IO)    TRUE
+#define _GET_TIMER(IO)        true
 
 /// Read a pin wrapper
 #define READ(IO)              _READ(IO)

Marlin/src/HAL/HAL_STM32F1/HAL.cpp

@@ -207,7 +207,6 @@ static void NVIC_SetPriorityGrouping(uint32_t PriorityGroup) {
   } }
 #endif
 
-
 void HAL_init(void) {
   NVIC_SetPriorityGrouping(0x3);
 }

Marlin/src/inc/SanityCheck.h

@@ -2014,7 +2014,7 @@ static_assert(   _ARR_TEST(3,0) && _ARR_TEST(3,1) && _ARR_TEST(3,2)
 #endif
 
 #if ENABLED(FAST_PWM_FAN) && !(defined(ARDUINO) && !defined(ARDUINO_ARCH_SAM))
-  #error "FAST_PWM_FAN only supported by 8 bit CPUs."
+  #error "FAST_PWM_FAN is only supported for ARDUINO and ARDUINO_ARCH_SAM."
 #endif
 
 #if ENABLED(Z_STEPPER_AUTO_ALIGN)