Clean up fastIO ahead of PWM patch

Marlin/src/HAL/HAL_AVR/fastio_AVR.h

@@ -30,7 +30,7 @@
 #include <avr/io.h>
 #include "../../core/macros.h"
 
-#define AVR_AT90USB1286_FAMILY (defined(__AVR_AT90USB1287__) || defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB1286P__) || defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB646P__)  || defined(__AVR_AT90USB647__))
+#define AVR_AT90USB1286_FAMILY (defined(__AVR_AT90USB1287__) || defined(__AVR_AT90USB1286__) || defined(__AVR_AT90USB1286P__) || defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB646P__) || defined(__AVR_AT90USB647__))
 #define AVR_ATmega1284_FAMILY (defined(__AVR_ATmega644__) || defined(__AVR_ATmega644P__) || defined(__AVR_ATmega644PA__) || defined(__AVR_ATmega1284P__))
 #define AVR_ATmega2560_FAMILY (defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__))
 #define AVR_ATmega2561_FAMILY (defined(__AVR_ATmega1281__) || defined(__AVR_ATmega2561__))
@@ -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

@@ -154,34 +154,34 @@
 #endif
 
 // Set pin as input with pullup mode
-#define _PULLUP(IO,V) pinMode(IO, (V) ? INPUT_PULLUP : INPUT)
+#define _PULLUP(IO,V)        pinMode(IO, (V) ? INPUT_PULLUP : INPUT)
 
 // Read a pin (wrapper)
-#define READ(IO) _READ(IO)
+#define READ(IO)             _READ(IO)
 
 // Write to a pin (wrapper)
-#define WRITE_VAR(IO,V) _WRITE_VAR(IO,V)
-#define WRITE(IO,V) _WRITE(IO,V)
+#define WRITE_VAR(IO,V)      _WRITE_VAR(IO,V)
+#define WRITE(IO,V)          _WRITE(IO,V)
 
 // Toggle a pin (wrapper)
-#define TOGGLE(IO) _TOGGLE(IO)
+#define TOGGLE(IO)           _TOGGLE(IO)
 
 // Set pin as input (wrapper)
-#define SET_INPUT(IO) _SET_INPUT(IO)
+#define SET_INPUT(IO)        _SET_INPUT(IO)
 // Set pin as input with pullup (wrapper)
 #define SET_INPUT_PULLUP(IO) do{ _SET_INPUT(IO); _PULLUP(IO, HIGH); }while(0)
 // Set pin as output (wrapper) -  reads the pin and sets the output to that value
-#define SET_OUTPUT(IO) _SET_OUTPUT(IO)
+#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)
+#define GET_TIMER(IO)         ((IO) >= 2 && (IO) <= 13)
 
 // Shorthand
-#define OUT_WRITE(IO,V) { SET_OUTPUT(IO); WRITE(IO,V); }
+#define OUT_WRITE(IO,V)       { SET_OUTPUT(IO); WRITE(IO,V); }
 
 // digitalRead/Write wrappers
 #define extDigitalRead(IO)    digitalRead(IO)

Marlin/src/HAL/HAL_LINUX/fastio.h

@@ -30,16 +30,16 @@
 
 #define USEABLE_HARDWARE_PWM(pin) false
 
-#define SET_DIR_INPUT(IO)   Gpio::setDir(IO, 1)
-#define SET_DIR_OUTPUT(IO)  Gpio::setDir(IO, 0)
+#define SET_DIR_INPUT(IO)     Gpio::setDir(IO, 1)
+#define SET_DIR_OUTPUT(IO)    Gpio::setDir(IO, 0)
 
-#define SET_MODE(IO, mode)  Gpio::setMode(IO, mode)
+#define SET_MODE(IO, mode)    Gpio::setMode(IO, mode)
 
-#define WRITE_PIN_SET(IO)   Gpio::set(IO)
-#define WRITE_PIN_CLR(IO)   Gpio::clear(IO)
+#define WRITE_PIN_SET(IO)     Gpio::set(IO)
+#define WRITE_PIN_CLR(IO)     Gpio::clear(IO)
 
-#define READ_PIN(IO)        Gpio::get(IO)
-#define WRITE_PIN(IO,V)     Gpio::set(IO, V)
+#define READ_PIN(IO)          Gpio::get(IO)
+#define WRITE_PIN(IO,V)       Gpio::set(IO, V)
 
 /**
  * Magic I/O routines
@@ -50,77 +50,77 @@
  */
 
 /// Read a pin
-#define _READ(IO)         READ_PIN(IO)
+#define _READ(IO)             READ_PIN(IO)
 
 /// Write to a pin
-#define _WRITE_VAR(IO,V)  digitalWrite(IO,V)
+#define _WRITE_VAR(IO,V)      digitalWrite(IO,V)
 
-#define _WRITE(IO,V)      WRITE_PIN(IO,V)
+#define _WRITE(IO,V)          WRITE_PIN(IO,V)
 
 /// toggle a pin
-#define _TOGGLE(IO)       _WRITE(IO, !READ(IO))
+#define _TOGGLE(IO)          _WRITE(IO, !READ(IO))
 
 /// set pin as input
-#define _SET_INPUT(IO)    SET_DIR_INPUT(IO)
+#define _SET_INPUT(IO)        SET_DIR_INPUT(IO)
 
 /// set pin as output
-#define _SET_OUTPUT(IO)   SET_DIR_OUTPUT(IO)
+#define _SET_OUTPUT(IO)       SET_DIR_OUTPUT(IO)
 
 /// set pin as input with pullup mode
-#define _PULLUP(IO,V)     pinMode(IO, (V) ? INPUT_PULLUP : INPUT)
+#define _PULLUP(IO,V)         pinMode(IO, (V) ? INPUT_PULLUP : INPUT)
 
 /// set pin as input with pulldown mode
-#define _PULLDOWN(IO,V)   pinMode(IO, (V) ? INPUT_PULLDOWN : INPUT)
+#define _PULLDOWN(IO,V)       pinMode(IO, (V) ? INPUT_PULLDOWN : INPUT)
 
 // hg42: all pins can be input or output (I hope)
 // hg42: undefined pins create compile error (IO, is no pin)
 // hg42: currently not used, but was used by pinsDebug
 
 /// check if pin is an input
-#define _GET_INPUT(IO)    (LPC1768_PIN_PIN(IO) >= 0)
+#define _GET_INPUT(IO)        (LPC1768_PIN_PIN(IO) >= 0)
 
 /// check if pin is an output
-#define _GET_OUTPUT(IO)   (LPC1768_PIN_PIN(IO) >= 0)
+#define _GET_OUTPUT(IO)       (LPC1768_PIN_PIN(IO) >= 0)
 
 // hg42: GET_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 _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)
 
 /// Read a pin wrapper
-#define READ(IO)          _READ(IO)
+#define READ(IO)             _READ(IO)
 
 /// Write to a pin wrapper
-#define WRITE_VAR(IO,V)   _WRITE_VAR(IO,V)
-#define WRITE(IO,V)       _WRITE(IO,V)
+#define WRITE_VAR(IO,V)      _WRITE_VAR(IO,V)
+#define WRITE(IO,V)          _WRITE(IO,V)
 
 /// toggle a pin wrapper
-#define TOGGLE(IO)        _TOGGLE(IO)
+#define TOGGLE(IO)           _TOGGLE(IO)
 
 /// set pin as input wrapper
-#define SET_INPUT(IO)     _SET_INPUT(IO)
+#define SET_INPUT(IO)        _SET_INPUT(IO)
 /// set pin as input with pullup wrapper
-#define SET_INPUT_PULLUP(IO)    do{ _SET_INPUT(IO); _PULLUP(IO, HIGH); }while(0)
+#define SET_INPUT_PULLUP(IO)  do{ _SET_INPUT(IO); _PULLUP(IO, HIGH); }while(0)
 /// set pin as input with pulldown wrapper
-#define SET_INPUT_PULLDOWN(IO)  do{ _SET_INPUT(IO); _PULLDOWN(IO, HIGH); }while(0)
+#define SET_INPUT_PULLDOWN(IO) do{ _SET_INPUT(IO); _PULLDOWN(IO, HIGH); }while(0)
 /// set pin as output wrapper  -  reads the pin and sets the output to that value
-#define SET_OUTPUT(IO)          do{ _WRITE(IO, _READ(IO)); _SET_OUTPUT(IO); }while(0)
+#define SET_OUTPUT(IO)        do{ _WRITE(IO, _READ(IO)); _SET_OUTPUT(IO); }while(0)
 
 /// check if pin is an input wrapper
-#define GET_INPUT(IO)     _GET_INPUT(IO)
+#define GET_INPUT(IO)        _GET_INPUT(IO)
 /// check if pin is an output wrapper
-#define GET_OUTPUT(IO)    _GET_OUTPUT(IO)
+#define GET_OUTPUT(IO)       _GET_OUTPUT(IO)
 
 /// check if pin is a timer (wrapper)
-#define GET_TIMER(IO)     _GET_TIMER(IO)
+#define GET_TIMER(IO)        _GET_TIMER(IO)
 
 // Shorthand
-#define OUT_WRITE(IO,V)   do{ SET_OUTPUT(IO); WRITE(IO,V); }while(0)
+#define OUT_WRITE(IO,V)       do{ SET_OUTPUT(IO); WRITE(IO,V); }while(0)
 
 // digitalRead/Write wrappers
 #define extDigitalRead(IO)    digitalRead(IO)

Marlin/src/HAL/HAL_LPC1768/fastio.h

@@ -35,21 +35,22 @@
 
 #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)
+#define LPC_PIN(pin)          gpio_pin(pin)
+#define LPC_GPIO(port)        gpio_port(port)
 
-#define SET_DIR_INPUT(IO)       gpio_set_input(IO)
-#define SET_DIR_OUTPUT(IO)      gpio_set_output(IO)
+#define SET_DIR_INPUT(IO)     gpio_set_input(IO)
+#define SET_DIR_OUTPUT(IO)    gpio_set_output(IO)
 
-#define SET_MODE(IO, mode)      pinMode(IO, mode)
+#define SET_MODE(IO, mode)    pinMode(IO, mode)
 
-#define WRITE_PIN_SET(IO)       gpio_set(IO)
-#define WRITE_PIN_CLR(IO)       gpio_clear(IO)
+#define WRITE_PIN_SET(IO)     gpio_set(IO)
+#define WRITE_PIN_CLR(IO)     gpio_clear(IO)
 
-#define READ_PIN(IO)            gpio_get(IO)
-#define WRITE_PIN(IO,V)         gpio_set(IO, V)
+#define READ_PIN(IO)          gpio_get(IO)
+#define WRITE_PIN(IO,V)       gpio_set(IO, V)
 
 /**
  * Magic I/O routines
@@ -60,67 +61,67 @@
  */
 
 /// Read a pin
-#define _READ(IO)         READ_PIN(IO)
+#define _READ(IO)             READ_PIN(IO)
 
 /// Write to a pin
-#define _WRITE_VAR(IO,V)  digitalWrite(IO,V)
+#define _WRITE_VAR(IO,V)      digitalWrite(IO,V)
 
-#define _WRITE(IO,V)      WRITE_PIN(IO,V)
+#define _WRITE(IO,V)          WRITE_PIN(IO,V)
 
 /// toggle a pin
-#define _TOGGLE(IO)       _WRITE(IO, !READ(IO))
+#define _TOGGLE(IO)           _WRITE(IO, !READ(IO))
 
 /// set pin as input
-#define _SET_INPUT(IO)    SET_DIR_INPUT(IO)
+#define _SET_INPUT(IO)        SET_DIR_INPUT(IO)
 
 /// set pin as output
-#define _SET_OUTPUT(IO)   SET_DIR_OUTPUT(IO)
+#define _SET_OUTPUT(IO)       SET_DIR_OUTPUT(IO)
 
 /// set pin as input with pullup mode
-#define _PULLUP(IO,V)     pinMode(IO, (V) ? INPUT_PULLUP : INPUT)
+#define _PULLUP(IO,V)         pinMode(IO, (V) ? INPUT_PULLUP : INPUT)
 
 /// set pin as input with pulldown mode
-#define _PULLDOWN(IO,V)   pinMode(IO, (V) ? INPUT_PULLDOWN : INPUT)
+#define _PULLDOWN(IO,V)       pinMode(IO, (V) ? INPUT_PULLDOWN : INPUT)
 
 /// check if pin is an input
-#define _GET_INPUT(IO)    (!gpio_get_dir(IO))
+#define _GET_INPUT(IO)        (!gpio_get_dir(IO))
 
 /// check if pin is an output
-#define _GET_OUTPUT(IO)   (gpio_get_dir(IO))
+#define _GET_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 _GET_TIMER(IO)    TRUE
+#define _GET_TIMER(IO)        true
 
 /// Read a pin wrapper
-#define READ(IO)          _READ(IO)
+#define READ(IO)              _READ(IO)
 
 /// Write to a pin wrapper
-#define WRITE_VAR(IO,V)   _WRITE_VAR(IO,V)
-#define WRITE(IO,V)       _WRITE(IO,V)
+#define WRITE_VAR(IO,V)       _WRITE_VAR(IO,V)
+#define WRITE(IO,V)           _WRITE(IO,V)
 
 /// toggle a pin wrapper
-#define TOGGLE(IO)        _TOGGLE(IO)
+#define TOGGLE(IO)            _TOGGLE(IO)
 
 /// set pin as input wrapper
-#define SET_INPUT(IO)     _SET_INPUT(IO)
+#define SET_INPUT(IO)         _SET_INPUT(IO)
 /// set pin as input with pullup wrapper
-#define SET_INPUT_PULLUP(IO)    do{ _SET_INPUT(IO); _PULLUP(IO, HIGH); }while(0)
+#define SET_INPUT_PULLUP(IO)  do{ _SET_INPUT(IO); _PULLUP(IO, HIGH); }while(0)
 /// set pin as input with pulldown wrapper
-#define SET_INPUT_PULLDOWN(IO)  do{ _SET_INPUT(IO); _PULLDOWN(IO, HIGH); }while(0)
+#define SET_INPUT_PULLDOWN(IO) do{ _SET_INPUT(IO); _PULLDOWN(IO, HIGH); }while(0)
 /// set pin as output wrapper  -  reads the pin and sets the output to that value
-#define SET_OUTPUT(IO)          do{ _WRITE(IO, _READ(IO)); _SET_OUTPUT(IO); }while(0)
+#define SET_OUTPUT(IO)        do{ _WRITE(IO, _READ(IO)); _SET_OUTPUT(IO); }while(0)
 
 /// check if pin is an input wrapper
-#define GET_INPUT(IO)     _GET_INPUT(IO)
+#define GET_INPUT(IO)         _GET_INPUT(IO)
 /// check if pin is an output wrapper
-#define GET_OUTPUT(IO)    _GET_OUTPUT(IO)
+#define GET_OUTPUT(IO)        _GET_OUTPUT(IO)
 
 /// check if pin is a timer (wrapper)
-#define GET_TIMER(IO)     _GET_TIMER(IO)
+#define GET_TIMER(IO)         _GET_TIMER(IO)
 
 // Shorthand
-#define OUT_WRITE(IO,V)   do{ SET_OUTPUT(IO); WRITE(IO,V); }while(0)
+#define OUT_WRITE(IO,V)       do{ SET_OUTPUT(IO); WRITE(IO,V); }while(0)
 
 // digitalRead/Write wrappers
 #define extDigitalRead(IO)    digitalRead(IO)

Marlin/src/HAL/HAL_STM32/fastio_STM32.h

@@ -77,7 +77,7 @@ void FastIO_init(); // Must be called before using fast io macros
 #define GET_OUTPUT(IO)
 #define GET_TIMER(IO)
 
-#define PWM_PIN(p) digitalPinHasPWM(p)
+#define PWM_PIN(p)              digitalPinHasPWM(p)
 #define USEABLE_HARDWARE_PWM(p) PWM_PIN(p)
 
 // digitalRead/Write wrappers

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/HAL/HAL_STM32F1/fastio_STM32F1.h

@@ -42,7 +42,7 @@
 
 #define SET_INPUT(IO)         _SET_MODE(IO, GPIO_INPUT_FLOATING)
 #define SET_INPUT_PULLUP(IO)  _SET_MODE(IO, GPIO_INPUT_PU)
-#define SET_OUTPUT(IO)        OUT_WRITE(IO,LOW)
+#define SET_OUTPUT(IO)        OUT_WRITE(IO, LOW)
 
 #define GET_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 GET_OUTPUT(IO)        (_GET_MODE(IO) == GPIO_OUTPUT_PP)

Marlin/src/HAL/HAL_STM32F7/fastio_STM32F7.h

@@ -50,7 +50,7 @@
 #define GET_OUTPUT(IO)
 #define GET_TIMER(IO)
 
-#define PWM_PIN(p) true
+#define PWM_PIN(p)              true
 #define USEABLE_HARDWARE_PWM(p) PWM_PIN(p)
 
 // digitalRead/Write wrappers

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)