From fc10101b06ff0fa4dd47cf0b2f6aedd60bc2fc3e Mon Sep 17 00:00:00 2001
From: Scott Lahteine <github@thinkyhead.com>
Date: Sat, 30 Jun 2018 00:12:48 -0500
Subject: [PATCH] Tweaks to fastio_Due.h

---
 Marlin/src/HAL/HAL_DUE/fastio_Due.h | 33 ++++++++++++++---------------
 1 file changed, 16 insertions(+), 17 deletions(-)

diff --git a/Marlin/src/HAL/HAL_DUE/fastio_Due.h b/Marlin/src/HAL/HAL_DUE/fastio_Due.h
index fe0923ead5..a28fbc9d65 100644
--- a/Marlin/src/HAL/HAL_DUE/fastio_Due.h
+++ b/Marlin/src/HAL/HAL_DUE/fastio_Due.h
@@ -78,55 +78,54 @@
   else port->PIO_CODR = mask; \
 } while(0)
 
-// toggle a pin
+// Toggle a pin
 #define _TOGGLE(IO) _WRITE(IO, !READ(IO))
 
-// set pin as input
+// Set pin as input
 #define _SET_INPUT(IO) do{ \
   pmc_enable_periph_clk(g_APinDescription[IO].ulPeripheralId); \
   PIO_Configure(g_APinDescription[IO].pPort, PIO_INPUT, g_APinDescription[IO].ulPin, 0); \
 }while(0)
 
-// set pin as output
+// Set pin as output
 #define _SET_OUTPUT(IO) do{ \
   pmc_enable_periph_clk(g_APinDescription[IO].ulPeripheralId); \
   PIO_Configure(g_APinDescription[IO].pPort, _READ(IO) ? PIO_OUTPUT_1 : PIO_OUTPUT_0, g_APinDescription[IO].ulPin, g_APinDescription[IO].ulPinConfiguration); \
   g_pinStatus[IO] = (g_pinStatus[IO] & 0xF0) | PIN_STATUS_DIGITAL_OUTPUT;\
 }while(0)
 
-// set pin as input with pullup mode
+// Set pin as input with pullup mode
 #define _PULLUP(IO,V) pinMode(IO, (V) ? INPUT_PULLUP : INPUT)
 
-// check if pin is an input
+// Check if pin is an input
 #define _GET_INPUT(IO)
-// check if pin is an output
+// Check if pin is an output
 #define _GET_OUTPUT(IO)
-
-// check if pin is a timer
+// Check if pin is a timer
 #define _GET_TIMER(IO)
 
-// Read a pin wrapper
+// Read a pin (wrapper)
 #define READ(IO) _READ(IO)
 
-// Write to a pin wrapper
+// Write to a pin (wrapper)
 #define WRITE_VAR(IO,V) _WRITE_VAR(IO,V)
 #define WRITE(IO,V) _WRITE(IO,V)
 
-// toggle a pin wrapper
+// Toggle a pin (wrapper)
 #define TOGGLE(IO) _TOGGLE(IO)
 
-// set pin as input wrapper
+// Set pin as input (wrapper)
 #define SET_INPUT(IO) _SET_INPUT(IO)
-// set pin as input with pullup wrapper
+// 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
+// Set pin as output (wrapper) -  reads the pin and sets the output to that value
 #define SET_OUTPUT(IO) _SET_OUTPUT(IO)
-// check if pin is an input wrapper
+// Check if pin is an input (wrapper)
 #define GET_INPUT(IO) _GET_INPUT(IO)
-// check if pin is an output wrapper
+// Check if pin is an output (wrapper)
 #define GET_OUTPUT(IO) _GET_OUTPUT(IO)
 
-// check if pin is a timer (wrapper)
+// Check if pin is a timer (wrapper)
 #define GET_TIMER(IO) _GET_TIMER(IO)
 
 // Shorthand