From e426463355b8516a442c01e0e6b4a574c39fc0f4 Mon Sep 17 00:00:00 2001
From: Dean Camera <dean@fourwalledcubicle.com>
Date: Tue, 28 Jul 2009 13:12:14 +0000
Subject: [PATCH] Better solution - change compile time token names to
 DEVICE_STATE_AS_GPIOR and HOST_STATE_AS_GPIOR and allow the user to set them
 to the index of the GPIOR register within the device to use.

---
 Bootloaders/CDC/makefile             |  2 +-
 Bootloaders/DFU/makefile             |  2 +-
 Bootloaders/TeensyHID/makefile       |  2 +-
 LUFA/Drivers/USB/HighLevel/USBTask.c |  4 ++--
 LUFA/Drivers/USB/HighLevel/USBTask.h | 28 +++++++++++++++++-----------
 LUFA/ManPages/ChangeLog.txt          |  2 +-
 LUFA/ManPages/CompileTimeTokens.txt  | 14 ++++++++------
 7 files changed, 31 insertions(+), 23 deletions(-)

diff --git a/Bootloaders/CDC/makefile b/Bootloaders/CDC/makefile
index 8830f3ed6..21524086c 100644
--- a/Bootloaders/CDC/makefile
+++ b/Bootloaders/CDC/makefile
@@ -117,7 +117,7 @@ LUFA_PATH = ../..
 # LUFA library compile-time options
 LUFA_OPTS  = -D USB_DEVICE_ONLY
 LUFA_OPTS += -D USE_NONSTANDARD_DESCRIPTOR_NAMES
-LUFA_OPTS += -D DEVICE_STATE_AS_GPIOR0
+LUFA_OPTS += -D DEVICE_STATE_AS_GPIOR=0
 LUFA_OPTS += -D FIXED_CONTROL_ENDPOINT_SIZE=8
 LUFA_OPTS += -D TOTAL_NUM_CONFIGURATIONS=1
 LUFA_OPTS += -D USE_RAM_DESCRIPTORS
diff --git a/Bootloaders/DFU/makefile b/Bootloaders/DFU/makefile
index 333eb11c2..0964f0331 100644
--- a/Bootloaders/DFU/makefile
+++ b/Bootloaders/DFU/makefile
@@ -117,7 +117,7 @@ LUFA_PATH = ../..
 # LUFA library compile-time options
 LUFA_OPTS  = -D USB_DEVICE_ONLY
 LUFA_OPTS += -D USE_NONSTANDARD_DESCRIPTOR_NAMES
-LUFA_OPTS += -D DEVICE_STATE_AS_GPIOR0
+LUFA_OPTS += -D DEVICE_STATE_AS_GPIOR=0
 LUFA_OPTS += -D CONTROL_ONLY_DEVICE
 LUFA_OPTS += -D FIXED_CONTROL_ENDPOINT_SIZE=32
 LUFA_OPTS += -D TOTAL_NUM_CONFIGURATIONS=1
diff --git a/Bootloaders/TeensyHID/makefile b/Bootloaders/TeensyHID/makefile
index e02e6cec7..0751024c3 100644
--- a/Bootloaders/TeensyHID/makefile
+++ b/Bootloaders/TeensyHID/makefile
@@ -118,7 +118,7 @@ LUFA_PATH = ../..
 LUFA_OPTS  = -D USB_DEVICE_ONLY
 LUFA_OPTS += -D USE_NONSTANDARD_DESCRIPTOR_NAMES
 LUFA_OPTS += -D CONTROL_ONLY_DEVICE
-LUFA_OPTS += -D DEVICE_STATE_AS_GPIOR0
+LUFA_OPTS += -D DEVICE_STATE_AS_GPIOR=0
 LUFA_OPTS += -D FIXED_CONTROL_ENDPOINT_SIZE=8
 LUFA_OPTS += -D TOTAL_NUM_CONFIGURATIONS=1
 LUFA_OPTS += -D USE_RAM_DESCRIPTORS
diff --git a/LUFA/Drivers/USB/HighLevel/USBTask.c b/LUFA/Drivers/USB/HighLevel/USBTask.c
index 31cedacb8..5c7045792 100644
--- a/LUFA/Drivers/USB/HighLevel/USBTask.c
+++ b/LUFA/Drivers/USB/HighLevel/USBTask.c
@@ -36,11 +36,11 @@
 volatile bool        USB_IsInitialized;
 USB_Request_Header_t USB_ControlRequest;
 
-#if defined(USB_CAN_BE_HOST) && !defined(HOST_STATE_AS_GPIOR1)
+#if defined(USB_CAN_BE_HOST) && !defined(HOST_STATE_AS_GPIOR)
 volatile uint8_t     USB_HostState;
 #endif
 
-#if defined(USB_CAN_BE_DEVICE) && !defined(DEVICE_STATE_AS_GPIOR0)
+#if defined(USB_CAN_BE_DEVICE) && !defined(DEVICE_STATE_AS_GPIOR)
 volatile uint8_t     USB_DeviceState;
 #endif
 
diff --git a/LUFA/Drivers/USB/HighLevel/USBTask.h b/LUFA/Drivers/USB/HighLevel/USBTask.h
index 768057aef..960131563 100644
--- a/LUFA/Drivers/USB/HighLevel/USBTask.h
+++ b/LUFA/Drivers/USB/HighLevel/USBTask.h
@@ -82,10 +82,11 @@
 					 *  \ref HOST_STATE_Configured and \ref HOST_STATE_Suspended states which are not implemented by
 					 *  the library.
 					 *
-					 *  To reduce program size and speed up checks of this global, it can be placed into the AVR's GPIOR1
-					 *  hardware register instead of RAM by defining the HOST_STATE_AS_GPIOR1 token in the project
-					 *  makefile and passing it to the compiler via the -D switch. When defined, the GPIOR1 register should
-					 *  not be used in the user application except implicitly via the library APIs.
+					 *  To reduce program size and speed up checks of this global, it can be placed into one of the AVR's
+					 *  GPIOR hardware registers instead of RAM by defining the HOST_STATE_AS_GPIOR token to a value 
+					 *  between 0 and 2 in the project makefile and passing it to the compiler via the -D switch. When
+					 *  defined, the corresponding GPIOR register should not be used in the user application except
+					 *  implicitly via the library APIs.
 					 *
 					 *  \note This global is only present if the user application can be a USB host.
 					 *
@@ -95,12 +96,14 @@
 					 */
 					extern volatile uint8_t USB_HostState;
 				#else
-					#define USB_HostState GPIOR1
+					#define _GET_HOST_GPIOR_NAME2(y) GPIOR ## y
+					#define _GET_HOST_GPIOR_NAME(x)  _GET_HOST_GPIOR_NAME2(x)
+					#define USB_HostState _GET_HOST_GPIOR_NAME(HOST_STATE_AS_GPIOR)
 				#endif
 			#endif
 
 			#if defined(USB_CAN_BE_DEVICE) || defined(__DOXYGEN__)
-				#if !defined(DEVICE_STATE_AS_GPIOR0) || defined(__DOXYGEN__)
+				#if !defined(DEVICE_STATE_AS_GPIOR) || defined(__DOXYGEN__)
 					/** Indicates the current device state machine state. When in device mode, this indicates the state
 					 *  via one of the values of the \ref USB_Device_States_t enum values.
 					 *
@@ -108,10 +111,11 @@
 					 *  library. The only exception to this rule is if the NO_LIMITED_CONTROLLER_CONNECT token is used
 					 *  (see \ref EVENT_USB_Connect() and \ref EVENT_USB_Disconnect() events).
 					 *
-					 *  To reduce program size and speed up checks of this global, it can be placed into the AVR's GPIOR0
-					 *  hardware register instead of RAM by defining the DEVICE_STATE_AS_GPIOR0 token in the project
-					 *  makefile and passing it to the compiler via the -D switch. When defined, the GPIOR0 register should
-					 *  not be used in the user application except implicitly via the library APIs.
+					 *  To reduce program size and speed up checks of this global, it can be placed into one of the AVR's
+					 *  GPIOR hardware registers instead of RAM by defining the DEVICE_STATE_AS_GPIOR token to a value 
+					 *  between 0 and 2 in the project makefile and passing it to the compiler via the -D switch. When
+					 *  defined, the corresponding GPIOR register should not be used in the user application except
+					 *  implicitly via the library APIs.
 					 *
 					 *  \note This global is only present if the user application can be a USB device.
 					 *
@@ -124,7 +128,9 @@
 					 */
 					extern volatile uint8_t USB_DeviceState;
 				#else
-					#define USB_DeviceState GPIOR0
+					#define _GET_DEVICE_GPIOR_NAME2(y) GPIOR ## y
+					#define _GET_DEVICE_GPIOR_NAME(x)  _GET_DEVICE_GPIOR_NAME2(x)
+					#define USB_DeviceState _GET_DEVICE_GPIOR_NAME(DEVICE_STATE_AS_GPIOR)
 				#endif
 			#endif
 
diff --git a/LUFA/ManPages/ChangeLog.txt b/LUFA/ManPages/ChangeLog.txt
index b8ba3b2ce..2aaef12d4 100644
--- a/LUFA/ManPages/ChangeLog.txt
+++ b/LUFA/ManPages/ChangeLog.txt
@@ -34,7 +34,7 @@
   *  - Added new Benito Arduino Programmer project
   *  - Added new LEDs_ToggleLEDs() function to the LEDs driver
   *  - Added new Pipe_BoundEndpointNumber() and Pipe_IsEndpointBound() functions
-  *  - Added new DEVICE_STATE_AS_GPIOR0 and DEVICE_STATE_AS_GPIOR1 compile time options
+  *  - Added new DEVICE_STATE_AS_GPIOR and HOST_STATE_AS_GPIOR compile time options
   *  
   *  <b>Changed:</b>
   *  - Deprecated psuedo-scheduler and removed dynamic memory allocator from the library (first no longer needed and second unused)
diff --git a/LUFA/ManPages/CompileTimeTokens.txt b/LUFA/ManPages/CompileTimeTokens.txt
index 130a2e8fb..513d85454 100644
--- a/LUFA/ManPages/CompileTimeTokens.txt
+++ b/LUFA/ManPages/CompileTimeTokens.txt
@@ -95,17 +95,19 @@
  *  defined to a non-zero value instead to give the size in bytes of the control endpoint, to reduce the size of the compiled
  *  binary.
  *
- *  <b>DEVICE_STATE_AS_GPIOR0</b> - ( \ref Group_Device ) \n
+ *  <b>DEVICE_STATE_AS_GPIOR</b> - ( \ref Group_Device ) \n
  *  One of the most frequenty used global variables in the stack is the USB_DeviceState global, which indicates the current state of
  *  the Device State Machine. To reduce the amount of code and time required to access and modify this global in an application, this token
- *  make be defined to fix the state variable into one of the three general purpose IO registers inside the AVR reserved for application
- *  use. When defined, the GPIOR0 register should not be used within the user application except implicitly via the library APIs.
+ *  may be defined to a value between 0 and 2 to fix the state variable into one of the three general purpose IO registers inside the AVR
+ *  reserved for application use. When defined, the corresponding GPIOR register should not be used within the user application except
+ *  implicitly via the library APIs.
  *
- *  <b>HOST_STATE_AS_GPIOR1</b> - ( \ref Group_Host ) \n
+ *  <b>HOST_STATE_AS_GPIOR</b> - ( \ref Group_Host ) \n
  *  One of the most frequenty used global variables in the stack is the USB_HostState global, which indicates the current state of
  *  the Host State Machine. To reduce the amount of code and time required to access and modify this global in an application, this token
- *  make be defined to fix the state variable into one of the three general purpose IO registers inside the AVR reserved for application
- *  use. When defined, the GPIOR1 register should not be used within the user application except implicitly via the library APIs.
+ *  may be defined to a value between 0 and 2 to fix the state variable into one of the three general purpose IO registers inside the AVR
+ *  reserved for application use. When defined, the corresponding GPIOR register should not be used within the user application except
+ *  implicitly via the library APIs.
  *
  *  <b>TOTAL_NUM_CONFIGURATIONS</b> - ( \ref Group_Device ) \n
  *  By default, the library determines the number of configurations a USB device supports by reading the device descriptor. This reduces
-- 
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