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Added HOST_STATE_AS_GPIOR1 and DEVICE_STATE_AS_GPIOR0 compile time options, the latter of which is used in the bootloaders, to reduce code size.

Browse Source
pull/1469/head
Dean Camera 16 years ago
parent 23c1653efe
commit c1be307393
7 changed files with 68 additions and 34 deletions
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1
Bootloaders/CDC/makefile
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@ -117,6 +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 FIXED_CONTROL_ENDPOINT_SIZE=8
LUFA_OPTS += -D TOTAL_NUM_CONFIGURATIONS=1
LUFA_OPTS += -D USE_RAM_DESCRIPTORS

1
Bootloaders/DFU/makefile
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@ -117,6 +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 CONTROL_ONLY_DEVICE
LUFA_OPTS += -D FIXED_CONTROL_ENDPOINT_SIZE=32
LUFA_OPTS += -D TOTAL_NUM_CONFIGURATIONS=1

1
Bootloaders/TeensyHID/makefile
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@ -118,6 +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 FIXED_CONTROL_ENDPOINT_SIZE=8
LUFA_OPTS += -D TOTAL_NUM_CONFIGURATIONS=1
LUFA_OPTS += -D USE_RAM_DESCRIPTORS

4
LUFA/Drivers/USB/HighLevel/USBTask.c
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@ -36,11 +36,11 @@
volatile bool USB_IsInitialized;
USB_Request_Header_t USB_ControlRequest;
#if defined(USB_CAN_BE_HOST)
#if defined(USB_CAN_BE_HOST) && !defined(HOST_STATE_AS_GPIOR1)
volatile uint8_t USB_HostState;
#endif
#if defined(USB_CAN_BE_DEVICE)
#if defined(USB_CAN_BE_DEVICE) && !defined(DEVICE_STATE_AS_GPIOR0)
volatile uint8_t USB_DeviceState;
#endif

18
LUFA/Drivers/USB/HighLevel/USBTask.h
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@ -74,6 +74,7 @@
extern USB_Request_Header_t USB_ControlRequest;
#if defined(USB_CAN_BE_HOST) || defined(__DOXYGEN__)
#if !defined(HOST_STATE_AS_GPIOR1) || defined(__DOXYGEN__)
/** Indicates the current host state machine state. When in host mode, this indicates the state
* via one of the values of the \ref USB_Host_States_t enum values.
*
@ -81,6 +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.
*
* \note This global is only present if the user application can be a USB host.
*
* \see \ref USB_Host_States_t for a list of possible device states
@ -88,9 +94,13 @@
* \ingroup Group_Host
*/
extern volatile uint8_t USB_HostState;
#else
#define USB_HostState GPIOR1
#endif
#endif
#if defined(USB_CAN_BE_DEVICE) || defined(__DOXYGEN__)
#if !defined(DEVICE_STATE_AS_GPIOR0) || 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.
*
@ -98,6 +108,11 @@
* 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.
*
* \note This global is only present if the user application can be a USB device.
*
* \note This variable should be treated as read-only in the user application, and never manually
@ -108,6 +123,9 @@
* \ingroup Group_Device
*/
extern volatile uint8_t USB_DeviceState;
#else
#define USB_DeviceState GPIOR0
#endif
#endif
/* Function Prototypes: */

1
LUFA/ManPages/ChangeLog.txt
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@ -34,6 +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
*
* <b>Changed:</b>
* - Deprecated psuedo-scheduler and removed dynamic memory allocator from the library (first no longer needed and second unused)

12
LUFA/ManPages/CompileTimeTokens.txt
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@ -95,6 +95,18 @@
* 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
* 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.
*
* <b>HOST_STATE_AS_GPIOR1</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.
*
* <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
* the amount of configuration required to set up the library, and allows the value to change dynamically (if descriptors are stored in

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