diff options
| author | tmk <hasu@tmk-kbd.com> | 2015-04-10 01:32:04 +0900 |
|---|---|---|
| committer | tmk <hasu@tmk-kbd.com> | 2015-04-10 01:32:04 +0900 |
| commit | a074364c3731d66b56d988c8a6c960a83ea0e0a1 (patch) | |
| tree | 5a4ecf854c41b510b4378bacb7c7228297f8bc58 /protocol/lufa/LUFA-120730/LUFA/Common/Common.h | |
Squashed 'tmk_core/' content from commit 05caacc
git-subtree-dir: tmk_core
git-subtree-split: 05caaccec92694bb24c8c3c3a9940b96efd4605c
Diffstat (limited to 'protocol/lufa/LUFA-120730/LUFA/Common/Common.h')
| -rw-r--r-- | protocol/lufa/LUFA-120730/LUFA/Common/Common.h | 381 |
1 files changed, 381 insertions, 0 deletions
diff --git a/protocol/lufa/LUFA-120730/LUFA/Common/Common.h b/protocol/lufa/LUFA-120730/LUFA/Common/Common.h new file mode 100644 index 0000000000..cf1f49b9da --- /dev/null +++ b/protocol/lufa/LUFA-120730/LUFA/Common/Common.h @@ -0,0 +1,381 @@ +/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2012.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.lufa-lib.org
+*/
+
+/*
+ Copyright 2012 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+
+ Permission to use, copy, modify, distribute, and sell this
+ software and its documentation for any purpose is hereby granted
+ without fee, provided that the above copyright notice appear in
+ all copies and that both that the copyright notice and this
+ permission notice and warranty disclaimer appear in supporting
+ documentation, and that the name of the author not be used in
+ advertising or publicity pertaining to distribution of the
+ software without specific, written prior permission.
+
+ The author disclaim all warranties with regard to this
+ software, including all implied warranties of merchantability
+ and fitness. In no event shall the author be liable for any
+ special, indirect or consequential damages or any damages
+ whatsoever resulting from loss of use, data or profits, whether
+ in an action of contract, negligence or other tortious action,
+ arising out of or in connection with the use or performance of
+ this software.
+*/
+
+/** \dir
+ * \brief Common library header files.
+ *
+ * This folder contains header files which are common to all parts of the LUFA library. They may be used freely in
+ * user applications.
+ */
+
+/** \file
+ * \brief Common library convenience headers, macros and functions.
+ *
+ * \copydetails Group_Common
+ */
+
+/** \defgroup Group_Common Common Utility Headers - LUFA/Drivers/Common/Common.h
+ * \brief Common library convenience headers, macros and functions.
+ *
+ * Common utility headers containing macros, functions, enums and types which are common to all
+ * aspects of the library.
+ *
+ * @{
+ */
+
+/** \defgroup Group_GlobalInt Global Interrupt Macros
+ * \brief Convenience macros for the management of interrupts globally within the device.
+ *
+ * Macros and functions to create and control global interrupts within the device.
+ */
+
+#ifndef __LUFA_COMMON_H__
+#define __LUFA_COMMON_H__
+
+ /* Macros: */
+ #define __INCLUDE_FROM_COMMON_H
+
+ /* Includes: */
+ #include <stdint.h>
+ #include <stdbool.h>
+ #include <string.h>
+ #include <stddef.h>
+
+ #include "Architectures.h"
+ #include "BoardTypes.h"
+ #include "ArchitectureSpecific.h"
+ #include "CompilerSpecific.h"
+ #include "Attributes.h"
+
+ #if defined(USE_LUFA_CONFIG_HEADER)
+ #include "LUFAConfig.h"
+ #endif
+
+ /* Enable C linkage for C++ Compilers: */
+ #if defined(__cplusplus)
+ extern "C" {
+ #endif
+
+ /* Architecture specific utility includes: */
+ #if defined(__DOXYGEN__)
+ /** Type define for an unsigned integer the same width as the selected architecture's machine register.
+ * This is distinct from the non-specific standard int data type, whose width is machine dependant but
+ * which may not reflect the actual machine register width on some targets (e.g. AVR8).
+ */
+ typedef MACHINE_REG_t uint_reg_t;
+ #elif (ARCH == ARCH_AVR8)
+ #include <avr/io.h>
+ #include <avr/interrupt.h>
+ #include <avr/pgmspace.h>
+ #include <avr/eeprom.h>
+ #include <avr/boot.h>
+ #include <math.h>
+ #include <util/delay.h>
+
+ typedef uint8_t uint_reg_t;
+
+ #define ARCH_HAS_EEPROM_ADDRESS_SPACE
+ #define ARCH_HAS_FLASH_ADDRESS_SPACE
+ #define ARCH_HAS_MULTI_ADDRESS_SPACE
+ #define ARCH_LITTLE_ENDIAN
+
+ #include "Endianness.h"
+ #elif (ARCH == ARCH_UC3)
+ #include <avr32/io.h>
+ #include <math.h>
+
+ // === TODO: Find abstracted way to handle these ===
+ #define PROGMEM
+ #define pgm_read_byte(x) *x
+ #define memcmp_P(...) memcmp(__VA_ARGS__)
+ #define memcpy_P(...) memcpy(__VA_ARGS__)
+ // =================================================
+
+ typedef uint32_t uint_reg_t;
+
+ #define ARCH_BIG_ENDIAN
+
+ #include "Endianness.h"
+ #elif (ARCH == ARCH_XMEGA)
+ #include <avr/io.h>
+ #include <avr/interrupt.h>
+ #include <avr/pgmspace.h>
+ #include <avr/eeprom.h>
+ #include <math.h>
+ #include <util/delay.h>
+
+ typedef uint8_t uint_reg_t;
+
+ #define ARCH_HAS_EEPROM_ADDRESS_SPACE
+ #define ARCH_HAS_FLASH_ADDRESS_SPACE
+ #define ARCH_HAS_MULTI_ADDRESS_SPACE
+ #define ARCH_LITTLE_ENDIAN
+
+ #include "Endianness.h"
+ #else
+ #error Unknown device architecture specified.
+ #endif
+
+ /* Public Interface - May be used in end-application: */
+ /* Macros: */
+ /** Macro for encasing other multi-statement macros. This should be used along with an opening brace
+ * before the start of any multi-statement macro, so that the macros contents as a whole are treated
+ * as a discrete block and not as a list of separate statements which may cause problems when used as
+ * a block (such as inline \c if statements).
+ */
+ #define MACROS do
+
+ /** Macro for encasing other multi-statement macros. This should be used along with a preceding closing
+ * brace at the end of any multi-statement macro, so that the macros contents as a whole are treated
+ * as a discrete block and not as a list of separate statements which may cause problems when used as
+ * a block (such as inline \c if statements).
+ */
+ #define MACROE while (0)
+
+ /** Convenience macro to determine the larger of two values.
+ *
+ * \attention This macro should only be used with operands that do not have side effects from being evaluated
+ * multiple times.
+ *
+ * \param[in] x First value to compare
+ * \param[in] y First value to compare
+ *
+ * \return The larger of the two input parameters
+ */
+ #if !defined(MAX) || defined(__DOXYGEN__)
+ #define MAX(x, y) (((x) > (y)) ? (x) : (y))
+ #endif
+
+ /** Convenience macro to determine the smaller of two values.
+ *
+ * \attention This macro should only be used with operands that do not have side effects from being evaluated
+ * multiple times.
+ *
+ * \param[in] x First value to compare
+ * \param[in] y First value to compare
+ *
+ * \return The smaller of the two input parameters
+ */
+ #if !defined(MIN) || defined(__DOXYGEN__)
+ #define MIN(x, y) (((x) < (y)) ? (x) : (y))
+ #endif
+
+ #if !defined(STRINGIFY) || defined(__DOXYGEN__)
+ /** Converts the given input into a string, via the C Preprocessor. This macro puts literal quotation
+ * marks around the input, converting the source into a string literal.
+ *
+ * \param[in] x Input to convert into a string literal.
+ *
+ * \return String version of the input.
+ */
+ #define STRINGIFY(x) #x
+
+ /** Converts the given input into a string after macro expansion, via the C Preprocessor. This macro puts
+ * literal quotation marks around the expanded input, converting the source into a string literal.
+ *
+ * \param[in] x Input to expand and convert into a string literal.
+ *
+ * \return String version of the expanded input.
+ */
+ #define STRINGIFY_EXPANDED(x) STRINGIFY(x)
+ #endif
+
+ #if !defined(ISR) || defined(__DOXYGEN__)
+ /** Macro for the definition of interrupt service routines, so that the compiler can insert the required
+ * prologue and epilogue code to properly manage the interrupt routine without affecting the main thread's
+ * state with unintentional side-effects.
+ *
+ * Interrupt handlers written using this macro may still need to be registered with the microcontroller's
+ * Interrupt Controller (if present) before they will properly handle incoming interrupt events.
+ *
+ * \note This macro is only supplied on some architectures, where the standard library does not include a valid
+ * definition. If an existing definition exists, the alternative definition here will be ignored.
+ *
+ * \ingroup Group_GlobalInt
+ *
+ * \param[in] Name Unique name of the interrupt service routine.
+ */
+ #define ISR(Name, ...) void Name (void) __attribute__((__interrupt__)) __VA_ARGS__; void Name (void)
+ #endif
+
+ /* Inline Functions: */
+ /** Function to reverse the individual bits in a byte - i.e. bit 7 is moved to bit 0, bit 6 to bit 1,
+ * etc.
+ *
+ * \param[in] Byte Byte of data whose bits are to be reversed.
+ *
+ * \return Input data with the individual bits reversed (mirrored).
+ */
+ static inline uint8_t BitReverse(uint8_t Byte) ATTR_WARN_UNUSED_RESULT ATTR_CONST;
+ static inline uint8_t BitReverse(uint8_t Byte)
+ {
+ Byte = (((Byte & 0xF0) >> 4) | ((Byte & 0x0F) << 4));
+ Byte = (((Byte & 0xCC) >> 2) | ((Byte & 0x33) << 2));
+ Byte = (((Byte & 0xAA) >> 1) | ((Byte & 0x55) << 1));
+
+ return Byte;
+ }
+
+ /** Function to perform a blocking delay for a specified number of milliseconds. The actual delay will be
+ * at a minimum the specified number of milliseconds, however due to loop overhead and internal calculations
+ * may be slightly higher.
+ *
+ * \param[in] Milliseconds Number of milliseconds to delay
+ */
+ static inline void Delay_MS(uint16_t Milliseconds) ATTR_ALWAYS_INLINE;
+ static inline void Delay_MS(uint16_t Milliseconds)
+ {
+ #if (ARCH == ARCH_AVR8)
+ if (GCC_IS_COMPILE_CONST(Milliseconds))
+ {
+ _delay_ms(Milliseconds);
+ }
+ else
+ {
+ while (Milliseconds--)
+ _delay_ms(1);
+ }
+ #elif (ARCH == ARCH_UC3)
+ while (Milliseconds--)
+ {
+ __builtin_mtsr(AVR32_COUNT, 0);
+ while ((uint32_t)__builtin_mfsr(AVR32_COUNT) < (F_CPU / 1000));
+ }
+ #elif (ARCH == ARCH_XMEGA)
+ if (GCC_IS_COMPILE_CONST(Milliseconds))
+ {
+ _delay_ms(Milliseconds);
+ }
+ else
+ {
+ while (Milliseconds--)
+ _delay_ms(1);
+ }
+ #endif
+ }
+
+ /** Retrieves a mask which contains the current state of the global interrupts for the device. This
+ * value can be stored before altering the global interrupt enable state, before restoring the
+ * flag(s) back to their previous values after a critical section using \ref SetGlobalInterruptMask().
+ *
+ * \ingroup Group_GlobalInt
+ *
+ * \return Mask containing the current Global Interrupt Enable Mask bit(s).
+ */
+ static inline uint_reg_t GetGlobalInterruptMask(void) ATTR_ALWAYS_INLINE ATTR_WARN_UNUSED_RESULT;
+ static inline uint_reg_t GetGlobalInterruptMask(void)
+ {
+ GCC_MEMORY_BARRIER();
+
+ #if (ARCH == ARCH_AVR8)
+ return SREG;
+ #elif (ARCH == ARCH_UC3)
+ return __builtin_mfsr(AVR32_SR);
+ #elif (ARCH == ARCH_XMEGA)
+ return SREG;
+ #endif
+ }
+
+ /** Sets the global interrupt enable state of the microcontroller to the mask passed into the function.
+ * This can be combined with \ref GetGlobalInterruptMask() to save and restore the Global Interrupt Enable
+ * Mask bit(s) of the device after a critical section has completed.
+ *
+ * \ingroup Group_GlobalInt
+ *
+ * \param[in] GlobalIntState Global Interrupt Enable Mask value to use
+ */
+ static inline void SetGlobalInterruptMask(const uint_reg_t GlobalIntState) ATTR_ALWAYS_INLINE;
+ static inline void SetGlobalInterruptMask(const uint_reg_t GlobalIntState)
+ {
+ GCC_MEMORY_BARRIER();
+
+ #if (ARCH == ARCH_AVR8)
+ SREG = GlobalIntState;
+ #elif (ARCH == ARCH_UC3)
+ if (GlobalIntState & AVR32_SR_GM)
+ __builtin_ssrf(AVR32_SR_GM_OFFSET);
+ else
+ __builtin_csrf(AVR32_SR_GM_OFFSET);
+ #elif (ARCH == ARCH_XMEGA)
+ SREG = GlobalIntState;
+ #endif
+
+ GCC_MEMORY_BARRIER();
+ }
+
+ /** Enables global interrupt handling for the device, allowing interrupts to be handled.
+ *
+ * \ingroup Group_GlobalInt
+ */
+ static inline void GlobalInterruptEnable(void) ATTR_ALWAYS_INLINE;
+ static inline void GlobalInterruptEnable(void)
+ {
+ GCC_MEMORY_BARRIER();
+
+ #if (ARCH == ARCH_AVR8)
+ sei();
+ #elif (ARCH == ARCH_UC3)
+ __builtin_csrf(AVR32_SR_GM_OFFSET);
+ #elif (ARCH == ARCH_XMEGA)
+ sei();
+ #endif
+
+ GCC_MEMORY_BARRIER();
+ }
+
+ /** Disabled global interrupt handling for the device, preventing interrupts from being handled.
+ *
+ * \ingroup Group_GlobalInt
+ */
+ static inline void GlobalInterruptDisable(void) ATTR_ALWAYS_INLINE;
+ static inline void GlobalInterruptDisable(void)
+ {
+ GCC_MEMORY_BARRIER();
+
+ #if (ARCH == ARCH_AVR8)
+ cli();
+ #elif (ARCH == ARCH_UC3)
+ __builtin_ssrf(AVR32_SR_GM_OFFSET);
+ #elif (ARCH == ARCH_XMEGA)
+ cli();
+ #endif
+
+ GCC_MEMORY_BARRIER();
+ }
+
+ /* Disable C linkage for C++ Compilers: */
+ #if defined(__cplusplus)
+ }
+ #endif
+
+#endif
+
+/** @} */
+
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