/*
LUFA Library
- Copyright (C) Dean Camera, 2011.
+ Copyright (C) Dean Camera, 2014.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
- Copyright 2011 Dean Camera (dean [at] fourwalledcubicle [dot] com)
+ Copyright 2014 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
advertising or publicity pertaining to distribution of the
software without specific, written prior permission.
- The author disclaim all warranties with regard to this
+ The author disclaims 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
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.
*
* @{
*/
-/** \defgroup Group_Debugging Debugging Macros
- * \brief Convenience macros to aid in debugging applications.
- *
- * Macros to aid debugging of a user application.
- */
-
/** \defgroup Group_GlobalInt Global Interrupt Macros
* \brief Convenience macros for the management of interrupts globally within the device.
*
/* 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
- #include "Architectures.h"
- #include "Attributes.h"
- #include "BoardTypes.h"
-
/* Enable C linkage for C++ Compilers: */
#if defined(__cplusplus)
extern "C" {
#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
#include "Endianness.h"
#elif (ARCH == ARCH_UC3)
#include <avr32/io.h>
+ #include <math.h>
// === TODO: Find abstracted way to handle these ===
- #define PROGMEM const
+ #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
/** Convenience macro to determine the larger of two values.
*
- * \note This macro should only be used with operands that do not have side effects from being evaluated
- * multiple times.
+ * \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)
+ #define MAX(x, y) (((x) > (y)) ? (x) : (y))
#endif
/** Convenience macro to determine the smaller of two values.
*
- * \note This macro should only be used with operands that do not have side effects from being evaluated
- * multiple times.
+ * \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
+ * \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)
+ #define MIN(x, y) (((x) < (y)) ? (x) : (y))
#endif
- #if (ARCH == ARCH_AVR8) || defined(__DOXYGEN__)
- /** Defines a volatile \c NOP statement which cannot be optimized out by the compiler, and thus can always
- * be set as a breakpoint in the resulting code. Useful for debugging purposes, where the optimizer
- * removes/reorders code to the point where break points cannot reliably be set.
+ #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.
*
- * \note This macro is not available for all architectures.
+ * \param[in] x Input to convert into a string literal.
*
- * \ingroup Group_Debugging
+ * \return String version of the input.
*/
- #define JTAG_DEBUG_POINT() __asm__ __volatile__ ("NOP" ::)
+ #define STRINGIFY(x) #x
- /** Defines an explicit JTAG break point in the resulting binary via the assembly \c BREAK statement. When
- * a JTAG is used, this causes the program execution to halt when reached until manually resumed.
+ /** 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.
*
- * \note This macro is not available for all architectures.
+ * \param[in] x Input to expand and convert into a string literal.
*
- * \ingroup Group_Debugging
+ * \return String version of the expanded input.
*/
- #define JTAG_DEBUG_BREAK() __asm__ __volatile__ ("BREAK" ::)
+ #define STRINGIFY_EXPANDED(x) STRINGIFY(x)
+ #endif
- /** Macro for testing condition "x" and breaking via \ref JTAG_DEBUG_BREAK() if the condition is false.
- *
- * \note This macro is not available for all architectures.
+ #if !defined(CONCAT) || defined(__DOXYGEN__)
+ /** Concatenates the given input into a single token, via the C Preprocessor.
*
- * \param[in] Condition Condition that will be evaluated.
+ * \param[in] x First item to concatenate.
+ * \param[in] y Second item to concatenate.
*
- * \ingroup Group_Debugging
- */
- #define JTAG_DEBUG_ASSERT(Condition) MACROS{ if (!(Condition)) { JTAG_DEBUG_BREAK(); } }MACROE
+ * \return Concatenated version of the input.
+ */
+ #define CONCAT(x, y) x ## y
- /** Macro for testing condition "x" and writing debug data to the stdout stream if \c false. The stdout stream
- * must be pre-initialized before this macro is run and linked to an output device, such as the microcontroller's
- * USART peripheral.
- *
- * The output takes the form "{FILENAME}: Function {FUNCTION NAME}, Line {LINE NUMBER}: Assertion {Condition} failed."
+ /** CConcatenates the given input into a single token after macro expansion, via the C Preprocessor.
*
- * \note This macro is not available for all architectures.
+ * \param[in] x First item to concatenate.
+ * \param[in] y Second item to concatenate.
*
- * \param[in] Condition Condition that will be evaluated,
- *
- * \ingroup Group_Debugging
+ * \return Concatenated version of the expanded input.
*/
- #define STDOUT_ASSERT(Condition) MACROS{ if (!(x)) { printf_P(PSTR("%s: Function \"%s\", Line %d: " \
- "Assertion \"%s\" failed.\r\n"), \
- __FILE__, __func__, __LINE__, #Condition); } }MACROE
-
- #if !defined(pgm_read_ptr) || defined(__DOXYGEN__)
- /** Reads a pointer out of PROGMEM space on the AVR8 architecture. This is currently a wrapper for the
- * avr-libc \c pgm_read_ptr() macro with a \c void* cast, so that its value can be assigned directly
- * to a pointer variable or used in pointer arithmetic without further casting in C. In a future
- * avr-libc distribution this will be part of the standard API and will be implemented in a more formal
- * manner.
- *
- * \note This macro is not available for all architectures.
- *
- * \param[in] Address Address of the pointer to read.
- *
- * \return Pointer retrieved from PROGMEM space.
- */
- #define pgm_read_ptr(Address) (void*)pgm_read_word(Address)
- #endif
+ #define CONCAT_EXPANDED(x, y) CONCAT(x, y)
#endif
-
- /** Forces GCC to use pointer indirection (via the device's pointer register pairs) when accessing the given
- * struct pointer. In some cases GCC will emit non-optimal assembly code when accessing a structure through
- * a pointer, resulting in a larger binary. When this macro is used on a (non \c const) structure pointer before
- * use, it will force GCC to use pointer indirection on the elements rather than direct store and load
- * instructions.
- *
- * \param[in, out] StructPtr Pointer to a structure which is to be forced into indirect access mode.
- */
- #define GCC_FORCE_POINTER_ACCESS(StructPtr) __asm__ __volatile__("" : "=b" (StructPtr) : "0" (StructPtr))
-
- /** Forces GCC to create a memory barrier, ensuring that memory accesses are not reordered past the barrier point.
- * This can be used before ordering-critical operations, to ensure that the compiler does not re-order the resulting
- * assembly output in an unexpected manner on sections of code that are ordering-specific.
- */
- #define GCC_MEMORY_BARRIER() __asm__ __volatile__("" ::: "memory");
-
- /** Evaluates to boolean true if the specified value can be determined at compile time to be a constant value
- * when compiling under GCC.
- *
- * \param[in] x Value to check compile time constantness of.
- *
- * \return Boolean true if the given value is known to be a compile time constant.
- */
- #define GCC_IS_COMPILE_CONST(x) __builtin_constant_p(x)
#if !defined(ISR) || defined(__DOXYGEN__)
/** Macro for the definition of interrupt service routines, so that the compiler can insert the required
*
* \ingroup Group_GlobalInt
*
- * \param Name Unique name of the interrupt service routine.
+ * \param[in] Name Unique name of the interrupt service routine.
*/
- #define ISR(Name, ...) void Name (void) __attribute__((__interrupt__)) __VA_ARGS__; void Name (void)
+ #define ISR(Name, ...) void Name (void) __attribute__((__interrupt__)) __VA_ARGS__; void Name (void)
#endif
/* Inline Functions: */
* 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)
*
* \param[in] Milliseconds Number of milliseconds to delay
*/
- static inline void Delay_MS(uint8_t Milliseconds) ATTR_ALWAYS_INLINE;
- static inline void Delay_MS(uint8_t Milliseconds)
+ 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))
while (Milliseconds--)
{
__builtin_mtsr(AVR32_COUNT, 0);
- while (__builtin_mfsr(AVR32_COUNT) < (F_CPU / 1000));
+ 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
}
#if (ARCH == ARCH_AVR8)
return SREG;
#elif (ARCH == ARCH_UC3)
- return __builtin_mfsr(AVR32_SR);
+ return __builtin_mfsr(AVR32_SR);
+ #elif (ARCH == ARCH_XMEGA)
+ return SREG;
#endif
-
- GCC_MEMORY_BARRIER();
}
/** Sets the global interrupt enable state of the microcontroller to the mask passed into the function.
__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
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.
*
cli();
#elif (ARCH == ARCH_UC3)
__builtin_ssrf(AVR32_SR_GM_OFFSET);
+ #elif (ARCH == ARCH_XMEGA)
+ cli();
#endif
GCC_MEMORY_BARRIER();
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