/** * \brief Compiler and Platform specific definitions and typedefs common to * all platforms. * * platform-common.h provides PLATFORM_HEADER defaults and common definitions. * This head should never be included directly, it should only be included * by the specific PLATFORM_HEADER used by your platform. * * See platform-common.h for source code. *@{ */ /** * @addtogroup stm32w-cpu * @{ */ /** \file hal/micro/generic/compiler/platform-common.h * See platform_common.h for detailed documentation. * * <!--(C) COPYRIGHT 2010 STMicroelectronics. All rights reserved. --> */ #ifndef PLATCOMMONOKTOINCLUDE // This header should only be included by a PLATFORM_HEADER #error platform-common.h should not be included directly #endif #ifndef PLATFORMCOMMON_H_ #define PLATFORMCOMMON_H_ //////////////////////////////////////////////////////////////////////////////// // Many of the common definitions must be explicitly enabled by the // particular PLATFORM_HEADER being used //////////////////////////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////////////////////////// #ifdef _HAL_USE_COMMON_PGM_ /** \name Master Program Memory Declarations * These are a set of defines for simple declarations of program memory. */ //@{ /** * \brief Standard program memory delcaration. */ #define PGM const /** * \brief Char pointer to program memory declaration. */ #define PGM_P const char * /** * \brief Unsigned char pointer to program memory declaration. */ #define PGM_PU const unsigned char * /** * \brief Sometimes a second PGM is needed in a declaration. Having two * 'const' declarations generates a warning so we have a second PGM that turns * into nothing under gcc. */ #define PGM_NO_CONST //@} \\END MASTER PROGRAM MEMORY DECLARATIONS #endif //_HAL_USE_COMMON_PGM_ //////////////////////////////////////////////////////////////////////////////// #ifdef _HAL_USE_COMMON_DIVMOD_ /** \name Divide and Modulus Operations * Some platforms can perform divide and modulus operations on 32 bit * quantities more efficiently when the divisor is only a 16 bit quantity. * C compilers will always promote the divisor to 32 bits before performing the * operation, so the following utility functions are instead required to take * advantage of this optimisation. */ //@{ /** * \brief Provide a portable name for the uint32_t by uint16_t division * library function (which can perform the division with only a single * assembly instruction on some platforms) */ #define halCommonUDiv32By16(x, y) ((uint16_t) (((uint32_t) (x)) / ((uint16_t) (y)))) /** * \brief Provide a portable name for the int32_t by int16_t division * library function (which can perform the division with only a single * assembly instruction on some platforms) */ #define halCommonSDiv32By16(x, y) ((int16_t) (((int32_t) (x)) / ((int16_t) (y)))) /** * \brief Provide a portable name for the uint32_t by uint16_t modulo * library function (which can perform the division with only a single * assembly instruction on some platforms) */ #define halCommonUMod32By16(x, y) ((uint16_t) (((uint32_t) (x)) % ((uint16_t) (y)))) /** * \brief Provide a portable name for the int32_t by int16_t modulo * library function (which can perform the division with only a single * assembly instruction on some platforms) */ #define halCommonSMod32By16(x, y) ((int16_t) (((int32_t) (x)) % ((int16_t) (y)))) //@} \\END DIVIDE and MODULUS OPERATIONS #endif //_HAL_USE_COMMON_DIVMOD_ //////////////////////////////////////////////////////////////////////////////// #ifdef _HAL_USE_COMMON_MEMUTILS_ /** \name C Standard Library Memory Utilities * These should be used in place of the standard library functions. * * These functions have the same parameters and expected results as their C * Standard Library equivalents but may take advantage of certain implementation * optimizations. * * Unless otherwise noted, these functions are utilized by the StStack and are * therefore required to be implemented in the HAL. Additionally, unless otherwise * noted, applications that find these functions useful may utilze them. */ //@{ /** * \brief Refer to the C stdlib memcpy(). */ void halCommonMemCopy(void *dest, const void *src, uint8_t bytes); /** * \brief Refer to the C stdlib memset(). */ void halCommonMemSet(void *dest, uint8_t val, uint16_t bytes); /** * \brief Refer to the C stdlib memcmp(). */ int8_t halCommonMemCompare(const void *source0, const void *source1, uint8_t bytes); /** * \brief Friendly convenience macro pointing to the full HAL function. */ #define MEMSET(d,v,l) halCommonMemSet(d,v,l) #define MEMCOPY(d,s,l) halCommonMemCopy(d,s,l) #define MEMCOMPARE(s0,s1,l) halCommonMemCompare(s0, s1, l) #define MEMPGMCOMPARE(s0,s1,l) halCommonMemPGMCompare(s0, s1, l) //@} // end of C Standard Library Memory Utilities #endif //_HAL_USE_COMMON_MEMUTILS_ //////////////////////////////////////////////////////////////////////////////// // The following sections are common on all platforms //////////////////////////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////////////////////////// /** * @name Generic Types *@{ */ /** * \brief An alias for one, used for clarity. */ #define TRUE 1 /** * \brief An alias for zero, used for clarity. */ #define FALSE 0 #ifndef NULL /** * \brief The null pointer. */ #define NULL ((void *)0) #endif //@} \\END Generic Types /** * @name Bit Manipulation Macros */ //@{ /** * \brief Useful to reference a single bit of a byte. */ #define BIT(x) (1U << (x)) // Unsigned avoids compiler warnings re BIT(15) /** * \brief Useful to reference a single bit of an uint32_t type. */ #define BIT32(x) (((uint32_t) 1) << (x)) /** * \brief Sets \c bit in the \c reg register or byte. * @note Assuming \c reg is an IO register, some platforms * can implement this in a single atomic operation. */ #define SETBIT(reg, bit) reg |= BIT(bit) /** * \brief Sets the bits in the \c reg register or the byte * as specified in the bitmask \c bits. * @note This is never a single atomic operation. */ #define SETBITS(reg, bits) reg |= (bits) /** * \brief Clears a bit in the \c reg register or byte. * @note Assuming \c reg is an IO register, some platforms (such as the AVR) * can implement this in a single atomic operation. */ #define CLEARBIT(reg, bit) reg &= ~(BIT(bit)) /** * \brief Clears the bits in the \c reg register or byte * as specified in the bitmask \c bits. * @note This is never a single atomic operation. */ #define CLEARBITS(reg, bits) reg &= ~(bits) /** * \brief Returns the value of \c bit within the register or byte \c reg. */ #define READBIT(reg, bit) (reg & (BIT(bit))) /** * \brief Returns the value of the bitmask \c bits within * the register or byte \c reg. */ #define READBITS(reg, bits) (reg & (bits)) //@} \\END Bit Manipulation Macros //////////////////////////////////////////////////////////////////////////////// /** * @name Byte Manipulation Macros */ //@{ /** * \brief Returns the low byte of the 16-bit value \c n as an \c uint8_t. */ #define LOW_BYTE(n) ((uint8_t)((n) & 0xFF)) /** * \brief Returns the high byte of the 16-bit value \c n as an \c uint8_t. */ #define HIGH_BYTE(n) ((uint8_t)(LOW_BYTE((n) >> 8))) /** * \brief Returns the value built from the two \c uint8_t * values \c high and \c low. */ #define HIGH_LOW_TO_INT(high, low) ( \ (( (uint16_t) (high) ) << 8) + \ ( (uint16_t) ( (low) & 0xFF)) \ ) /** * \brief Returns the low byte of the 32-bit value \c n as an \c uint8_t. */ #define BYTE_0(n) ((uint8_t)((n) & 0xFF)) /** * \brief Returns the second byte of the 32-bit value \c n as an \c uint8_t. */ #define BYTE_1(n) ((uint8_t)(BYTE_0((n) >> 8))) /** * \brief Returns the third byte of the 32-bit value \c n as an \c uint8_t. */ #define BYTE_2(n) ((uint8_t)(BYTE_0((n) >> 16))) /** * \brief Returns the high byte of the 32-bit value \c n as an \c uint8_t. */ #define BYTE_3(n) ((uint8_t)(BYTE_0((n) >> 24))) //@} \\END Byte manipulation macros //////////////////////////////////////////////////////////////////////////////// /** * @name Time Manipulation Macros */ //@{ /** * \brief Returns the elapsed time between two 8 bit values. * Result may not be valid if the time samples differ by more than 127 */ #define elapsedTimeInt8u(oldTime, newTime) \ ((uint8_t) ((uint8_t)(newTime) - (uint8_t)(oldTime))) /** * \brief Returns the elapsed time between two 16 bit values. * Result may not be valid if the time samples differ by more than 32767 */ #define elapsedTimeInt16u(oldTime, newTime) \ ((uint16_t) ((uint16_t)(newTime) - (uint16_t)(oldTime))) /** * \brief Returns the elapsed time between two 32 bit values. * Result may not be valid if the time samples differ by more than 2147483647 */ #define elapsedTimeInt32u(oldTime, newTime) \ ((uint32_t) ((uint32_t)(newTime) - (uint32_t)(oldTime))) /** * \brief Returns TRUE if t1 is greater than t2. Can only account for 1 wrap * around of the variable before it is wrong. */ #define MAX_INT8U_VALUE 0xFF #define timeGTorEqualInt8u(t1, t2) \ (elapsedTimeInt8u(t2, t1) <= ((MAX_INT8U_VALUE + 1) / 2)) /** * \brief Returns TRUE if t1 is greater than t2. Can only account for 1 wrap * around of the variable before it is wrong. */ #define MAX_INT16U_VALUE 0xFFFF #define timeGTorEqualInt16u(t1, t2) \ (elapsedTimeInt16u(t2, t1) <= ((MAX_INT16U_VALUE + 1) / 2)) /** * \brief Returns TRUE if t1 is greater than t2. Can only account for 1 wrap * around of the variable before it is wrong. */ #define MAX_INT32U_VALUE 0xFFFFFFFF #define timeGTorEqualInt32u(t1, t2) \ (elapsedTimeInt32u(t2, t1) <= ((MAX_INT32U_VALUE + 1) / 2)) //@} \\END Time manipulation macros #endif //PLATFORMCOMMON_H_ /** @} END addtogroup */ /** @} */