103 lines
3.9 KiB
C
103 lines
3.9 KiB
C
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/******************************************************************************
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* @attention
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*
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* <h2><center>© COPYRIGHT 2018 STMicroelectronics</center></h2>
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*
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* Licensed under ST MYLIBERTY SOFTWARE LICENSE AGREEMENT (the "License");
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* You may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.st.com/myliberty
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied,
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* AND SPECIFICALLY DISCLAIMING THE IMPLIED WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************/
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/*
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* PROJECT: NFCC firmware
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* $Revision: $
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* LANGUAGE: ISO C99
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*/
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/*! \file
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*
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* \author Ulrich Herrmann
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*
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* \brief Common and helpful macros
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*
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*/
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#ifndef UTILS_H
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#define UTILS_H
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/*
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******************************************************************************
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* INCLUDES
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******************************************************************************
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*/
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#include <string.h>
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#include <stdint.h>
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/*
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******************************************************************************
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* GLOBAL MACROS
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******************************************************************************
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*/
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/*!
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* this macro evaluates an error variable \a ERR against an error code \a EC.
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* in case it is not equal it jumps to the given label \a LABEL.
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*/
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#define EVAL_ERR_NE_GOTO(EC, ERR, LABEL) \
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if (EC != ERR) goto LABEL;
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/*!
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* this macro evaluates an error variable \a ERR against an error code \a EC.
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* in case it is equal it jumps to the given label \a LABEL.
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*/
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#define EVAL_ERR_EQ_GOTO(EC, ERR, LABEL) \
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if (EC == ERR) goto LABEL;
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#define SIZEOF_ARRAY(a) (sizeof(a) / sizeof(a[0])) /*!< Compute the size of an array */
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#define MAX(a, b) (((a) > (b)) ? (a) : (b)) /*!< Return the maximum of the 2 values */
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#define MIN(a, b) (((a) < (b)) ? (a) : (b)) /*!< Return the minimum of the 2 values */
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#define BITMASK_1 (0x01) /*!< Bit mask for lsb bit */
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#define BITMASK_2 (0x03) /*!< Bit mask for two lsb bits */
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#define BITMASK_3 (0x07) /*!< Bit mask for three lsb bits */
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#define BITMASK_4 (0x0F) /*!< Bit mask for four lsb bits */
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#define U16TOU8(a) ((a) & 0x00FF) /*!< Cast 16-bit unsigned to 8-bit unsigned */
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#define GETU16(a) (uint16_t)((a[0] << 8) | a[1])/*!< Cast two Big Endian 8-bits byte array to 16-bits unsigned */
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#define REVERSE_BYTES(pData, nDataSize) \
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unsigned char swap, *lo = pData, *hi = pData + nDataSize - 1; \
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while (lo < hi) { swap = *lo; *lo++ = *hi; *hi-- = swap; }
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#define ST_MEMMOVE memmove /*!< map memmove to string library code */
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#define ST_MEMCPY memcpy /*!< map memcpy to string library code */
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#define ST_MEMSET memset /*!< map memset to string library code */
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#define ST_BYTECMP memcmp /*!< map bytecmp to string library code */
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#define NO_WARNING(v) ((void) (v)) /*!< Macro to suppress compiler warning */
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#ifndef NULL
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#define NULL (void*)0 /*!< represents a NULL pointer */
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#endif /* !NULL */
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/*
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******************************************************************************
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* GLOBAL FUNCTION PROTOTYPES
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******************************************************************************
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*/
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#endif /* UTILS_H */
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