kopia lustrzana https://github.com/pjalocha/esp32-ogn-tracker
110 wiersze
2.8 KiB
C
110 wiersze
2.8 KiB
C
/*
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/ _____) _ | |
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( (____ _____ ____ _| |_ _____ ____| |__
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\____ \| ___ | (_ _) ___ |/ ___) _ \
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_____) ) ____| | | || |_| ____( (___| | | |
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(______/|_____)_|_|_| \__)_____)\____)_| |_|
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(C)2013 Semtech
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Description: Helper functions implementation
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License: Revised BSD License, see LICENSE.TXT file include in the project
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Maintainer: Miguel Luis and Gregory Cristian
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*/
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#ifndef __UTILITIES_H__
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#define __UTILITIES_H__
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C"{
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#endif
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/*!
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* \brief Returns the minimum value between a and b
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*
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* \param [IN] a 1st value
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* \param [IN] b 2nd value
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* \retval minValue Minimum value
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*/
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#define MIN( a, b ) ( ( ( a ) < ( b ) ) ? ( a ) : ( b ) )
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/*!
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* \brief Returns the maximum value between a and b
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*
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* \param [IN] a 1st value
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* \param [IN] b 2nd value
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* \retval maxValue Maximum value
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*/
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#define MAX( a, b ) ( ( ( a ) > ( b ) ) ? ( a ) : ( b ) )
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/*!
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* \brief Returns 2 raised to the power of n
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*
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* \param [IN] n power value
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* \retval result of raising 2 to the power n
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*/
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#define POW2( n ) ( 1 << n )
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/*!
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* \brief Initializes the pseudo random generator initial value
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*
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* \param [IN] seed Pseudo random generator initial value
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*/
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void srand1( uint32_t seed );
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/*!
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* \brief Computes a random number between min and max
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*
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* \param [IN] min range minimum value
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* \param [IN] max range maximum value
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* \retval random random value in range min..max
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*/
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int32_t randr( int32_t min, int32_t max );
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/*!
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* \brief Copies size elements of src array to dst array
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*
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* \remark STM32 Standard memcpy function only works on pointers that are aligned
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*
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* \param [OUT] dst Destination array
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* \param [IN] src Source array
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* \param [IN] size Number of bytes to be copied
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*/
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void memcpy1( uint8_t *dst, const uint8_t *src, uint16_t size );
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/*!
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* \brief Copies size elements of src array to dst array reversing the byte order
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*
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* \param [OUT] dst Destination array
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* \param [IN] src Source array
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* \param [IN] size Number of bytes to be copied
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*/
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void memcpyr( uint8_t *dst, const uint8_t *src, uint16_t size );
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/*!
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* \brief Set size elements of dst array with value
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*
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* \remark STM32 Standard memset function only works on pointers that are aligned
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*
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* \param [OUT] dst Destination array
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* \param [IN] value Default value
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* \param [IN] size Number of bytes to be copied
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*/
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void memset1( uint8_t *dst, uint8_t value, uint16_t size );
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/*!
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* \brief Converts a nibble to an hexadecimal character
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*
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* \param [IN] a Nibble to be converted
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* \retval hexChar Converted hexadecimal character
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*/
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int8_t Nibble2HexChar( uint8_t a );
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // __UTILITIES_H__
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