esp32-ogn-tracker/main/cmacutil.h

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2.8 KiB
C
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2020-10-08 01:30:52 +00:00
/*
/ _____) _ | |
( (____ _____ ____ _| |_ _____ ____| |__
\____ \| ___ | (_ _) ___ |/ ___) _ \
_____) ) ____| | | || |_| ____( (___| | | |
(______/|_____)_|_|_| \__)_____)\____)_| |_|
(C)2013 Semtech
Description: Helper functions implementation
License: Revised BSD License, see LICENSE.TXT file include in the project
Maintainer: Miguel Luis and Gregory Cristian
*/
#ifndef __UTILITIES_H__
#define __UTILITIES_H__
#include <stdint.h>
#ifdef __cplusplus
extern "C"{
#endif
/*!
* \brief Returns the minimum value between a and b
*
* \param [IN] a 1st value
* \param [IN] b 2nd value
* \retval minValue Minimum value
*/
#define MIN( a, b ) ( ( ( a ) < ( b ) ) ? ( a ) : ( b ) )
/*!
* \brief Returns the maximum value between a and b
*
* \param [IN] a 1st value
* \param [IN] b 2nd value
* \retval maxValue Maximum value
*/
#define MAX( a, b ) ( ( ( a ) > ( b ) ) ? ( a ) : ( b ) )
/*!
* \brief Returns 2 raised to the power of n
*
* \param [IN] n power value
* \retval result of raising 2 to the power n
*/
#define POW2( n ) ( 1 << n )
/*!
* \brief Initializes the pseudo random generator initial value
*
* \param [IN] seed Pseudo random generator initial value
*/
void srand1( uint32_t seed );
/*!
* \brief Computes a random number between min and max
*
* \param [IN] min range minimum value
* \param [IN] max range maximum value
* \retval random random value in range min..max
*/
int32_t randr( int32_t min, int32_t max );
/*!
* \brief Copies size elements of src array to dst array
*
* \remark STM32 Standard memcpy function only works on pointers that are aligned
*
* \param [OUT] dst Destination array
* \param [IN] src Source array
* \param [IN] size Number of bytes to be copied
*/
void memcpy1( uint8_t *dst, const uint8_t *src, uint16_t size );
/*!
* \brief Copies size elements of src array to dst array reversing the byte order
*
* \param [OUT] dst Destination array
* \param [IN] src Source array
* \param [IN] size Number of bytes to be copied
*/
void memcpyr( uint8_t *dst, const uint8_t *src, uint16_t size );
/*!
* \brief Set size elements of dst array with value
*
* \remark STM32 Standard memset function only works on pointers that are aligned
*
* \param [OUT] dst Destination array
* \param [IN] value Default value
* \param [IN] size Number of bytes to be copied
*/
void memset1( uint8_t *dst, uint8_t value, uint16_t size );
/*!
* \brief Converts a nibble to an hexadecimal character
*
* \param [IN] a Nibble to be converted
* \retval hexChar Converted hexadecimal character
*/
int8_t Nibble2HexChar( uint8_t a );
#ifdef __cplusplus
} // extern "C"
#endif
#endif // __UTILITIES_H__