Diff: utilities.h

Revision:

0:a0c5877bd360

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/utilities.h	Thu Jul 12 00:50:48 2018 +0000
@@ -0,0 +1,186 @@
+/*
+ / _____)             _              | |
+( (____  _____ ____ _| |_ _____  ____| |__
+ \____ \| ___ |    (_   _) ___ |/ ___)  _ \
+ _____) ) ____| | | || |_| ____( (___| | | |
+(______/|_____)_|_|_| \__)_____)\____)_| |_|
+    (C)2013 Semtech
+
+  _    _            _____   _______
+ | |  | |          |_   _| |__   __|
+ | |__| | __ ___  __ | |  ___ | |
+ |  __  |/ _` \ \/ / | | / _ \| |
+ | |  | | (_| |>  < _| || (_) | |
+ |_|  |_|\__,_/_/\_\_____\___/|_|
+    (C)2017 HaxIoT
+
+Description: Helper functions implementation
+
+License: Revised BSD License, see LICENSE.TXT file include in the project
+
+Maintainer: Miguel Luis and Gregory Cristian
+            Fahad Mirza (Haxiot)
+*/
+ /******************************************************************************
+  * @file    utilities.h
+  * @author  MCD Application Team
+  * @version V1.1.4
+  * @date    08-January-2018
+  * @brief   Header for driver utilities.c module
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; Copyright (c) 2017 STMicroelectronics International N.V. 
+  * All rights reserved.</center></h2>
+  *
+  * Redistribution and use in source and binary forms, with or without 
+  * modification, are permitted, provided that the following conditions are met:
+  *
+  * 1. Redistribution of source code must retain the above copyright notice, 
+  *    this list of conditions and the following disclaimer.
+  * 2. Redistributions in binary form must reproduce the above copyright notice,
+  *    this list of conditions and the following disclaimer in the documentation
+  *    and/or other materials provided with the distribution.
+  * 3. Neither the name of STMicroelectronics nor the names of other 
+  *    contributors to this software may be used to endorse or promote products 
+  *    derived from this software without specific written permission.
+  * 4. This software, including modifications and/or derivative works of this 
+  *    software, must execute solely and exclusively on microcontroller or
+  *    microprocessor devices manufactured by or for STMicroelectronics.
+  * 5. Redistribution and use of this software other than as permitted under 
+  *    this license is void and will automatically terminate your rights under 
+  *    this license. 
+  *
+  * THIS SOFTWARE IS PROVIDED BY STMICROELECTRONICS AND CONTRIBUTORS "AS IS" 
+  * AND ANY EXPRESS, IMPLIED OR STATUTORY WARRANTIES, INCLUDING, BUT NOT 
+  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A 
+  * PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY
+  * RIGHTS ARE DISCLAIMED TO THE FULLEST EXTENT PERMITTED BY LAW. IN NO EVENT 
+  * SHALL STMICROELECTRONICS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
+  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 
+  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
+  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+  *
+  ******************************************************************************
+  */
+#ifndef __UTILITIES_H__
+#define __UTILITIES_H__
+
+#include "stm32l0xx_hal.h"
+
+
+/* BACKUP_PRIMASK MUST be implemented at the beginning of the function
+ * that implement a critical section.
+ * PRIMASK is saved on STACK and recovered at the end of the function.
+ * That way RESTORE_PRIMASK ensures that no irq would be triggered in case of
+ * unbalanced enable/disable, reentrant code etc.
+ */
+#define BACKUP_PRIMASK()  uint32_t primask_bit= __get_PRIMASK()
+#define DISABLE_IRQ() __disable_irq()
+#define ENABLE_IRQ() __enable_irq()
+#define RESTORE_PRIMASK() __set_PRIMASK(primask_bit)
+
+/* prepocessor directive to align buffer*/
+#define ALIGN(n)             __attribute__((aligned(n)))
+
+/*!
+ * \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  Find First Set
+ *         This function identifies the least significant index or position of the
+ *         bits set to one in the word
+ *
+ * \param [in]  value  Value to find least significant index
+ * \retval bitIndex    Index of least significat bit at one
+ */
+__STATIC_INLINE uint8_t __ffs( uint32_t value )
+{
+    return( uint32_t )( 32 - __CLZ( value & ( -value ) ) );
+}
+
+/*!
+ * \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 );
+
+uint8_t stringHexToByteArray(const char *hexString, uint8_t *buffer, int8_t bufSize);
+
+#endif // __UTILITIES_H__
+