RUBEN ELISEO VAZQUEZ / Mbed 2 deprecated ds1302-bluetooth

the program have one sensor acs712 and moduleds1302

Dependencies:   FATFileSystem mbed

rtx/TARGET_ARM7/rt_MemBox.c@0:b82abca089ac, 2017-06-08 (annotated)

Committer:
RUBENTEC
Date:
Thu Jun 08 20:17:34 2017 +0000
Revision:
0:b82abca089ac
ds1302-bluetooth-acs712

Who changed what in which revision?

UserRevisionLine numberNew contents of line
RUBENTEC 0:b82abca089ac 1 /*----------------------------------------------------------------------------
RUBENTEC 0:b82abca089ac 2 * RL-ARM - RTX
RUBENTEC 0:b82abca089ac 3 *----------------------------------------------------------------------------
RUBENTEC 0:b82abca089ac 4 * Name: RT_MEMBOX.C
RUBENTEC 0:b82abca089ac 5 * Purpose: Interface functions for fixed memory block management system
RUBENTEC 0:b82abca089ac 6 * Rev.: V4.60
RUBENTEC 0:b82abca089ac 7 *----------------------------------------------------------------------------
RUBENTEC 0:b82abca089ac 8 *
RUBENTEC 0:b82abca089ac 9 * Copyright (c) 1999-2009 KEIL, 2009-2015 ARM Germany GmbH
RUBENTEC 0:b82abca089ac 10 * All rights reserved.
RUBENTEC 0:b82abca089ac 11 * Redistribution and use in source and binary forms, with or without
RUBENTEC 0:b82abca089ac 12 * modification, are permitted provided that the following conditions are met:
RUBENTEC 0:b82abca089ac 13 * - Redistributions of source code must retain the above copyright
RUBENTEC 0:b82abca089ac 14 * notice, this list of conditions and the following disclaimer.
RUBENTEC 0:b82abca089ac 15 * - Redistributions in binary form must reproduce the above copyright
RUBENTEC 0:b82abca089ac 16 * notice, this list of conditions and the following disclaimer in the
RUBENTEC 0:b82abca089ac 17 * documentation and/or other materials provided with the distribution.
RUBENTEC 0:b82abca089ac 18 * - Neither the name of ARM nor the names of its contributors may be used
RUBENTEC 0:b82abca089ac 19 * to endorse or promote products derived from this software without
RUBENTEC 0:b82abca089ac 20 * specific prior written permission.
RUBENTEC 0:b82abca089ac 21 *
RUBENTEC 0:b82abca089ac 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
RUBENTEC 0:b82abca089ac 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
RUBENTEC 0:b82abca089ac 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
RUBENTEC 0:b82abca089ac 25 * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
RUBENTEC 0:b82abca089ac 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
RUBENTEC 0:b82abca089ac 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
RUBENTEC 0:b82abca089ac 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
RUBENTEC 0:b82abca089ac 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
RUBENTEC 0:b82abca089ac 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
RUBENTEC 0:b82abca089ac 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
RUBENTEC 0:b82abca089ac 32 * POSSIBILITY OF SUCH DAMAGE.
RUBENTEC 0:b82abca089ac 33 *---------------------------------------------------------------------------*/
RUBENTEC 0:b82abca089ac 34
RUBENTEC 0:b82abca089ac 35 #include "rt_TypeDef.h"
RUBENTEC 0:b82abca089ac 36 #include "RTX_Conf.h"
RUBENTEC 0:b82abca089ac 37 #include "rt_System.h"
RUBENTEC 0:b82abca089ac 38 #include "rt_MemBox.h"
RUBENTEC 0:b82abca089ac 39 #include "rt_HAL_CM.h"
RUBENTEC 0:b82abca089ac 40
RUBENTEC 0:b82abca089ac 41 /*----------------------------------------------------------------------------
RUBENTEC 0:b82abca089ac 42 * Global Functions
RUBENTEC 0:b82abca089ac 43 *---------------------------------------------------------------------------*/
RUBENTEC 0:b82abca089ac 44
RUBENTEC 0:b82abca089ac 45
RUBENTEC 0:b82abca089ac 46 /*--------------------------- _init_box -------------------------------------*/
RUBENTEC 0:b82abca089ac 47
RUBENTEC 0:b82abca089ac 48 int _init_box (void *box_mem, U32 box_size, U32 blk_size) {
RUBENTEC 0:b82abca089ac 49 /* Initialize memory block system, returns 0 if OK, 1 if fails. */
RUBENTEC 0:b82abca089ac 50 void *end;
RUBENTEC 0:b82abca089ac 51 void *blk;
RUBENTEC 0:b82abca089ac 52 void *next;
RUBENTEC 0:b82abca089ac 53 U32 sizeof_bm;
RUBENTEC 0:b82abca089ac 54
RUBENTEC 0:b82abca089ac 55 /* Create memory structure. */
RUBENTEC 0:b82abca089ac 56 if (blk_size & BOX_ALIGN_8) {
RUBENTEC 0:b82abca089ac 57 /* Memory blocks 8-byte aligned. */
RUBENTEC 0:b82abca089ac 58 blk_size = ((blk_size & ~BOX_ALIGN_8) + 7) & ~7;
RUBENTEC 0:b82abca089ac 59 sizeof_bm = (sizeof (struct OS_BM) + 7) & ~7;
RUBENTEC 0:b82abca089ac 60 }
RUBENTEC 0:b82abca089ac 61 else {
RUBENTEC 0:b82abca089ac 62 /* Memory blocks 4-byte aligned. */
RUBENTEC 0:b82abca089ac 63 blk_size = (blk_size + 3) & ~3;
RUBENTEC 0:b82abca089ac 64 sizeof_bm = sizeof (struct OS_BM);
RUBENTEC 0:b82abca089ac 65 }
RUBENTEC 0:b82abca089ac 66 if (blk_size == 0) {
RUBENTEC 0:b82abca089ac 67 return (1);
RUBENTEC 0:b82abca089ac 68 }
RUBENTEC 0:b82abca089ac 69 if ((blk_size + sizeof_bm) > box_size) {
RUBENTEC 0:b82abca089ac 70 return (1);
RUBENTEC 0:b82abca089ac 71 }
RUBENTEC 0:b82abca089ac 72 /* Create a Memory structure. */
RUBENTEC 0:b82abca089ac 73 blk = ((U8 *) box_mem) + sizeof_bm;
RUBENTEC 0:b82abca089ac 74 ((P_BM) box_mem)->free = blk;
RUBENTEC 0:b82abca089ac 75 end = ((U8 *) box_mem) + box_size;
RUBENTEC 0:b82abca089ac 76 ((P_BM) box_mem)->end = end;
RUBENTEC 0:b82abca089ac 77 ((P_BM) box_mem)->blk_size = blk_size;
RUBENTEC 0:b82abca089ac 78
RUBENTEC 0:b82abca089ac 79 /* Link all free blocks using offsets. */
RUBENTEC 0:b82abca089ac 80 end = ((U8 *) end) - blk_size;
RUBENTEC 0:b82abca089ac 81 while (1) {
RUBENTEC 0:b82abca089ac 82 next = ((U8 *) blk) + blk_size;
RUBENTEC 0:b82abca089ac 83 if (next > end) break;
RUBENTEC 0:b82abca089ac 84 *((void **)blk) = next;
RUBENTEC 0:b82abca089ac 85 blk = next;
RUBENTEC 0:b82abca089ac 86 }
RUBENTEC 0:b82abca089ac 87 /* end marker */
RUBENTEC 0:b82abca089ac 88 *((void **)blk) = 0;
RUBENTEC 0:b82abca089ac 89 return (0);
RUBENTEC 0:b82abca089ac 90 }
RUBENTEC 0:b82abca089ac 91
RUBENTEC 0:b82abca089ac 92 /*--------------------------- rt_alloc_box ----------------------------------*/
RUBENTEC 0:b82abca089ac 93
RUBENTEC 0:b82abca089ac 94 void *rt_alloc_box (void *box_mem) {
RUBENTEC 0:b82abca089ac 95 /* Allocate a memory block and return start address. */
RUBENTEC 0:b82abca089ac 96 void **free;
RUBENTEC 0:b82abca089ac 97 #ifndef __USE_EXCLUSIVE_ACCESS
RUBENTEC 0:b82abca089ac 98 int irq_dis;
RUBENTEC 0:b82abca089ac 99
RUBENTEC 0:b82abca089ac 100 irq_dis = __disable_irq ();
RUBENTEC 0:b82abca089ac 101 free = ((P_BM) box_mem)->free;
RUBENTEC 0:b82abca089ac 102 if (free) {
RUBENTEC 0:b82abca089ac 103 ((P_BM) box_mem)->free = *free;
RUBENTEC 0:b82abca089ac 104 }
RUBENTEC 0:b82abca089ac 105 if (!irq_dis) __enable_irq ();
RUBENTEC 0:b82abca089ac 106 #else
RUBENTEC 0:b82abca089ac 107 do {
RUBENTEC 0:b82abca089ac 108 if ((free = (void **)__ldrex(&((P_BM) box_mem)->free)) == 0) {
RUBENTEC 0:b82abca089ac 109 __clrex();
RUBENTEC 0:b82abca089ac 110 break;
RUBENTEC 0:b82abca089ac 111 }
RUBENTEC 0:b82abca089ac 112 } while (__strex((U32)*free, &((P_BM) box_mem)->free));
RUBENTEC 0:b82abca089ac 113 #endif
RUBENTEC 0:b82abca089ac 114 return (free);
RUBENTEC 0:b82abca089ac 115 }
RUBENTEC 0:b82abca089ac 116
RUBENTEC 0:b82abca089ac 117
RUBENTEC 0:b82abca089ac 118 /*--------------------------- _calloc_box -----------------------------------*/
RUBENTEC 0:b82abca089ac 119
RUBENTEC 0:b82abca089ac 120 void *_calloc_box (void *box_mem) {
RUBENTEC 0:b82abca089ac 121 /* Allocate a 0-initialized memory block and return start address. */
RUBENTEC 0:b82abca089ac 122 void *free;
RUBENTEC 0:b82abca089ac 123 U32 *p;
RUBENTEC 0:b82abca089ac 124 U32 i;
RUBENTEC 0:b82abca089ac 125
RUBENTEC 0:b82abca089ac 126 free = _alloc_box (box_mem);
RUBENTEC 0:b82abca089ac 127 if (free) {
RUBENTEC 0:b82abca089ac 128 p = free;
RUBENTEC 0:b82abca089ac 129 for (i = ((P_BM) box_mem)->blk_size; i; i -= 4) {
RUBENTEC 0:b82abca089ac 130 *p = 0;
RUBENTEC 0:b82abca089ac 131 p++;
RUBENTEC 0:b82abca089ac 132 }
RUBENTEC 0:b82abca089ac 133 }
RUBENTEC 0:b82abca089ac 134 return (free);
RUBENTEC 0:b82abca089ac 135 }
RUBENTEC 0:b82abca089ac 136
RUBENTEC 0:b82abca089ac 137
RUBENTEC 0:b82abca089ac 138 /*--------------------------- rt_free_box -----------------------------------*/
RUBENTEC 0:b82abca089ac 139
RUBENTEC 0:b82abca089ac 140 int rt_free_box (void *box_mem, void *box) {
RUBENTEC 0:b82abca089ac 141 /* Free a memory block, returns 0 if OK, 1 if box does not belong to box_mem */
RUBENTEC 0:b82abca089ac 142 #ifndef __USE_EXCLUSIVE_ACCESS
RUBENTEC 0:b82abca089ac 143 int irq_dis;
RUBENTEC 0:b82abca089ac 144 #endif
RUBENTEC 0:b82abca089ac 145
RUBENTEC 0:b82abca089ac 146 if (box < box_mem || box >= ((P_BM) box_mem)->end) {
RUBENTEC 0:b82abca089ac 147 return (1);
RUBENTEC 0:b82abca089ac 148 }
RUBENTEC 0:b82abca089ac 149
RUBENTEC 0:b82abca089ac 150 #ifndef __USE_EXCLUSIVE_ACCESS
RUBENTEC 0:b82abca089ac 151 irq_dis = __disable_irq ();
RUBENTEC 0:b82abca089ac 152 *((void **)box) = ((P_BM) box_mem)->free;
RUBENTEC 0:b82abca089ac 153 ((P_BM) box_mem)->free = box;
RUBENTEC 0:b82abca089ac 154 if (!irq_dis) __enable_irq ();
RUBENTEC 0:b82abca089ac 155 #else
RUBENTEC 0:b82abca089ac 156 do {
RUBENTEC 0:b82abca089ac 157 *((void **)box) = (void *)__ldrex(&((P_BM) box_mem)->free);
RUBENTEC 0:b82abca089ac 158 } while (__strex ((U32)box, &((P_BM) box_mem)->free));
RUBENTEC 0:b82abca089ac 159 #endif
RUBENTEC 0:b82abca089ac 160 return (0);
RUBENTEC 0:b82abca089ac 161 }
RUBENTEC 0:b82abca089ac 162
RUBENTEC 0:b82abca089ac 163 /*----------------------------------------------------------------------------
RUBENTEC 0:b82abca089ac 164 * end of file
RUBENTEC 0:b82abca089ac 165 *---------------------------------------------------------------------------*/
RUBENTEC 0:b82abca089ac 166