![](/media/cache/img/default_profile.jpg.50x50_q85.jpg)
ProjetoBB
Dependencies: F7_Ethernet WebSocketClient mbed mcp3008
Fork of Nucleo_F746ZG_Ethernet by
mbed-rtos/rtx/TARGET_CORTEX_M/rt_MemBox.c@0:f9b6112278fe, 2016-06-18 (annotated)
- Committer:
- DieterGraef
- Date:
- Sat Jun 18 10:49:12 2016 +0000
- Revision:
- 0:f9b6112278fe
Ethernet for the NUCLEO STM32F746 Board Testprogram uses DHCP and NTP to set the clock
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
DieterGraef | 0:f9b6112278fe | 1 | /*---------------------------------------------------------------------------- |
DieterGraef | 0:f9b6112278fe | 2 | * CMSIS-RTOS - RTX |
DieterGraef | 0:f9b6112278fe | 3 | *---------------------------------------------------------------------------- |
DieterGraef | 0:f9b6112278fe | 4 | * Name: RT_MEMBOX.C |
DieterGraef | 0:f9b6112278fe | 5 | * Purpose: Interface functions for fixed memory block management system |
DieterGraef | 0:f9b6112278fe | 6 | * Rev.: V4.79 |
DieterGraef | 0:f9b6112278fe | 7 | *---------------------------------------------------------------------------- |
DieterGraef | 0:f9b6112278fe | 8 | * |
DieterGraef | 0:f9b6112278fe | 9 | * Copyright (c) 1999-2009 KEIL, 2009-2015 ARM Germany GmbH |
DieterGraef | 0:f9b6112278fe | 10 | * All rights reserved. |
DieterGraef | 0:f9b6112278fe | 11 | * Redistribution and use in source and binary forms, with or without |
DieterGraef | 0:f9b6112278fe | 12 | * modification, are permitted provided that the following conditions are met: |
DieterGraef | 0:f9b6112278fe | 13 | * - Redistributions of source code must retain the above copyright |
DieterGraef | 0:f9b6112278fe | 14 | * notice, this list of conditions and the following disclaimer. |
DieterGraef | 0:f9b6112278fe | 15 | * - Redistributions in binary form must reproduce the above copyright |
DieterGraef | 0:f9b6112278fe | 16 | * notice, this list of conditions and the following disclaimer in the |
DieterGraef | 0:f9b6112278fe | 17 | * documentation and/or other materials provided with the distribution. |
DieterGraef | 0:f9b6112278fe | 18 | * - Neither the name of ARM nor the names of its contributors may be used |
DieterGraef | 0:f9b6112278fe | 19 | * to endorse or promote products derived from this software without |
DieterGraef | 0:f9b6112278fe | 20 | * specific prior written permission. |
DieterGraef | 0:f9b6112278fe | 21 | * |
DieterGraef | 0:f9b6112278fe | 22 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
DieterGraef | 0:f9b6112278fe | 23 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
DieterGraef | 0:f9b6112278fe | 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
DieterGraef | 0:f9b6112278fe | 25 | * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE |
DieterGraef | 0:f9b6112278fe | 26 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
DieterGraef | 0:f9b6112278fe | 27 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
DieterGraef | 0:f9b6112278fe | 28 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
DieterGraef | 0:f9b6112278fe | 29 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
DieterGraef | 0:f9b6112278fe | 30 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
DieterGraef | 0:f9b6112278fe | 31 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
DieterGraef | 0:f9b6112278fe | 32 | * POSSIBILITY OF SUCH DAMAGE. |
DieterGraef | 0:f9b6112278fe | 33 | *---------------------------------------------------------------------------*/ |
DieterGraef | 0:f9b6112278fe | 34 | |
DieterGraef | 0:f9b6112278fe | 35 | #include "rt_TypeDef.h" |
DieterGraef | 0:f9b6112278fe | 36 | #include "RTX_Config.h" |
DieterGraef | 0:f9b6112278fe | 37 | #include "rt_System.h" |
DieterGraef | 0:f9b6112278fe | 38 | #include "rt_MemBox.h" |
DieterGraef | 0:f9b6112278fe | 39 | #include "rt_HAL_CM.h" |
DieterGraef | 0:f9b6112278fe | 40 | |
DieterGraef | 0:f9b6112278fe | 41 | /*---------------------------------------------------------------------------- |
DieterGraef | 0:f9b6112278fe | 42 | * Global Functions |
DieterGraef | 0:f9b6112278fe | 43 | *---------------------------------------------------------------------------*/ |
DieterGraef | 0:f9b6112278fe | 44 | |
DieterGraef | 0:f9b6112278fe | 45 | |
DieterGraef | 0:f9b6112278fe | 46 | /*--------------------------- _init_box -------------------------------------*/ |
DieterGraef | 0:f9b6112278fe | 47 | |
DieterGraef | 0:f9b6112278fe | 48 | U32 _init_box (void *box_mem, U32 box_size, U32 blk_size) { |
DieterGraef | 0:f9b6112278fe | 49 | /* Initialize memory block system, returns 0 if OK, 1 if fails. */ |
DieterGraef | 0:f9b6112278fe | 50 | void *end; |
DieterGraef | 0:f9b6112278fe | 51 | void *blk; |
DieterGraef | 0:f9b6112278fe | 52 | void *next; |
DieterGraef | 0:f9b6112278fe | 53 | U32 sizeof_bm; |
DieterGraef | 0:f9b6112278fe | 54 | |
DieterGraef | 0:f9b6112278fe | 55 | /* Create memory structure. */ |
DieterGraef | 0:f9b6112278fe | 56 | if (blk_size & BOX_ALIGN_8) { |
DieterGraef | 0:f9b6112278fe | 57 | /* Memory blocks 8-byte aligned. */ |
DieterGraef | 0:f9b6112278fe | 58 | blk_size = ((blk_size & ~BOX_ALIGN_8) + 7U) & ~(U32)7U; |
DieterGraef | 0:f9b6112278fe | 59 | sizeof_bm = (sizeof (struct OS_BM) + 7U) & ~(U32)7U; |
DieterGraef | 0:f9b6112278fe | 60 | } |
DieterGraef | 0:f9b6112278fe | 61 | else { |
DieterGraef | 0:f9b6112278fe | 62 | /* Memory blocks 4-byte aligned. */ |
DieterGraef | 0:f9b6112278fe | 63 | blk_size = (blk_size + 3U) & ~(U32)3U; |
DieterGraef | 0:f9b6112278fe | 64 | sizeof_bm = sizeof (struct OS_BM); |
DieterGraef | 0:f9b6112278fe | 65 | } |
DieterGraef | 0:f9b6112278fe | 66 | if (blk_size == 0U) { |
DieterGraef | 0:f9b6112278fe | 67 | return (1U); |
DieterGraef | 0:f9b6112278fe | 68 | } |
DieterGraef | 0:f9b6112278fe | 69 | if ((blk_size + sizeof_bm) > box_size) { |
DieterGraef | 0:f9b6112278fe | 70 | return (1U); |
DieterGraef | 0:f9b6112278fe | 71 | } |
DieterGraef | 0:f9b6112278fe | 72 | /* Create a Memory structure. */ |
DieterGraef | 0:f9b6112278fe | 73 | blk = ((U8 *) box_mem) + sizeof_bm; |
DieterGraef | 0:f9b6112278fe | 74 | ((P_BM) box_mem)->free = blk; |
DieterGraef | 0:f9b6112278fe | 75 | end = ((U8 *) box_mem) + box_size; |
DieterGraef | 0:f9b6112278fe | 76 | ((P_BM) box_mem)->end = end; |
DieterGraef | 0:f9b6112278fe | 77 | ((P_BM) box_mem)->blk_size = blk_size; |
DieterGraef | 0:f9b6112278fe | 78 | |
DieterGraef | 0:f9b6112278fe | 79 | /* Link all free blocks using offsets. */ |
DieterGraef | 0:f9b6112278fe | 80 | end = ((U8 *) end) - blk_size; |
DieterGraef | 0:f9b6112278fe | 81 | while (1) { |
DieterGraef | 0:f9b6112278fe | 82 | next = ((U8 *) blk) + blk_size; |
DieterGraef | 0:f9b6112278fe | 83 | if (next > end) { break; } |
DieterGraef | 0:f9b6112278fe | 84 | *((void **)blk) = next; |
DieterGraef | 0:f9b6112278fe | 85 | blk = next; |
DieterGraef | 0:f9b6112278fe | 86 | } |
DieterGraef | 0:f9b6112278fe | 87 | /* end marker */ |
DieterGraef | 0:f9b6112278fe | 88 | *((void **)blk) = 0U; |
DieterGraef | 0:f9b6112278fe | 89 | return (0U); |
DieterGraef | 0:f9b6112278fe | 90 | } |
DieterGraef | 0:f9b6112278fe | 91 | |
DieterGraef | 0:f9b6112278fe | 92 | /*--------------------------- rt_alloc_box ----------------------------------*/ |
DieterGraef | 0:f9b6112278fe | 93 | |
DieterGraef | 0:f9b6112278fe | 94 | void *rt_alloc_box (void *box_mem) { |
DieterGraef | 0:f9b6112278fe | 95 | /* Allocate a memory block and return start address. */ |
DieterGraef | 0:f9b6112278fe | 96 | void **free; |
DieterGraef | 0:f9b6112278fe | 97 | #ifndef __USE_EXCLUSIVE_ACCESS |
DieterGraef | 0:f9b6112278fe | 98 | U32 irq_mask; |
DieterGraef | 0:f9b6112278fe | 99 | |
DieterGraef | 0:f9b6112278fe | 100 | irq_mask = (U32)__disable_irq (); |
DieterGraef | 0:f9b6112278fe | 101 | free = ((P_BM) box_mem)->free; |
DieterGraef | 0:f9b6112278fe | 102 | if (free) { |
DieterGraef | 0:f9b6112278fe | 103 | ((P_BM) box_mem)->free = *free; |
DieterGraef | 0:f9b6112278fe | 104 | } |
DieterGraef | 0:f9b6112278fe | 105 | if (irq_mask == 0U) { __enable_irq (); } |
DieterGraef | 0:f9b6112278fe | 106 | #else |
DieterGraef | 0:f9b6112278fe | 107 | do { |
DieterGraef | 0:f9b6112278fe | 108 | if ((free = (void **)__ldrex(&((P_BM) box_mem)->free)) == 0U) { |
DieterGraef | 0:f9b6112278fe | 109 | __clrex(); |
DieterGraef | 0:f9b6112278fe | 110 | break; |
DieterGraef | 0:f9b6112278fe | 111 | } |
DieterGraef | 0:f9b6112278fe | 112 | } while (__strex((U32)*free, &((P_BM) box_mem)->free)); |
DieterGraef | 0:f9b6112278fe | 113 | #endif |
DieterGraef | 0:f9b6112278fe | 114 | return (free); |
DieterGraef | 0:f9b6112278fe | 115 | } |
DieterGraef | 0:f9b6112278fe | 116 | |
DieterGraef | 0:f9b6112278fe | 117 | |
DieterGraef | 0:f9b6112278fe | 118 | /*--------------------------- _calloc_box -----------------------------------*/ |
DieterGraef | 0:f9b6112278fe | 119 | |
DieterGraef | 0:f9b6112278fe | 120 | void *_calloc_box (void *box_mem) { |
DieterGraef | 0:f9b6112278fe | 121 | /* Allocate a 0-initialized memory block and return start address. */ |
DieterGraef | 0:f9b6112278fe | 122 | void *free; |
DieterGraef | 0:f9b6112278fe | 123 | U32 *p; |
DieterGraef | 0:f9b6112278fe | 124 | U32 i; |
DieterGraef | 0:f9b6112278fe | 125 | |
DieterGraef | 0:f9b6112278fe | 126 | free = _alloc_box (box_mem); |
DieterGraef | 0:f9b6112278fe | 127 | if (free) { |
DieterGraef | 0:f9b6112278fe | 128 | p = free; |
DieterGraef | 0:f9b6112278fe | 129 | for (i = ((P_BM) box_mem)->blk_size; i; i -= 4U) { |
DieterGraef | 0:f9b6112278fe | 130 | *p = 0U; |
DieterGraef | 0:f9b6112278fe | 131 | p++; |
DieterGraef | 0:f9b6112278fe | 132 | } |
DieterGraef | 0:f9b6112278fe | 133 | } |
DieterGraef | 0:f9b6112278fe | 134 | return (free); |
DieterGraef | 0:f9b6112278fe | 135 | } |
DieterGraef | 0:f9b6112278fe | 136 | |
DieterGraef | 0:f9b6112278fe | 137 | |
DieterGraef | 0:f9b6112278fe | 138 | /*--------------------------- rt_free_box -----------------------------------*/ |
DieterGraef | 0:f9b6112278fe | 139 | |
DieterGraef | 0:f9b6112278fe | 140 | U32 rt_free_box (void *box_mem, void *box) { |
DieterGraef | 0:f9b6112278fe | 141 | /* Free a memory block, returns 0 if OK, 1 if box does not belong to box_mem */ |
DieterGraef | 0:f9b6112278fe | 142 | #ifndef __USE_EXCLUSIVE_ACCESS |
DieterGraef | 0:f9b6112278fe | 143 | U32 irq_mask; |
DieterGraef | 0:f9b6112278fe | 144 | #endif |
DieterGraef | 0:f9b6112278fe | 145 | |
DieterGraef | 0:f9b6112278fe | 146 | if ((box < box_mem) || (box >= ((P_BM) box_mem)->end)) { |
DieterGraef | 0:f9b6112278fe | 147 | return (1U); |
DieterGraef | 0:f9b6112278fe | 148 | } |
DieterGraef | 0:f9b6112278fe | 149 | |
DieterGraef | 0:f9b6112278fe | 150 | #ifndef __USE_EXCLUSIVE_ACCESS |
DieterGraef | 0:f9b6112278fe | 151 | irq_mask = (U32)__disable_irq (); |
DieterGraef | 0:f9b6112278fe | 152 | *((void **)box) = ((P_BM) box_mem)->free; |
DieterGraef | 0:f9b6112278fe | 153 | ((P_BM) box_mem)->free = box; |
DieterGraef | 0:f9b6112278fe | 154 | if (irq_mask == 0U) { __enable_irq (); } |
DieterGraef | 0:f9b6112278fe | 155 | #else |
DieterGraef | 0:f9b6112278fe | 156 | do { |
DieterGraef | 0:f9b6112278fe | 157 | do { |
DieterGraef | 0:f9b6112278fe | 158 | *((void **)box) = ((P_BM) box_mem)->free; |
DieterGraef | 0:f9b6112278fe | 159 | __DMB(); |
DieterGraef | 0:f9b6112278fe | 160 | } while (*(void**)box != (void *)__ldrex(&((P_BM) box_mem)->free)); |
DieterGraef | 0:f9b6112278fe | 161 | } while (__strex ((U32)box, &((P_BM) box_mem)->free)); |
DieterGraef | 0:f9b6112278fe | 162 | #endif |
DieterGraef | 0:f9b6112278fe | 163 | return (0U); |
DieterGraef | 0:f9b6112278fe | 164 | } |
DieterGraef | 0:f9b6112278fe | 165 | |
DieterGraef | 0:f9b6112278fe | 166 | /*---------------------------------------------------------------------------- |
DieterGraef | 0:f9b6112278fe | 167 | * end of file |
DieterGraef | 0:f9b6112278fe | 168 | *---------------------------------------------------------------------------*/ |