CK Sin / Mbed 2 deprecated Ethernetwebsocket

Ethernetwebsoc

Dependencies:   C12832_lcd LM75B WebSocketClient mbed-rtos mbed Socket lwip-eth lwip-sys lwip

mbed-rtos/rtx/HAL_CM.c@0:0ed2a7c7190c, 2013-05-31 (annotated)

Committer:
GordonSin
Date:
Fri May 31 04:09:54 2013 +0000
Revision:
0:0ed2a7c7190c
31/5/2013;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
GordonSin 0:0ed2a7c7190c 1 /*----------------------------------------------------------------------------
GordonSin 0:0ed2a7c7190c 2 * RL-ARM - RTX
GordonSin 0:0ed2a7c7190c 3 *----------------------------------------------------------------------------
GordonSin 0:0ed2a7c7190c 4 * Name: HAL_CM.C
GordonSin 0:0ed2a7c7190c 5 * Purpose: Hardware Abstraction Layer for Cortex-M
GordonSin 0:0ed2a7c7190c 6 * Rev.: V4.50
GordonSin 0:0ed2a7c7190c 7 *----------------------------------------------------------------------------
GordonSin 0:0ed2a7c7190c 8 *
GordonSin 0:0ed2a7c7190c 9 * Copyright (c) 1999-2009 KEIL, 2009-2012 ARM Germany GmbH
GordonSin 0:0ed2a7c7190c 10 * All rights reserved.
GordonSin 0:0ed2a7c7190c 11 * Redistribution and use in source and binary forms, with or without
GordonSin 0:0ed2a7c7190c 12 * modification, are permitted provided that the following conditions are met:
GordonSin 0:0ed2a7c7190c 13 * - Redistributions of source code must retain the above copyright
GordonSin 0:0ed2a7c7190c 14 * notice, this list of conditions and the following disclaimer.
GordonSin 0:0ed2a7c7190c 15 * - Redistributions in binary form must reproduce the above copyright
GordonSin 0:0ed2a7c7190c 16 * notice, this list of conditions and the following disclaimer in the
GordonSin 0:0ed2a7c7190c 17 * documentation and/or other materials provided with the distribution.
GordonSin 0:0ed2a7c7190c 18 * - Neither the name of ARM nor the names of its contributors may be used
GordonSin 0:0ed2a7c7190c 19 * to endorse or promote products derived from this software without
GordonSin 0:0ed2a7c7190c 20 * specific prior written permission.
GordonSin 0:0ed2a7c7190c 21 *
GordonSin 0:0ed2a7c7190c 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
GordonSin 0:0ed2a7c7190c 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
GordonSin 0:0ed2a7c7190c 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
GordonSin 0:0ed2a7c7190c 25 * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
GordonSin 0:0ed2a7c7190c 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
GordonSin 0:0ed2a7c7190c 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
GordonSin 0:0ed2a7c7190c 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
GordonSin 0:0ed2a7c7190c 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
GordonSin 0:0ed2a7c7190c 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
GordonSin 0:0ed2a7c7190c 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
GordonSin 0:0ed2a7c7190c 32 * POSSIBILITY OF SUCH DAMAGE.
GordonSin 0:0ed2a7c7190c 33 *---------------------------------------------------------------------------*/
GordonSin 0:0ed2a7c7190c 34
GordonSin 0:0ed2a7c7190c 35 #include "rt_TypeDef.h"
GordonSin 0:0ed2a7c7190c 36 #include "RTX_Config.h"
GordonSin 0:0ed2a7c7190c 37 #include "rt_HAL_CM.h"
GordonSin 0:0ed2a7c7190c 38
GordonSin 0:0ed2a7c7190c 39
GordonSin 0:0ed2a7c7190c 40 /*----------------------------------------------------------------------------
GordonSin 0:0ed2a7c7190c 41 * Global Variables
GordonSin 0:0ed2a7c7190c 42 *---------------------------------------------------------------------------*/
GordonSin 0:0ed2a7c7190c 43
GordonSin 0:0ed2a7c7190c 44 #ifdef DBG_MSG
GordonSin 0:0ed2a7c7190c 45 BIT dbg_msg;
GordonSin 0:0ed2a7c7190c 46 #endif
GordonSin 0:0ed2a7c7190c 47
GordonSin 0:0ed2a7c7190c 48 /*----------------------------------------------------------------------------
GordonSin 0:0ed2a7c7190c 49 * Functions
GordonSin 0:0ed2a7c7190c 50 *---------------------------------------------------------------------------*/
GordonSin 0:0ed2a7c7190c 51
GordonSin 0:0ed2a7c7190c 52
GordonSin 0:0ed2a7c7190c 53 /*--------------------------- rt_init_stack ---------------------------------*/
GordonSin 0:0ed2a7c7190c 54
GordonSin 0:0ed2a7c7190c 55 void rt_init_stack (P_TCB p_TCB, FUNCP task_body) {
GordonSin 0:0ed2a7c7190c 56 /* Prepare TCB and saved context for a first time start of a task. */
GordonSin 0:0ed2a7c7190c 57 U32 *stk,i,size;
GordonSin 0:0ed2a7c7190c 58
GordonSin 0:0ed2a7c7190c 59 /* Prepare a complete interrupt frame for first task start */
GordonSin 0:0ed2a7c7190c 60 size = p_TCB->priv_stack >> 2;
GordonSin 0:0ed2a7c7190c 61
GordonSin 0:0ed2a7c7190c 62 /* Write to the top of stack. */
GordonSin 0:0ed2a7c7190c 63 stk = &p_TCB->stack[size];
GordonSin 0:0ed2a7c7190c 64
GordonSin 0:0ed2a7c7190c 65 /* Auto correct to 8-byte ARM stack alignment. */
GordonSin 0:0ed2a7c7190c 66 if ((U32)stk & 0x04) {
GordonSin 0:0ed2a7c7190c 67 stk--;
GordonSin 0:0ed2a7c7190c 68 }
GordonSin 0:0ed2a7c7190c 69
GordonSin 0:0ed2a7c7190c 70 stk -= 16;
GordonSin 0:0ed2a7c7190c 71
GordonSin 0:0ed2a7c7190c 72 /* Default xPSR and initial PC */
GordonSin 0:0ed2a7c7190c 73 stk[15] = INITIAL_xPSR;
GordonSin 0:0ed2a7c7190c 74 stk[14] = (U32)task_body;
GordonSin 0:0ed2a7c7190c 75
GordonSin 0:0ed2a7c7190c 76 /* Clear R4-R11,R0-R3,R12,LR registers. */
GordonSin 0:0ed2a7c7190c 77 for (i = 0; i < 14; i++) {
GordonSin 0:0ed2a7c7190c 78 stk[i] = 0;
GordonSin 0:0ed2a7c7190c 79 }
GordonSin 0:0ed2a7c7190c 80
GordonSin 0:0ed2a7c7190c 81 /* Assign a void pointer to R0. */
GordonSin 0:0ed2a7c7190c 82 stk[8] = (U32)p_TCB->msg;
GordonSin 0:0ed2a7c7190c 83
GordonSin 0:0ed2a7c7190c 84 /* Initial Task stack pointer. */
GordonSin 0:0ed2a7c7190c 85 p_TCB->tsk_stack = (U32)stk;
GordonSin 0:0ed2a7c7190c 86
GordonSin 0:0ed2a7c7190c 87 /* Task entry point. */
GordonSin 0:0ed2a7c7190c 88 p_TCB->ptask = task_body;
GordonSin 0:0ed2a7c7190c 89
GordonSin 0:0ed2a7c7190c 90 /* Set a magic word for checking of stack overflow.
GordonSin 0:0ed2a7c7190c 91 For the main thread (ID: 0x01) the stack is in a memory area shared with the
GordonSin 0:0ed2a7c7190c 92 heap, therefore the last word of the stack is a moving target.
GordonSin 0:0ed2a7c7190c 93 We want to do stack/heap collision detection instead.
GordonSin 0:0ed2a7c7190c 94 */
GordonSin 0:0ed2a7c7190c 95 if (p_TCB->task_id != 0x01)
GordonSin 0:0ed2a7c7190c 96 p_TCB->stack[0] = MAGIC_WORD;
GordonSin 0:0ed2a7c7190c 97 }
GordonSin 0:0ed2a7c7190c 98
GordonSin 0:0ed2a7c7190c 99
GordonSin 0:0ed2a7c7190c 100 /*--------------------------- rt_ret_val ----------------------------------*/
GordonSin 0:0ed2a7c7190c 101
GordonSin 0:0ed2a7c7190c 102 static __inline U32 *rt_ret_regs (P_TCB p_TCB) {
GordonSin 0:0ed2a7c7190c 103 /* Get pointer to task return value registers (R0..R3) in Stack */
GordonSin 0:0ed2a7c7190c 104 #if (__TARGET_FPU_VFP)
GordonSin 0:0ed2a7c7190c 105 if (p_TCB->stack_frame) {
GordonSin 0:0ed2a7c7190c 106 /* Extended Stack Frame: R4-R11,S16-S31,R0-R3,R12,LR,PC,xPSR,S0-S15,FPSCR */
GordonSin 0:0ed2a7c7190c 107 return (U32 *)(p_TCB->tsk_stack + 8*4 + 16*4);
GordonSin 0:0ed2a7c7190c 108 } else {
GordonSin 0:0ed2a7c7190c 109 /* Basic Stack Frame: R4-R11,R0-R3,R12,LR,PC,xPSR */
GordonSin 0:0ed2a7c7190c 110 return (U32 *)(p_TCB->tsk_stack + 8*4);
GordonSin 0:0ed2a7c7190c 111 }
GordonSin 0:0ed2a7c7190c 112 #else
GordonSin 0:0ed2a7c7190c 113 /* Stack Frame: R4-R11,R0-R3,R12,LR,PC,xPSR */
GordonSin 0:0ed2a7c7190c 114 return (U32 *)(p_TCB->tsk_stack + 8*4);
GordonSin 0:0ed2a7c7190c 115 #endif
GordonSin 0:0ed2a7c7190c 116 }
GordonSin 0:0ed2a7c7190c 117
GordonSin 0:0ed2a7c7190c 118 void rt_ret_val (P_TCB p_TCB, U32 v0) {
GordonSin 0:0ed2a7c7190c 119 U32 *ret;
GordonSin 0:0ed2a7c7190c 120
GordonSin 0:0ed2a7c7190c 121 ret = rt_ret_regs(p_TCB);
GordonSin 0:0ed2a7c7190c 122 ret[0] = v0;
GordonSin 0:0ed2a7c7190c 123 }
GordonSin 0:0ed2a7c7190c 124
GordonSin 0:0ed2a7c7190c 125 void rt_ret_val2(P_TCB p_TCB, U32 v0, U32 v1) {
GordonSin 0:0ed2a7c7190c 126 U32 *ret;
GordonSin 0:0ed2a7c7190c 127
GordonSin 0:0ed2a7c7190c 128 ret = rt_ret_regs(p_TCB);
GordonSin 0:0ed2a7c7190c 129 ret[0] = v0;
GordonSin 0:0ed2a7c7190c 130 ret[1] = v1;
GordonSin 0:0ed2a7c7190c 131 }
GordonSin 0:0ed2a7c7190c 132
GordonSin 0:0ed2a7c7190c 133
GordonSin 0:0ed2a7c7190c 134 /*--------------------------- dbg_init --------------------------------------*/
GordonSin 0:0ed2a7c7190c 135
GordonSin 0:0ed2a7c7190c 136 #ifdef DBG_MSG
GordonSin 0:0ed2a7c7190c 137 void dbg_init (void) {
GordonSin 0:0ed2a7c7190c 138 if ((DEMCR & DEMCR_TRCENA) &&
GordonSin 0:0ed2a7c7190c 139 (ITM_CONTROL & ITM_ITMENA) &&
GordonSin 0:0ed2a7c7190c 140 (ITM_ENABLE & (1UL << 31))) {
GordonSin 0:0ed2a7c7190c 141 dbg_msg = __TRUE;
GordonSin 0:0ed2a7c7190c 142 }
GordonSin 0:0ed2a7c7190c 143 }
GordonSin 0:0ed2a7c7190c 144 #endif
GordonSin 0:0ed2a7c7190c 145
GordonSin 0:0ed2a7c7190c 146 /*--------------------------- dbg_task_notify -------------------------------*/
GordonSin 0:0ed2a7c7190c 147
GordonSin 0:0ed2a7c7190c 148 #ifdef DBG_MSG
GordonSin 0:0ed2a7c7190c 149 void dbg_task_notify (P_TCB p_tcb, BOOL create) {
GordonSin 0:0ed2a7c7190c 150 while (ITM_PORT31_U32 == 0);
GordonSin 0:0ed2a7c7190c 151 ITM_PORT31_U32 = (U32)p_tcb->ptask;
GordonSin 0:0ed2a7c7190c 152 while (ITM_PORT31_U32 == 0);
GordonSin 0:0ed2a7c7190c 153 ITM_PORT31_U16 = (create << 8) | p_tcb->task_id;
GordonSin 0:0ed2a7c7190c 154 }
GordonSin 0:0ed2a7c7190c 155 #endif
GordonSin 0:0ed2a7c7190c 156
GordonSin 0:0ed2a7c7190c 157 /*--------------------------- dbg_task_switch -------------------------------*/
GordonSin 0:0ed2a7c7190c 158
GordonSin 0:0ed2a7c7190c 159 #ifdef DBG_MSG
GordonSin 0:0ed2a7c7190c 160 void dbg_task_switch (U32 task_id) {
GordonSin 0:0ed2a7c7190c 161 while (ITM_PORT31_U32 == 0);
GordonSin 0:0ed2a7c7190c 162 ITM_PORT31_U8 = task_id;
GordonSin 0:0ed2a7c7190c 163 }
GordonSin 0:0ed2a7c7190c 164 #endif
GordonSin 0:0ed2a7c7190c 165
GordonSin 0:0ed2a7c7190c 166
GordonSin 0:0ed2a7c7190c 167 /*----------------------------------------------------------------------------
GordonSin 0:0ed2a7c7190c 168 * end of file
GordonSin 0:0ed2a7c7190c 169 *---------------------------------------------------------------------------*/
GordonSin 0:0ed2a7c7190c 170