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Dependencies:   F7_Ethernet WebSocketClient mbed mcp3008

Fork of Nucleo_F746ZG_Ethernet by Dieter Graef

mbed-rtos/rtx/TARGET_ARM7/HAL_CM.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?

UserRevisionLine numberNew contents of line
DieterGraef 0:f9b6112278fe 1 /*----------------------------------------------------------------------------
DieterGraef 0:f9b6112278fe 2 * RL-ARM - RTX
DieterGraef 0:f9b6112278fe 3 *----------------------------------------------------------------------------
DieterGraef 0:f9b6112278fe 4 * Name: HAL_CM.C
DieterGraef 0:f9b6112278fe 5 * Purpose: Hardware Abstraction Layer for ARM7TDMI
DieterGraef 0:f9b6112278fe 6 * Rev.: V1.0
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_Conf.h"
DieterGraef 0:f9b6112278fe 37 #include "rt_HAL_CM.h"
DieterGraef 0:f9b6112278fe 38
DieterGraef 0:f9b6112278fe 39
DieterGraef 0:f9b6112278fe 40 /*----------------------------------------------------------------------------
DieterGraef 0:f9b6112278fe 41 * Global Variables
DieterGraef 0:f9b6112278fe 42 *---------------------------------------------------------------------------*/
DieterGraef 0:f9b6112278fe 43
DieterGraef 0:f9b6112278fe 44 #ifdef DBG_MSG
DieterGraef 0:f9b6112278fe 45 BIT dbg_msg;
DieterGraef 0:f9b6112278fe 46 #endif
DieterGraef 0:f9b6112278fe 47
DieterGraef 0:f9b6112278fe 48 /*----------------------------------------------------------------------------
DieterGraef 0:f9b6112278fe 49 * Functions
DieterGraef 0:f9b6112278fe 50 *---------------------------------------------------------------------------*/
DieterGraef 0:f9b6112278fe 51
DieterGraef 0:f9b6112278fe 52
DieterGraef 0:f9b6112278fe 53 /*--------------------------- rt_init_stack ---------------------------------*/
DieterGraef 0:f9b6112278fe 54
DieterGraef 0:f9b6112278fe 55 void rt_init_stack (P_TCB p_TCB, FUNCP task_body) {
DieterGraef 0:f9b6112278fe 56 /* Prepare TCB and saved context for a first time start of a task. */
DieterGraef 0:f9b6112278fe 57 U32 *stk,i,size;
DieterGraef 0:f9b6112278fe 58
DieterGraef 0:f9b6112278fe 59 /* Prepare a complete interrupt frame for first task start */
DieterGraef 0:f9b6112278fe 60 size = p_TCB->priv_stack >> 2;
DieterGraef 0:f9b6112278fe 61
DieterGraef 0:f9b6112278fe 62 /* Write to the top of stack. */
DieterGraef 0:f9b6112278fe 63 stk = &p_TCB->stack[size];
DieterGraef 0:f9b6112278fe 64
DieterGraef 0:f9b6112278fe 65 /* Auto correct to 8-byte ARM stack alignment. */
DieterGraef 0:f9b6112278fe 66 if ((U32)stk & 0x04) {
DieterGraef 0:f9b6112278fe 67 stk--;
DieterGraef 0:f9b6112278fe 68 }
DieterGraef 0:f9b6112278fe 69
DieterGraef 0:f9b6112278fe 70 stk -= 16;
DieterGraef 0:f9b6112278fe 71
DieterGraef 0:f9b6112278fe 72 /* Default xPSR and initial PC */
DieterGraef 0:f9b6112278fe 73 stk[15] = (U32)task_body + 4; /* add 4 byte offset because SUB PC, LR - 4 */
DieterGraef 0:f9b6112278fe 74 stk[0] = INITIAL_xPSR;
DieterGraef 0:f9b6112278fe 75
DieterGraef 0:f9b6112278fe 76 /* Clear R0-R13/LR registers. */
DieterGraef 0:f9b6112278fe 77 for (i = 1; i < 14; i++) {
DieterGraef 0:f9b6112278fe 78 stk[i] = 0;
DieterGraef 0:f9b6112278fe 79 }
DieterGraef 0:f9b6112278fe 80
DieterGraef 0:f9b6112278fe 81 /* Assign a void pointer to R0. */
DieterGraef 0:f9b6112278fe 82 stk[TCB_STACK_R0_OFFSET_DWORDS] = (U32)p_TCB->msg;
DieterGraef 0:f9b6112278fe 83
DieterGraef 0:f9b6112278fe 84 /* Initial Task stack pointer. */
DieterGraef 0:f9b6112278fe 85 p_TCB->tsk_stack = (U32)stk;
DieterGraef 0:f9b6112278fe 86
DieterGraef 0:f9b6112278fe 87 /* Task entry point. */
DieterGraef 0:f9b6112278fe 88 p_TCB->ptask = task_body;
DieterGraef 0:f9b6112278fe 89
DieterGraef 0:f9b6112278fe 90 /* Set a magic word for checking of stack overflow.
DieterGraef 0:f9b6112278fe 91 For the main thread (ID: 0x01) the stack is in a memory area shared with the
DieterGraef 0:f9b6112278fe 92 heap, therefore the last word of the stack is a moving target.
DieterGraef 0:f9b6112278fe 93 We want to do stack/heap collision detection instead.
DieterGraef 0:f9b6112278fe 94 */
DieterGraef 0:f9b6112278fe 95 if (p_TCB->task_id != 0x01)
DieterGraef 0:f9b6112278fe 96 p_TCB->stack[0] = MAGIC_WORD;
DieterGraef 0:f9b6112278fe 97 }
DieterGraef 0:f9b6112278fe 98
DieterGraef 0:f9b6112278fe 99
DieterGraef 0:f9b6112278fe 100 /*--------------------------- rt_ret_val ----------------------------------*/
DieterGraef 0:f9b6112278fe 101
DieterGraef 0:f9b6112278fe 102 static __inline U32 *rt_ret_regs (P_TCB p_TCB) {
DieterGraef 0:f9b6112278fe 103 /* Get pointer to task return value registers (R0..R3) in Stack */
DieterGraef 0:f9b6112278fe 104
DieterGraef 0:f9b6112278fe 105 /* Stack Frame: CPSR,R0-R13,PC */
DieterGraef 0:f9b6112278fe 106 return (U32 *)(p_TCB->tsk_stack + TCB_STACK_R0_OFFSET_BYTES);
DieterGraef 0:f9b6112278fe 107 }
DieterGraef 0:f9b6112278fe 108
DieterGraef 0:f9b6112278fe 109 void rt_ret_val (P_TCB p_TCB, U32 v0) {
DieterGraef 0:f9b6112278fe 110 U32 *ret;
DieterGraef 0:f9b6112278fe 111
DieterGraef 0:f9b6112278fe 112 ret = rt_ret_regs(p_TCB);
DieterGraef 0:f9b6112278fe 113 ret[0] = v0;
DieterGraef 0:f9b6112278fe 114 }
DieterGraef 0:f9b6112278fe 115
DieterGraef 0:f9b6112278fe 116 void rt_ret_val2(P_TCB p_TCB, U32 v0, U32 v1) {
DieterGraef 0:f9b6112278fe 117 U32 *ret;
DieterGraef 0:f9b6112278fe 118
DieterGraef 0:f9b6112278fe 119 ret = rt_ret_regs(p_TCB);
DieterGraef 0:f9b6112278fe 120 ret[0] = v0;
DieterGraef 0:f9b6112278fe 121 ret[1] = v1;
DieterGraef 0:f9b6112278fe 122 }
DieterGraef 0:f9b6112278fe 123
DieterGraef 0:f9b6112278fe 124
DieterGraef 0:f9b6112278fe 125 /*--------------------------- dbg_init --------------------------------------*/
DieterGraef 0:f9b6112278fe 126
DieterGraef 0:f9b6112278fe 127 #ifdef DBG_MSG
DieterGraef 0:f9b6112278fe 128 void dbg_init (void) {
DieterGraef 0:f9b6112278fe 129 if ((DEMCR & DEMCR_TRCENA) &&
DieterGraef 0:f9b6112278fe 130 (ITM_CONTROL & ITM_ITMENA) &&
DieterGraef 0:f9b6112278fe 131 (ITM_ENABLE & (1UL << 31))) {
DieterGraef 0:f9b6112278fe 132 dbg_msg = __TRUE;
DieterGraef 0:f9b6112278fe 133 }
DieterGraef 0:f9b6112278fe 134 }
DieterGraef 0:f9b6112278fe 135 #endif
DieterGraef 0:f9b6112278fe 136
DieterGraef 0:f9b6112278fe 137 /*--------------------------- dbg_task_notify -------------------------------*/
DieterGraef 0:f9b6112278fe 138
DieterGraef 0:f9b6112278fe 139 #ifdef DBG_MSG
DieterGraef 0:f9b6112278fe 140 void dbg_task_notify (P_TCB p_tcb, BOOL create) {
DieterGraef 0:f9b6112278fe 141 while (ITM_PORT31_U32 == 0);
DieterGraef 0:f9b6112278fe 142 ITM_PORT31_U32 = (U32)p_tcb->ptask;
DieterGraef 0:f9b6112278fe 143 while (ITM_PORT31_U32 == 0);
DieterGraef 0:f9b6112278fe 144 ITM_PORT31_U16 = (create << 8) | p_tcb->task_id;
DieterGraef 0:f9b6112278fe 145 }
DieterGraef 0:f9b6112278fe 146 #endif
DieterGraef 0:f9b6112278fe 147
DieterGraef 0:f9b6112278fe 148 /*--------------------------- dbg_task_switch -------------------------------*/
DieterGraef 0:f9b6112278fe 149
DieterGraef 0:f9b6112278fe 150 #ifdef DBG_MSG
DieterGraef 0:f9b6112278fe 151 void dbg_task_switch (U32 task_id) {
DieterGraef 0:f9b6112278fe 152 while (ITM_PORT31_U32 == 0);
DieterGraef 0:f9b6112278fe 153 ITM_PORT31_U8 = task_id;
DieterGraef 0:f9b6112278fe 154 }
DieterGraef 0:f9b6112278fe 155 #endif
DieterGraef 0:f9b6112278fe 156
DieterGraef 0:f9b6112278fe 157
DieterGraef 0:f9b6112278fe 158 /*----------------------------------------------------------------------------
DieterGraef 0:f9b6112278fe 159 * end of file
DieterGraef 0:f9b6112278fe 160 *---------------------------------------------------------------------------*/
DieterGraef 0:f9b6112278fe 161