Arlindo Montagnoli / Mbed 2 deprecated ProjetoBB

ProjetoBB

Dependencies:   F7_Ethernet WebSocketClient mbed mcp3008

Fork of Nucleo_F746ZG_Ethernet by Dieter Graef

mbed-rtos/rtx/TARGET_CORTEX_M/TARGET_M3/TOOLCHAIN_ARM/HAL_CM3.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 * CMSIS-RTOS - RTX
DieterGraef 0:f9b6112278fe 3 *----------------------------------------------------------------------------
DieterGraef 0:f9b6112278fe 4 * Name: HAL_CM3.C
DieterGraef 0:f9b6112278fe 5 * Purpose: Hardware Abstraction Layer for Cortex-M3
DieterGraef 0:f9b6112278fe 6 * Rev.: V4.70
DieterGraef 0:f9b6112278fe 7 *----------------------------------------------------------------------------
DieterGraef 0:f9b6112278fe 8 *
DieterGraef 0:f9b6112278fe 9 * Copyright (c) 1999-2009 KEIL, 2009-2013 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_HAL_CM.h"
DieterGraef 0:f9b6112278fe 39 #include "rt_Task.h"
DieterGraef 0:f9b6112278fe 40 #include "rt_MemBox.h"
DieterGraef 0:f9b6112278fe 41
DieterGraef 0:f9b6112278fe 42
DieterGraef 0:f9b6112278fe 43 /*----------------------------------------------------------------------------
DieterGraef 0:f9b6112278fe 44 * Functions
DieterGraef 0:f9b6112278fe 45 *---------------------------------------------------------------------------*/
DieterGraef 0:f9b6112278fe 46
DieterGraef 0:f9b6112278fe 47
DieterGraef 0:f9b6112278fe 48 /*--------------------------- rt_set_PSP ------------------------------------*/
DieterGraef 0:f9b6112278fe 49
DieterGraef 0:f9b6112278fe 50 __asm void rt_set_PSP (U32 stack) {
DieterGraef 0:f9b6112278fe 51 MSR PSP,R0
DieterGraef 0:f9b6112278fe 52 BX LR
DieterGraef 0:f9b6112278fe 53 }
DieterGraef 0:f9b6112278fe 54
DieterGraef 0:f9b6112278fe 55
DieterGraef 0:f9b6112278fe 56 /*--------------------------- rt_get_PSP ------------------------------------*/
DieterGraef 0:f9b6112278fe 57
DieterGraef 0:f9b6112278fe 58 __asm U32 rt_get_PSP (void) {
DieterGraef 0:f9b6112278fe 59 MRS R0,PSP
DieterGraef 0:f9b6112278fe 60 BX LR
DieterGraef 0:f9b6112278fe 61 }
DieterGraef 0:f9b6112278fe 62
DieterGraef 0:f9b6112278fe 63
DieterGraef 0:f9b6112278fe 64 /*--------------------------- os_set_env ------------------------------------*/
DieterGraef 0:f9b6112278fe 65
DieterGraef 0:f9b6112278fe 66 __asm void os_set_env (void) {
DieterGraef 0:f9b6112278fe 67 /* Switch to Unprivileged/Privileged Thread mode, use PSP. */
DieterGraef 0:f9b6112278fe 68 MOV R0,SP ; PSP = MSP
DieterGraef 0:f9b6112278fe 69 MSR PSP,R0
DieterGraef 0:f9b6112278fe 70 LDR R0,=__cpp(&os_flags)
DieterGraef 0:f9b6112278fe 71 LDRB R0,[R0]
DieterGraef 0:f9b6112278fe 72 LSLS R0,#31
DieterGraef 0:f9b6112278fe 73 MOVNE R0,#0x02 ; Privileged Thread mode, use PSP
DieterGraef 0:f9b6112278fe 74 MOVEQ R0,#0x03 ; Unprivileged Thread mode, use PSP
DieterGraef 0:f9b6112278fe 75 MSR CONTROL,R0
DieterGraef 0:f9b6112278fe 76 BX LR
DieterGraef 0:f9b6112278fe 77
DieterGraef 0:f9b6112278fe 78 ALIGN
DieterGraef 0:f9b6112278fe 79 }
DieterGraef 0:f9b6112278fe 80
DieterGraef 0:f9b6112278fe 81
DieterGraef 0:f9b6112278fe 82 /*--------------------------- _alloc_box ------------------------------------*/
DieterGraef 0:f9b6112278fe 83
DieterGraef 0:f9b6112278fe 84 __asm void *_alloc_box (void *box_mem) {
DieterGraef 0:f9b6112278fe 85 /* Function wrapper for Unprivileged/Privileged mode. */
DieterGraef 0:f9b6112278fe 86 LDR R12,=__cpp(rt_alloc_box)
DieterGraef 0:f9b6112278fe 87 MRS R3,IPSR
DieterGraef 0:f9b6112278fe 88 LSLS R3,#24
DieterGraef 0:f9b6112278fe 89 BXNE R12
DieterGraef 0:f9b6112278fe 90 MRS R3,CONTROL
DieterGraef 0:f9b6112278fe 91 LSLS R3,#31
DieterGraef 0:f9b6112278fe 92 BXEQ R12
DieterGraef 0:f9b6112278fe 93 SVC 0
DieterGraef 0:f9b6112278fe 94 BX LR
DieterGraef 0:f9b6112278fe 95
DieterGraef 0:f9b6112278fe 96 ALIGN
DieterGraef 0:f9b6112278fe 97 }
DieterGraef 0:f9b6112278fe 98
DieterGraef 0:f9b6112278fe 99
DieterGraef 0:f9b6112278fe 100 /*--------------------------- _free_box -------------------------------------*/
DieterGraef 0:f9b6112278fe 101
DieterGraef 0:f9b6112278fe 102 __asm U32 _free_box (void *box_mem, void *box) {
DieterGraef 0:f9b6112278fe 103 /* Function wrapper for Unprivileged/Privileged mode. */
DieterGraef 0:f9b6112278fe 104 LDR R12,=__cpp(rt_free_box)
DieterGraef 0:f9b6112278fe 105 MRS R3,IPSR
DieterGraef 0:f9b6112278fe 106 LSLS R3,#24
DieterGraef 0:f9b6112278fe 107 BXNE R12
DieterGraef 0:f9b6112278fe 108 MRS R3,CONTROL
DieterGraef 0:f9b6112278fe 109 LSLS R3,#31
DieterGraef 0:f9b6112278fe 110 BXEQ R12
DieterGraef 0:f9b6112278fe 111 SVC 0
DieterGraef 0:f9b6112278fe 112 BX LR
DieterGraef 0:f9b6112278fe 113
DieterGraef 0:f9b6112278fe 114 ALIGN
DieterGraef 0:f9b6112278fe 115 }
DieterGraef 0:f9b6112278fe 116
DieterGraef 0:f9b6112278fe 117
DieterGraef 0:f9b6112278fe 118 /*-------------------------- SVC_Handler ------------------------------------*/
DieterGraef 0:f9b6112278fe 119
DieterGraef 0:f9b6112278fe 120 __asm void SVC_Handler (void) {
DieterGraef 0:f9b6112278fe 121 PRESERVE8
DieterGraef 0:f9b6112278fe 122
DieterGraef 0:f9b6112278fe 123 IMPORT SVC_Count
DieterGraef 0:f9b6112278fe 124 IMPORT SVC_Table
DieterGraef 0:f9b6112278fe 125 IMPORT rt_stk_check
DieterGraef 0:f9b6112278fe 126
DieterGraef 0:f9b6112278fe 127 #ifdef IFX_XMC4XXX
DieterGraef 0:f9b6112278fe 128 EXPORT SVC_Handler_Veneer
DieterGraef 0:f9b6112278fe 129 SVC_Handler_Veneer
DieterGraef 0:f9b6112278fe 130 #endif
DieterGraef 0:f9b6112278fe 131
DieterGraef 0:f9b6112278fe 132 MRS R0,PSP ; Read PSP
DieterGraef 0:f9b6112278fe 133 LDR R1,[R0,#24] ; Read Saved PC from Stack
DieterGraef 0:f9b6112278fe 134 LDRB R1,[R1,#-2] ; Load SVC Number
DieterGraef 0:f9b6112278fe 135 CBNZ R1,SVC_User
DieterGraef 0:f9b6112278fe 136
DieterGraef 0:f9b6112278fe 137 LDM R0,{R0-R3,R12} ; Read R0-R3,R12 from stack
DieterGraef 0:f9b6112278fe 138 BLX R12 ; Call SVC Function
DieterGraef 0:f9b6112278fe 139
DieterGraef 0:f9b6112278fe 140 MRS R12,PSP ; Read PSP
DieterGraef 0:f9b6112278fe 141 STM R12,{R0-R2} ; Store return values
DieterGraef 0:f9b6112278fe 142
DieterGraef 0:f9b6112278fe 143 LDR R3,=__cpp(&os_tsk)
DieterGraef 0:f9b6112278fe 144 LDM R3,{R1,R2} ; os_tsk.run, os_tsk.new
DieterGraef 0:f9b6112278fe 145 CMP R1,R2
DieterGraef 0:f9b6112278fe 146 BEQ SVC_Exit ; no task switch
DieterGraef 0:f9b6112278fe 147
DieterGraef 0:f9b6112278fe 148 CBZ R1,SVC_Next ; Runtask deleted?
DieterGraef 0:f9b6112278fe 149 STMDB R12!,{R4-R11} ; Save Old context
DieterGraef 0:f9b6112278fe 150 STR R12,[R1,#TCB_TSTACK] ; Update os_tsk.run->tsk_stack
DieterGraef 0:f9b6112278fe 151
DieterGraef 0:f9b6112278fe 152 PUSH {R2,R3}
DieterGraef 0:f9b6112278fe 153 BL rt_stk_check ; Check for Stack overflow
DieterGraef 0:f9b6112278fe 154 POP {R2,R3}
DieterGraef 0:f9b6112278fe 155
DieterGraef 0:f9b6112278fe 156 SVC_Next
DieterGraef 0:f9b6112278fe 157 STR R2,[R3] ; os_tsk.run = os_tsk.new
DieterGraef 0:f9b6112278fe 158
DieterGraef 0:f9b6112278fe 159 LDR R12,[R2,#TCB_TSTACK] ; os_tsk.new->tsk_stack
DieterGraef 0:f9b6112278fe 160 LDMIA R12!,{R4-R11} ; Restore New Context
DieterGraef 0:f9b6112278fe 161 MSR PSP,R12 ; Write PSP
DieterGraef 0:f9b6112278fe 162
DieterGraef 0:f9b6112278fe 163 SVC_Exit
DieterGraef 0:f9b6112278fe 164 MVN LR,#:NOT:0xFFFFFFFD ; set EXC_RETURN value
DieterGraef 0:f9b6112278fe 165 #ifdef IFX_XMC4XXX
DieterGraef 0:f9b6112278fe 166 PUSH {LR}
DieterGraef 0:f9b6112278fe 167 POP {PC}
DieterGraef 0:f9b6112278fe 168 #else
DieterGraef 0:f9b6112278fe 169 BX LR
DieterGraef 0:f9b6112278fe 170 #endif
DieterGraef 0:f9b6112278fe 171
DieterGraef 0:f9b6112278fe 172 /*------------------- User SVC ------------------------------*/
DieterGraef 0:f9b6112278fe 173
DieterGraef 0:f9b6112278fe 174 SVC_User
DieterGraef 0:f9b6112278fe 175 PUSH {R4,LR} ; Save Registers
DieterGraef 0:f9b6112278fe 176 LDR R2,=SVC_Count
DieterGraef 0:f9b6112278fe 177 LDR R2,[R2]
DieterGraef 0:f9b6112278fe 178 CMP R1,R2
DieterGraef 0:f9b6112278fe 179 BHI SVC_Done ; Overflow
DieterGraef 0:f9b6112278fe 180
DieterGraef 0:f9b6112278fe 181 LDR R4,=SVC_Table-4
DieterGraef 0:f9b6112278fe 182 LDR R4,[R4,R1,LSL #2] ; Load SVC Function Address
DieterGraef 0:f9b6112278fe 183
DieterGraef 0:f9b6112278fe 184 LDM R0,{R0-R3,R12} ; Read R0-R3,R12 from stack
DieterGraef 0:f9b6112278fe 185 BLX R4 ; Call SVC Function
DieterGraef 0:f9b6112278fe 186
DieterGraef 0:f9b6112278fe 187 MRS R12,PSP
DieterGraef 0:f9b6112278fe 188 STM R12,{R0-R3} ; Function return values
DieterGraef 0:f9b6112278fe 189 SVC_Done
DieterGraef 0:f9b6112278fe 190 POP {R4,PC} ; RETI
DieterGraef 0:f9b6112278fe 191
DieterGraef 0:f9b6112278fe 192 ALIGN
DieterGraef 0:f9b6112278fe 193 }
DieterGraef 0:f9b6112278fe 194
DieterGraef 0:f9b6112278fe 195
DieterGraef 0:f9b6112278fe 196 /*-------------------------- PendSV_Handler ---------------------------------*/
DieterGraef 0:f9b6112278fe 197
DieterGraef 0:f9b6112278fe 198 __asm void PendSV_Handler (void) {
DieterGraef 0:f9b6112278fe 199 PRESERVE8
DieterGraef 0:f9b6112278fe 200
DieterGraef 0:f9b6112278fe 201 #ifdef IFX_XMC4XXX
DieterGraef 0:f9b6112278fe 202 EXPORT PendSV_Handler_Veneer
DieterGraef 0:f9b6112278fe 203 PendSV_Handler_Veneer
DieterGraef 0:f9b6112278fe 204 #endif
DieterGraef 0:f9b6112278fe 205
DieterGraef 0:f9b6112278fe 206 BL __cpp(rt_pop_req)
DieterGraef 0:f9b6112278fe 207
DieterGraef 0:f9b6112278fe 208 Sys_Switch
DieterGraef 0:f9b6112278fe 209 LDR R3,=__cpp(&os_tsk)
DieterGraef 0:f9b6112278fe 210 LDM R3,{R1,R2} ; os_tsk.run, os_tsk.new
DieterGraef 0:f9b6112278fe 211 CMP R1,R2
DieterGraef 0:f9b6112278fe 212 BEQ Sys_Exit
DieterGraef 0:f9b6112278fe 213
DieterGraef 0:f9b6112278fe 214 MRS R12,PSP ; Read PSP
DieterGraef 0:f9b6112278fe 215 STMDB R12!,{R4-R11} ; Save Old context
DieterGraef 0:f9b6112278fe 216 STR R12,[R1,#TCB_TSTACK] ; Update os_tsk.run->tsk_stack
DieterGraef 0:f9b6112278fe 217
DieterGraef 0:f9b6112278fe 218 PUSH {R2,R3}
DieterGraef 0:f9b6112278fe 219 BL rt_stk_check ; Check for Stack overflow
DieterGraef 0:f9b6112278fe 220 POP {R2,R3}
DieterGraef 0:f9b6112278fe 221
DieterGraef 0:f9b6112278fe 222 STR R2,[R3] ; os_tsk.run = os_tsk.new
DieterGraef 0:f9b6112278fe 223
DieterGraef 0:f9b6112278fe 224 LDR R12,[R2,#TCB_TSTACK] ; os_tsk.new->tsk_stack
DieterGraef 0:f9b6112278fe 225 LDMIA R12!,{R4-R11} ; Restore New Context
DieterGraef 0:f9b6112278fe 226 MSR PSP,R12 ; Write PSP
DieterGraef 0:f9b6112278fe 227
DieterGraef 0:f9b6112278fe 228 Sys_Exit
DieterGraef 0:f9b6112278fe 229 MVN LR,#:NOT:0xFFFFFFFD ; set EXC_RETURN value
DieterGraef 0:f9b6112278fe 230 #ifdef IFX_XMC4XXX
DieterGraef 0:f9b6112278fe 231 PUSH {LR}
DieterGraef 0:f9b6112278fe 232 POP {PC}
DieterGraef 0:f9b6112278fe 233 #else
DieterGraef 0:f9b6112278fe 234 BX LR ; Return to Thread Mode
DieterGraef 0:f9b6112278fe 235 #endif
DieterGraef 0:f9b6112278fe 236
DieterGraef 0:f9b6112278fe 237 ALIGN
DieterGraef 0:f9b6112278fe 238 }
DieterGraef 0:f9b6112278fe 239
DieterGraef 0:f9b6112278fe 240
DieterGraef 0:f9b6112278fe 241 /*-------------------------- SysTick_Handler --------------------------------*/
DieterGraef 0:f9b6112278fe 242
DieterGraef 0:f9b6112278fe 243 __asm void SysTick_Handler (void) {
DieterGraef 0:f9b6112278fe 244 PRESERVE8
DieterGraef 0:f9b6112278fe 245
DieterGraef 0:f9b6112278fe 246 #ifdef IFX_XMC4XXX
DieterGraef 0:f9b6112278fe 247 EXPORT SysTick_Handler_Veneer
DieterGraef 0:f9b6112278fe 248 SysTick_Handler_Veneer
DieterGraef 0:f9b6112278fe 249 #endif
DieterGraef 0:f9b6112278fe 250
DieterGraef 0:f9b6112278fe 251 BL __cpp(rt_systick)
DieterGraef 0:f9b6112278fe 252 B Sys_Switch
DieterGraef 0:f9b6112278fe 253
DieterGraef 0:f9b6112278fe 254 ALIGN
DieterGraef 0:f9b6112278fe 255 }
DieterGraef 0:f9b6112278fe 256
DieterGraef 0:f9b6112278fe 257
DieterGraef 0:f9b6112278fe 258 /*-------------------------- OS_Tick_Handler --------------------------------*/
DieterGraef 0:f9b6112278fe 259
DieterGraef 0:f9b6112278fe 260 __asm void OS_Tick_Handler (void) {
DieterGraef 0:f9b6112278fe 261 PRESERVE8
DieterGraef 0:f9b6112278fe 262
DieterGraef 0:f9b6112278fe 263 BL __cpp(os_tick_irqack)
DieterGraef 0:f9b6112278fe 264 BL __cpp(rt_systick)
DieterGraef 0:f9b6112278fe 265 B Sys_Switch
DieterGraef 0:f9b6112278fe 266
DieterGraef 0:f9b6112278fe 267 ALIGN
DieterGraef 0:f9b6112278fe 268 }
DieterGraef 0:f9b6112278fe 269
DieterGraef 0:f9b6112278fe 270
DieterGraef 0:f9b6112278fe 271 /*----------------------------------------------------------------------------
DieterGraef 0:f9b6112278fe 272 * end of file
DieterGraef 0:f9b6112278fe 273 *---------------------------------------------------------------------------*/
DieterGraef 0:f9b6112278fe 274