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Dependencies:   F7_Ethernet WebSocketClient mbed mcp3008

Fork of Nucleo_F746ZG_Ethernet by Dieter Graef

mbed-rtos/rtx/TARGET_ARM7/rt_System.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: RT_SYSTEM.C
DieterGraef 0:f9b6112278fe 5 * Purpose: System Task Manager
DieterGraef 0:f9b6112278fe 6 * Rev.: V4.60
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_Task.h"
DieterGraef 0:f9b6112278fe 38 #include "rt_System.h"
DieterGraef 0:f9b6112278fe 39 #include "rt_Event.h"
DieterGraef 0:f9b6112278fe 40 #include "rt_List.h"
DieterGraef 0:f9b6112278fe 41 #include "rt_Mailbox.h"
DieterGraef 0:f9b6112278fe 42 #include "rt_Semaphore.h"
DieterGraef 0:f9b6112278fe 43 #include "rt_Time.h"
DieterGraef 0:f9b6112278fe 44 #include "rt_Robin.h"
DieterGraef 0:f9b6112278fe 45 #include "rt_HAL_CM.h"
DieterGraef 0:f9b6112278fe 46
DieterGraef 0:f9b6112278fe 47 /*----------------------------------------------------------------------------
DieterGraef 0:f9b6112278fe 48 * Global Variables
DieterGraef 0:f9b6112278fe 49 *---------------------------------------------------------------------------*/
DieterGraef 0:f9b6112278fe 50
DieterGraef 0:f9b6112278fe 51 int os_tick_irqn;
DieterGraef 0:f9b6112278fe 52
DieterGraef 0:f9b6112278fe 53 /*----------------------------------------------------------------------------
DieterGraef 0:f9b6112278fe 54 * Local Variables
DieterGraef 0:f9b6112278fe 55 *---------------------------------------------------------------------------*/
DieterGraef 0:f9b6112278fe 56
DieterGraef 0:f9b6112278fe 57 static volatile BIT os_lock;
DieterGraef 0:f9b6112278fe 58 static volatile BIT os_psh_flag;
DieterGraef 0:f9b6112278fe 59 static U8 pend_flags;
DieterGraef 0:f9b6112278fe 60
DieterGraef 0:f9b6112278fe 61 /*----------------------------------------------------------------------------
DieterGraef 0:f9b6112278fe 62 * Global Functions
DieterGraef 0:f9b6112278fe 63 *---------------------------------------------------------------------------*/
DieterGraef 0:f9b6112278fe 64
DieterGraef 0:f9b6112278fe 65 #if defined (__CC_ARM)
DieterGraef 0:f9b6112278fe 66 __asm void $$RTX$$version (void) {
DieterGraef 0:f9b6112278fe 67 /* Export a version number symbol for a version control. */
DieterGraef 0:f9b6112278fe 68
DieterGraef 0:f9b6112278fe 69 EXPORT __RL_RTX_VER
DieterGraef 0:f9b6112278fe 70
DieterGraef 0:f9b6112278fe 71 __RL_RTX_VER EQU 0x450
DieterGraef 0:f9b6112278fe 72 }
DieterGraef 0:f9b6112278fe 73 #endif
DieterGraef 0:f9b6112278fe 74
DieterGraef 0:f9b6112278fe 75
DieterGraef 0:f9b6112278fe 76 /*--------------------------- rt_suspend ------------------------------------*/
DieterGraef 0:f9b6112278fe 77 U32 rt_suspend (void) {
DieterGraef 0:f9b6112278fe 78 /* Suspend OS scheduler */
DieterGraef 0:f9b6112278fe 79 U32 delta = 0xFFFF;
DieterGraef 0:f9b6112278fe 80
DieterGraef 0:f9b6112278fe 81 rt_tsk_lock();
DieterGraef 0:f9b6112278fe 82
DieterGraef 0:f9b6112278fe 83 if (os_dly.p_dlnk) {
DieterGraef 0:f9b6112278fe 84 delta = os_dly.delta_time;
DieterGraef 0:f9b6112278fe 85 }
DieterGraef 0:f9b6112278fe 86 #ifndef __CMSIS_RTOS
DieterGraef 0:f9b6112278fe 87 if (os_tmr.next) {
DieterGraef 0:f9b6112278fe 88 if (os_tmr.tcnt < delta) delta = os_tmr.tcnt;
DieterGraef 0:f9b6112278fe 89 }
DieterGraef 0:f9b6112278fe 90 #endif
DieterGraef 0:f9b6112278fe 91
DieterGraef 0:f9b6112278fe 92 return (delta);
DieterGraef 0:f9b6112278fe 93 }
DieterGraef 0:f9b6112278fe 94
DieterGraef 0:f9b6112278fe 95
DieterGraef 0:f9b6112278fe 96 /*--------------------------- rt_resume -------------------------------------*/
DieterGraef 0:f9b6112278fe 97 void rt_resume (U32 sleep_time) {
DieterGraef 0:f9b6112278fe 98 /* Resume OS scheduler after suspend */
DieterGraef 0:f9b6112278fe 99 P_TCB next;
DieterGraef 0:f9b6112278fe 100 U32 delta;
DieterGraef 0:f9b6112278fe 101
DieterGraef 0:f9b6112278fe 102 os_tsk.run->state = READY;
DieterGraef 0:f9b6112278fe 103 rt_put_rdy_first (os_tsk.run);
DieterGraef 0:f9b6112278fe 104
DieterGraef 0:f9b6112278fe 105 os_robin.task = NULL;
DieterGraef 0:f9b6112278fe 106
DieterGraef 0:f9b6112278fe 107 /* Update delays. */
DieterGraef 0:f9b6112278fe 108 if (os_dly.p_dlnk) {
DieterGraef 0:f9b6112278fe 109 delta = sleep_time;
DieterGraef 0:f9b6112278fe 110 if (delta >= os_dly.delta_time) {
DieterGraef 0:f9b6112278fe 111 delta -= os_dly.delta_time;
DieterGraef 0:f9b6112278fe 112 os_time += os_dly.delta_time;
DieterGraef 0:f9b6112278fe 113 os_dly.delta_time = 1;
DieterGraef 0:f9b6112278fe 114 while (os_dly.p_dlnk) {
DieterGraef 0:f9b6112278fe 115 rt_dec_dly();
DieterGraef 0:f9b6112278fe 116 if (delta == 0) break;
DieterGraef 0:f9b6112278fe 117 delta--;
DieterGraef 0:f9b6112278fe 118 os_time++;
DieterGraef 0:f9b6112278fe 119 }
DieterGraef 0:f9b6112278fe 120 } else {
DieterGraef 0:f9b6112278fe 121 os_time += delta;
DieterGraef 0:f9b6112278fe 122 os_dly.delta_time -= delta;
DieterGraef 0:f9b6112278fe 123 }
DieterGraef 0:f9b6112278fe 124 } else {
DieterGraef 0:f9b6112278fe 125 os_time += sleep_time;
DieterGraef 0:f9b6112278fe 126 }
DieterGraef 0:f9b6112278fe 127
DieterGraef 0:f9b6112278fe 128 #ifndef __CMSIS_RTOS
DieterGraef 0:f9b6112278fe 129 /* Check the user timers. */
DieterGraef 0:f9b6112278fe 130 if (os_tmr.next) {
DieterGraef 0:f9b6112278fe 131 delta = sleep_time;
DieterGraef 0:f9b6112278fe 132 if (delta >= os_tmr.tcnt) {
DieterGraef 0:f9b6112278fe 133 delta -= os_tmr.tcnt;
DieterGraef 0:f9b6112278fe 134 os_tmr.tcnt = 1;
DieterGraef 0:f9b6112278fe 135 while (os_tmr.next) {
DieterGraef 0:f9b6112278fe 136 rt_tmr_tick();
DieterGraef 0:f9b6112278fe 137 if (delta == 0) break;
DieterGraef 0:f9b6112278fe 138 delta--;
DieterGraef 0:f9b6112278fe 139 }
DieterGraef 0:f9b6112278fe 140 } else {
DieterGraef 0:f9b6112278fe 141 os_tmr.tcnt -= delta;
DieterGraef 0:f9b6112278fe 142 }
DieterGraef 0:f9b6112278fe 143 }
DieterGraef 0:f9b6112278fe 144 #endif
DieterGraef 0:f9b6112278fe 145
DieterGraef 0:f9b6112278fe 146 /* Switch back to highest ready task */
DieterGraef 0:f9b6112278fe 147 next = rt_get_first (&os_rdy);
DieterGraef 0:f9b6112278fe 148 rt_switch_req (next);
DieterGraef 0:f9b6112278fe 149
DieterGraef 0:f9b6112278fe 150 rt_tsk_unlock();
DieterGraef 0:f9b6112278fe 151 }
DieterGraef 0:f9b6112278fe 152
DieterGraef 0:f9b6112278fe 153
DieterGraef 0:f9b6112278fe 154 /*--------------------------- rt_tsk_lock -----------------------------------*/
DieterGraef 0:f9b6112278fe 155
DieterGraef 0:f9b6112278fe 156 void rt_tsk_lock (void) {
DieterGraef 0:f9b6112278fe 157 /* Prevent task switching by locking out scheduler */
DieterGraef 0:f9b6112278fe 158 OS_X_LOCK(os_tick_irqn);
DieterGraef 0:f9b6112278fe 159 os_lock = __TRUE;
DieterGraef 0:f9b6112278fe 160 OS_X_UNPEND (&pend_flags);
DieterGraef 0:f9b6112278fe 161 }
DieterGraef 0:f9b6112278fe 162
DieterGraef 0:f9b6112278fe 163
DieterGraef 0:f9b6112278fe 164 /*--------------------------- rt_tsk_unlock ---------------------------------*/
DieterGraef 0:f9b6112278fe 165
DieterGraef 0:f9b6112278fe 166 void rt_tsk_unlock (void) {
DieterGraef 0:f9b6112278fe 167 /* Unlock scheduler and re-enable task switching */
DieterGraef 0:f9b6112278fe 168 OS_X_UNLOCK(os_tick_irqn);
DieterGraef 0:f9b6112278fe 169 os_lock = __FALSE;
DieterGraef 0:f9b6112278fe 170 OS_X_PEND (pend_flags, os_psh_flag);
DieterGraef 0:f9b6112278fe 171 os_psh_flag = __FALSE;
DieterGraef 0:f9b6112278fe 172 }
DieterGraef 0:f9b6112278fe 173
DieterGraef 0:f9b6112278fe 174
DieterGraef 0:f9b6112278fe 175 /*--------------------------- rt_psh_req ------------------------------------*/
DieterGraef 0:f9b6112278fe 176
DieterGraef 0:f9b6112278fe 177 void rt_psh_req (void) {
DieterGraef 0:f9b6112278fe 178 /* Initiate a post service handling request if required. */
DieterGraef 0:f9b6112278fe 179 if (os_lock == __FALSE) {
DieterGraef 0:f9b6112278fe 180 OS_PEND_IRQ ();
DieterGraef 0:f9b6112278fe 181 }
DieterGraef 0:f9b6112278fe 182 else {
DieterGraef 0:f9b6112278fe 183 os_psh_flag = __TRUE;
DieterGraef 0:f9b6112278fe 184 }
DieterGraef 0:f9b6112278fe 185 }
DieterGraef 0:f9b6112278fe 186
DieterGraef 0:f9b6112278fe 187
DieterGraef 0:f9b6112278fe 188 /*--------------------------- rt_pop_req ------------------------------------*/
DieterGraef 0:f9b6112278fe 189
DieterGraef 0:f9b6112278fe 190 void rt_pop_req (void) {
DieterGraef 0:f9b6112278fe 191 /* Process an ISR post service requests. */
DieterGraef 0:f9b6112278fe 192 struct OS_XCB *p_CB;
DieterGraef 0:f9b6112278fe 193 P_TCB next;
DieterGraef 0:f9b6112278fe 194 U32 idx;
DieterGraef 0:f9b6112278fe 195
DieterGraef 0:f9b6112278fe 196 os_tsk.run->state = READY;
DieterGraef 0:f9b6112278fe 197 rt_put_rdy_first (os_tsk.run);
DieterGraef 0:f9b6112278fe 198
DieterGraef 0:f9b6112278fe 199 idx = os_psq->last;
DieterGraef 0:f9b6112278fe 200 while (os_psq->count) {
DieterGraef 0:f9b6112278fe 201 p_CB = os_psq->q[idx].id;
DieterGraef 0:f9b6112278fe 202 if (p_CB->cb_type == TCB) {
DieterGraef 0:f9b6112278fe 203 /* Is of TCB type */
DieterGraef 0:f9b6112278fe 204 rt_evt_psh ((P_TCB)p_CB, (U16)os_psq->q[idx].arg);
DieterGraef 0:f9b6112278fe 205 }
DieterGraef 0:f9b6112278fe 206 else if (p_CB->cb_type == MCB) {
DieterGraef 0:f9b6112278fe 207 /* Is of MCB type */
DieterGraef 0:f9b6112278fe 208 rt_mbx_psh ((P_MCB)p_CB, (void *)os_psq->q[idx].arg);
DieterGraef 0:f9b6112278fe 209 }
DieterGraef 0:f9b6112278fe 210 else {
DieterGraef 0:f9b6112278fe 211 /* Must be of SCB type */
DieterGraef 0:f9b6112278fe 212 rt_sem_psh ((P_SCB)p_CB);
DieterGraef 0:f9b6112278fe 213 }
DieterGraef 0:f9b6112278fe 214 if (++idx == os_psq->size) idx = 0;
DieterGraef 0:f9b6112278fe 215 rt_dec (&os_psq->count);
DieterGraef 0:f9b6112278fe 216 }
DieterGraef 0:f9b6112278fe 217 os_psq->last = idx;
DieterGraef 0:f9b6112278fe 218
DieterGraef 0:f9b6112278fe 219 next = rt_get_first (&os_rdy);
DieterGraef 0:f9b6112278fe 220 rt_switch_req (next);
DieterGraef 0:f9b6112278fe 221 }
DieterGraef 0:f9b6112278fe 222
DieterGraef 0:f9b6112278fe 223
DieterGraef 0:f9b6112278fe 224 /*--------------------------- os_tick_init ----------------------------------*/
DieterGraef 0:f9b6112278fe 225
DieterGraef 0:f9b6112278fe 226 __weak int os_tick_init (void) {
DieterGraef 0:f9b6112278fe 227 /* Initialize SysTick timer as system tick timer. */
DieterGraef 0:f9b6112278fe 228 rt_systick_init ();
DieterGraef 0:f9b6112278fe 229 return (SYS_TICK_IRQn); /* Return IRQ number of SysTick timer */
DieterGraef 0:f9b6112278fe 230 }
DieterGraef 0:f9b6112278fe 231
DieterGraef 0:f9b6112278fe 232
DieterGraef 0:f9b6112278fe 233 /*--------------------------- os_tick_irqack --------------------------------*/
DieterGraef 0:f9b6112278fe 234
DieterGraef 0:f9b6112278fe 235 __weak void os_tick_irqack (void) {
DieterGraef 0:f9b6112278fe 236 /* Acknowledge timer interrupt. */
DieterGraef 0:f9b6112278fe 237 }
DieterGraef 0:f9b6112278fe 238
DieterGraef 0:f9b6112278fe 239
DieterGraef 0:f9b6112278fe 240 /*--------------------------- rt_systick ------------------------------------*/
DieterGraef 0:f9b6112278fe 241
DieterGraef 0:f9b6112278fe 242 extern void sysTimerTick(void);
DieterGraef 0:f9b6112278fe 243
DieterGraef 0:f9b6112278fe 244 void rt_systick (void) {
DieterGraef 0:f9b6112278fe 245 if(NVIC_Pending(SYS_TICK_IRQn)){
DieterGraef 0:f9b6112278fe 246 rt_pop_req();
DieterGraef 0:f9b6112278fe 247 NVIC_UnpendIRQ(SYS_TICK_IRQn);
DieterGraef 0:f9b6112278fe 248 SYS_TICK_TIMER->IR = 0xF; // clear timer interrupt
DieterGraef 0:f9b6112278fe 249 return;
DieterGraef 0:f9b6112278fe 250 }
DieterGraef 0:f9b6112278fe 251 /* Check for system clock update, suspend running task. */
DieterGraef 0:f9b6112278fe 252 P_TCB next;
DieterGraef 0:f9b6112278fe 253
DieterGraef 0:f9b6112278fe 254 os_tsk.run->state = READY;
DieterGraef 0:f9b6112278fe 255 rt_put_rdy_first (os_tsk.run);
DieterGraef 0:f9b6112278fe 256
DieterGraef 0:f9b6112278fe 257 /* Check Round Robin timeout. */
DieterGraef 0:f9b6112278fe 258 rt_chk_robin ();
DieterGraef 0:f9b6112278fe 259
DieterGraef 0:f9b6112278fe 260 /* Update delays. */
DieterGraef 0:f9b6112278fe 261 os_time++;
DieterGraef 0:f9b6112278fe 262 rt_dec_dly ();
DieterGraef 0:f9b6112278fe 263
DieterGraef 0:f9b6112278fe 264 /* Check the user timers. */
DieterGraef 0:f9b6112278fe 265 #ifdef __CMSIS_RTOS
DieterGraef 0:f9b6112278fe 266 sysTimerTick();
DieterGraef 0:f9b6112278fe 267 #else
DieterGraef 0:f9b6112278fe 268 rt_tmr_tick ();
DieterGraef 0:f9b6112278fe 269 #endif
DieterGraef 0:f9b6112278fe 270
DieterGraef 0:f9b6112278fe 271 /* Switch back to highest ready task */
DieterGraef 0:f9b6112278fe 272 next = rt_get_first (&os_rdy);
DieterGraef 0:f9b6112278fe 273 rt_switch_req (next);
DieterGraef 0:f9b6112278fe 274 SYS_TICK_TIMER->IR = 0xF; // clear timer interrupt
DieterGraef 0:f9b6112278fe 275 }
DieterGraef 0:f9b6112278fe 276
DieterGraef 0:f9b6112278fe 277 /*--------------------------- rt_stk_check ----------------------------------*/
DieterGraef 0:f9b6112278fe 278 __weak void rt_stk_check (void) {
DieterGraef 0:f9b6112278fe 279 /* Check for stack overflow. */
DieterGraef 0:f9b6112278fe 280 if (os_tsk.run->task_id == 0x01) {
DieterGraef 0:f9b6112278fe 281 // TODO: For the main thread the check should be done against the main heap pointer
DieterGraef 0:f9b6112278fe 282 } else {
DieterGraef 0:f9b6112278fe 283 if ((os_tsk.run->tsk_stack < (U32)os_tsk.run->stack) ||
DieterGraef 0:f9b6112278fe 284 (os_tsk.run->stack[0] != MAGIC_WORD)) {
DieterGraef 0:f9b6112278fe 285 os_error (OS_ERR_STK_OVF);
DieterGraef 0:f9b6112278fe 286 }
DieterGraef 0:f9b6112278fe 287 }
DieterGraef 0:f9b6112278fe 288 }
DieterGraef 0:f9b6112278fe 289
DieterGraef 0:f9b6112278fe 290 /*----------------------------------------------------------------------------
DieterGraef 0:f9b6112278fe 291 * end of file
DieterGraef 0:f9b6112278fe 292 *---------------------------------------------------------------------------*/
DieterGraef 0:f9b6112278fe 293