V M / Mbed 2 deprecated NRF24L01_receiver

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Dependencies:   mbed nRF24L01P

mbed-rtos/rtx/rt_System.c@0:fdfe93cb9255, 2013-05-27 (annotated)

Committer:
vmihalcut
Date:
Mon May 27 06:06:31 2013 +0000
Revision:
0:fdfe93cb9255
NRF24L01 receiver

Who changed what in which revision?

UserRevisionLine numberNew contents of line
vmihalcut 0:fdfe93cb9255 1 /*----------------------------------------------------------------------------
vmihalcut 0:fdfe93cb9255 2 * RL-ARM - RTX
vmihalcut 0:fdfe93cb9255 3 *----------------------------------------------------------------------------
vmihalcut 0:fdfe93cb9255 4 * Name: RT_SYSTEM.C
vmihalcut 0:fdfe93cb9255 5 * Purpose: System Task Manager
vmihalcut 0:fdfe93cb9255 6 * Rev.: V4.60
vmihalcut 0:fdfe93cb9255 7 *----------------------------------------------------------------------------
vmihalcut 0:fdfe93cb9255 8 *
vmihalcut 0:fdfe93cb9255 9 * Copyright (c) 1999-2009 KEIL, 2009-2012 ARM Germany GmbH
vmihalcut 0:fdfe93cb9255 10 * All rights reserved.
vmihalcut 0:fdfe93cb9255 11 * Redistribution and use in source and binary forms, with or without
vmihalcut 0:fdfe93cb9255 12 * modification, are permitted provided that the following conditions are met:
vmihalcut 0:fdfe93cb9255 13 * - Redistributions of source code must retain the above copyright
vmihalcut 0:fdfe93cb9255 14 * notice, this list of conditions and the following disclaimer.
vmihalcut 0:fdfe93cb9255 15 * - Redistributions in binary form must reproduce the above copyright
vmihalcut 0:fdfe93cb9255 16 * notice, this list of conditions and the following disclaimer in the
vmihalcut 0:fdfe93cb9255 17 * documentation and/or other materials provided with the distribution.
vmihalcut 0:fdfe93cb9255 18 * - Neither the name of ARM nor the names of its contributors may be used
vmihalcut 0:fdfe93cb9255 19 * to endorse or promote products derived from this software without
vmihalcut 0:fdfe93cb9255 20 * specific prior written permission.
vmihalcut 0:fdfe93cb9255 21 *
vmihalcut 0:fdfe93cb9255 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
vmihalcut 0:fdfe93cb9255 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
vmihalcut 0:fdfe93cb9255 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
vmihalcut 0:fdfe93cb9255 25 * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
vmihalcut 0:fdfe93cb9255 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
vmihalcut 0:fdfe93cb9255 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
vmihalcut 0:fdfe93cb9255 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
vmihalcut 0:fdfe93cb9255 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
vmihalcut 0:fdfe93cb9255 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
vmihalcut 0:fdfe93cb9255 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
vmihalcut 0:fdfe93cb9255 32 * POSSIBILITY OF SUCH DAMAGE.
vmihalcut 0:fdfe93cb9255 33 *---------------------------------------------------------------------------*/
vmihalcut 0:fdfe93cb9255 34
vmihalcut 0:fdfe93cb9255 35 #include "rt_TypeDef.h"
vmihalcut 0:fdfe93cb9255 36 #include "RTX_Conf.h"
vmihalcut 0:fdfe93cb9255 37 #include "rt_Task.h"
vmihalcut 0:fdfe93cb9255 38 #include "rt_System.h"
vmihalcut 0:fdfe93cb9255 39 #include "rt_Event.h"
vmihalcut 0:fdfe93cb9255 40 #include "rt_List.h"
vmihalcut 0:fdfe93cb9255 41 #include "rt_Mailbox.h"
vmihalcut 0:fdfe93cb9255 42 #include "rt_Semaphore.h"
vmihalcut 0:fdfe93cb9255 43 #include "rt_Time.h"
vmihalcut 0:fdfe93cb9255 44 #include "rt_Robin.h"
vmihalcut 0:fdfe93cb9255 45 #include "rt_HAL_CM.h"
vmihalcut 0:fdfe93cb9255 46
vmihalcut 0:fdfe93cb9255 47 /*----------------------------------------------------------------------------
vmihalcut 0:fdfe93cb9255 48 * Global Variables
vmihalcut 0:fdfe93cb9255 49 *---------------------------------------------------------------------------*/
vmihalcut 0:fdfe93cb9255 50
vmihalcut 0:fdfe93cb9255 51 int os_tick_irqn;
vmihalcut 0:fdfe93cb9255 52
vmihalcut 0:fdfe93cb9255 53 /*----------------------------------------------------------------------------
vmihalcut 0:fdfe93cb9255 54 * Local Variables
vmihalcut 0:fdfe93cb9255 55 *---------------------------------------------------------------------------*/
vmihalcut 0:fdfe93cb9255 56
vmihalcut 0:fdfe93cb9255 57 static volatile BIT os_lock;
vmihalcut 0:fdfe93cb9255 58 static volatile BIT os_psh_flag;
vmihalcut 0:fdfe93cb9255 59 static U8 pend_flags;
vmihalcut 0:fdfe93cb9255 60
vmihalcut 0:fdfe93cb9255 61 /*----------------------------------------------------------------------------
vmihalcut 0:fdfe93cb9255 62 * Global Functions
vmihalcut 0:fdfe93cb9255 63 *---------------------------------------------------------------------------*/
vmihalcut 0:fdfe93cb9255 64
vmihalcut 0:fdfe93cb9255 65 #if defined (__CC_ARM)
vmihalcut 0:fdfe93cb9255 66 __asm void $$RTX$$version (void) {
vmihalcut 0:fdfe93cb9255 67 /* Export a version number symbol for a version control. */
vmihalcut 0:fdfe93cb9255 68
vmihalcut 0:fdfe93cb9255 69 EXPORT __RL_RTX_VER
vmihalcut 0:fdfe93cb9255 70
vmihalcut 0:fdfe93cb9255 71 __RL_RTX_VER EQU 0x450
vmihalcut 0:fdfe93cb9255 72 }
vmihalcut 0:fdfe93cb9255 73 #endif
vmihalcut 0:fdfe93cb9255 74
vmihalcut 0:fdfe93cb9255 75
vmihalcut 0:fdfe93cb9255 76 /*--------------------------- rt_suspend ------------------------------------*/
vmihalcut 0:fdfe93cb9255 77 U32 rt_suspend (void) {
vmihalcut 0:fdfe93cb9255 78 /* Suspend OS scheduler */
vmihalcut 0:fdfe93cb9255 79 U32 delta = 0xFFFF;
vmihalcut 0:fdfe93cb9255 80
vmihalcut 0:fdfe93cb9255 81 rt_tsk_lock();
vmihalcut 0:fdfe93cb9255 82
vmihalcut 0:fdfe93cb9255 83 if (os_dly.p_dlnk) {
vmihalcut 0:fdfe93cb9255 84 delta = os_dly.delta_time;
vmihalcut 0:fdfe93cb9255 85 }
vmihalcut 0:fdfe93cb9255 86 #ifndef __CMSIS_RTOS
vmihalcut 0:fdfe93cb9255 87 if (os_tmr.next) {
vmihalcut 0:fdfe93cb9255 88 if (os_tmr.tcnt < delta) delta = os_tmr.tcnt;
vmihalcut 0:fdfe93cb9255 89 }
vmihalcut 0:fdfe93cb9255 90 #endif
vmihalcut 0:fdfe93cb9255 91
vmihalcut 0:fdfe93cb9255 92 return (delta);
vmihalcut 0:fdfe93cb9255 93 }
vmihalcut 0:fdfe93cb9255 94
vmihalcut 0:fdfe93cb9255 95
vmihalcut 0:fdfe93cb9255 96 /*--------------------------- rt_resume -------------------------------------*/
vmihalcut 0:fdfe93cb9255 97 void rt_resume (U32 sleep_time) {
vmihalcut 0:fdfe93cb9255 98 /* Resume OS scheduler after suspend */
vmihalcut 0:fdfe93cb9255 99 P_TCB next;
vmihalcut 0:fdfe93cb9255 100 U32 delta;
vmihalcut 0:fdfe93cb9255 101
vmihalcut 0:fdfe93cb9255 102 os_tsk.run->state = READY;
vmihalcut 0:fdfe93cb9255 103 rt_put_rdy_first (os_tsk.run);
vmihalcut 0:fdfe93cb9255 104
vmihalcut 0:fdfe93cb9255 105 os_robin.task = NULL;
vmihalcut 0:fdfe93cb9255 106
vmihalcut 0:fdfe93cb9255 107 /* Update delays. */
vmihalcut 0:fdfe93cb9255 108 if (os_dly.p_dlnk) {
vmihalcut 0:fdfe93cb9255 109 delta = sleep_time;
vmihalcut 0:fdfe93cb9255 110 if (delta >= os_dly.delta_time) {
vmihalcut 0:fdfe93cb9255 111 delta -= os_dly.delta_time;
vmihalcut 0:fdfe93cb9255 112 os_time += os_dly.delta_time;
vmihalcut 0:fdfe93cb9255 113 os_dly.delta_time = 1;
vmihalcut 0:fdfe93cb9255 114 while (os_dly.p_dlnk) {
vmihalcut 0:fdfe93cb9255 115 rt_dec_dly();
vmihalcut 0:fdfe93cb9255 116 if (delta == 0) break;
vmihalcut 0:fdfe93cb9255 117 delta--;
vmihalcut 0:fdfe93cb9255 118 os_time++;
vmihalcut 0:fdfe93cb9255 119 }
vmihalcut 0:fdfe93cb9255 120 } else {
vmihalcut 0:fdfe93cb9255 121 os_time += delta;
vmihalcut 0:fdfe93cb9255 122 os_dly.delta_time -= delta;
vmihalcut 0:fdfe93cb9255 123 }
vmihalcut 0:fdfe93cb9255 124 } else {
vmihalcut 0:fdfe93cb9255 125 os_time += sleep_time;
vmihalcut 0:fdfe93cb9255 126 }
vmihalcut 0:fdfe93cb9255 127
vmihalcut 0:fdfe93cb9255 128 #ifndef __CMSIS_RTOS
vmihalcut 0:fdfe93cb9255 129 /* Check the user timers. */
vmihalcut 0:fdfe93cb9255 130 if (os_tmr.next) {
vmihalcut 0:fdfe93cb9255 131 delta = sleep_time;
vmihalcut 0:fdfe93cb9255 132 if (delta >= os_tmr.tcnt) {
vmihalcut 0:fdfe93cb9255 133 delta -= os_tmr.tcnt;
vmihalcut 0:fdfe93cb9255 134 os_tmr.tcnt = 1;
vmihalcut 0:fdfe93cb9255 135 while (os_tmr.next) {
vmihalcut 0:fdfe93cb9255 136 rt_tmr_tick();
vmihalcut 0:fdfe93cb9255 137 if (delta == 0) break;
vmihalcut 0:fdfe93cb9255 138 delta--;
vmihalcut 0:fdfe93cb9255 139 }
vmihalcut 0:fdfe93cb9255 140 } else {
vmihalcut 0:fdfe93cb9255 141 os_tmr.tcnt -= delta;
vmihalcut 0:fdfe93cb9255 142 }
vmihalcut 0:fdfe93cb9255 143 }
vmihalcut 0:fdfe93cb9255 144 #endif
vmihalcut 0:fdfe93cb9255 145
vmihalcut 0:fdfe93cb9255 146 /* Switch back to highest ready task */
vmihalcut 0:fdfe93cb9255 147 next = rt_get_first (&os_rdy);
vmihalcut 0:fdfe93cb9255 148 rt_switch_req (next);
vmihalcut 0:fdfe93cb9255 149
vmihalcut 0:fdfe93cb9255 150 rt_tsk_unlock();
vmihalcut 0:fdfe93cb9255 151 }
vmihalcut 0:fdfe93cb9255 152
vmihalcut 0:fdfe93cb9255 153
vmihalcut 0:fdfe93cb9255 154 /*--------------------------- rt_tsk_lock -----------------------------------*/
vmihalcut 0:fdfe93cb9255 155
vmihalcut 0:fdfe93cb9255 156 void rt_tsk_lock (void) {
vmihalcut 0:fdfe93cb9255 157 /* Prevent task switching by locking out scheduler */
vmihalcut 0:fdfe93cb9255 158 if (os_tick_irqn < 0) {
vmihalcut 0:fdfe93cb9255 159 OS_LOCK();
vmihalcut 0:fdfe93cb9255 160 os_lock = __TRUE;
vmihalcut 0:fdfe93cb9255 161 OS_UNPEND (&pend_flags);
vmihalcut 0:fdfe93cb9255 162 } else {
vmihalcut 0:fdfe93cb9255 163 OS_X_LOCK(os_tick_irqn);
vmihalcut 0:fdfe93cb9255 164 os_lock = __TRUE;
vmihalcut 0:fdfe93cb9255 165 OS_X_UNPEND (&pend_flags);
vmihalcut 0:fdfe93cb9255 166 }
vmihalcut 0:fdfe93cb9255 167 }
vmihalcut 0:fdfe93cb9255 168
vmihalcut 0:fdfe93cb9255 169
vmihalcut 0:fdfe93cb9255 170 /*--------------------------- rt_tsk_unlock ---------------------------------*/
vmihalcut 0:fdfe93cb9255 171
vmihalcut 0:fdfe93cb9255 172 void rt_tsk_unlock (void) {
vmihalcut 0:fdfe93cb9255 173 /* Unlock scheduler and re-enable task switching */
vmihalcut 0:fdfe93cb9255 174 if (os_tick_irqn < 0) {
vmihalcut 0:fdfe93cb9255 175 OS_UNLOCK();
vmihalcut 0:fdfe93cb9255 176 os_lock = __FALSE;
vmihalcut 0:fdfe93cb9255 177 OS_PEND (pend_flags, os_psh_flag);
vmihalcut 0:fdfe93cb9255 178 os_psh_flag = __FALSE;
vmihalcut 0:fdfe93cb9255 179 } else {
vmihalcut 0:fdfe93cb9255 180 OS_X_UNLOCK(os_tick_irqn);
vmihalcut 0:fdfe93cb9255 181 os_lock = __FALSE;
vmihalcut 0:fdfe93cb9255 182 OS_X_PEND (pend_flags, os_psh_flag);
vmihalcut 0:fdfe93cb9255 183 os_psh_flag = __FALSE;
vmihalcut 0:fdfe93cb9255 184 }
vmihalcut 0:fdfe93cb9255 185 }
vmihalcut 0:fdfe93cb9255 186
vmihalcut 0:fdfe93cb9255 187
vmihalcut 0:fdfe93cb9255 188 /*--------------------------- rt_psh_req ------------------------------------*/
vmihalcut 0:fdfe93cb9255 189
vmihalcut 0:fdfe93cb9255 190 void rt_psh_req (void) {
vmihalcut 0:fdfe93cb9255 191 /* Initiate a post service handling request if required. */
vmihalcut 0:fdfe93cb9255 192 if (os_lock == __FALSE) {
vmihalcut 0:fdfe93cb9255 193 OS_PEND_IRQ ();
vmihalcut 0:fdfe93cb9255 194 }
vmihalcut 0:fdfe93cb9255 195 else {
vmihalcut 0:fdfe93cb9255 196 os_psh_flag = __TRUE;
vmihalcut 0:fdfe93cb9255 197 }
vmihalcut 0:fdfe93cb9255 198 }
vmihalcut 0:fdfe93cb9255 199
vmihalcut 0:fdfe93cb9255 200
vmihalcut 0:fdfe93cb9255 201 /*--------------------------- rt_pop_req ------------------------------------*/
vmihalcut 0:fdfe93cb9255 202
vmihalcut 0:fdfe93cb9255 203 void rt_pop_req (void) {
vmihalcut 0:fdfe93cb9255 204 /* Process an ISR post service requests. */
vmihalcut 0:fdfe93cb9255 205 struct OS_XCB *p_CB;
vmihalcut 0:fdfe93cb9255 206 P_TCB next;
vmihalcut 0:fdfe93cb9255 207 U32 idx;
vmihalcut 0:fdfe93cb9255 208
vmihalcut 0:fdfe93cb9255 209 os_tsk.run->state = READY;
vmihalcut 0:fdfe93cb9255 210 rt_put_rdy_first (os_tsk.run);
vmihalcut 0:fdfe93cb9255 211
vmihalcut 0:fdfe93cb9255 212 idx = os_psq->last;
vmihalcut 0:fdfe93cb9255 213 while (os_psq->count) {
vmihalcut 0:fdfe93cb9255 214 p_CB = os_psq->q[idx].id;
vmihalcut 0:fdfe93cb9255 215 if (p_CB->cb_type == TCB) {
vmihalcut 0:fdfe93cb9255 216 /* Is of TCB type */
vmihalcut 0:fdfe93cb9255 217 rt_evt_psh ((P_TCB)p_CB, (U16)os_psq->q[idx].arg);
vmihalcut 0:fdfe93cb9255 218 }
vmihalcut 0:fdfe93cb9255 219 else if (p_CB->cb_type == MCB) {
vmihalcut 0:fdfe93cb9255 220 /* Is of MCB type */
vmihalcut 0:fdfe93cb9255 221 rt_mbx_psh ((P_MCB)p_CB, (void *)os_psq->q[idx].arg);
vmihalcut 0:fdfe93cb9255 222 }
vmihalcut 0:fdfe93cb9255 223 else {
vmihalcut 0:fdfe93cb9255 224 /* Must be of SCB type */
vmihalcut 0:fdfe93cb9255 225 rt_sem_psh ((P_SCB)p_CB);
vmihalcut 0:fdfe93cb9255 226 }
vmihalcut 0:fdfe93cb9255 227 if (++idx == os_psq->size) idx = 0;
vmihalcut 0:fdfe93cb9255 228 rt_dec (&os_psq->count);
vmihalcut 0:fdfe93cb9255 229 }
vmihalcut 0:fdfe93cb9255 230 os_psq->last = idx;
vmihalcut 0:fdfe93cb9255 231
vmihalcut 0:fdfe93cb9255 232 next = rt_get_first (&os_rdy);
vmihalcut 0:fdfe93cb9255 233 rt_switch_req (next);
vmihalcut 0:fdfe93cb9255 234 }
vmihalcut 0:fdfe93cb9255 235
vmihalcut 0:fdfe93cb9255 236
vmihalcut 0:fdfe93cb9255 237 /*--------------------------- os_tick_init ----------------------------------*/
vmihalcut 0:fdfe93cb9255 238
vmihalcut 0:fdfe93cb9255 239 __weak int os_tick_init (void) {
vmihalcut 0:fdfe93cb9255 240 /* Initialize SysTick timer as system tick timer. */
vmihalcut 0:fdfe93cb9255 241 rt_systick_init ();
vmihalcut 0:fdfe93cb9255 242 return (-1); /* Return IRQ number of SysTick timer */
vmihalcut 0:fdfe93cb9255 243 }
vmihalcut 0:fdfe93cb9255 244
vmihalcut 0:fdfe93cb9255 245
vmihalcut 0:fdfe93cb9255 246 /*--------------------------- os_tick_irqack --------------------------------*/
vmihalcut 0:fdfe93cb9255 247
vmihalcut 0:fdfe93cb9255 248 __weak void os_tick_irqack (void) {
vmihalcut 0:fdfe93cb9255 249 /* Acknowledge timer interrupt. */
vmihalcut 0:fdfe93cb9255 250 }
vmihalcut 0:fdfe93cb9255 251
vmihalcut 0:fdfe93cb9255 252
vmihalcut 0:fdfe93cb9255 253 /*--------------------------- rt_systick ------------------------------------*/
vmihalcut 0:fdfe93cb9255 254
vmihalcut 0:fdfe93cb9255 255 extern void sysTimerTick(void);
vmihalcut 0:fdfe93cb9255 256
vmihalcut 0:fdfe93cb9255 257 void rt_systick (void) {
vmihalcut 0:fdfe93cb9255 258 /* Check for system clock update, suspend running task. */
vmihalcut 0:fdfe93cb9255 259 P_TCB next;
vmihalcut 0:fdfe93cb9255 260
vmihalcut 0:fdfe93cb9255 261 os_tsk.run->state = READY;
vmihalcut 0:fdfe93cb9255 262 rt_put_rdy_first (os_tsk.run);
vmihalcut 0:fdfe93cb9255 263
vmihalcut 0:fdfe93cb9255 264 /* Check Round Robin timeout. */
vmihalcut 0:fdfe93cb9255 265 rt_chk_robin ();
vmihalcut 0:fdfe93cb9255 266
vmihalcut 0:fdfe93cb9255 267 /* Update delays. */
vmihalcut 0:fdfe93cb9255 268 os_time++;
vmihalcut 0:fdfe93cb9255 269 rt_dec_dly ();
vmihalcut 0:fdfe93cb9255 270
vmihalcut 0:fdfe93cb9255 271 /* Check the user timers. */
vmihalcut 0:fdfe93cb9255 272 #ifdef __CMSIS_RTOS
vmihalcut 0:fdfe93cb9255 273 sysTimerTick();
vmihalcut 0:fdfe93cb9255 274 #else
vmihalcut 0:fdfe93cb9255 275 rt_tmr_tick ();
vmihalcut 0:fdfe93cb9255 276 #endif
vmihalcut 0:fdfe93cb9255 277
vmihalcut 0:fdfe93cb9255 278 /* Switch back to highest ready task */
vmihalcut 0:fdfe93cb9255 279 next = rt_get_first (&os_rdy);
vmihalcut 0:fdfe93cb9255 280 rt_switch_req (next);
vmihalcut 0:fdfe93cb9255 281 }
vmihalcut 0:fdfe93cb9255 282
vmihalcut 0:fdfe93cb9255 283 /*--------------------------- rt_stk_check ----------------------------------*/
vmihalcut 0:fdfe93cb9255 284 __weak void rt_stk_check (void) {
vmihalcut 0:fdfe93cb9255 285 /* Check for stack overflow. */
vmihalcut 0:fdfe93cb9255 286 if (os_tsk.run->task_id == 0x01) {
vmihalcut 0:fdfe93cb9255 287 // TODO: For the main thread the check should be done against the main heap pointer
vmihalcut 0:fdfe93cb9255 288 } else {
vmihalcut 0:fdfe93cb9255 289 if ((os_tsk.run->tsk_stack < (U32)os_tsk.run->stack) ||
vmihalcut 0:fdfe93cb9255 290 (os_tsk.run->stack[0] != MAGIC_WORD)) {
vmihalcut 0:fdfe93cb9255 291 os_error (OS_ERR_STK_OVF);
vmihalcut 0:fdfe93cb9255 292 }
vmihalcut 0:fdfe93cb9255 293 }
vmihalcut 0:fdfe93cb9255 294 }
vmihalcut 0:fdfe93cb9255 295
vmihalcut 0:fdfe93cb9255 296 /*----------------------------------------------------------------------------
vmihalcut 0:fdfe93cb9255 297 * end of file
vmihalcut 0:fdfe93cb9255 298 *---------------------------------------------------------------------------*/
vmihalcut 0:fdfe93cb9255 299