examples/os_simple/os_simple.c

   1 /* -------------------------------- Arctic Core ------------------------------
   2  * Arctic Core - the open source AUTOSAR platform http://arccore.com
   3  *
   4  * Copyright (C) 2009  ArcCore AB <contact@arccore.com>
   5  *
   6  * This source code is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License version 2 as published by the
   8  * Free Software Foundation; See <http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt>.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  12  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13  * for more details.
  14  * -------------------------------- Arctic Core ------------------------------*/
  15
  16
  17 #include "Os.h"
  18 #include "Mcu.h"
  19 #include "arc.h"
  20
  21 //#define USE_LDEBUG_PRINTF // Uncomment this to turn debug statements on.
  22 #include "debug.h"
  23
  24 // How many errors to keep in error log.
  25 #define ERROR_LOG_SIZE 20
  26
  27
  28 /**
  29  * Just an example of a basic task.
  30  */
  31
  32 void bTask3( void ) {
  33         StackInfoType si;
  34         TaskType currTask;
  35         LDEBUG_PRINTF("[%08u] bTask3 start\n", (unsigned)GetOsTick() );
  36
  37         GetTaskID(&currTask);
  38         Os_Arc_GetStackInfo(currTask,&si);
  39         LDEBUG_PRINTF("bTask3: %u%% stack usage\n",
  40                         (unsigned)OS_STACK_USAGE(&si));
  41
  42         TerminateTask();
  43 }
  44
  45 /**
  46  * An extended task is auto-started and is also triggered by an alarm
  47  * that sets event 2.
  48  */
  49
  50 void eTask1( void ) {
  51         volatile float tryFloatingPoint = 0.0F;
  52         StackInfoType si;
  53         TaskType currTask;
  54
  55         LDEBUG_FPUTS("eTask1 start\n");
  56         for(;;) {
  57                 SetEvent(TASK_ID_eTask2,EVENT_MASK_Event1);
  58                 WaitEvent(EVENT_MASK_Event2);
  59                 ClearEvent(EVENT_MASK_Event2);
  60                 tryFloatingPoint += 1.0F;
  61                 GetTaskID(&currTask);
  62                 Os_Arc_GetStackInfo(currTask,&si);
  63                 LDEBUG_PRINTF("eTask1: %u%% stack usage\n",
  64                                 (unsigned)OS_STACK_USAGE(&si));
  65
  66         }
  67 }
  68
  69 /**
  70  * An extended task that receives events from someone
  71  * and activates task: bTask3.
  72  */
  73 void eTask2( void ) {
  74         LDEBUG_FPUTS("eTask2 start\n");
  75
  76         for(;;) {
  77                 WaitEvent(EVENT_MASK_Event1);
  78                 ClearEvent(EVENT_MASK_Event1);
  79                 ActivateTask(TASK_ID_bTask3);
  80                 {
  81                         StackInfoType si;
  82                         TaskType currTask;
  83                         GetTaskID(&currTask);
  84                         Os_Arc_GetStackInfo(currTask,&si);
  85                         LDEBUG_PRINTF("eTask2: %u%% stack usage\n",
  86                                         (unsigned)OS_STACK_USAGE(&si));
  87                 }
  88         }
  89 }
  90
  91
  92 /*
  93  * Functions that must be supplied by the example
  94  */
  95
  96 void OsIdle( void ) {
  97         for(;;);
  98 }