startup.c

picoos源码。The RTOS and the TCP/IP stack will be built automatically.

/*
 *  Copyright (c) 2005, Dennis Kuschel.
 *  All rights reserved. 
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *
 *   1. Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *   2. Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in the
 *      documentation and/or other materials provided with the distribution.
 *   3. The name of the author may not be used to endorse or promote
 *      products derived from this software without specific prior written
 *      permission. 
 *
 *  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
 *  OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 *  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 *  ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
 *  INDIRECT,  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 *  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 *  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 *  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 *  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 *  OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 */

#include <picoos.h>
#include <conio.h>


/* external main function */
extern int main_program(void);
extern int main_setup(void);


/*-------------------------------------------------------------------------*
 *   pico]OS initialization
 */

#ifndef NOSCFG_DEFAULT_STACKSIZE
#error NOSCFG_DEFAULT_STACKSIZE not defined in port.h
#endif
#ifndef NOSCFG_STACK_GROWS_UP
#error NOSCFG_STACK_GROWS_UP not defined in port.h
#endif

#define STACKSIZE_TASK1       NOSCFG_DEFAULT_STACKSIZE
#define STACKSIZE_IDLETASK    NOSCFG_DEFAULT_STACKSIZE / 2

#if (POSCFG_TASKSTACKTYPE == 0)
static char stack_task1[STACKSIZE_TASK1];
static char stack_idletask[STACKSIZE_IDLETASK];
#endif

#if POSCFG_ENABLE_NANO
#define HEAP_SIZE  0x2000
static char heap_memory[HEAP_SIZE];
void *__heap_start = heap_memory;
void *__heap_end = (heap_memory + HEAP_SIZE - 1);
#endif


static void picoos_task1(void *arg)
{
  (void) main_program();
  for(;;) posTaskSleep(0xFF);
}

int main(void)
{
  int rc;

  /* call setupfunction outside from pico]OS */
  rc = main_setup();
  if (rc != 0)
  {
    _getch();
    return rc;
  }

  /* start multitasking and execute first task (task1) */
#if POSCFG_ENABLE_NANO
  nosInit(picoos_task1, NULL, 1, STACKSIZE_TASK1, STACKSIZE_IDLETASK);
#else
#if (POSCFG_TASKSTACKTYPE == 0)
#if NOSCFG_STACK_GROWS_UP
  posInit(picoos_task1, NULL, 1, stack_task1, stack_idletask);
#else
  posInit(picoos_task1, NULL, 1,
          stack_task1 + STACKSIZE_TASK1 - 1,
          stack_idletask + STACKSIZE_IDLETASK - 1);
#endif
#elif (POSCFG_TASKSTACKTYPE == 1)
  posInit(picoos_task1, NULL, 1, STACKSIZE_TASK1, STACKSIZE_IDLETASK);
#elif (POSCFG_TASKSTACKTYPE == 2)
  posInit(picoos_task1, NULL, 1);
#endif
#endif
  /* we will never get here */
  return 0;
}