rt-thread-official/bsp/nrf51822/applications/startup.c

/*
 * File      : startup.c
 * This file is part of RT-Thread RTOS
 * COPYRIGHT (C) 2015, RT-Thread Develop Team
 *
 * The license and distribution terms for this file may be
 * found in the file LICENSE in this distribution or at
 * http://openlab.rt-thread.com/license/LICENSE
 *
 * Change Logs:
 * Date           Author       Notes
 * 2015-03-01     Yangfs       the first version
 * 2015-03-27     Bernard      code cleanup.
 */

#include <rthw.h>
#include <rtthread.h>

#include "board.h"

/**
 * @addtogroup NRF51822
 */

/*@{*/

extern int  rt_application_init(void);

#ifdef __CC_ARM
extern int Image$$RW_IRAM1$$ZI$$Limit;
#define NRF_HEAP_BEGIN    (&Image$$RW_IRAM1$$ZI$$Limit)
#elif __ICCARM__
#pragma section="HEAP"
#define NRF_HEAP_BEGIN    (__segment_end("HEAP"))
#else
extern int __bss_end;
#define NRF_HEAP_BEGIN    (&__bss_end)
#endif

/**
 * This function will startup RT-Thread RTOS.
 */
void rtthread_startup(void)
{
    /* init board */
    rt_hw_board_init();

    /* show version */
    rt_show_version();

    /* init timer system */
    rt_system_timer_init();

#ifdef RT_USING_HEAP
    rt_system_heap_init((void*)NRF_HEAP_BEGIN, (void*)NRF_SRAM_END);
#endif

    /* init scheduler system */
    rt_system_scheduler_init();

    /* init application */
    rt_application_init();

    /* init timer thread */
    rt_system_timer_thread_init();

    /* init idle thread */
    rt_thread_idle_init();

    /* start scheduler */
    rt_system_scheduler_start();

    /* never reach here */
    return ;
}

int main(void)
{
    /* disable interrupt first */
    rt_hw_interrupt_disable();

    /* startup RT-Thread RTOS */
    rtthread_startup();

    return 0;
}

/*@}*/