rt-thread-official/bsp/samd21/applications/startup.c

/*
 * File      : startup.c
 * This file is part of RT-Thread RTOS
 * COPYRIGHT (C) 2006, 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
 * 2006-08-31     Bernard      first implementation
 */

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

#include "board.h"

/**
 * @addtogroup STM32
 */

/*@{*/

extern int  rt_application_init(void);
#ifdef RT_USING_FINSH
extern void finsh_system_init(void);
extern void finsh_set_device(const char* device);
#endif

#if defined(__CC_ARM) || defined(__CLANG_ARM)
extern int Image$$RW_IRAM1$$ZI$$Limit;
#elif __ICCARM__
#pragma section="HEAP"
#else
extern int __bss_end;
#endif

#ifdef  DEBUG
/*******************************************************************************
* Function Name  : assert_failed
* Description    : Reports the name of the source file and the source line number
*                  where the assert error has occurred.
* Input          : - file: pointer to the source file name
*                  - line: assert error line source number
* Output         : None
* Return         : None
*******************************************************************************/
void assert_failed(uint8_t* file, uint32_t line)
{
    rt_kprintf("\n\r Wrong parameter value detected on\r\n");
    rt_kprintf("       file  %s\r\n", file);
    rt_kprintf("       line  %d\r\n", line);

    while (1) ;
}
#endif

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

    /* show version */
    rt_show_version();

    /* init tick */
    rt_system_tick_init();

    /* init kernel object */
    rt_system_object_init();

    /* init timer system */
    rt_system_timer_init();

#ifdef RT_USING_HEAP
    #if defined(__CC_ARM) || defined(__CLANG_ARM)
        rt_system_heap_init((void*)&Image$$RW_IRAM1$$ZI$$Limit, (void*)CHIP_SRAM_END);
    #elif __ICCARM__
        rt_system_heap_init(__segment_end("HEAP"), (void*)CHIP_SRAM_END);
    #else
        /* init memory system */
        rt_system_heap_init((void*)&__bss_end, (void*)CHIP_SRAM_END);
    #endif
#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;
}

/*@}*/