rt-thread/bsp/tms320f28379d/drivers/board.c

/*
 * File      : board.c
 * This file is part of RT-Thread RTOS
 * COPYRIGHT (C) 2009, RT-Thread Development Team
 *
 * The license and distribution terms for this file may be
 * found in the file LICENSE in this distribution or at
 * http://www.rt-thread.org/license/LICENSE
 *
 * Change Logs:
 * Date           Author       Notes
 * 2009-09-22     Bernard      add board.h to this bsp
 * 2018-09-02     xuzhuoyi     modify for TMS320F28379D version
 */
#include <rtthread.h>
#include "board.h"
#include "F28x_Project.h"

extern interrupt void RTOSINT_Handler();


/**
 * This is the timer interrupt service routine.
 *
 */
interrupt void cpu_timer2_isr (void)
{
    CpuTimer2Regs.TCR.all = 0x8000;
    /* enter interrupt */
    rt_interrupt_enter();

    rt_tick_increase();
    /* leave interrupt */
    rt_interrupt_leave();
}


/**
 * This function will initial STM32 board.
 */
void rt_hw_board_init()
{
    /* Configure the system clock @ 84 Mhz */
    InitSysCtrl();

    DINT;
    InitPieCtrl();

    IER = 0x0000;
    IFR = 0x0000;

    InitPieVectTable();

    EALLOW;  // This is needed to write to EALLOW protected registers
    PieVectTable.TIMER2_INT = &cpu_timer2_isr;
    PieVectTable.RTOS_INT = &RTOSINT_Handler;
    EDIS;

    InitCpuTimers();
    ConfigCpuTimer(&CpuTimer2, 200, 1000000 / RT_TICK_PER_SECOND);
    CpuTimer2Regs.TCR.all = 0x4000;
    IER |= M_INT14;

#ifdef RT_USING_HEAP
    rt_system_heap_init((void *)HEAP_BEGIN, (void *)HEAP_END);
#endif
#ifdef RT_USING_COMPONENTS_INIT
    rt_components_board_init();
#endif
#ifdef RT_USING_CONSOLE
    rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
#endif
}