rt-thread-official/bsp/hc32/libraries/hc32_drivers/drv_common.c

/*
 * Copyright (C) 2022-2024, Xiaohua Semiconductor Co., Ltd.
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2023-12-16     CDT          first version
 */

#include "board.h"

#define DBG_TAG    "drv_common"
#define DBG_LVL    DBG_INFO
#include <rtdbg.h>

#ifdef RT_USING_PIN
#include <drv_gpio.h>
#endif

#ifdef RT_USING_SERIAL
#ifdef RT_USING_SERIAL_V2
#include <drv_usart_v2.h>
#else
#include <drv_usart.h>
#endif /* RT_USING_SERIAL */
#endif /* RT_USING_SERIAL_V2 */

#ifdef RT_USING_FINSH
#include <finsh.h>
static void reboot(uint8_t argc, char **argv)
{
    rt_hw_cpu_reset();
}
MSH_CMD_EXPORT(reboot, Reboot System);
#endif /* RT_USING_FINSH */

/**
  * This function is executed in case of error occurrence.
  */
void _Error_Handler(char *s, int num)
{
    LOG_E("Error_Handler at file:%s num:%d", s, num);
    while (1)
    {
    }
}

/**
 * This is the timer interrupt service routine.
 */
void SysTick_Handler(void)
{
    /* enter interrupt */
    rt_interrupt_enter();

    rt_tick_increase();

    /* leave interrupt */
    rt_interrupt_leave();
}

/**
 * Configures the SysTick for OS tick.
 */
void  SysTick_Configuration(void)
{
    stc_clock_freq_t stcClkFreq;
    rt_uint32_t cnts;

    CLK_GetClockFreq(&stcClkFreq);

    cnts = (rt_uint32_t)stcClkFreq.u32HclkFreq / RT_TICK_PER_SECOND;

    SysTick_Config(cnts);
}

/**
 * This function will initial HC32 board.
 */
void rt_hw_board_init()
{
    PeripheralRegister_Unlock();

    SystemBase_Config();
    SystemClock_Config();
    PeripheralClock_Config();
    /* Configure the SysTick */
    SysTick_Configuration();

    /* Heap initialization */
#if defined(RT_USING_HEAP)
    rt_system_heap_init((void *)HEAP_BEGIN, (void *)HEAP_END);
#endif

#ifdef RT_USING_PIN
    rt_hw_pin_init();
#endif

#ifdef RT_USING_SERIAL
    rt_hw_usart_init();
#endif

#if defined(RT_USING_CONSOLE) && defined(RT_USING_DEVICE)
    rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
#endif

    /* Board underlying hardware initialization */
#ifdef RT_USING_COMPONENTS_INIT
    rt_components_board_init();
#endif
}

void rt_hw_us_delay(rt_uint32_t us)
{
    uint32_t start, now, delta, reload, us_tick;
    start = SysTick->VAL;
    reload = SysTick->LOAD;
    us_tick = SystemCoreClock / 1000000UL;

    do
    {
        now = SysTick->VAL;
        delta = start > now ?  start - now : reload + start - now;
    }
    while (delta < us_tick * us);
}

/*@}*/