rt-thread-official/bsp/wch/arm/Libraries/ch32_drivers/drv_common.c

/*
 * Copyright (c) 2006-2022, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author            Notes
 * 2021-08-10     charlown           first version
 */

#include <rtthread.h>
#include <rtdevice.h>
#include <rthw.h>
#include "board.h"
#include "drv_common.h"

#ifdef RT_USING_PIN
#include "drv_gpio.h"
#endif
#ifdef RT_USING_SERIAL
#include "drv_uart.h"
#endif

#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 */

void rt_hw_us_delay(rt_uint32_t us)
{
    rt_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);
}

void SystemClock_Config(void)
{
    SysTick_Config(ch32_get_sysclock_frequency() / RT_TICK_PER_SECOND);
    NVIC_SetPriority(SysTick_IRQn, 0);
}

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

    rt_tick_increase();

    /* leave interrupt */
    rt_interrupt_leave();
}

/**
 * @brief  This function is executed in case of error occurrence.
 * @param  None
 * @retval None
 */
void _Error_Handler(char *s, int num)
{
    /* USER CODE BEGIN Error_Handler */
    /* User can add his own implementation to report the HAL error return state */
    while (1)
    {
    }
    /* USER CODE END Error_Handler */
}

void rt_hw_board_init()
{

    /* System clock initialization */
    SystemClock_Config();

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

    /* Pin driver initialization is open by default */
#ifdef RT_USING_PIN
    rt_hw_pin_init();
#endif

    /* USART driver initialization is open by default */
#ifdef RT_USING_SERIAL
    rt_hw_uart_init();
#endif

    /* Set the shell console output device */
#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
}