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/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2022-05-16 shelton first version
*/
#include "drv_common.h"
#ifdef RT_USING_SERIAL
#include "drv_usart.h"
#endif
#define DBG_TAG "drv_common"
#define DBG_LVL DBG_INFO
#include <rtdbg.h>
#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 */
extern __IO uint32_t uwTick;
static uint32_t _systick_ms = 1;
/* systick configuration */
void rt_hw_systick_init(void)
{
systick_clock_source_config(SYSTICK_CLOCK_SOURCE_AHBCLK_NODIV);
SysTick_Config(system_core_clock / RT_TICK_PER_SECOND);
nvic_irq_enable(SysTick_IRQn, 0, 0);
_systick_ms = 1000u / RT_TICK_PER_SECOND;
if(_systick_ms == 0)
_systick_ms = 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();
}
/**
* @brief this function is executed in case of error occurrence.
* @param none
* @retval none
*/
void _Error_Handler(char *s, int num)
{
/* User can add his own implementation to report the HAL error return state */
LOG_E("Error_Handler at file:%s num:%d", s, num);
while (1)
{
}
}
/**
* this function will delay for some us.
*
* @param us the delay time of us
*/
void rt_hw_us_delay(rt_uint32_t us)
{
rt_uint32_t ticks;
rt_uint32_t told, tnow, tcnt = 0;
rt_uint32_t reload = SysTick->LOAD;
ticks = us * reload / (1000000 / RT_TICK_PER_SECOND);
told = SysTick->VAL;
while (1)
{
tnow = SysTick->VAL;
if (tnow != told)
{
if (tnow < told)
{
tcnt += told - tnow;
}
else
{
tcnt += reload - tnow + told;
}
told = tnow;
if (tcnt >= ticks)
{
break;
}
}
}
}
/**
* this function will initial at32 board.
*/
rt_weak void rt_hw_board_init()
{
/* system clock initialization */
system_clock_config();
/* configure nvic priority group */
nvic_priority_group_config(NVIC_PRIORITY_GROUP_4);
/* systick init */
rt_hw_systick_init();
/* 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_usart_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
}
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