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/*
* Copyright (c) 2006-2026, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <rthw.h>
#include <rtthread.h>
#include "board.h"
#include "pin_mux.h"
void SysTick_Handler(void)
{
rt_interrupt_enter();
rt_tick_increase();
rt_interrupt_leave();
}
void rt_hw_board_init(void)
{
BOARD_InitBootPins();
BOARD_InitBootClocks();
SysTick_Config(SystemCoreClock / RT_TICK_PER_SECOND);
NVIC_SetPriority(PendSV_IRQn, (1U << __NVIC_PRIO_BITS) - 1U);
#ifdef RT_USING_HEAP
rt_system_heap_init(HEAP_BEGIN, HEAP_END);
#endif
#ifdef RT_USING_COMPONENTS_INIT
rt_components_board_init();
#endif
#if defined(RT_USING_CONSOLE) && defined(RT_USING_DEVICE)
rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
#endif
}
void rt_hw_us_delay(rt_uint32_t us)
{
uint32_t cycles = SystemCoreClock / 1000000U * us;
uint32_t start = SysTick->VAL;
uint32_t elapsed = 0;
uint32_t reload = SysTick->LOAD + 1U;
while (elapsed < cycles)
{
uint32_t now = SysTick->VAL;
elapsed += (start >= now) ? (start - now) : (start + reload - now);
start = now;
}
}
void rt_hw_cpu_reset(void)
{
NVIC_SystemReset();
}
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