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/*
* Copyright (c) 2006-2025, RT-Thread Development Team
* Copyright (c) 2019-2020, Arm Limited. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2024-02-06 yandld first implementation
*/
#include <rthw.h>
#include <rtthread.h>
#include "board.h"
#include "clock_config.h"
#include "drv_uart.h"
/**
* This is the timer interrupt service routine.
*
*/
void SysTick_Handler(void)
{
/* enter interrupt */
rt_interrupt_enter();
rt_tick_increase();
/* leave interrupt */
rt_interrupt_leave();
}
/**
* This function will initial board.
*/
void rt_hw_board_init()
{
BOARD_InitBootPins();
/* This init has finished in secure side of TF-M */
BOARD_InitBootClocks();
SysTick_Config(SystemCoreClock / RT_TICK_PER_SECOND);
/* set pend exception priority */
NVIC_SetPriority(PendSV_IRQn, (1 << __NVIC_PRIO_BITS) - 1);
/*init uart device*/
rt_hw_uart_init();
#if defined(RT_USING_CONSOLE) && defined(RT_USING_DEVICE)
rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
#endif
#ifdef RT_USING_COMPONENTS_INIT
/* initialization board with RT-Thread Components */
rt_components_board_init();
#endif
#ifdef RT_USING_HEAP
rt_kprintf("sram heap, begin: 0x%p, end: 0x%p\n", HEAP_BEGIN, HEAP_END);
rt_system_heap_init((void *)HEAP_BEGIN, (void *)(HEAP_END));
#endif
}
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 called when memory fault.
*/
void MemManage_Handler(void)
{
extern void HardFault_Handler(void);
rt_kprintf("Memory Fault!\n");
HardFault_Handler();
}
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