106 lines
2.2 KiB
C
106 lines
2.2 KiB
C
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/*
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* Copyright (c) 2006-2024, RT-Thread Development Team
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* Copyright (c) 2019-2020, Arm Limited. All rights reserved.
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2024-02-06 yandld first implementation
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*/
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#include <rthw.h>
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#include <rtthread.h>
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#include "board.h"
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#include "clock_config.h"
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#include "drv_uart.h"
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/**
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* This is the timer interrupt service routine.
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*
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*/
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void SysTick_Handler(void)
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{
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/* enter interrupt */
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rt_interrupt_enter();
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rt_tick_increase();
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/* leave interrupt */
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rt_interrupt_leave();
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}
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/**
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* This function will initial board.
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*/
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void rt_hw_board_init()
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{
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BOARD_InitBootPins();
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/* This init has finished in secure side of TF-M */
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BOARD_InitBootClocks();
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SysTick_Config(SystemCoreClock / RT_TICK_PER_SECOND);
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/* set pend exception priority */
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NVIC_SetPriority(PendSV_IRQn, (1 << __NVIC_PRIO_BITS) - 1);
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/*init uart device*/
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rt_hw_uart_init();
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#if defined(RT_USING_CONSOLE) && defined(RT_USING_DEVICE)
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rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
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#endif
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#ifdef RT_USING_COMPONENTS_INIT
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/* initialization board with RT-Thread Components */
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rt_components_board_init();
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#endif
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#ifdef RT_USING_HEAP
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rt_kprintf("sram heap, begin: 0x%p, end: 0x%p\n", HEAP_BEGIN, HEAP_END);
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rt_system_heap_init((void *)HEAP_BEGIN, (void *)(HEAP_END));
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#endif
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}
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/**
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* This function will called when memory fault.
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*/
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void MemManage_Handler(void)
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{
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extern void HardFault_Handler(void);
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rt_kprintf("Memory Fault!\n");
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HardFault_Handler();
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}
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void rt_hw_us_delay(rt_uint32_t us)
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{
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rt_uint32_t ticks;
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rt_uint32_t told, tnow, tcnt = 0;
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rt_uint32_t reload = SysTick->LOAD;
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ticks = us * reload / (1000000 / RT_TICK_PER_SECOND);
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told = SysTick->VAL;
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while (1)
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{
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tnow = SysTick->VAL;
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if (tnow != told)
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{
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if (tnow < told)
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{
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tcnt += told - tnow;
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}
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else
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{
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tcnt += reload - tnow + told;
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}
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told = tnow;
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if (tcnt >= ticks)
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{
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break;
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}
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}
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}
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}
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