1 /*
2 * Copyright (c) 2006-2025, RT-Thread Development Team
3 * Copyright (c) 2019-2020, Arm Limited. All rights reserved.
4 *
5 * SPDX-License-Identifier: Apache-2.0
6 *
7 * Change Logs:
8 * Date Author Notes
9 * 2024-02-06 yandld first implementation
10 */
11
12 #include <rthw.h>
13 #include <rtthread.h>
14
15 #include "board.h"
16 #include "clock_config.h"
17 #include "drv_uart.h"
18
19 /**
20 * This is the timer interrupt service routine.
21 *
22 */
SysTick_Handler(void)23 void SysTick_Handler(void)
24 {
25 /* enter interrupt */
26 rt_interrupt_enter();
27
28 rt_tick_increase();
29
30 /* leave interrupt */
31 rt_interrupt_leave();
32 }
33
34 /**
35 * This function will initial board.
36 */
rt_hw_board_init()37 void rt_hw_board_init()
38 {
39 BOARD_InitBootPins();
40
41 /* This init has finished in secure side of TF-M */
42 BOARD_InitBootClocks();
43
44 SysTick_Config(SystemCoreClock / RT_TICK_PER_SECOND);
45 /* set pend exception priority */
46 NVIC_SetPriority(PendSV_IRQn, (1 << __NVIC_PRIO_BITS) - 1);
47
48 /*init uart device*/
49 rt_hw_uart_init();
50
51 #if defined(RT_USING_CONSOLE) && defined(RT_USING_DEVICE)
52 rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
53 #endif
54
55 #ifdef RT_USING_COMPONENTS_INIT
56 /* initialization board with RT-Thread Components */
57 rt_components_board_init();
58 #endif
59
60 #ifdef RT_USING_HEAP
61 rt_kprintf("sram heap, begin: 0x%p, end: 0x%p\n", HEAP_BEGIN, HEAP_END);
62 rt_system_heap_init((void *)HEAP_BEGIN, (void *)(HEAP_END));
63 #endif
64 }
65
66 /**
67 * This function will called when memory fault.
68 */
MemManage_Handler(void)69 void MemManage_Handler(void)
70 {
71 extern void HardFault_Handler(void);
72
73 rt_kprintf("Memory Fault!\n");
74 HardFault_Handler();
75 }
76
rt_hw_us_delay(rt_uint32_t us)77 void rt_hw_us_delay(rt_uint32_t us)
78 {
79 rt_uint32_t ticks;
80 rt_uint32_t told, tnow, tcnt = 0;
81 rt_uint32_t reload = SysTick->LOAD;
82
83 ticks = us * reload / (1000000 / RT_TICK_PER_SECOND);
84 told = SysTick->VAL;
85 while (1)
86 {
87 tnow = SysTick->VAL;
88 if (tnow != told)
89 {
90 if (tnow < told)
91 {
92 tcnt += told - tnow;
93 }
94 else
95 {
96 tcnt += reload - tnow + told;
97 }
98 told = tnow;
99 if (tcnt >= ticks)
100 {
101 break;
102 }
103 }
104 }
105 }
106