1 /*
2 * Copyright (c) 2006-2024 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 edma_config_t userConfig = {0};
42 EDMA_GetDefaultConfig(&userConfig);
43 EDMA_Init(DMA0, &userConfig);
44
45 /* This init has finished in secure side of TF-M */
46 BOARD_InitBootClocks();
47
48 SysTick_Config(SystemCoreClock / RT_TICK_PER_SECOND);
49 /* set pend exception priority */
50 NVIC_SetPriority(PendSV_IRQn, (1 << __NVIC_PRIO_BITS) - 1);
51
52 /*init uart device*/
53 rt_hw_uart_init();
54
55 #if defined(RT_USING_CONSOLE) && defined(RT_USING_DEVICE)
56 rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
57 #endif
58
59 #ifdef RT_USING_COMPONENTS_INIT
60 /* initialization board with RT-Thread Components */
61 rt_components_board_init();
62 #endif
63
64 #ifdef RT_USING_HEAP
65 rt_kprintf("sram heap, begin: 0x%p, end: 0x%p\n", HEAP_BEGIN, HEAP_END);
66 rt_system_heap_init((void *)HEAP_BEGIN, (void *)(HEAP_END));
67 #endif
68 }
69
70 /**
71 * This function will called when memory fault.
72 */
MemManage_Handler(void)73 void MemManage_Handler(void)
74 {
75 extern void HardFault_Handler(void);
76
77 rt_kprintf("Memory Fault!\n");
78 HardFault_Handler();
79 }
80
rt_hw_us_delay(rt_uint32_t us)81 void rt_hw_us_delay(rt_uint32_t us)
82 {
83 rt_uint32_t ticks;
84 rt_uint32_t told, tnow, tcnt = 0;
85 rt_uint32_t reload = SysTick->LOAD;
86
87 ticks = us * reload / (1000000 / RT_TICK_PER_SECOND);
88 told = SysTick->VAL;
89 while (1)
90 {
91 tnow = SysTick->VAL;
92 if (tnow != told)
93 {
94 if (tnow < told)
95 {
96 tcnt += told - tnow;
97 }
98 else
99 {
100 tcnt += reload - tnow + told;
101 }
102 told = tnow;
103 if (tcnt >= ticks)
104 {
105 break;
106 }
107 }
108 }
109 }
110