1 /*
2 * Copyright (c) 2006-2022, RT-Thread Development Team
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 *
6 * Change Logs:
7 * Date Author Notes
8 * 2022-02-22 airm2m first version
9 */
10
11 #include "drv_common.h"
12 #include "board.h"
13
14 #ifdef RT_USING_SERIAL
15 #ifdef RT_USING_SERIAL_V2
16 #include "drv_usart_v2.h"
17 #else
18 #include "drv_usart.h"
19 #endif /* RT_USING_SERIAL */
20 #endif /* RT_USING_SERIAL_V2 */
21
22 #define DBG_TAG "drv_common"
23 #define DBG_LVL DBG_INFO
24 #include <rtdbg.h>
25
26 #ifdef RT_USING_FINSH
27 #include <finsh.h>
reboot(uint8_t argc,char ** argv)28 static void reboot(uint8_t argc, char **argv)
29 {
30 rt_hw_cpu_reset();
31 }
32 MSH_CMD_EXPORT(reboot, Reboot System);
33 #endif /* RT_USING_FINSH */
34
35
36
37 /* SysTick configuration */
rt_hw_systick_init(void)38 void rt_hw_systick_init(void)
39 {
40 SysTick_Config(SystemCoreClock / RT_TICK_PER_SECOND);
41
42 NVIC_SetPriority(SysTick_IRQn, 0xFF);
43 }
44
45 /**
46 * This is the timer interrupt service routine.
47 *
48 */
SysTick_Handler(void)49 void SysTick_Handler(void)
50 {
51 /* enter interrupt */
52 rt_interrupt_enter();
53 rt_tick_increase();
54 /* leave interrupt */
55 rt_interrupt_leave();
56 }
57
58 /**
59 * @brief This function is executed in case of error occurrence.
60 * @param None
61 * @retval None
62 */
_Error_Handler(char * s,int num)63 void _Error_Handler(char *s, int num)
64 {
65 /* USER CODE BEGIN Error_Handler */
66 /* User can add his own implementation to report the HAL error return state */
67 LOG_E("Error_Handler at file:%s num:%d", s, num);
68 while (1)
69 {
70 }
71 /* USER CODE END Error_Handler */
72 }
73
74 /**
75 * This function will delay for some us.
76 *
77 * @param us the delay time of us
78 */
rt_hw_us_delay(rt_uint32_t us)79 void rt_hw_us_delay(rt_uint32_t us)
80 {
81 rt_uint32_t ticks;
82 rt_uint32_t told, tnow, tcnt = 0;
83 rt_uint32_t reload = SysTick->LOAD;
84
85 ticks = us * reload / (1000000 / RT_TICK_PER_SECOND);
86 told = SysTick->VAL;
87 while (1)
88 {
89 tnow = SysTick->VAL;
90 if (tnow != told)
91 {
92 if (tnow < told)
93 {
94 tcnt += told - tnow;
95 }
96 else
97 {
98 tcnt += reload - tnow + told;
99 }
100 told = tnow;
101 if (tcnt >= ticks)
102 {
103 break;
104 }
105 }
106 }
107 }
108