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  * 2020-04-29     supperthomas first version
9  *
10  */
11 #include <rtthread.h>
12 #include <rthw.h>
13 #include <nrfx_systick.h>
14 
15 #include "board.h"
16 #include "drv_uart.h"
17 #include <nrfx_clock.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 
clk_event_handler(nrfx_clock_evt_type_t event)34 static void clk_event_handler(nrfx_clock_evt_type_t event){}
35 
SysTick_Configuration(void)36 void SysTick_Configuration(void)
37 {
38     nrfx_clock_init(clk_event_handler);
39     nrfx_clock_enable();
40     nrfx_clock_lfclk_start();
41     /* Set interrupt priority */
42     NVIC_SetPriority(SysTick_IRQn, 0xf);
43 
44     /* Configure SysTick to interrupt at the requested rate. */
45     nrf_systick_load_set(SystemCoreClock / RT_TICK_PER_SECOND);
46     nrf_systick_val_clear();
47     nrf_systick_csr_set(NRF_SYSTICK_CSR_CLKSOURCE_CPU | NRF_SYSTICK_CSR_TICKINT_ENABLE
48                         | NRF_SYSTICK_CSR_ENABLE);
49 
50 }
51 
52 
rt_hw_board_init(void)53 void rt_hw_board_init(void)
54 {
55     rt_hw_interrupt_enable(0);
56 
57     SysTick_Configuration();
58 
59 #if defined(RT_USING_HEAP)
60     rt_system_heap_init((void *)HEAP_BEGIN, (void *)HEAP_END);
61 #endif
62 
63 #ifdef RT_USING_SERIAL
64     rt_hw_uart_init();
65 #endif
66 
67 #if defined(RT_USING_CONSOLE) && defined(RT_USING_DEVICE)
68     rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
69 #endif
70 
71 #ifdef RT_USING_COMPONENTS_INIT
72     rt_components_board_init();
73 #endif
74 
75 #ifdef BSP_USING_SOFTDEVICE
76     extern uint32_t  Image$$RW_IRAM1$$Base;
77     uint32_t const *const m_ram_start  = &Image$$RW_IRAM1$$Base;
78     if ((uint32_t)m_ram_start == 0x20000000)
79     {
80         rt_kprintf("\r\n using softdevice the RAM couldn't be %p,please use the templete from package\r\n", m_ram_start);
81         while (1);
82     }
83     else
84     {
85         rt_kprintf("\r\n using softdevice the RAM at %p\r\n", m_ram_start);
86     }
87 #endif
88 
89 }
90 
91