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/*
* Copyright (c) 2006-2023, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2020-04-22 hqfang first version
*
*/
#include <rtthread.h>
#include <rtdevice.h>
#include "board.h"
#include "cpuport.h"
#define SYSTICK_TICK_CONST (SOC_TIMER_FREQ / RT_TICK_PER_SECOND)
#define RT_KERNEL_INTERRUPT_LEVEL 1
#ifdef RT_USING_SERIAL
#include <drv_uart.h>
#endif
/** _end symbol defined in linker script of Nuclei SDK */
extern void *_end;
/** _heap_end symbol defined in linker script of Nuclei SDK */
extern void *_heap_end;
#define HEAP_BEGIN &_end
#define HEAP_END &_heap_end
/*
* - Implemented and defined in Nuclei SDK system_<Device>.c file
* - Required macro NUCLEI_BANNER set to 0
*/
extern void _init(void);
rt_weak void rt_hw_ticksetup(void)
{
uint64_t ticks = SYSTICK_TICK_CONST;
/* Make SWI and SysTick the lowest priority interrupts. */
/* Stop and clear the SysTimer. SysTimer as Non-Vector Interrupt */
SysTick_Config(ticks);
ECLIC_DisableIRQ(SysTimer_IRQn);
ECLIC_SetLevelIRQ(SysTimer_IRQn, RT_KERNEL_INTERRUPT_LEVEL);
ECLIC_SetShvIRQ(SysTimer_IRQn, ECLIC_NON_VECTOR_INTERRUPT);
ECLIC_EnableIRQ(SysTimer_IRQn);
/* Set SWI interrupt level to lowest level/priority, SysTimerSW as Vector Interrupt */
ECLIC_SetShvIRQ(SysTimerSW_IRQn, ECLIC_VECTOR_INTERRUPT);
ECLIC_SetLevelIRQ(SysTimerSW_IRQn, RT_KERNEL_INTERRUPT_LEVEL);
ECLIC_EnableIRQ(SysTimerSW_IRQn);
}
#define SysTick_Handler eclic_mtip_handler
/**
* @brief This is the timer interrupt service routine.
*
*/
void SysTick_Handler(void)
{
/* Reload systimer */
SysTick_Reload(SYSTICK_TICK_CONST);
/* enter interrupt */
rt_interrupt_enter();
/* tick increase */
rt_tick_increase();
/* leave interrupt */
rt_interrupt_leave();
}
/**
* @brief Setup hardware board for rt-thread
*
*/
void rt_hw_board_init(void)
{
/* OS Tick Configuration */
rt_hw_ticksetup();
#ifdef RT_USING_HEAP
rt_system_heap_init((void *) HEAP_BEGIN, (void *) HEAP_END);
#endif
_init(); // __libc_init_array is not used in RT-Thread
/* UART driver initialization is open by default */
#ifdef RT_USING_SERIAL
rt_hw_uart_init();
#endif
/* Set the shell console output device */
#if defined(RT_USING_CONSOLE) && defined(RT_USING_DEVICE)
rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
#endif
/* Board underlying hardware initialization */
#ifdef RT_USING_COMPONENTS_INIT
rt_components_board_init();
#endif
}
/******************** end of file *******************/
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