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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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