115 lines
2.7 KiB
C
115 lines
2.7 KiB
C
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/*
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* File : board.c
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* Copyright (C) 2018 Shanghai Eastsoft Microelectronics Co., Ltd.
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2019-01-23 wangyq the first version
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*/
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#include <rthw.h>
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#include <rtthread.h>
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#include "board.h"
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#include "drv_usart.h"
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#include "drv_gpio.h"
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#include <ald_cmu.h>
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#include <ald_gpio.h>
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/**
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* @addtogroup es32f0
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*/
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/*@{*/
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/*******************************************************************************
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* Function Name : NVIC_Configuration
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* Description : Configures Vector Table base location.
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* Input : None
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* Output : None
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* Return : None
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*******************************************************************************/
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void NVIC_Configuration(void)
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{
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}
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/*******************************************************************************
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* Function Name : SystemClock_Configuration
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* Description : Configures the System Clock.
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* Input : None
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* Output : None
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* Return : None
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*******************************************************************************/
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void SystemClock_Config(void)
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{
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/* hosc 8MHz, from hosc/2 pll to 48MHz */
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cmu_pll1_config(CMU_PLL1_INPUT_HOSC_2, CMU_PLL1_OUTPUT_48M);
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/* MCLK 48MHz*/
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cmu_clock_config(CMU_CLOCK_PLL1, 48000000);
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/* SYSCLK 24MHz */
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cmu_div_config(CMU_SYS, CMU_DIV_2);
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}
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/*******************************************************************************
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* Function Name : SysTick_Configuration
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* Description : Configures the SysTick for OS tick.
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* Input : None
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* Output : None
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* Return : None
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*******************************************************************************/
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void SysTick_Configuration(void)
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{
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rt_uint32_t _mclk;
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rt_uint32_t _sys_div = READ_BITS(CMU->CFGR, CMU_CFGR_SYSDIV_MSK, CMU_CFGR_SYSDIV_POSS);
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/* get hrc clock*/
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_mclk = cmu_get_clock();
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/* SYSCLK = MCLK/SYSDIV */
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SysTick_Config(_mclk / (RT_TICK_PER_SECOND << _sys_div));
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}
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/**
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* This is the timer interrupt service routine.
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*
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*/
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void systick_irq_cbk(void)
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{
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/* enter interrupt */
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rt_interrupt_enter();
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rt_tick_increase();
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/* leave interrupt */
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rt_interrupt_leave();
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}
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/*@}*/
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/**
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* This function will initial ES32F0 board.
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*/
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void rt_hw_board_init(void)
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{
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/* NVIC Configuration */
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NVIC_Configuration();
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/*System Clock Configuration */
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SystemClock_Config();
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/* Configure the SysTick */
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SysTick_Configuration();
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#ifdef RT_USING_HEAP
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rt_system_heap_init((void *)HEAP_BEGIN, (void *)HEAP_END);
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#endif
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#ifdef RT_USING_COMPONENTS_INIT
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rt_components_board_init();
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#endif
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#ifdef RT_USING_CONSOLE
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rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
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#endif
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}
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