199 lines
5.1 KiB
C
199 lines
5.1 KiB
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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* Licensed under the Apache License, Version 2.0 (the License); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an AS IS BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Change Logs:
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* Date Author Notes
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* 2020-01-14 wangyq the first version
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* 2021-04-20 liuhy the second 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_uart.h"
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#include "drv_gpio.h"
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#include <ald_gpio.h>
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/**
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* @addtogroup es32f3
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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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SYSCFG_UNLOCK();
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#if ES_CMU_LRC_EN
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SET_BIT(CMU->CLKENR, CMU_CLKENR_LRCEN_MSK);
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#else
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CLEAR_BIT(CMU->CLKENR, CMU_CLKENR_LRCEN_MSK);
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#endif /*ES_CMU_LRC_EN*/
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#if ES_CMU_LOSC_EN
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SET_BIT(CMU->CLKENR, CMU_CLKENR_LOSCEN_MSK);
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#else
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CLEAR_BIT(CMU->CLKENR, CMU_CLKENR_LOSCEN_MSK);
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#endif /*ES_CMU_LOSC_EN*/
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#if ES_CMU_HRC_EN
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SET_BIT(CMU->CLKENR, CMU_CLKENR_HRCEN_MSK);
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#else
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CLEAR_BIT(CMU->CLKENR, CMU_CLKENR_HRCEN_MSK);
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#endif /*ES_CMU_HRC_EN*/
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#if ES_CMU_HOSC_EN
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SET_BIT(CMU->CLKENR, CMU_CLKENR_HOSCEN_MSK);
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#else
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CLEAR_BIT(CMU->CLKENR, CMU_CLKENR_HOSCEN_MSK);
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#endif /*ES_CMU_HOSC_EN*/
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SYSCFG_LOCK();
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#if ES_CMU_PLL1_EN
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/*PLL的源必须是4M*/
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ald_cmu_pll1_config(ES_PLL1_REFER_CLK, ES_PLL1_OUT_CLK);
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#if ES_CMU_PLL1_SAFE_EN
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ald_cmu_pll_safe_config(ENABLE);
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#else
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ald_cmu_pll_safe_config(DISABLE);
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#endif
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#else
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CLEAR_BIT(CMU->CLKENR, CMU_CLKENR_PLL1EN_MSK);
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#endif /*ES_CMU_PLL1_EN*/
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ald_cmu_clock_config(ES_SYS_CLK_SOURSE, ES_SYS_CLK);
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ald_cmu_div_config(CMU_SYS,ES_CMU_SYS_DIV);
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ald_cmu_div_config(CMU_HCLK_1,ES_CMU_HCLK_1_DIV);
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ald_cmu_div_config(CMU_HCLK_2,ES_CMU_HCLK_2_DIV);
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ald_cmu_div_config(CMU_PCLK_1,ES_CMU_PCLK_1_DIV);
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ald_cmu_div_config(CMU_PCLK_2,ES_CMU_PCLK_2_DIV);
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ald_cmu_perh_clock_config(CMU_PERH_ALL, ENABLE);
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/*低功耗时钟使能*/
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#ifdef RT_USING_PM
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SYSCFG_UNLOCK();
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SET_BIT(CMU->LPENR, CMU_LPENR_LRCEN_MSK);
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SET_BIT(CMU->LPENR, CMU_LPENR_LOSCEN_MSK);
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SET_BIT(CMU->LPENR, CMU_LPENR_HRCEN_MSK);
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SET_BIT(CMU->LPENR, CMU_LPENR_HOSCEN_MSK);
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SYSCFG_LOCK();
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#endif
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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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/* ticks = sysclk / RT_TICK_PER_SECOND */
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SysTick_Config(ald_cmu_get_sys_clock() / RT_TICK_PER_SECOND);
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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_Handler(void)
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{
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/* enter interrupt */
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rt_interrupt_enter();
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ald_inc_tick();
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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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* This is the cmu interrupt service.
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*
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*/
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void CMU_Handler(void)
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{
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ald_cmu_irq_handler();
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}
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/*@}*/
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/**
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* This function will initial ES32F3 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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/**
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* This function will delay for some us.
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*
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* @param us the delay time of us
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*/
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void rt_hw_us_delay(rt_uint32_t us)
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{
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unsigned int start, now, delta, reload, us_tick;
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start = SysTick->VAL;
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reload = SysTick->LOAD;
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us_tick = ald_cmu_get_sys_clock() / 1000000UL;
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do
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{
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now = SysTick->VAL;
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delta = start > now ? start - now : reload + start - now;
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}
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while (delta < us_tick * us);
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}
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