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/*
* Copyright (C) 2018 Shanghai Eastsoft Microelectronics Co., Ltd.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Change Logs:
* Date Author Notes
* 2019-01-23 wangyq the first version
* 2019-11-01 wangyq update libraries
* 2021-04-20 liuhy the second version
*/
#include <rthw.h>
#include <rtthread.h>
#include "board.h"
#include "drv_uart.h"
#include "drv_gpio.h"
#include <ald_gpio.h>
/**
* @addtogroup es32f0
*/
/*@{*/
/*******************************************************************************
* Function Name : NVIC_Configuration
* Description : Configures Vector Table base location.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void NVIC_Configuration(void)
{
}
/*******************************************************************************
* Function Name : SystemClock_Configuration
* Description : Configures the System Clock.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void SystemClock_Config(void)
{
SYSCFG_UNLOCK();
#if ES_CMU_LRC_EN
SET_BIT(CMU->CLKENR, CMU_CLKENR_LRCEN_MSK);
#else
CLEAR_BIT(CMU->CLKENR, CMU_CLKENR_LRCEN_MSK);
#endif /*ES_CMU_LRC_EN*/
#if ES_CMU_LOSC_EN
SET_BIT(CMU->CLKENR, CMU_CLKENR_LOSCEN_MSK);
#else
CLEAR_BIT(CMU->CLKENR, CMU_CLKENR_LOSCEN_MSK);
#endif /*ES_CMU_LOSC_EN*/
#if ES_CMU_HRC_EN
SET_BIT(CMU->CLKENR, CMU_CLKENR_HRCEN_MSK);
#else
CLEAR_BIT(CMU->CLKENR, CMU_CLKENR_HRCEN_MSK);
#endif /*ES_CMU_HRC_EN*/
#if ES_CMU_HOSC_EN
SET_BIT(CMU->CLKENR, CMU_CLKENR_HOSCEN_MSK);
#else
CLEAR_BIT(CMU->CLKENR, CMU_CLKENR_HOSCEN_MSK);
#endif /*ES_CMU_HOSC_EN*/
SYSCFG_LOCK();
#if ES_CMU_PLL1_EN
/*PLL的源必须是4M*/
ald_cmu_pll1_config(ES_PLL1_REFER_CLK, ES_PLL1_OUT_CLK);
#if ES_CMU_PLL1_SAFE_EN
ald_cmu_pll_safe_config(ENABLE);
#else
ald_cmu_pll_safe_config(DISABLE);
#endif
#else
CLEAR_BIT(CMU->CLKENR, CMU_CLKENR_PLL1EN_MSK);
#endif /*ES_CMU_PLL1_EN*/
ald_cmu_clock_config(ES_SYS_CLK_SOURSE, ES_SYS_CLK);
ald_cmu_div_config(CMU_SYS,ES_CMU_SYS_DIV);
ald_cmu_div_config(CMU_HCLK_1,ES_CMU_HCLK_1_DIV);
ald_cmu_div_config(CMU_PCLK_1,ES_CMU_PCLK_1_DIV);
ald_cmu_div_config(CMU_PCLK_2,ES_CMU_PCLK_2_DIV);
ald_cmu_perh_clock_config(CMU_PERH_ALL, ENABLE);
/*低功耗时钟使能*/
#ifdef RT_USING_PM
SYSCFG_UNLOCK();
SET_BIT(CMU->LPENR, CMU_LPENR_LRCEN_MSK);
SET_BIT(CMU->LPENR, CMU_LPENR_LOSCEN_MSK);
SET_BIT(CMU->LPENR, CMU_LPENR_HRCEN_MSK);
SET_BIT(CMU->LPENR, CMU_LPENR_HOSCEN_MSK);
SYSCFG_LOCK();
#endif
}
/*******************************************************************************
* Function Name : SysTick_Configuration
* Description : Configures the SysTick for OS tick.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
void SysTick_Configuration(void)
{
/* ticks = sysclk / RT_TICK_PER_SECOND */
SysTick_Config(ald_cmu_get_sys_clock() / RT_TICK_PER_SECOND);
__systick_interval = 1;
}
/**
* This is the timer interrupt service routine.
*
*/
void SysTick_Handler(void)
{
/* enter interrupt */
rt_interrupt_enter();
ald_inc_tick();
rt_tick_increase();
/* leave interrupt */
rt_interrupt_leave();
}
/**
* This is the cmu interrupt service.
*
*/
void CMU_Handler(void)
{
ald_cmu_irq_handler();
}
/*@}*/
/**
* This function will initial ES32F0 board.
*/
void rt_hw_board_init(void)
{
/* NVIC Configuration */
NVIC_Configuration();
/*System Clock Configuration */
SystemClock_Config();
/* Configure the SysTick */
SysTick_Configuration();
#ifdef RT_USING_HEAP
rt_system_heap_init((void *)HEAP_BEGIN, (void *)HEAP_END);
#endif
#ifdef RT_USING_COMPONENTS_INIT
rt_components_board_init();
#endif
#if defined(RT_USING_CONSOLE) && defined(RT_USING_DEVICE)
rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
#endif
}
/**
* This function will delay for some us.
*
* @param us the delay time of us
*/
void rt_hw_us_delay(rt_uint32_t us)
{
unsigned int start, now, delta, reload, us_tick;
start = SysTick->VAL;
reload = SysTick->LOAD;
us_tick = ald_cmu_get_sys_clock() / 1000000UL;
do
{
now = SysTick->VAL;
delta = start > now ? start - now : reload + start - now;
}
while (delta < us_tick * us);
}
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