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/*
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*********************************************************************************************************
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* INCLUDE FILES
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*********************************************************************************************************
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*/
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#define BSP_MODULE
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#include <bsp.h>
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/*
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*********************************************************************************************************
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* LOCAL TABLES
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*********************************************************************************************************
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*/
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/*
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*********************************************************************************************************
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* LOCAL GLOBAL VARIABLES
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*********************************************************************************************************
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*/
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/*
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*********************************************************************************************************
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* LOCAL FUNCTION PROTOTYPES
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*********************************************************************************************************
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*/
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/** This function will initial STM32 board**/
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void rt_hw_board_init()
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{
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BSP_Init();
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//add for finsh
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rt_hw_usart_init();
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rt_console_set_device(RT_CONSOLE_DEVICE_NAME);
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}
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/**
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* RCC configuration
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*/
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static void RCC_Configuration(void)
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{
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ErrorStatus HSEStartUpStatus;
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//使能外部晶振
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RCC_HSEConfig(RCC_HSE_ON);
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//等待外部晶振稳定
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HSEStartUpStatus = RCC_WaitForHSEStartUp();
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//如果外部晶振启动成功，则进行下一步操作
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if(HSEStartUpStatus==SUCCESS)
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{
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//设置HCLK（AHB时钟）=SYSCLK = 72MHz
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RCC_HCLKConfig(RCC_SYSCLK_Div1);
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//PCLK1(APB1) = HCLK/2,RCC_HCLK_Div2——>PCLK1=36MHz,最大36MHz
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RCC_PCLK1Config(RCC_HCLK_Div2);
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//PCLK2(APB2) = HCLK = 72MHz
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RCC_PCLK2Config(RCC_HCLK_Div1);
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//FLASH时序控制
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//推荐值：SYSCLK = 0~24MHz Latency=0
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// SYSCLK = 24~48MHz Latency=1
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// SYSCLK = 48~72MHz Latency=2
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FLASH_SetLatency(FLASH_Latency_2);
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//开启FLASH预取指功能
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FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);
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//PLL设置 SYSCLK/1 * 9 = 8*1*9 = 72MHz
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RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);
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//启动PLL
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RCC_PLLCmd(ENABLE);
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//等待PLL稳定
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while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET);
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//系统时钟SYSCLK来自PLL输出
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RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
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//切换时钟后等待系统时钟稳定
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while(RCC_GetSYSCLKSource()!=0x08);
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/*
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//设置系统SYSCLK时钟为HSE输入
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RCC_SYSCLKConfig(RCC_SYSCLKSource_HSE);
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//等待时钟切换成功
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while(RCC_GetSYSCLKSource() != 0x04);
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*/
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}
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//下面是给各模块开启时钟
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//启动GPIO
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB | \
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RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOD | \
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RCC_APB2Periph_GPIOE | RCC_APB2Periph_GPIOG,
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ENABLE);
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//启动AFIO
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
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//启动USART1时钟
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
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//启动USART2时钟
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
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//启动DMA时钟
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RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
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/* Enable ADC1 and GPIOC clock */
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
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/* Enable WWDG clock */
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RCC_APB1PeriphClockCmd(RCC_APB1Periph_WWDG, ENABLE);
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}
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/**
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* NVIC Configuration
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*/
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static void NVIC_Configuration(void)
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{
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NVIC_InitTypeDef NVIC_InitStructure;
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#if defined(VECT_TAB_RAM)
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// Set the Vector Table base location at 0x20000000
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NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x00);
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#elif defined(VECT_TAB_FLASH)
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// Set the Vector Table base location at 0x08000000
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NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x00);
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#elif defined(VECT_TAB_USER)
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// Set the Vector Table base location by user
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NVIC_SetVectorTable(NVIC_VectTab_FLASH, USER_VECTOR_TABLE);
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#endif
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//设置NVIC优先级分组为Group2：0-3抢占式优先级，0-3的响应式优先级
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NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
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//窗口看门狗中断配置
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NVIC_InitStructure.NVIC_IRQChannel = WWDG_IRQn;
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
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NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
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NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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NVIC_Init(&NVIC_InitStructure);
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}
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/**
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* GPIO Configuration
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*/
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static void GPIO_Configuration(void)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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GPIO_Init(GPIOB, &GPIO_InitStructure);
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GPIO_Init(GPIOC, &GPIO_InitStructure);
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GPIO_Init(GPIOD, &GPIO_InitStructure);
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GPIO_Init(GPIOE, &GPIO_InitStructure);
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GPIO_Init(GPIOF, &GPIO_InitStructure);
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GPIO_Init(GPIOG, &GPIO_InitStructure);
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/******************系统运行LED指示灯配置*******************/
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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}
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/**
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* WWDG Configuration
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*/
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static void WWDG_Configuration(void)
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{
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//在PCLK1驱动看门狗计时之前,首先要经过既定的4096分频(详情查看STM32技术参考手册),再经过Prescaler = 8分频
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/* WWDG clock counter = (PCLK1/4096)/8 = 1098.6 Hz (~0.910 ms) */
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WWDG_SetPrescaler(WWDG_Prescaler_8);
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/* Set Window value to 127 */
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//范围：1ms-58ms
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WWDG_SetWindowValue(0x7F);
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/* Enable WWDG and set counter value to 127, WWDG timeout = ~4 ms * (0x7F - 0x3F) = 58.24 ms */
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WWDG_Enable(127);
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/* Clear EWI flag */
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WWDG_ClearFlag();
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/* Enable EW interrupt */
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WWDG_EnableIT();
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}
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/**
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* IWDG_Configuration
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*/
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static void IWDG_Configuration(void)
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{
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IWDG_WriteAccessCmd(IWDG_WriteAccess_Enable);//使能对IWDG->PR和IWDG->RLR的写
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IWDG_SetPrescaler(IWDG_Prescaler_64);//64分频
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IWDG_SetReload(1875);
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IWDG_ReloadCounter();
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IWDG_Enable();
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}
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/**
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* feed IWDG dog
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*/
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void IWDG_Feed(void)
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{
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IWDG_ReloadCounter();//reload
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}
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/**
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* SysTick Configuration
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*/
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void SysTick_Configuration(void)
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{
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RCC_ClocksTypeDef rcc_clocks;
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rt_uint32_t cnts;
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RCC_GetClocksFreq(&rcc_clocks);
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cnts = (rt_uint32_t)rcc_clocks.HCLK_Frequency / RT_TICK_PER_SECOND;
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SysTick_Config(cnts);
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SysTick_CLKSourceConfig(SysTick_CLKSource_HCLK);
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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 rt_hw_timer_handler(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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void assert_failed(u8* file, u32 line)
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{
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/* User can add his own implementation to report the file name and line number,
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ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
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/* Infinite loop */
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rt_kprintf("assert failed at %s:%d \n", file, line);
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while (1) {
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}
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}
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/*
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*********************************************************************************************************
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* LOCAL CONFIGURATION ERRORS
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*********************************************************************************************************
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*/
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/*
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*********************************************************************************************************
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* BSP_Init()
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*
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* Description : Initialize the Board Support Package (BSP).
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*
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* Argument(s) : none.
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*
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* Return(s) : none.
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*
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* Caller(s) : Application.
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*
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* Note(s) : (1) This function SHOULD be called before any other BSP function is called.
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*********************************************************************************************************
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*/
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void BSP_Init (void)
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{
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RCC_Configuration();
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NVIC_Configuration();
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SysTick_Configuration();
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GPIO_Configuration();
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// TODO Now temporary comment this code, the official version will open his
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// IWDG_Configuration();
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}
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