STM32的嵌套中断系统NVIC和RCC详细整理
voidRCC_SYSCLKConfig(uint32_t RCC_SYSCLKSource);//设置系统时钟(SYSCLK)源
// RCC_SYSCLKSource_HSI,RCC_SYSCLKSource_HSE,RCC_SYSCLKSource_PLLCLK
uint8_tRCC_GetSYSCLKSource(void);// 返回用作系统时钟的时钟源
//返回值:0x00 HSI作为系统时钟,0x04 HSE作为系统时钟,0x08 PLL作为系统时钟
voidRCC_HCLKConfig(uint32_t RCC_SYSCLK);//设置AHB时钟(HCLK)
//输入:RCC_SYSCLK_Div1,RCC_SYSCLK_Div2,RCC_SYSCLK_Div4,RCC_SYSCLK_Div8,RCC_SYSCLK_Div16,
//RCC_SYSCLK_Div32,RCC_SYSCLK_Div64,RCC_SYSCLK_Div128,RCC_SYSCLK_Div256,RCC_SYSCLK_Div512
voidRCC_PCLK1Config(uint32_t RCC_HCLK);// 设置低速AHB时钟(PCLK1)
//输入: RCC_HCLK_Div1, RCC_HCLK_Div2, RCC_HCLK_Div4, RCC_HCLK_Div8, RCC_HCLK_Div16
voidRCC_PCLK2Config(uint32_t RCC_HCLK);//设置高速AHB时钟(PCLK2)
//输入:RCC_HCLK_Div1, RCC_HCLK_Div2, RCC_HCLK_Div4, RCC_HCLK_Div8, RCC_HCLK_Div16
voidRCC_ITConfig(uint8_t RCC_IT, FunctionalState NewState);// 使能或者失能指定的RCC中断
//输入:RCC_IT_LSIRDY
LSI就绪中断->ENABLE或者DISABLE
//RCC_IT_LSERDY
LSE就绪中断,RCC_IT_HSIRDY
HSI就绪中断
//RCC_IT_HSERDY
HSE就绪中断,RCC_IT_PLLRDY
PLL就绪中断
#ifndef STM32F10X_CL
void RCC_USBCLKConfig(uint32_tRCC_USBCLKSource);// 设置USB时钟(USBCLK)
//输入:RCC_USBCLKSource_PLLCLK_1Div5,USB时钟 = PLL时钟除以1.5
RCC_USBCLKSource_PLLCLK_Div1,USB时钟 = PLL时钟
#else
void RCC_OTGFSCLKConfig(uint32_tRCC_OTGFSCLKSource);//
#endif
voidRCC_ADCCLKConfig(uint32_t RCC_PCLK2);// 设置ADC时钟(ADCCLK)
//RCC_PCLK2_Div2,ADC时钟 = PCLK / 2;RCC_PCLK2_Div4,ADC时钟 = PCLK / 4;
//RCC_PCLK2_Div6,ADC时钟 = PCLK / 6;RCC_PCLK2_Div8,ADC时钟 = PCLK / 8
#ifdef STM32F10X_CL
void RCC_I2S2CLKConfig(uint32_tRCC_I2S2CLKSource); //
void RCC_I2S3CLKConfig(uint32_tRCC_I2S3CLKSource);//
#endif
voidRCC_LSEConfig(uint8_t RCC_LSE);// 设置外部低速晶振(LSE)
//输入:RCC_LSE_OFF,LSE晶振OFF;RCC_LSE_ON,LSE晶振ON;
//RCC_LSE_Bypass,LSE晶振被外部时钟旁路
voidRCC_LSICmd(FunctionalState NewState);// 使能或者失能内部低速晶振(LSI)
//输入:ENABLE或者DISABLE
(IWDG运行的话,LSI不能被失能)
voidRCC_RTCCLKConfig(uint32_t RCC_RTCCLKSource);//设置RTC时钟(RTCCLK)源(RTC时钟一经选定即不能更改,除非复位后备域)
//输入:RCC_RTCCLKSource_LSE,选择LSE作为RTC时钟;RCC_RTCCLKSource_LSI,选择LSI作为RTC时钟;RCC_RTCCLKSource_HSE_Div128,选择HSE时钟频率除以128作为RTC时钟
voidRCC_RTCCLKCmd(FunctionalState NewState);// 使能或者失能RTC时钟
//输入:ENABLE或者DISABLE
voidRCC_GetClocksFreq(RCC_ClocksTypeDef* RCC_Clocks);// 返回时钟的频率
//输入:指向结构RCC_ClocksTypeDef的指针,包含了各个时钟的频率(单位为Hz)
voidRCC_AHBPeriphClockCmd(uint32_t RCC_AHBPeriph, FunctionalState NewState);// 使能或者失能AHB外设时钟
//输入:RCC_AHBPeriph_DMA,DMA时钟->ENABLE或者DISABLE;
//RCC_AHBPeriph_SRAM,SRAM时钟;RCC_AHBPeriph_FLITF,FLITF时钟
//RCC_AHBPeriph_DMA1,DMA1时钟;RCC_AHBPeriph_DMA2,DMA2时钟
//RCC_AHBPeriph_CRC,CRC时钟;RCC_AHBPeriph_FSMC,FSMC时钟
//RCC_AHBPeriph_SDIO,SDIO时钟
voidRCC_APB2PeriphClockCmd(uint32_t RCC_APB2Periph, FunctionalState NewState);// 使能或者失能APB2外设时钟
//输入:RCC_APB2Periph_AFIO,功能复用IO时钟->ENABLE或者DISABLE;
//RCC_APB2Periph_GPIOA,GPIOA时钟;RCC_APB2Periph_GPIOB,GPIOB时钟;
//RCC_APB2Periph_GPIOC,GPIOC时钟;RCC_APB2Periph_GPIOD,GPIOD时钟;
//RCC_APB2Periph_GPIOE,GPIOE时钟;RCC_APB2Periph_ADC1,ADC1时钟;
//RCC_APB2Periph_ADC2,ADC2时钟;RCC_APB2Periph_TIM1,TIM1时钟;
//RCC_APB2Periph_SPI1,SPI1时钟;RCC_APB2Periph_USART1,USART1时钟;
//RCC_APB2Periph_ALL,全部APB2外设时钟
voidRCC_APB1PeriphClockCmd(uint32_t RCC_APB1Periph, FunctionalState NewState);// 使能或者失能APB1外设时钟
//输入:RCC_APB1Periph_TIM2,TIM2时钟->ENABLE或者DISABLE;
//RCC_APB1Periph_TIM3,TIM3时钟;RCC_APB1Periph_TIM4,TIM4时钟
//RCC_APB1Periph_WWDG,WWDG时钟;RCC_APB1Periph_SPI2,SPI2时钟
//RCC_APB1Periph_USART2,USART2时钟;RCC_APB1Periph_USART3,USART3时钟
//RCC_APB1Periph_I2C1,I2C1时钟;RCC_APB1Periph_I2C2,I2C2时钟
//RCC_APB1Periph_USB,USB时钟;RCC_APB1Periph_CAN,CAN时钟
//RCC_APB1Periph_BKP,BKP时钟;RCC_APB1Periph_PWR,PWR时钟
//RCC_APB1Periph_ALL,全部APB1外设时钟
#ifdef STM32F10X_CL
voidRCC_AHBPeriphResetCmd(uint32_t RCC_AHBPeriph, FunctionalState NewState);//
#endif
voidRCC_APB2PeriphResetCmd(uint32_t RCC_APB2Periph, FunctionalState NewState);// 强制或者释放高速APB(APB2)外设复位
//输入:同voidRCC_APB2PeriphClockCmd(uint32_t RCC_APB2Periph, FunctionalState NewState);函数的值
voidRCC_APB1PeriphResetCmd(uint32_t RCC_APB1Periph, FunctionalState NewState);// 强制或者释放低速APB(APB1)外设复位
//输入:同void RCC_APB1PeriphClockCmd(uint32_tRCC_APB1Periph, FunctionalState NewState);函数的值
//例:
//RCC_APB2PeriphResetCmd(RCC_APB2Periph_SPI1,ENABLE);
//RCC_APB2PeriphResetCmd(RCC_APB2Periph_SPI1,DISABLE);
voidRCC_BackupResetCmd(FunctionalState NewState);// 强制或者释放后备域复位
voidRCC_ClockSecuritySystemCmd(FunctionalState NewState);//使能或者失能时钟安全系统
//输入:ENABLE或者DISABLE
voidRCC_MCOConfig(uint8_t RCC_MCO);// 选择在MCO管脚上输出的时钟源
//输入:RCC_MCO_NoClock 无时钟被选中 ;RCC_MCO_SYSCLK 选中系统时钟;
//RCC_MCO_HSI选中HSI ;RCC_MCO_HSE 选中HSE ;
//RCC_MCO_PLLCLK_Div2选中PLL时钟除以2
//警告:当选中系统时钟作为MCO管脚的输出时,注意它的时钟频率不超过50MHz(最大I/O速率)。
FlagStatusRCC_GetFlagStatus(uint8_t RCC_FLAG);// 检查指定的RCC标志位设置与否
//输入:待检查的RCC标志位
//RCC_FLAG_HSIRDY ,HSI晶振就绪;RCC_FLAG_HSERDY,HSE晶振就绪;
//RCC_FLAG_PLLRDY ,PLL就绪;RCC_FLAG_LSERDY ,LSI晶振就绪;
//RCC_FLAG_LSIRDY ,LSE晶振就绪;RCC_FLAG_PINRST,管脚复位 ;
//RCC_FLAG_PORRST ,POR/PDR复位;RCC_FLAG_SFTRST ,软件复位 ;
//RCC_FLAG_IWDGRST ,IWDG复位;RCC_FLAG_WWDGRST ,WWDG复位;
//RCC_FLAG_LPWRRST,低功耗复位
//返回值:RCC_FLAG的新状态(SET或者RESET)
//例:
//FlagStatus Status;
//Status = RCC_GetFlagStatus(RCC_FLAG_PLLRDY);
//if(Status == RESET)
//{
//...
//}
//else
voidRCC_ClearFlag(void);// 清除RCC的复位标志位
//(可以清除的复位标志位有:RCC_FLAG_PINRST,RCC_FLAG_PORRST, //RCC_FLAG_SFTRST, RCC_FLAG_IWDGRST, RCC_FLAG_WWDGRST,RCC_FLAG_LPWRRST)
ITStatusRCC_GetITStatus(uint8_t RCC_IT);// 检查指定的RCC中断发生与否
//输入:RCC_IT_LSIRDY,LSI晶振就绪中断;RCC_IT_LSERDY,LSE晶振就绪中断
//RCC_IT_HSIRDY,HSI晶振就绪中断;RCC_IT_HSERDY,HSE晶振就绪中断
//RCC_IT_PLLRDY,PLL就绪中断;RCC_IT_CSS,时钟安全系统中断
//返回值:RCC_IT的新状态
//例:
//ITStatus Status;
//Status =RCC_GetITStatus(RCC_IT_PLLRDY);
//if(Status == RESET)
//{
//...
//}
//else
//{
//...
//}
voidRCC_ClearITPendingBit(uint8_t RCC_IT);// 清除RCC的中断待处理位
//RCC_IT_LSIRDY,LSI晶振就绪中断;RCC_IT_LSERDY,LSE晶振就绪中断
//RCC_IT_HSIRDY,HSI晶振就绪中断;RCC_IT_HSERDY,HSE晶振就绪中断
//RCC_IT_PLLRDY,PLL就绪中断;RCC_IT_CSS,时钟安全系统中断
五、实例详解
#if defined (STM32F10X_LD_VL)|| (defined STM32F10X_MD_VL)|| (defined STM32F10X_HD_VL)//如果定义了这些系统时钟将设为24M,如果没有定义则为72M
#define SYSCLK_FREQ_24MHz
24000000
#else
#define SYSCLK_FREQ_72MHz 72000000
//系统时钟默认值的定义 ,如果没有定义外部高速时钟则用内部高速时钟,为8000000
#endif
#if defined (STM32F10X_HD) || (defined STM32F10X_XL) || (definedSTM32F10X_HD_VL)//内外部SRAM选择
#endif
#define VECT_TAB_OFFSET
0x0
#ifdef SYSCLK_FREQ_HSE
uint32_t SystemCoreClock
= SYSCLK_FREQ_HSE;
#elif defined SYSCLK_FREQ_24MHz
uint32_t SystemCoreClock
= SYSCLK_FREQ_24MHz;
#elif defined SYSCLK_FREQ_36MHz
uint32_t SystemCoreClock
= SYSCLK_FREQ_36MHz;
#elif defined SYSCLK_FREQ_48MHz
uint32_t SystemCoreClock
= SYSCLK_FREQ_48MHz;
#elif defined SYSCLK_FREQ_56MHz
uint32_t SystemCoreClock
= SYSCLK_FREQ_56MHz;
#elif defined SYSCLK_FREQ_72MHz
uint32_t SystemCoreClock
#define SYSCLK_FREQ_24MHz
#else
#define SYSCLK_FREQ_72MHz 72000000
#endif
#if defined (STM32F10X_HD) || (defined STM32F10X_XL) || (definedSTM32F10X_HD_VL)//内外部SRAM选择
#endif
#define VECT_TAB_OFFSET
#ifdef SYSCLK_FREQ_HSE
#elif defined SYSCLK_FREQ_24MHz
#elif defined SYSCLK_FREQ_36MHz
#elif defined SYSCLK_FREQ_48MHz
#elif defined SYSCLK_FREQ_56MHz
#elif defined SYSCLK_FREQ_72MHz