各位朋友晚上好 我是一名接触STM32 不久的新手，对32的配置不是很在行 由于项目需要用32的片子做低功耗 这是我的配置 不知道什地方有问题 进入待机模式后用外部中断 usart都无法唤醒 请高手指点 拜托了
#include "stm32f10x_lib.h"
//#include
//#include
extern u8 SCII[5];
extern u8 ret;
extern u8 k,dat;
u8 xi=0;
ErrorStatus HSEStartUpStatus;
void RCC_Configuration(void);
void NVIC_Configuration(void);
void EXTI_Configuration(void);
void GPIO_Configuration(void);
void USART_Configuration(void);
void Sys_Standby(void);
void SYSCLKConfig_STOP(void);
void delay(u8 time);
int main (void)
{
u8 i;
#ifdef DEBUG
debug();
#endif
RCC_Configuration();
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR,ENABLE); // RCC_APB1Periph_BKP
NVIC_Configuration();
EXTI_Configuration();
USART_Configuration();
GPIO_Configuration();
while(1)
{
// delay(50);
if(GPIO_ReadInputDataBit(GPIOA, GPIO_Pin_7)==0)
{
/* Turn off led connected to PC.06 */
k=1;
GPIO_SetBits(GPIOD, GPIO_Pin_10);
/* Request to enter STOP mode with regulator ON */
PWR_WakeUpPinCmd(ENABLE);
/*ENABLE all GPIO_EXTI*/
PWR_EnterSTANDBYMode(); // PWR_Regulator_LowPower
// PWR_EnterSTOPMode(PWR_Regulator_ON, PWR_STOPEntry_WFE); //停止 中断后程序重这运行下去
/* At this stage the system has resumed from STOP mode -------------------*/
//GPIO_SetBits(GPIOD, GPIO_Pin_11);
/* Turn on led connected to PC.06 */
// GPIO_SetBits(GPIOD, GPIO_Pin_9);
/* Configures system clock after wake-up from STOP: enable HSE, PLL and select PLL
as system clock source (HSE and PLL are disabled in STOP mode) */
SYSCLKConfig_STOP(); //需要重新配置时钟
/* Turn off led connected to PC.09 */
GPIO_ResetBits(GPIOD, GPIO_Pin_10);
}
delay(50);
if(xi==1)
{
for(i=1;i<6;i++)
{
USART_SendData(USART1, SCII);
while (!(USART1->SR & USART_FLAG_TXE));
USART_ClearITPendingBit(USART1,USART_IT_TXE);
// delay(50);
}
xi=0;
}
}
}
void RCC_Configuration(void)
{
ErrorStatus HSEStartUpStatus;
/**************************/
RCC_DeInit();
/* Enable HSE */
RCC_HSEConfig(RCC_HSE_ON);
/* Wait till HSE is ready */
HSEStartUpStatus = RCC_WaitForHSEStartUp();
if(HSEStartUpStatus == SUCCESS)
{
/* HCLK = SYSCLK */
RCC_HCLKConfig(RCC_SYSCLK_Div1);
/* PCLK2 = HCLK */
RCC_PCLK2Config(RCC_HCLK_Div1);
/* PCLK1 = HCLK/2 */
RCC_PCLK1Config(RCC_HCLK_Div2);
/* Flash 2 wait state */
FLASH_SetLatency(FLASH_Latency_2);
/* Enable Prefetch Buffer */
FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);
/* PLLCLK = 8MHz * 9 = 72 MHz */
RCC_PLLConfig(RCC_PLLSource_HSE_Div1, RCC_PLLMul_9);
/* Enable PLL */
RCC_PLLCmd(ENABLE);
/* Wait till PLL is ready */
while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
{
}
/* Select PLL as system clock source */
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
/* Wait till PLL is used as system clock
source */
while(RCC_GetSYSCLKSource() != 0x08)
{
}
}
/* Enable USART1 and GPIOA clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA|
RCC_APB2Periph_GPIOB|RCC_APB2Periph_GPIOD| RCC_APB2Periph_AFIO,ENABLE);
}
void NVIC_Configuration(void)
{
NVIC_InitTypeDef NVIC_InitStructure;
#ifdef VECT_TAB_RAM
/* Set the Vector Table base location at 0x20000000 */
NVIC_SetVectorTable(NVIC_VectTab_RAM, 0x0);
//指定向量表位置在RAM存储器
//向量表位于RAM 参阅Section：NVIC_VectTab查阅更多该参数允许取值范围
#else /* VECT_TAB_FLASH */
/* Set the Vector Table base location at 0x08000000 */
NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
//指定向量表位置在flash程序存储器
#endif
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQChannel;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
NVIC_InitStructure.NVIC_IRQChannel = EXTI15_10_IRQChannel;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQChannel; //UART4全局中断 通道
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority =0;//
NVIC_InitStructure.NVIC_IRQChannelSubPriority =4; //
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
void EXTI_Configuration(void)
{
EXTI_InitTypeDef EXTI_InitStructure;
/* Connect EXTI Line9 to PB.09 */
GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_PinSource10);
GPIO_EXTILineConfig(GPIO_PortSourceGPIOB, GPIO_PinSource9);
EXTI_InitStructure.EXTI_Line = EXTI_Line9;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; //外中断 EXTI_Mode_Event 事件中断
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
EXTI_GenerateSWInterrupt(EXTI_Line9);
EXTI_InitStructure.EXTI_Line = EXTI_Line10;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; //外中断 EXTI_Mode_Event 事件中断
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
EXTI_GenerateSWInterrupt(EXTI_Line10);
}
/*void Sys_Standby(void)
{
SCB->SCR|=1<<2;// SLEEPDEEP (SYS->CTRL)
RCC->APB1ENR|=1<<28; //
PWR->CSR|=1<<8; // WKUP
PWR->CR|=1<<2; // Wake-up
PWR->CR|=1<<1; //PDDS
__WFE(); // WFI
} */
void USART_Configuration(void)
{
USART_InitTypeDef USART_InitStructure;
/************************************************/
USART_InitStructure.USART_BaudRate = 9600;
//该成员设置了USART传输的波特率
//波特率可以由以下公式计算
//IntegerDivider = ((APBClock) / (16 * (USART_InitStruct->USART_BaudRate)))
//FractionalDivider = ((IntegerDivider - ((u32) IntegerDivider)) * 16) + 0.5
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
//设置传输数据位数 提示了在一个帧中传输或者接收到的数据位数
USART_InitStructure.USART_StopBits = USART_StopBits_1;
//发送的停止位数目
USART_InitStructure.USART_Parity = USART_Parity_No ;
//定义了奇偶校验
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
//指定了硬件流控制模式使能还是失能
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
//指定了使能或者失能发送和接收模式
/* Configure USART1 basic and asynchronous paramters */
USART_Init(USART1, &USART_InitStructure);
/* Enable USART1 */
USART_ITConfig(USART1,USART_IT_RXNE, ENABLE);
USART_Cmd(USART1, ENABLE); //使能或者失能USART外设
}
void SYSCLKConfig_STOP(void)
{
/* Enable HSE */
RCC_HSEConfig(RCC_HSE_ON);
/* Wait till HSE is ready */
HSEStartUpStatus = RCC_WaitForHSEStartUp();
if(HSEStartUpStatus == SUCCESS)
{
/* Enable PLL */
RCC_PLLCmd(ENABLE);
/* Wait till PLL is ready */
while(RCC_GetFlagStatus(RCC_FLAG_PLLRDY) == RESET)
{
}
/* Select PLL as system clock source */
RCC_SYSCLKConfig(RCC_SYSCLKSource_PLLCLK);
/* Wait till PLL is used as system clock source */
while(RCC_GetSYSCLKSource() != 0x08)
{
}
}
}
void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* Configure USART1 Tx (PA.09) as alternate function push-pull */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/*Configure USART1 Rx (PA.10) as input floating; */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9; //EXTI
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11; //LED
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOD, &GPIO_InitStructure);
}
void delay(u8 time)
{
u16 a,b;
for(a=time;a>0;a--)
for(b=200;b>0;b--);
}
#ifdef DEBUG
void assert_failed(u8* file, u32 line)
{
//如果传给宏assert_param的参数为false，
//则调用函数assert_failed并返回被错误调用的函数所在的文件名
//和行数。如果传给宏assert_param的参数为true，则无返回值
/* Infinite loop */
while (1)
{
}
}
#endif
你好，你使用的是STANDBY模式，那么请看下图：
如果使用这种模式那么唤醒只能是：RTC WAKEUP引脚，看门狗，NRST的外部复位引脚
你详细比较一下你想使用的模式
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