STOP模式下STM32F103C8的PA8不能唤醒
本帖最后由 Veiko 于 2015-1-14 14:29 编辑在进入STOP模式前我对外部引脚作了配置，代码如下：
void UserEnterLowPowerMode(void)
{
EXTI_InitTypeDef EXTI_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB
| RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOD
| RCC_APB2Periph_AFIO, ENABLE);
/* PA*/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All - GPIO_Pin_0 - GPIO_Pin_8;/* 去掉GPIOA - PA0 */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* PB*/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOB, &GPIO_InitStructure);
/* PC*/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOC, &GPIO_InitStructure);
/* PD*/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOD, &GPIO_InitStructure);
EXTI_ClearITPendingBit(EXTI_Line0 | EXTI_Line1 | EXTI_Line2 | EXTI_Line3 \
| EXTI_Line4 | EXTI_Line5 | EXTI_Line6 | EXTI_Line7 \
| EXTI_Line8 | EXTI_Line9 | EXTI_Line10 | EXTI_Line11 \
| EXTI_Line12 | EXTI_Line13 | EXTI_Line14 | EXTI_Line15 \
| EXTI_Line16 | EXTI_Line17 | EXTI_Line18 | EXTI_Line19);/* 配置中断--清空标志位 */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);/* Enable GPIOA clock */
/* Configure PA.00 pin as input floating */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_8;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_PinSource0);/* Connect EXTI0 Line to PA.00 pin */
GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_PinSource8);/* Connect EXTI8 Line to PA.08 pin */
/* Configure EXTI0 line */
EXTI_InitStructure.EXTI_Line = EXTI_Line0;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
/* Enable and set EXTI9-5 Interrupt to the lowest priority */
NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
/* Configure EXTI8 line */
EXTI_InitStructure.EXTI_Line = EXTI_Line8;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
/* Enable and set EXTI8 Interrupt to the lowest priority */
NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn ;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
EXTI_ClearITPendingBit(EXTI_Line0 | EXTI_Line1 | EXTI_Line2 | EXTI_Line3 \
| EXTI_Line4 | EXTI_Line5 | EXTI_Line6 | EXTI_Line7 \
| EXTI_Line8 | EXTI_Line9 | EXTI_Line10 | EXTI_Line11 \
| EXTI_Line12 | EXTI_Line13 | EXTI_Line14 | EXTI_Line15 \
| EXTI_Line16 | EXTI_Line17 | EXTI_Line18 | EXTI_Line19);/* 配置中断--清空标志位 */
//RCC_AHBPeriphClockCmd(RCC_AHBPeriph_SRAM|RCC_AHBPeriph_FLITF, DISABLE);
PWR_EnterSTOPMode(PWR_Regulator_LowPower,PWR_STOPEntry_WFI);/* 进入停止模式 */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE);/* 使能AFIO时钟 */
GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable, ENABLE);/* 使用SWD，禁用JTAG,JTAG多余端口作IO使用 */
SystemInit();
UserHardWareInitize();
Set_System();
Set_USBClock();
USB_Interrupts_Config();
USB_Init();
USB_PullUpResON();
SEI();
}中断中除了清标志外没有做任何操作的，以下是代码：/**
* @briefThis function handles External line 0 interrupt request.
* @paramNone
* @retval None
*/
void EXTI0_IRQHandler(void)
{
if(EXTI_GetITStatus(EXTI_Line0) != RESET)
{
/* Clear theEXTI line 0 pending bit */
EXTI_ClearITPendingBit(EXTI_Line0);
}
}
/**
* @briefThis function handles External line 0 interrupt request.
* @paramNone
* @retval None
*/
void EXTI9_5_IRQHandler(void)
{
if(EXTI_GetITStatus(EXTI_Line5) != RESET)
{
/* Clear theEXTI line 5 pending bit */
EXTI_ClearITPendingBit(EXTI_Line5);
}
else if(EXTI_GetITStatus(EXTI_Line6) != RESET)
{
/* Clear theEXTI line 6 pending bit */
EXTI_ClearITPendingBit(EXTI_Line6);
}
else if(EXTI_GetITStatus(EXTI_Line7) != RESET)
{
/* Clear theEXTI line 7 pending bit */
EXTI_ClearITPendingBit(EXTI_Line7);
}
else if(EXTI_GetITStatus(EXTI_Line8) != RESET)
{
/* Clear theEXTI line 8 pending bit */
EXTI_ClearITPendingBit(EXTI_Line8);
}
else if(EXTI_GetITStatus(EXTI_Line9) != RESET)
{
/* Clear theEXTI line 9 pending bit */
EXTI_ClearITPendingBit(EXTI_Line9);
}
}
但PA0引脚的上升沿可以唤醒，PA8引脚的上升沿却不能唤醒，请大神帮忙解惑，不胜感激!
已解决，答案见16楼
看看数据手册吧~PA0可以唤醒
PA8没有
是不是PA8没有唤醒功能？ hlt512 发表于 2015-1-14 09:15
是不是PA8没有唤醒功能？
根据芯片手册，在STOP模式下所有的EXTI引脚配置后都可以唤醒啊 hlt512 发表于 2015-1-14 09:15
是不是PA8没有唤醒功能？
现在就是不知道哪里配置错了，或者还有什么需要配置但却忘了配置的参数 WSCKY 发表于 2015-1-14 09:20
看看数据手册吧~PA0可以唤醒
PA8没有
额，这只是引脚名称，能不能唤醒不能只看这个，要看对应低功耗模式的唤醒条件才行啊，但条件里说可以唤醒的 WSCKY 发表于 2015-1-14 09:20
看看数据手册吧~PA0可以唤醒
PA8没有
我是参照这个图然后再看详细说明来做的，但可能哪里还没配好
外设的复用功能指定只有PA0，当然PA8就没有用了，有些外设可以调整复用引脚，也只能在指定的范围内 把中断代码贴出来吧！ 晓枫VS枯叶 发表于 2015-1-14 09:49
把中断代码贴出来吧！
中断中只清了标志位，代码已贴出来了，在1楼更新的，麻烦看一下