stm32f207 中断程序求助
小弟新手，写了个中断的程序，本意是软件触发一个EXTI_Line0中断，然后在处理EXTI_Line0中断时产生更高级的EXTI_Line1中断嵌套。但是现在无论如何，EXTI_GenerateSWInterrupt(EXTI_Line0)产生的中断无法顺利跳转到void EXTI0_IRQHandler(void)。
请各路高手不吝指教，电路图和程序我已经上传到附件。
/******************************************************************************/
#include "stm32f2xx.h"
#include "stm32f2xx_exti.h"
#include "misc.h"
#include "stm32f2xx_syscfg.h"
#include "stm32f2xx_it.h"
typedef unsigned char u8;
/*定义PA.0 PC.1 PC.2分别为按键WAKE UP 摇杆JOYC JOYB*/
#define WAKEUP_KEY_Port GPIOA
#define WAKEUP_KEY_Pin GPIO_Pin_0
#define WAKEUP_KEY_RCC_AHBPeriph RCC_AHB1Periph_GPIOA
#define JOY_B_KEY_Port GPIOC
#define JOY_B_KEY_Pin GPIO_Pin_2
#define JOY_B_KEY_RCC_AHBPeriph RCC_AHB1Periph_GPIOC
#define JOY_C_KEY_Port GPIOC
#define JOY_C_KEY_Pin GPIO_Pin_1
#define JOY_C_KEY_RCC_AHBPeriph RCC_AHB1Periph_GPIOC
/******************************************************************************/
/*定义四个LED灯*/
#define LED1_Port GPIOF
#define LED1_Pin GPIO_Pin_6
#define LED1_RCC_AHBPeriph RCC_AHB1Periph_GPIOF
#define LED2_Port GPIOF
#define LED2_Pin GPIO_Pin_7
#define LED2_RCC_AHBPeriph RCC_AHB1Periph_GPIOF
#define LED3_Port GPIOF
#define LED3_Pin GPIO_Pin_8
#define LED3_RCC_AHBPeriph RCC_AHB1Periph_GPIOF
#define LED4_Port GPIOF
#define LED4_Pin GPIO_Pin_9
#define LED4_RCC_AHBPeriph RCC_AHB1Periph_GPIOF
/******************************************************************************/
void RCC_Configuration(void);
void GPIO_Configuration(void);
void NVIC_Configuration(void);
void EXTI_Configuration(void);
void Delay(__IO uint32_t nCount);
void Led_Toggle(uint8_t keyvulua);
uint8_t Read_JOYState(void);
/******************************************************************************/
/*主函数*/
int main(void)
{
RCC_Configuration();
NVIC_Configuration();
GPIO_Configuration();
EXTI_Configuration();
EXTI_GenerateSWInterrupt(EXTI_Line0);
while (1)
{
Led_Toggle(Read_JOYState()) ;
}
}
/******************************************************************************/
/*打开LED 按键 SYSCFG时钟*/
void RCC_Configuration(void)
{
RCC_AHB1PeriphClockCmd(LED1_RCC_AHBPeriph | LED2_RCC_AHBPeriph | LED3_RCC_AHBPeriph |
LED4_RCC_AHBPeriph, ENABLE);
RCC_AHB1PeriphClockCmd(WAKEUP_KEY_RCC_AHBPeriph | JOY_B_KEY_RCC_AHBPeriph |
JOY_C_KEY_RCC_AHBPeriph, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
}
/******************************************************************************/
void GPIO_Configuration(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* Configure PF6 PF7 PF8 PF9 in output pushpull mode */
GPIO_InitStructure.GPIO_Pin = LED1_Pin;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(LED1_Port, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = LED2_Pin;
GPIO_Init(LED2_Port, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = LED3_Pin;
GPIO_Init(LED3_Port, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = LED4_Pin;
GPIO_Init(LED4_Port, &GPIO_InitStructure);
/******************************************************************************/
/* Key GPIO Config */
GPIO_InitStructure.GPIO_Pin = WAKEUP_KEY_Pin;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(WAKEUP_KEY_Port, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = JOY_B_KEY_Pin;
GPIO_Init(JOY_B_KEY_Port, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = JOY_C_KEY_Pin;
GPIO_Init(JOY_C_KEY_Port, &GPIO_InitStructure);
/******************************************************************************/
/*配置外部中断输入通道*/
SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOA,EXTI_PinSource0);
SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOC,EXTI_PinSource1);
SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOC,EXTI_PinSource2);
}
/******************************************************************************/
uint8_t Read_JOYState(void)
{
if(!GPIO_ReadInputDataBit(WAKEUP_KEY_Port,WAKEUP_KEY_Pin))
return 0;
else if(!GPIO_ReadInputDataBit(JOY_B_KEY_Port,JOY_B_KEY_Pin))
return 1;
else if(!GPIO_ReadInputDataBit(JOY_C_KEY_Port,JOY_C_KEY_Pin))
return 2;
return 3;
}
void Led_Toggle(uint8_t keyvulua)
{
switch(keyvulua)
{
case 0:
GPIO_SetBits(LED1_Port , LED1_Pin);
GPIO_SetBits(LED2_Port , LED2_Pin);
Delay(0xffffff);
break;
case 1:
GPIO_SetBits(LED3_Port , LED3_Pin);
GPIO_SetBits(LED4_Port , LED4_Pin);
Delay(0xffffff);
break;
case 2:
GPIO_ResetBits(LED1_Port , LED1_Pin);
GPIO_ResetBits(LED2_Port , LED2_Pin);
GPIO_ResetBits(LED3_Port , LED3_Pin);
GPIO_ResetBits(LED4_Port , LED4_Pin);
Delay(0xffffff);
break;
case 3:
break;
}
}
/******************************************************************************/
static void Delay(__IO uint32_t nCount)
{
while(nCount--)
{
}
}
/******************************************************************************/
void NVIC_Configuration(void)
{
NVIC_InitTypeDef NVIC_InitStructure;
/*根据预编译条件决定中断向量表起始地址*/
#ifdef NVIC_VectTab_RAM
NVIC_SetVectorTable(NVIC_VectTab_RAM,0x0);
#else
NVIC_SetVectorTable(NVIC_VectTab_FLASH,0x0);
#endif
/******************************************************************************/
/*选择NVIC优先级分组2，使能EXTI0 EXTI1 EXTI2通道*/
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
NVIC_InitStructure.NVIC_IRQChannel=EXTI0_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=2;
NVIC_InitStructure.NVIC_IRQChannelSubPriority=0;
NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
NVIC_Init(&NVIC_InitStructure);
NVIC_InitStructure.NVIC_IRQChannel=EXTI1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority=0;
NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
NVIC_Init(&NVIC_InitStructure);
NVIC_InitStructure.NVIC_IRQChannel=EXTI2_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority=0;
NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
/******************************************************************************/
void EXTI_Configuration(void)
{
EXTI_InitTypeDef EXTI_InitStructure;
EXTI_InitStructure.EXTI_Line=EXTI_Line0|EXTI_Line1|EXTI_Line2;
EXTI_InitStructure.EXTI_Mode=EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger=EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_LineCmd=ENABLE;
EXTI_Init(&EXTI_InitStructure);
}
/******************************************************************************/
void EXTI0_IRQHandler(void)
{
if(EXTI_GetITStatus(EXTI_Line0) != RESET)
{
Led_Toggle(0);
EXTI_GenerateSWInterrupt(EXTI_Line1);
Led_Toggle(1);
EXTI_ClearFlag(EXTI_Line0);
}
}
void EXTI1_IRQHandler(void)
{
Led_Toggle(1);
EXTI_GenerateSWInterrupt(EXTI_Line2);
Led_Toggle(0);
EXTI_ClearFlag(EXTI_Line1);
}
void EXTI2_IRQHandler(void)
{
Led_Toggle(2);
EXTI_ClearFlag(EXTI_Line2);
}
/******************************************************************************/
#ifdefUSE_FULL_ASSERT
/**
* @briefReports the name of the source file and the source line number
* where the assert_param error has occurred.
* @paramfile: pointer to the source file name
* @paramline: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t* file, uint32_t line)
{
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* Infinite loop */
while (1)
{
}
}
#endif
/*****************************END OF FILE****************************************/
程序大概是想用软件触发一个EXTI_Line0 晕，帖子沉了啊。。。
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