stm32 每条中断线只能有一个中断源
今天才发现stm32的外部中断，每条中断线只能有一个中断源啊！！！:'(我的PA4，PA5，PA6，PA7，PC4，PC5，PB0，PB1，PE7这几个引脚只能PA4，PA5，PA6，PA7，PB0，PB1用外部中断了，
大家有什么好的办法，能让其他的几个引脚也用上外部中断吗？ 分时开启的办法就算了，不实用。
#ifndef _COUNTER_H_
#define _COUNTER_H_
#include"driver_about.h"
#define COUNTER1_PORT GPIOE
#define COUNTER1_PIN GPIO_Pin_7
#define COUNTER2_PORT GPIOB
#define COUNTER2_PIN GPIO_Pin_1
#define COUNTERCTRL_PORT GPIOE
#define COUNTERCTRL_PINGPIO_Pin_8
#define COUNTER1_GPIO_PortSourceGPIO_PortSourceGPIOE
#define COUNTER1_GPIO_PinSource GPIO_PinSource7
#define COUNTER2_GPIO_PortSourceGPIO_PortSourceGPIOB
#define COUNTER2_GPIO_PinSource GPIO_PinSource1
#define COUNTER1_EXTI_Line EXTI_Line7
#define COUNTER2_EXTI_Line EXTI_Line1
#define Counter1_IRQn EXTI9_5_IRQn
#define Counter1_IRQHandler EXTI9_5_IRQHandler
#define Counter2_IRQn EXTI1_IRQn
#define Counter2_IRQHandler EXTI1_IRQHandler
#define COUNTERCTRL_Open() GPIO_ResetBits(COUNTERCTRL_PORT,COUNTERCTRL_PIN)
#define COUNTERCTRL_Close() GPIO_SetBits(COUNTERCTRL_PORT,COUNTERCTRL_PIN)
void Counter_Init(void);
void Set_Coin1(u8 coin);
void Set_Coin2(u8 coin);
u8 Get_Coin1(void);
u8 Get_Coin2(void);
u8 Add_Coin1(u8 value);
u8 Add_Coin2(u8 value);
#endif
////////////////////////////////////////////////////////
#include"counter.h"
static u8 Coin1=0;
static u8 Coin2=0;
void Counter_GPIO(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin =COUNTER1_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
GPIO_Init(COUNTER1_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin =COUNTER2_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
GPIO_Init(COUNTER2_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin =COUNTERCTRL_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
GPIO_Init(COUNTERCTRL_PORT, &GPIO_InitStructure);
COUNTERCTRL_Open();
}
void Counter1_EXIT_Init(void)
{
EXTI_InitTypeDef EXTI_InitStructure;//定义外部中断初始化参数的结构体
GPIO_EXTILineConfig(COUNTER1_GPIO_PortSource,COUNTER1_GPIO_PinSource);//选择中断管脚
EXTI_ClearITPendingBit(COUNTER1_EXTI_Line);//清除外部中断挂起标志
EXTI_InitStructure.EXTI_Line = COUNTER1_EXTI_Line; //选择中断线路
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;//设置为中断请求，非事件请求
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;//设置中断触发方式为下降沿触发
EXTI_InitStructure.EXTI_LineCmd = ENABLE; //外部中断使能
EXTI_Init(&EXTI_InitStructure);//初始化外部中断
}
void Counter1_NVIC_EXIT_Init(void)
{
NVIC_InitTypeDef NVIC_InitStructure;//定义NVIC的结构体变量
NVIC_InitStructure.NVIC_IRQChannel = Counter1_IRQn;//选择中断通道
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority =0;//抢占式中断优先级设置
NVIC_InitStructure.NVIC_IRQChannelSubPriority =5;//响应式中断优先级设置
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;//使能中断
NVIC_Init(&NVIC_InitStructure);
}
void Counter2_EXIT_Init(void)
{
EXTI_InitTypeDef EXTI_InitStructure;//定义外部中断初始化参数的结构体
GPIO_EXTILineConfig(COUNTER2_GPIO_PortSource,COUNTER2_GPIO_PinSource);//选择中断管脚
EXTI_ClearITPendingBit(COUNTER2_EXTI_Line);//清除外部中断挂起标志
EXTI_InitStructure.EXTI_Line = COUNTER2_EXTI_Line; //选择中断线路
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;//设置为中断请求，非事件请求
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;//设置中断触发方式为下降沿触发
EXTI_InitStructure.EXTI_LineCmd = ENABLE; //外部中断使能
EXTI_Init(&EXTI_InitStructure);//初始化外部中断
}
void Counter2_NVIC_EXIT_Init(void)
{
NVIC_InitTypeDef NVIC_InitStructure;//定义NVIC的结构体变量
NVIC_InitStructure.NVIC_IRQChannel = Counter2_IRQn;//选择中断通道
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority =0;//抢占式中断优先级设置
NVIC_InitStructure.NVIC_IRQChannelSubPriority =4;//响应式中断优先级设置
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;//使能中断
NVIC_Init(&NVIC_InitStructure);
}
void Counter_Init(void)
{
Counter_GPIO();
Counter1_EXIT_Init();
Counter1_NVIC_EXIT_Init();
Counter2_EXIT_Init();
Counter2_NVIC_EXIT_Init();
}
void Set_Coin1(u8 coin)
{
Coin1=coin;
}
u8 Get_Coin1(void)
{
return Coin1;
}
u8 Add_Coin1(u8 value)
{
Coin1+=value;
return Coin1;
}
void Set_Coin2(u8 coin)
{
Coin2=coin;
}
u8 Get_Coin2(void)
{
return Coin2;
}
u8 Add_Coin2(u8 value)
{
Coin2+=value;
return Coin2;
}
void Counter1_IRQHandler(void)
{
OS_ERR err;
OSIntEnter();
if(EXTI_GetITStatus(COUNTER1_EXTI_Line)!= RESET)
{
OSTaskQPost(&CounterStkTCB,&Coin1,1,OS_OPT_POST_FIFO,&err);
EXTI_ClearITPendingBit(COUNTER1_EXTI_Line);
}
else
{
EXTI9_5_IRQHandler_Input();//输入产生的中断
}
//EXTI_ClearITPendingBit(COUNTER1_EXTI_Line);
OSIntExit();
}
void Counter2_IRQHandler(void)
{
OS_ERR err;
OSIntEnter();
if(EXTI_GetITStatus(COUNTER2_EXTI_Line)!= RESET)//后半部分判断中断来源
{
OSTaskQPost(&CounterStkTCB,&Coin2,2,OS_OPT_POST_FIFO,&err);
EXTI_ClearITPendingBit(COUNTER2_EXTI_Line);
}
//EXTI_ClearITPendingBit(COUNTER2_EXTI_Line);
OSIntExit();
}
页:
[1]