lpc1768中断问题

发表于 2015-11-17 15:47

第0第1  p2.10，p2.11外部中断是编码器，第三是gpio中断p2.9按键用中断三通道  问题是  中断三使能可进入中断三  旋转编码器此时无法进入中断01 程序跳入中断三并无法出中断三关闭中断三  中断01可用，想到优先级问题，NVIC_SetPriority(EINT3_IRQn,5); 已近降级中断三优先级了，可还是无法进入中断01

#define EINT0             0x00000001
#define EINT1             0x00000002
#define EINT3             0x00000008

void EINT0_IRQHandler(void);
void interruptInit( void );
volatile uint32_t plus=1;
void interruptInit(void)
{
LPC_PINCON->PINSEL4 &= ~0x00f00000;
LPC_PINCON->PINSEL4 |=  0x00500000;

发表于 2015-11-17 15:50

{
LPC_PINCON->PINSEL4 &= ~0x00f00000;
LPC_PINCON->PINSEL4 |=  0x00500000;

LPC_SC->EXTMODE  |= 0x00000003;
LPC_SC->EXTPOLAR |= 0x00000001;

LPC_GPIOINT->IO2IntEnF |= 1<<10;
LPC_GPIOINT->IO2IntEnR |= 1<<11;

LPC_PINCON->PINSEL4 &= ~(0X03L<<18);
LPC_PINCON->PINMODE4 &= ~(0X03L<<18);
LPC_PINCON->PINMODE_OD2 &= ~(0X01<<9);
LPC_GPIOINT->IO2IntEnF |= 1<<9;

NVIC_SetPriority(EINT0_IRQn,0);
NVIC_SetPriority(EINT1_IRQn,0);
NVIC_SetPriority(EINT3_IRQn,5);

NVIC_EnableIRQ(EINT0_IRQn);
NVIC_EnableIRQ(EINT1_IRQn);
NVIC_EnableIRQ(EINT3_IRQn);
}

void EINT0_IRQHandler (void)
{
NVIC_DisableIRQ(EINT0_IRQn);
//NVIC_DisableIRQ(EINT3_IRQn);
  LPC_SC -> EXTINT = EINT0; //clear interrupt
if((LPC_GPIO2->FIOPIN & 1<<11)==0)
{
Delay(10);

++plus;
UART1_SendString("+++");

}
else //if((LPC_GPIO2->FIOPIN & 1<<11)!=0)
{
if(plus>0)
{
--plus;
UART1_SendString("---");
}
}
NVIC_EnableIRQ(EINT0_IRQn);
//NVIC_EnableIRQ(EINT3_IRQn);

}

void EINT1_IRQHandler (void)
{
NVIC_DisableIRQ(EINT1_IRQn);
//NVIC_DisableIRQ(EINT3_IRQn);
LPC_SC -> EXTINT = EINT1; //clear interrupt
if((LPC_GPIO2->FIOPIN & 1<<10)!=0)
{
Delay(10);

if(plus>0)
{
--plus;
UART1_SendString("---");
}
}
else //if((LPC_GPIO2->FIOPIN & 1<<10)==0)
{
++plus;
UART1_SendString("+++");
}
NVIC_EnableIRQ(EINT1_IRQn);
//NVIC_EnableIRQ(EINT3_IRQn);

}

void EINT3_IRQHandler(void)
//void eint3(void)
{
LPC_SC -> EXTINT = EINT0; //clear interrupt
LPC_SC -> EXTINT = EINT1; //clear interrupt
LPC_SC -> EXTINT = EINT3; //clear interrupt
   NVIC_DisableIRQ(EINT3_IRQn);
//NVIC_ClearPendingIRQ(EINT3_IRQn);

   if(LPC_GPIOINT->IntStatus &(1<<2))//Èç¹ûp2.x¶Ë¿ÚÓÐÖÐ¶Ï
{
if(LPC_GPIOINT->IO2IntStatF &(1<<9))//p2.9ÓÐÖÐ¶Ï
{
   LPC_GPIOINT->IO2IntClr |= (1<<9);//ÖÐ¶ÏÇåÁã
   if((LPC_GPIO2->FIOPIN1 & 1<<1)==0)
{
++plus;
UART1_SendString("///");
}
}
}
NVIC_EnableIRQ(EINT3_IRQn);
}

发表于 2015-11-17 15:59

已解决发出来时脑袋一抽就想到了
这俩
LPC_GPIOINT->IO2IntEnF |= 1<<10;
LPC_GPIOINT->IO2IntEnR |= 1<<11;
是配置gpio中断的

[LPC] lpc1768中断问题

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