C6748外部中断

以下是我写的外部中断程序，运行时按按钮无法进入中断服务程序。请给位帮忙看一下，程序有没有问题。

#include "gpio.h"
#include "interrupt.h"
#include "psc.h"
//#include "Sys_Init.h"
#include "soc_C6748.h"
#include "lcdkC6748.h"

volatile unsigned char flag = 0;

/****************************************************************************/
/* LOCAL FUNCTION PROTOTYPES */
/****************************************************************************/
static void Delay(volatile unsigned int delay);
void EVMC6748_pinmuxConfig(unsigned int in_reg, unsigned int in_mask, unsigned int in_val) ;
static void InitDspIntc(void) ;
static void GPIOIsr(void) ;
/****************************************************************************/
/* GLOBAL VARIABLES */
/****************************************************************************/

/****************************************************************************/
/* LOCAL FUNCTION DEFINITIONS */
/****************************************************************************/

int main(void)
{

int i = 0 ;
PSCModuleControl(SOC_PSC_1_REGS, HW_PSC_GPIO, PSC_POWERDOMAIN_ALWAYS_ON,
PSC_MDCTL_NEXT_ENABLE);

EVMC6748_pinmuxConfig(6,0xF000,0x8000);
GPIODirModeSet(SOC_GPIO_0_REGS, 37, GPIO_DIR_INPUT);
GPIODirModeSet(SOC_GPIO_0_REGS, 37, GPIO_INT_TYPE_RISEDGE);

GPIOBankIntEnable(SOC_GPIO_0_REGS, 2);

InitDspIntc() ;
while(1)
{
i ++ ;
Delay(1000000);
}
}
/*

** \brief This function sets up the status of interrupt.

**

*/

static void InitDspIntc(void)

{

IntDSPINTCInit(); //initialize the interrupt controller

IntGlobalEnable(); //enable DSP CPU interrupts globally

IntRegister(C674X_MASK_INT4, GPIOIsr); //register the ISR in the interrupt vector table

IntEventMap(C674X_MASK_INT4, SYS_INT_GPIO_B2INT); //map the system event GPIO_Bank2(BUTTON) to CPU INT4

IntEnable(C674X_MASK_INT4); //enable the CPU masked INT4

IntEventSet(SYS_INT_GPIO_B2INT); //set the EVTFLAG register of GPIO_Bank2

}

/*

** \brief Interrupt Service Routine to be executed on GPIO interrupts.

** This disables the bank interrupts, clears the system interrupt

** status and pin interrupt status. This also sets flag as 1.

*/

static void GPIOIsr(void)

{

/* Disable the interrupts for pins of bank 2 in GPIO.*/

GPIOBankIntDisable(SOC_GPIO_0_REGS, 2);

/* Clear the system interrupt status in the DSPINTC*/

IntEventClear(SYS_INT_GPIO_B2INT);

/* Clears the Interrupt Status of GP2[4] in GPIO.*/

GPIOPinIntClear(SOC_GPIO_0_REGS, 37);

flag = 1;

}

/*
** \brief This function checks the insertion status of the MMC/SD card
** in the device and prints related statements on the serial
** commuincation console of the external device.
**
*/

/*
** \brief This function can be called to generate a delay.
*/

static void Delay(volatile unsigned int delay)
{
while(delay–);
}
void EVMC6748_pinmuxConfig(unsigned int in_reg, unsigned int in_mask, unsigned int in_val)
{
// unlock the system config registers.
SYSCONFIG->KICKR[0] = KICK0R_UNLOCK;
SYSCONFIG->KICKR[1] = KICK1R_UNLOCK;

// make sure the pinmux register is cleared for the mask bits before
// setting the value.
CLRBIT(SYSCONFIG->PINMUX[in_reg], in_mask);
SETBIT(SYSCONFIG->PINMUX[in_reg], in_val);

// lock the system config registers.
SYSCONFIG->KICKR[0] = KICK0R_LOCK;
SYSCONFIG->KICKR[1] = KICK1R_LOCK;
}

/*****************************END OF FILE************************************/

Tony Tang：

参考中断例程：

http://www.deyisupport.com/question_answer/dsp_arm/omap_l1x/f/54/t/12550.aspx

 

dongming li1：

while(1){i ++ ;Delay(1000000);}

会死循环

Tony Tang：

回复 dongming li1:

嵌入式编译不同于PC编程，嵌入式程序都是一个死循环。PC程序退出是交给操作系统，嵌入式程序退出就没有了，飞了。

user3823702：

回复 dongming li1:

当时刚接触不怎么会，后来仔细琢磨了下，搞定了，不过还是谢谢！