TI中文支持网神一样的技术人员你好：
我写了一个外部中断程序，不知道为什么进不了中断函数，请大师看看。
/**
* \file gpioCardDetect.c
*
* \brief This is a sample application file demonstrating the use of
* a GPIO pin to generate an interrupt whenever an MMC/SD card
* is inserted or ejected from the Evaluation Module(EVM).
*/
/*
* Copyright (C) 2012 Texas Instruments Incorporated – http://www.ti.com/
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the
* distribution.
*
* Neither the name of Texas Instruments Incorporated nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#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：
这个调用的目的是什么？IntEventSet(SYS_INT_GPIO_B2INT); //set the EVTFLAG register of GPIO_Bank2
上面程序是基于哪个例子来的？没看到中断向量表，不好说其它的对不对。
另外，观察寄存IFR有没有置位？
