F28M35x the name of interrupt PORTD

Hi Hongyue,

You might be missing something; can you paste your implementation?

Regards,

Gautam

Hi Gautam,

It seem to have gone into an infinite loop when I change the level of GPIO20.The following is my code:

#include "inc/hw_ints.h"
#include "inc/hw_memmap.h"
#include "inc/hw_nvic.h"
#include "inc/hw_gpio.h"
#include "inc/hw_types.h"
#include "inc/hw_sysctl.h"
#include "driverlib/debug.h"
#include "driverlib/interrupt.h"
#include "driverlib/sysctl.h"
#include "driverlib/gpio.h"

//中断函数声明
void GPIODIntHandler(void)
{
 volatile unsigned long ulLoop,ulIntStatus,toggle1=0;
      ulIntStatus = GPIOPinIntStatus(GPIO_PORTD_BASE,true);
       GPIOPinIntClear(GPIO_PORTD_BASE,ulIntStatus);
    if(toggle1==0)
    {
     GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_7, 0);
     toggle1=1;
    }
    else
    {
     GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_7, ~0);
     toggle1=0;
    }

}

//*****************************************************************************
// The error routine that is called if the driver library encounters an error.
//*****************************************************************************
#ifdef DEBUG
void
__error__(char *pcFilename, unsigned long ulLine)
{
}

#endif

int
main(void)
{

    volatile unsigned long ulLoop;

    // Disable Protection
    HWREG(SYSCTL_MWRALLOW) =  0xA5A5A5A5;

    // Sets up PLL, M3 running at 100MHz and C28 running at 100MHz
    SysCtlClockConfigSet(SYSCTL_USE_PLL | (SYSCTL_SPLLIMULT_M & 0xA) |
                         SYSCTL_SYSDIV_1 | SYSCTL_M3SSDIV_1 |
                         SYSCTL_XCLKDIV_4);

    // Enable clock supply for GPIOC
    SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOC);
    //使用GPIOD——GPIO20作为中断输入
    SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOD);

    GPIOPinTypeGPIOInput(GPIO_PORTD_BASE, GPIO_PIN_4);
    GPIOIntTypeSet(GPIO_PORTD_BASE, GPIO_PIN_4, GPIO_FALLING_EDGE);
    IntPrioritySet(INT_GPIOD,0x00);
    IntEnable(INT_GPIOD);
    GPIOPinIntEnable(GPIO_PORTD_BASE, GPIO_PIN_4);
    GPIOPortIntRegister(INT_GPIOD,GPIODIntHandler);

    // Disable clock supply for the watchdog modules
    SysCtlPeripheralDisable(SYSCTL_PERIPH_WDOG1);
    SysCtlPeripheralDisable(SYSCTL_PERIPH_WDOG0);
   
    // Enable processor interrupts.
    IntMasterEnable();

    GPIOPinTypeGPIOOutput(GPIO_PORTC_BASE, GPIO_PIN_7);
    GPIOPinTypeGPIOOutput(GPIO_PORTC_BASE, GPIO_PIN_6);
    GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_7, ~0);
    GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_6, ~0);
   
    // Loop forever while the timers run.
    while(1)
    {
        //
        // Turn on the LED.
        //
        GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_6, 0);
        //
        // Delay for a bit.
        //
        for(ulLoop = 0; ulLoop < 2000000; ulLoop++)
        {
        }
        //
        // Turn off the LED.
        //
        GPIOPinWrite(GPIO_PORTC_BASE, GPIO_PIN_6, ~0);
        //
        // Delay for a bit.
        //
        for(ulLoop = 0; ulLoop < 2000000; ulLoop++)
        {
        }

    }
}

Best Regards,

Hongyue

Hi Hongyue!

Try thus:

interrupt void GPIODIntHandler(void)

{..............

}

Also check your code through following references: ti\controlSUITE\device_support\f28m35x\v160\MWare\driverlib\   gpio.c & interrupt.c.

Regards,

Igor

Hi lgor,

Thank you! I have tried "interrupt void GPIODIntHandler(void)",the situation is the same as before.When I change the level of GPIO20,program will go into an infinite loop.And it will stop here,as shown in figure:

Hello!

Perhaps I don't understand you right. Does your code work right when you use the interrupt from GPIO_PIN_4 of other port (A,B or C)? Did you try this? Is LED blinking at this case? Is GPIO_PIN_7 (of port D) switching? 

Regards,

Igor

Hello lgor,

It also doesn't work when I use the interrupt from GPIO_PIN_4 of other PORTJ.And the LED2 will stop blinking when interrupt occurs,LED3 does not blink yet.When I press F8,the program will execute in INTDefaultTHandler of startup_ccs.c.

Best Regards,

Hongyue

Hello!

1 BTW about  volatile unsigned long ulLoop,ulIntStatus,toggle1=0; - this declaration should be outside of your ISR "void GPIODIntHandler(void)" and better outside of main().

2 Did you try example ti\controlSUITE\device_support\f28m35x\v201\F28M35x_examples_Master\blinky\m3\ on your board?

Regards,

Igor

Hello lgor,

I have tried what you said in the above post,but it still doesn't work.Is there any method to verify which function has invoked the "IntDefaultHandler" in CCS,when a interrupt occurs?What has this situation been leaded?  Thank you!

Best Regards,

Hongyue

Hello!

Sorry, I didn't understand something. Did you try example  ti\controlSUITE\device_support\f28m35x\v201\F28M35x_examples_Master\blinky\m3\. It must work.

Regards,

Igor

Hello lgor,

Thank you! I have solved the problem,and I replace the INT_GPIOD with GPIO_PORTD_BASE in the GPIOPortIntRegister().Now the interrupt works well.

Best Regards,

Hongyue

Hello!

Congratulations! This is an elementary problem of incorrect parameter of function "GPIOPortIntRegister(unsigned long ulPort, void (*pfnIntHandler)(void))". Param ulPort is the base address of the GPIO port (gpio.c). But I did not notice...

Good luck,

Igor