RTOS/MSP432P401R: Issue with Hwi interrupt service routine. MSP432P401R TI RTOS version 2.20. E_alreadyDefined: Hwi already defined: intr# 45

suraj H

Part Number: MSP432P401R

Tool/software: TI-RTOS

Hi,

I am waking up an RTC after certain time period from low power mode. To generate the interrupt, I am using a Hardware interrupt as shown below, which is being called from a Task.

But the problem is any interrupt number I use, I keep getting error:

E_alreadyDefined: Hwi already defined: intr#...

Kindly let me know, what is that I am doing wrong. I searched in the forum and tried different suggestions, but nothing worked. Please help.

(Code below)

void RTCFun(void)
{
    while(1)
    {
        //Task_sleep(1000);
        Hwi_Handle myHwi;
        Hwi_Params hwiParams;
        Hwi_Params_init(&hwiParams);
        hwiParams.arg = 45;
        /* Setup RTC */
        //RTC_C_initCalendar(&myCalendarTime, RTC_C_FORMAT_BINARY);

        /* Setup Hwi */


             RTCFun_init();

        
        RTC_C_setCalendarAlarm(2,16,3,20); //(minutes, hour, day of week, day of month)

        //creating Interrupt
        MAP_RTC_C_enableInterrupt(RTC_C_CLOCK_ALARM_INTERRUPT);
        MAP_Interrupt_enableInterrupt(INT_RTC_C);
        MAP_Interrupt_enableMaster();
        MAP_RTC_C_startClock();



        myHwi = Hwi_create(INT_RTC_C, RTCIsrFun, &hwiParams, NULL);

        //Send device into LPM3.5
        MAP_PCM_shutdownDevice(PCM_LPM35_VCORE0);

        System_printf("Back in active mode\n");
                //SysMin will only print to the console when you call flush or exit
               System_flush();
    }

}


/* RTC ISR */
void RTCIsrFun(uintptr_t arg)
{
   RTC_C_clearInterruptFlag(RTC_C_getInterruptStatus());
   
      GPIO_write(Board_LED1, Board_LED_ON);

}

over 8 years ago

0 DavidL over 8 years ago

TI__Mastermind 25045 points

Hello,

Which version of the Launchpad are you using (RED or BLACK)??

Best regards,

David

0 suraj H over 8 years ago in reply to DavidL

Prodigy 210 points

HI David,

It is red.

Regards
Suraj

0 suraj H over 8 years ago in reply to suraj H

Prodigy 210 points

Hi David,

I created a new Hwi interrupt in sysbios > scheduling from .cfg file. And defined my ISR function and RTC_c interrupt number (45) over there. Hwi started working.

Below is the working code for Hwi added in cfg file. But I didn't get, why the above dynamic Hwi from my application file was not working, whereas both the static and dynamic Hwi are calling the same function?

/* Use UARTMon with TI and GCC toolchains only */
if (!Program.build.target.$name.match(/iar/)) {
    var UARTMon = xdc.useModule('ti.tirtos.utils.UARTMon');
    UARTMon.stackSize = 1024;
}
var halHwi0Params = new halHwi.Params();
halHwi0Params.instance.name = "halHwi0";
halHwi0Params.maskSetting = xdc.module("ti.sysbios.interfaces.IHwi").MaskingOption_SELF;
Program.global.halHwi0 = halHwi.create(45, "&RTCIsrFun", halHwi0Params);

- Regards

Suraj

0 ToddMullanix over 8 years ago in reply to suraj H

TI__Guru* 96960 points

If you have created the Hwi in the .cfg file. you cannot create it again during runtime. You can look in Tools->ROV->Hwi to what interrupts are created.

Todd

0 DavidL over 8 years ago in reply to ToddMullanix

TI__Mastermind 25045 points

Hi Suraj,

I'm glad that you got it work. Not really sure why the dynamic HWi creation was not working for you I checked your code and that's how I do it with the new SimpleLink MSP432 SDK. Maybe it was already created in the .cfg as Todd mentioned already.

Anyway I would like to recommend you to start using new SimpleLink MSP432 SDK www.ti.com/.../simplelink-msp432-sdk.

Best regards,

David

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RTOS/MSP432P401R: Issue with Hwi interrupt service routine. MSP432P401R TI RTOS version 2.20. E_alreadyDefined: Hwi already defined: intr# 45