RTOS/TM4C1294NCPDT: Hwi Working Principle Problem?

You cannot use the example as is as you don't know which device the example is written for. It maybe even a psuedo example that is not targeted to any specific TI device.  The Hwi_enableinterrupt(5) and Hwi_enableinterrupt(6) are for the bus fault and usage fault in the TM4C device. Please look at the Exception and Interrupt tables in the datasheet for details. For example, if you want to enable interrupt for Timer2A then it is mapped to vector number 39 and you will call Hwi_enableinterrupt(39) to enable it. You need to find out which peripheral you want to generate interrupt and enable it accordingly. 

Hi Charles;

I tried timer vector numbers too, but it is not working. Also I create timer interrupt. For both timer1B and timer2A, then enabled Hwi interrupt that function.So I tried both way but nothing happend result is same as before.

Hi Charles;

Yes I have done all you said, also I configured the Timer ;

*  ======== empty.c ========
 */
/* XDCtools Header files */
#include <xdc/std.h>
#include <xdc/runtime/System.h>

/* BIOS Header files */
#include <ti/sysbios/BIOS.h>
#include <ti/sysbios/knl/Task.h>
#include <ti/sysbios/hal/Timer.h>

/* TI-RTOS Header files */
// #include <ti/drivers/EMAC.h>
#include <ti/drivers/GPIO.h>
// #include <ti/drivers/I2C.h>
// #include <ti/drivers/SDSPI.h>
// #include <ti/drivers/SPI.h>
// #include <ti/drivers/UART.h>
// #include <ti/drivers/USBMSCHFatFs.h>
// #include <ti/drivers/Watchdog.h>
// #include <ti/drivers/WiFi.h>
#include <xdc/runtime/Error.h>
#include <ti/sysbios/hal/Hwi.h>

Bool Hwi6 = FALSE;
Timer_Handle tmrH;
/* Board Header file */
#include "Board.h"
Void myIsr6(UArg arg);

/* Runs when interrupt 6 occurs */

main(Void) {
    Timer_Params tmrP;
    Hwi_Params hwiParams;
    Hwi_Handle myHwi;
    Error_Block eb;
/* Initialize error block and hwiParams to default values */
    Error_init(&eb);
    Hwi_Params_init(&hwiParams);
/* Set myIsr6 parameters */
    hwiParams.arg = 12;
    hwiParams.enableInt = FALSE;
/* Create a Hwi object for interrupt number 6
* that invokes myIsr6() with argument 12 */

    myHwi = Hwi_create(51, myIsr6, &hwiParams, &eb);
    if (myHwi == NULL) {
            System_abort("Hwi create failed");
    }
    Hwi_enableInterrupt(51);

    Timer_Params_init(&tmrP);
    tmrP.arg=0;
    tmrP.period=1000000;
    tmrP.periodType=Timer_PeriodType_MICROSECS;
    tmrH=Timer_create(51,NULL,&tmrP,NULL);
    Timer_start(tmrH);

/* start BIOS */
    BIOS_start();
}
Void myIsr6(UArg arg){
    System_printf("Hello Hwi");
    if(arg == 12){
       Hwi6 = TRUE;
    }
}
/* The Idle thread checks for completion of interrupts 5 & 6
* and exits when they have both completed. */
Void myIdleFunc()
{
    if(Hwi6){
        System_printf("Both interrupts have occurred!");
        System_exit(0);
    }
}

But the result is the same no change , no console log and when I stop the program and run step by step it stuck on SysMin_putch function;

This is same for Timer 2A ( vector num: 39) , Timer 3A ( Vector num: 51) and Timer 3B( vector num: 52) . All results are same. I dont understand, it should work.

Hwi_Handle hwi0Hand;
Hwi_Params hwi0Params;

Timer_Handle timer2Handle;
Timer_Params timer2Params;

Hwi_Params_init(&hwi0Params);
hwi0Params.enableInt=TRUE;


Void hwi0Fxn(){

   some code.....
   .......
   .......

}


int main(void){
    hwi0Hand=Hwi_create(39,hwi0Fxn,&hwi0Params,NULL);

    /* In here timer param init, argument and etc setting*/
    ....
    ....
    ....
    timer2Handle=Timer_create(2,NULL,&timer2Params,NULL);

    /*In here the Timer is set for Hwi Interrupt*/

    System_printf("Starting the example\nSystem provider is set to SysMin. "
                  "Halt the target to view any SysMin contents in ROV.\n");
    /* SysMin will only print to the console when you call flush or exit */
    System_flush();

    /* Start BIOS */
    BIOS_start();

}

Hi Charles;

Thank you , it is good example for Timer usage and very enlightening information.I used it and timer interrupt is worked. Can we implement for Hwi like Timer İnterrupt. All I want to know is about use Hwi by setting Timer interrupt like you did before. For example can we do something like that code above ? Thank you again.

Best Regards