CCS/TMS320F28388D: Using Watchdog Interupt in SYS/BIOS Project

//#############################################################################
//
// FILE:   watchdog_ex1_service.c
//
// TITLE:  Servicing Watchdog Example
//
//! \addtogroup driver_example_list
//! <h1> Watchdog </h1>
//!
//! This example shows how to service the watchdog or generate a wakeup
//! interrupt using the watchdog. By default the example will generate a
//! Wake interrupt.  To service the watchdog and not generate the interrupt,
//! uncomment the SysCtl_serviceWatchdog() line in the main for loop.
//!
//! \b External \b Connections \n
//!  - None.
//!
//! \b Watch \b Variables \n
//!  - wakeCount - The number of times entered into the watchdog ISR
//!  - loopCount - The number of loops performed while not in ISR
//!
//
//#############################################################################
// $TI Release: F2838x Support Library v2.00.00.03 $
// $Release Date: Sun Sep 29 07:45:41 CDT 2019 $
// $Copyright:
// Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com/
//
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// 
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// 
//   Redistributions in binary form must reproduce the above copyright
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//   distribution.
// 
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// 
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
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// $
//#############################################################################

//
// Included Files
//
#include "driverlib.h"
#include "device.h"

//
// Globals
//
uint32_t wakeCount;
uint32_t loopCount;

//
// Function Prototypes
//
__interrupt void wakeupISR(void);

//
// Main
//
void main(void)
{

    //
    // Initialize device clock and peripherals
    //
    Device_init();

    //
    // Initialize PIE and clear PIE registers. Disables CPU interrupts.
    //
    Interrupt_initModule();

    //
    // Initialize the PIE vector table with pointers to the shell Interrupt
    // Service Routines (ISR).
    //
    Interrupt_initVectorTable();

    //
    // Re-map watchdog wake interrupt signal to call the ISR function in this
    // example
    //
    Interrupt_register(INT_WAKE, &wakeupISR);

    //
    // Clear the counters
    //
    wakeCount = 0;
    loopCount = 0;

    //
    // Set the watchdog to generate an interrupt signal instead of a
    // reset signal
    //
    SysCtl_setWatchdogMode(SYSCTL_WD_MODE_INTERRUPT);

    //
    // Enable the watchdog wake interrupt signal
    //
    Interrupt_enable(INT_WAKE);

    //
    // Enable Global Interrupt (INTM) and realtime interrupt (DBGM)
    //
    EINT;
    ERTM;

    //
    // Reset the watchdog counter
    //
    SysCtl_serviceWatchdog();

    //
    // Enable the watchdog
    //
    SysCtl_enableWatchdog();

    //
    // Loop till the specified LOOP_COUNT value.
    //
    for(;;)
    {
        loopCount++;
		
        //
        // Uncomment SysCtl_serviceWatchdog to just loop here.
        // Comment SysCtl_serviceWatchdog to have watchdog timeout and trigger
        // an interrupt signal to execute the wakeupISR
        //
        // SysCtl_serviceWatchdog();
    }
}

//
// Wakeup ISR - The interrupt service routine called when the watchdog
//              triggers the wake interrupt signal
//
__interrupt void
wakeupISR(void)
{
    wakeCount++;

    //
    // Acknowledge this interrupt located in group 1
    //
    Interrupt_clearACKGroup(INTERRUPT_ACK_GROUP1);
}

//
// End of File
//