Hi All ,
I am trying to implement a watchdog timer which resets the device.
When running the program ,
The watchdog counter WDCNTR overflows, but the WDFlag gets set and then immediately resets itself , instead of waiting for me the clear the WDFlag .The program then continues running . I am not servicing the watchdog. Could you tell me what I am missing ?
#include "F28x_Project.h" // Device Headerfile and Examples Include File
long int LoopCount = 0;
void main(void)
{
// unsigned long delay;
// Step 1. Initialize System Control:
// PLL, WatchDog, enable Peripheral Clocks
// This example function is found in the F2837xD_SysCtrl.c file.
InitSysCtrl();
// Step 2. Initialize GPIO:
// This example function is found in the F2837xD_Gpio.c file and
// illustrates how to set the GPIO to it's default state.
// InitGpio();
// Step 3. Clear all interrupts and initialize PIE vector table:
// Disable CPU interrupts
DINT;
// Initialize the PIE control registers to their default state.
// The default state is all PIE interrupts disabled and flags
// are cleared.
// This function is found in the F2837xD_PieCtrl.c file.
InitPieCtrl();
// Disable CPU interrupts and clear all CPU interrupt flags:
IER = 0x0000;
IFR = 0x0000;
// Initialize the PIE vector table with pointers to the shell Interrupt
// Service Routines (ISR).
// This will populate the entire table, even if the interrupt
// is not used in this example. This is useful for debug purposes.
// The shell ISR routines are found in F2837xD_DefaultIsr.c.
// This function is found in F2837xD_PieVect.c.
InitPieVectTable();
// Step 4. Initialize all the Device Peripherals:
// This function is found in F2837xD_InitPeripherals.c
// InitPeripherals(); // Not required for this example
// Connect the watchdog to the WAKEINT interrupt of the PIE
// Write to the whole SCSR register to avoid clearing WDOVERRIDE bit
EALLOW;
WdRegs.SCSR.all = 0;
EDIS;
EINT; // Enable Global Interrupts
// Reset the watchdog counter
ServiceDog();
// Enable the watchdog
EALLOW;
WdRegs.WDCR.all = 0x0028;
EDIS;
// Step 6. IDLE loop. Just sit and loop forever (optional):
for(;;)
{
LoopCount++;
// ServiceDog();
}
}
