Tiva™ C Series EK-TM4C123GXL - watchdog 1 not start

Tomasz Pliszczak

Other Parts Discussed in Thread: TM4C123GH6PM

hello

I learn the basic configuration of TM4C123GH6PM and I have a problem with WDT1.

Configuration and start Watchdog0 working properly. When I tried to run Watchdog1 I got the error "Trouble Reading Memory Block at 0x40001000" and WDT1 is not running. Register RCGCWD is correctly, bit R1 = 1.

over 11 years ago

0 Markel Robregado over 11 years ago

Guru 86755 points

Hi Tomasz,

Post your code so others can review it.

-kel

0 Tomasz Pliszczak over 11 years ago in reply to Markel Robregado

Prodigy 30 points

The code is reduced only to activate the WDT.
If I turn WDT0 (reset mode) everything works and the LED blinks.

#include "utils/ustdlib.h"
#include "inc/hw_types.h"
#include "inc/hw_memmap.h"
#include "driverlib/sysctl.h"
#include "driverlib/pin_map.h"
#include "driverlib/debug.h"
#include "driverlib/hibernate.h"
#include "driverlib/gpio.h"
#include "driverlib/systick.h"
#include "driverlib/timer.h"
#include "driverlib/watchdog.h"

#ifdef DEBUG
void
__error__(char *pcFilename, unsigned long ulLine)
{
}
#endif


int main(void)
{
	SysCtlClockSet(SYSCTL_SYSDIV_5|SYSCTL_USE_PLL|SYSCTL_OSC_INT);  // 40 MHz int

	//green LED on
	SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
	GPIOPinTypeGPIOOutput(GPIO_PORTF_BASE, GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3);
	GPIOPinWrite(GPIO_PORTF_BASE,GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3, 0x08);


	SysCtlPeripheralEnable(SYSCTL_PERIPH_WDOG0);

	WatchdogStallEnable(WATCHDOG0_BASE);

	WatchdogReloadSet(WATCHDOG0_BASE,0xFEEFEE);

	WatchdogResetEnable(WATCHDOG0_BASE);
	WatchdogEnable(WATCHDOG0_BASE);

	while(1)
	{

	}
}

For WDT1 memory map is not available (error), WDT1 does not start.
I tried to insert loops and wait until the WRC bit = 0 in the registry WDTCTL - it did not help.

#include "utils/ustdlib.h"
#include "inc/hw_types.h"
#include "inc/hw_memmap.h"
#include "driverlib/sysctl.h"
#include "driverlib/pin_map.h"
#include "driverlib/debug.h"
#include "driverlib/hibernate.h"
#include "driverlib/gpio.h"
#include "driverlib/systick.h"
#include "driverlib/timer.h"
#include "driverlib/watchdog.h"

#ifdef DEBUG
void
__error__(char *pcFilename, unsigned long ulLine)
{
}
#endif


int main(void)
{
	SysCtlClockSet(SYSCTL_SYSDIV_5|SYSCTL_USE_PLL|SYSCTL_OSC_INT);  // 40 MHz int

	//green LED on
	SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
	GPIOPinTypeGPIOOutput(GPIO_PORTF_BASE, GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3);
	GPIOPinWrite(GPIO_PORTF_BASE,GPIO_PIN_1|GPIO_PIN_2|GPIO_PIN_3, 0x08);

	SysCtlPeripheralEnable(SYSCTL_PERIPH_WDOG1);

	WatchdogStallEnable(WATCHDOG1_BASE);

	WatchdogReloadSet(WATCHDOG1_BASE,0xFEEFEE);

	WatchdogResetEnable(WATCHDOG1_BASE);
	// WRC in WDTCTL
	while(!(HWREG(WATCHDOG1_BASE + 0x008)>>31))
	{
	}
	WatchdogEnable(WATCHDOG1_BASE);
	// WRC in WDTCTL
	while(!(HWREG(WATCHDOG1_BASE + 0x008)>>31))
	{
	}

	while(1)
	{

	}
}