Error connecting to the target

Hello All,

I am new here and I was trying to blink the led with PWM timer mode.  I wrote following code and  the blue led was blinking on launch pad.

As I closed the project with the icon on CCS debug mode, however, there was an error message 'Error connecting to the target'. I clicked the 'Retry' button on the dialog and I had an 'Error connectiong to the target: Frequency is out of range' message. I clicked the 'Retry' button again then CCS started to crash.  

I restart CCS again but the error messages are persistant. Now, I can't connect to the target anymore and led is still blinking on the target:

CORTEX_M4_0: GEL Output:

Memory Map Initialization Complete

CORTEX_M4_0: Error connecting to the target

CORTEX_M4_0: Error connecting to the target: Frequency is out of range.

Q1) How can I connect to the target again from CCS debug mode? I am using CCSv5.3 and Windows XP with SP2.

Q2) Did I do something wrong?

 Thanks,

Bill

int

main

(void)

{

SysCtlClockSet(SYSCTL_SYSDIV_64 | SYSCTL_USE_OSC | SYSCTL_OSC_MAIN |

SYSCTL_XTAL_16MHZ);

//PF2(blue) - T1CCP0: Timer_A

SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);

GPIOPinConfigure(GPIO_PF2_T1CCP0);

GPIOPinTypeTimer(GPIO_PORTF_BASE, GPIO_PIN_2);

SysCtlPeripheralEnable(SYSCTL_PERIPH_TIMER1);

TimerConfigure(TIMER1_BASE, TIMER_CFG_16_BIT_PAIR |TIMER_CFG_A_PWM);

TimerLoadSet(TIMER1_BASE, TIMER_A, 0xFFFF);

//PWM output inverted for Timer_A

HWREG(TIMER1_BASE + TIMER_O_CTL) |= 0x40;

TimerMatchSet(TIMER1_BASE, TIMER_A, TimerLoadGet(TIMER1_BASE,TIMER_A)/5);

TimerEnable(TIMER1_BASE, TIMER_A);

while(1);

}