ucs_ex2_VLOSourcesACLK.c

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//******************************************************************************
//*****************************************************************************
#include "driverlib.h"
 
//*****************************************************************************
//
//Variable to store current clock values
//
//*****************************************************************************
uint32_t clockValue;
 
//*****************************************************************************
//
//Variable to store status of Oscillator fault flags
//
//*****************************************************************************
uint16_t status;
 
void main (void)
{
    //Stop watchdog timer
    WDT_A_hold(WDT_A_BASE);
 
    //VLO Clock Sources ACLK
    UCS_initClockSignal(
        UCS_ACLK,
        UCS_VLOCLK_SELECT,
        UCS_CLOCK_DIVIDER_1
        );
 
    //VLO Clock Sources ACLK
    UCS_initClockSignal(
        UCS_FLLREF,
        UCS_REFOCLK_SELECT,
        UCS_CLOCK_DIVIDER_1
        );
 
    //ACLK set out to pin
    GPIO_setAsPeripheralModuleFunctionOutputPin(
        GPIO_PORT_P11,
        GPIO_PIN0
        );
 
    // Enable global oscillator fault flag
    SFR_clearInterrupt(SFR_OSCILLATOR_FAULT_INTERRUPT);
    SFR_enableInterrupt(SFR_OSCILLATOR_FAULT_INTERRUPT);
 
    // Enable global interrupt
    __bis_SR_register(GIE);
 
    clockValue = UCS_getACLK();
 
    //Enter LPM3
    __bis_SR_register(LPM3_bits);
 
    //For debugger
    __no_operation();
}
 
#if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)
#pragma vector=UNMI_VECTOR
__interrupt
#elif defined(__GNUC__)
__attribute__((interrupt(UNMI_VECTOR)))
#endif
void NMI_ISR(void)
{
  do {
    // If it still can't clear the oscillator fault flags after the timeout,
    // trap and wait here.
    status = UCS_clearAllOscFlagsWithTimeout(1000);
  } while(status != 0);
}