MSP430F5659 Fails to boot without programming pod and CCS debug

Do you clear the oscillator fault flags? Program starts with fault flags set.

Yes, Here's the initialization I have: (below)

I've notice that the problem seems to only occur when the unit is powered totally off, then back on.

If I keep power on, unplug the FET430UIF, and simply cause a reset (~RST to GND), the unit resets, and goes on its merry way.

Its when I power it down (no pod connected), then bring power back up that I have the issue.

There is a small switching pwr supply on board, driven by a lab supply.

So, I suspect that perhaps the power is fluctuating and causing something to hang - or even re-set the flags you show above.  (Or some others).

Just a thought.  I'm still hunting.

Thanks for the ideas.

 SFRIE1_L = 0x0000;
 SFRIE1_H = 0x0000;
 SFRRPCR_L = 0x0000;
 SYSCTL   = 0x0000;      /* System control */

 while(BAKCTL & LOCKIO) BAKCTL &= ~(LOCKIO); // Unlock XT1 pins

 UCSCTL6 &= ~(XT1OFF);    // XT1 On
 UCSCTL6 |= XCAP_3;    // Internal load cap

// Loop until XT1 fault flag is cleared
 do
 {
  UCSCTL7 &= ~(XT2OFFG + XT1LFOFFG + DCOFFG); // Clear XT2,XT1,DCO fault
  SFRIFG1 &= ~OFIFG;    // Clear fault flags
 }
 while (SFRIFG1 & OFIFG);   // Test oscillator fault flag

 UCSCTL6 &= ~(XT1DRIVE_3);
 UCSCTL4 |= SELA_0;

 UCSCTL0  = 0x0000;   /* UCS Control Register 0 */

//Initialize LFXT1
 if ((UCSCTL6 & XT1DRIVE_3) != XT1DRIVE_3) UCSCTL6_L |= XT1DRIVE1_L + XT1DRIVE0_L;
 UCSCTL6 &= ~(XTS + XCAP_0 + XT1BYPASS);     //Enable LF mode and clear xcap and bypass
 UCSCTL6 |= XCAP_3;

 while (UCSCTL7 & XT1LFOFFG)
 {
  UCSCTL7 &= ~(XT1LFOFFG); //Clear OSC fault Flags
  SFRIFG1 &= ~OFIFG;  //Clear OFIFG fault flag
 }

 UCSCTL6 = ( UCSCTL6 &  ~(XT1DRIVE_3) ) | (XT1DRIVE_3); //set requested Drive mode
 UCSCTL6 &= ~XT1OFF;     //Switch ON XT1 oscillator

// MCLK and SMCLK to 1.048576 MHz and fDCO = 2.097152 MHz
// Timer 0 A0
 TA0CTL =  TACLR;  // Timer0_A5 Control: OFF, NO INTERRUPT, CLEAR INTERRUPT FLAG, CLEAR TA0R register
 TA0CCR0  = 2047;  // (Note Value is this +1.  See SLAU208M doc )
 TA0CCTL0 = CCIE;  // Enable Interrupt on CCR match
 TA0CTL = TASSEL__SMCLK | MC__UP | ID__1 ; // Timer0_A5 Control: SMCLK, OFF, NO INTERRUPT, CLEAR INTERRUPT FLAG

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And what about something simple, like trying P1.0 blink example, just to be sure about supply.

I have MSP430F5659 board with external 3.3V supply and it's working OK (just using it at the moment for testing my sbw+ flasher).