External clock initialization problem on MSP430

Hi Clemens,

Thanks for your reply. I tested using UCS_bypassXT1() but it seems that the problem has been shifted to the initialization of the second clock High Frequency. As I told you I am using 2 external clocks (1 LF oscillator and 1 HF quartz 32MHz).

Here is my code for the initialization. It seems now (only in release mode and not in debug) that the MCU blocks at the execution of this function:

void Main_ClockInit(void)

{

    __disable_interrupt();
    
    //LF clock initialization
    UCS_clearFaultFlag(UCS_DCOFFG|UCS_XT1LFOFFG|UCS_XT2OFFG);
   
    //Init xt1
    UCS_bypassXT1(UCS_XT1_LOW_FREQUENCY);
//    UCS_turnOnLFXT1(EXT_LF_CRYSTAL_DRIVE, EXT_LF_CRYSTAL_CAP);
   
    UCS_setExternalClockSource(L32768, 32000000);
    
    //Init ACLK on xt1
    UCS_initClockSignal(UCS_ACLK, UCS_XT1CLK_SELECT, UCS_CLOCK_DIVIDER_1);
    
    //HF clock initialization  
    UCS_turnOnXT2WithTimeout(UCS_XT2_DRIVE_24MHZ_32MHZ, 65000);

    SFR_disableInterrupt(SFR_OSCILLATOR_FAULT_INTERRUPT);
    
    __no_operation();__no_operation();__no_operation();

UCS_initClockSignal(UCS_MCLK, UCS_XT2CLK_SELECT,1);

/* MCU is blocked in the function above */

__no_operation();__no_operation();__no_operation();

UCS_initClockSignal(UCS_SMCLK, UCS_XT2CLK_SELECT, 1);

__no_operation();__no_operation();__no_operation();

}

Could you tell me what is wrong in this code. Why the MCU freezes when init MCLK.

Thanks in advance for your kind help.

Best regards

Mickael

Does UCS_turnOnXT2WithTimeout() succeed? It does not make sense to call a *WithTimeout function without checking the error code.

Please note that UCS_CLOCK_DIVIDER_1 does not have the value 1.

The function UCS_initClockSignal() does not contain any loop. Where exactly does it block?

Hi,
Previously, I used the UCS_turnOnXT2 function but it didn't work, so I thought it was better to use the one with timeout in order to let the quartz stabilize maybe. Concerning the error code that I don't read is that I don't need it, because if it doesn't work there is nothing to do, the product cannot be used.

I imagine that this constant doesn't have the value 1, that's I am calling the function with this constant and not 1.

Actually, how did I test it, classically I toggled a LED before calling the function, and toggled back the LED at the return of the function. But is doesn't appear here in the code I sent.

Is there any steps missing to complete the clocks initialization?

Regards.
Mickael