error ADC1

[omendiola]

Hi.

i want initialize ADC1 for MK22FN512VMP12, i write in SIM_SCGC6 for enable ADC1 Clock Gate Control, but when i write in ADC1_CFG1 or ADC1_SC1A for star a conversion, the program return a follow error.

///////////////////////////////////////////

Default_Handler:

  b    .

  .size    Default_Handler, . - Default_Handler

/*    Macro to define default handlers. Default handler

*    will be weak symbol and just dead loops. They can be

*    overwritten by other handlers */

////////////////////////////////////////////

what is the problem? can you help me?

pd. Si alguien habla español se lo agradeceria mucho.

[kerryzhou]

Hi omar mendiola,

    How did you enable ADC1 in SIM_SCGC6? did you really set the ADC1 bit in the SIM_SCGC6?

    I configure it like this:

  SIM_SCGC6 |= SIM_SCGC6_ADC1_MASK;

  ADC1_SC1A =0X1A;

  ADC1_CFG1 =0;

    The MCU works ok on my side, it didn't enter default handler.

    If you still have problem, please paste your problem code, I would like to help you to check it.

Have a great day,
Jingjing

-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------

[omendiola]

hi jingjing

this is the code:

======================================

SIM_SCGC6 |= (1<<7);

    __asm("NOP");

    ADC1_CFG1 =  0b00011000;

    __asm("NOP");

    ADC1_SC2 = 0x00;

    ADC1_SC1A = 19;

    for(;;)

    {     

        if(u32Test)

        {

            u32Test = ADC1_RA;

        }

    }

======================================

i first set up the ADC1, after i start a conversion in channel 19, but when i write in  ADC1_CFG1 or any other register of ADC1, debug return the same error.

do you think that problem is into my MCU?

[kerryzhou]

Hi omar mendiola,

      If you want to write the ADC code, you can't just configure it like this, I suggest you refer to the KSDK K22 ADC sample code, please go to this link：

  www.freescale.com/ksdk

    Download the KSDK1.2.0, and install it, then you can find the ADC sample code from this path:

C:\Freescale\KSDK_1.2.0\examples\frdmk22f\driver_examples\adc16

Wish it helps you!

Have a great day,
Jingjing

-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------