FRDMK22 enable PEE mode

[claudiobrunelli]

Hi.

I'd like to move my frdmk22 board, to PEE clock mode but I can't see different clock even changing values

in the below code.

Do I forget something ? Or ther's something wrong in my code ?

Thanks in advance...

Claudio

void PEE_InitMode(void)
{
    MCG->C2 = 0x2C;
    MCG->C1 = 0x98;
    while ((MCG->S & MCG_S_OSCINIT0_MASK) == 1)    ;    
    while ((MCG->S & MCG_S_IREFST_MASK) == 0);        
    while ((MCG->S & MCG_S_CLKST(10)) == 0x10);

    MCG->C5 = 0x03;  // /4
    MCG->C6 = 0x41;  // *25
    while ((MCG->S & MCG_S_PLLST_MASK) == 1);
    while ((MCG->S & MCG_S_LOCK0_MASK) == 1);

    MCG->C1 = 0x01;
    while ((MCG->S & MCG_S_CLKST(01)) == 0x01);

    SIM->SOPT2 |= SIM_SOPT2_PLLFLLSEL_MASK;
}

[kerryzhou]

Hi Claudio Brunelli,

   Enable the PEE mode need to follow this diagram.

I use the KDS PE create a project which is configuring the PEE mode,

I attach the project for your reference.

Have a great day,
Kerry

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[claudiobrunelli]

Hi Kerry.

Sorry the delay in answering you. I prefer don't use PE. But I'm going to try your suggestion to use PE generated code. I will write soon as I can try.

Thanks.

Claudio

[kerryzhou]

Hi Claudio,

   PE code is just for your reference, you can don't use it, but just follow the code process write your own code.

Have a great day,
Kerry

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