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MSP430F6779 TI-RTOS 2_00_02_36 MCLK

lin-00
Prodigy 40 points
Other Parts Discussed in Thread: MSP430WARE

I am using MSP430F6779IPZR, and TI-RTOS 2_00_02_36.

I need to setup MCLK to 24MHz  and Vcore.  What is the appropriate way to do?
Calling MSP430ware driverlib API or

BIOS.cpuFreq.lo = 24576000 or

XDC tool
=>platform settings , CPU clock frequency


I try it and find only MSP430ware driverlib API work. But I dont know if there will be any side effects by doing it.

  • 0
    Guru 227245 points

    lin-00 said:
    What is the appropriate way to do?

    First, you need to raise PMMCOREV to 3, as this is required for 24MHz operation (or else the CPU will crash on the high speed).
    Next is to use driverlib to raise CPU frequency to 24MHz.

    AFAIK, the settings in XDC tool and BIOS.cpuFreq IMHO do not set the CPU frequency but tell the other code which CPU frequency you have, so it knows how to work properly at this speed. Especially regarding delays, which might have to be calculated at compile time..

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