MSPM0L1306: Definition of __WFI()

Wayne Huang

Part Number: MSPM0L1306

Dear champs,

I am asking this for our customer.

We usually have this in main() of the example codes.

    while (1) {
        __WFI();
    }

Where and what is the definition of __WFI();?

over 1 year ago

0 Gary Gao over 1 year ago

TI__Mastermind 39650 points

Please refer to this

/**
\brief Wait For Interrupt
\details Wait For Interrupt is a hint instruction that suspends execution until one of a number of events occurs.
*/
#define __WFI() __ASM volatile ("wfi":::"memory")

0 Wayne Huang over 1 year ago in reply to Gary Gao

TI__Genius 16325 points

Dear Gary,

What if the user does not use __WFI() in the infinite while loop?

Does it matter?

+1 Gary Gao over 1 year ago in reply to Wayne Huang

TI__Mastermind 39650 points

It is a command to make the device go into low power mode, if you do not need low power mode you can not use it.

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MSPM0L1306: Definition of __WFI()