MSPM0G3507: __WFI() function

Krushna Thete

Intellectual 370 points

Part Number: MSPM0G3507

Tool/software:

hii there

while writing any code is it necessary to write a __WFI() function?

should I write like this?

int main()

{

while(1)

{

if(flag == true)

{

transmit_msg();

flag = false;

}

void IRQ_Handler(void)

{

flag = true;

}

over 2 years ago

+1 Keith Barkley over 2 years ago

Guru 44035 points

_WFI() is only needed if you want to pause the main thread and let the interrupts do all the work.

Your code here is the most interrupt safe, since IRQ handler gets in and out quickly. Note that "flag" should be volatile. However, if you have a lot of time between interrupts, it is perfectly fine to call transmit_msg() in the handler.

+1 Luke Ledbetter over 2 years ago in reply to Keith Barkley

TI__Mastermind 27320 points

The WFI or WFE functions are wait for interrupt/event and like Keith says it will pause the main thread and put the CPU into the low-power mode you have set.

Regards,
Luke

Arm-based microcontrollers

Arm-based microcontrollers forum

MSPM0G3507: __WFI() function