pmm_ex2_fastWakeUp.c File Reference

#include "driverlib.h"

Go to the source code of this file.

Macros
#define	DUTY_CYCLE1   20
#define	TIMER_PERIOD   40

Functions
void	main (void)
void	TIMER0_A1_ISR (void)

Macro Definition Documentation

DUTY_CYCLE1

#define DUTY_CYCLE1   20

PMM @ Core 0, SVSL/SVSH optimized for fast wake up

Description: The PMM is at default core level 0. The SVS high side (Vcc) is configured for Fast Performance mode. The SVS low side (Vcore) is disabled. Specs: Wake up from interrupt: 5us* (as SVSL disabled) Response to SVS event(propogation delay): 2us* (as SVSH enabled in LPM) Current consumption by SVS: 2uA* (as SVSH enabled in Fast Performance Mode) !Note: Refer to the device D/s for actual values

The timer outputs a PWM with a frequency ~800Hz. The LED at P1.0 is toggled on entry into the ISR. The time difference between PWM event and LED toggle =SVS wakeup time + interrupt latency + LED turn on = ~20+us.

NOTE: TERMINATE THE DEBUG SESSION BEFORE TESTING THIS EXAMPLE Refer section 2.2.8.1 for debug impact on SVS

ACLK = REFO = TACLK = ~32KHz, MCLK = SMCLK = default DCO ~1.045MHz//!

     MSP430F54xA
   ---------------

/	|
–	RST
TA0.4	--> output from timer
P1.0	--> LED

This example uses the following peripherals and I/O signals. You must review these and change as needed for your own board:

• PMM peripheral
• GPIO Port peripheral

This example uses the following interrupt handlers. To use this example in your own application you must add these interrupt handlers to your vector table.

• Timer0_A5.

Definition at line 74 of file pmm_ex2_fastWakeUp.c.

TIMER_PERIOD

#define TIMER_PERIOD   40

Definition at line 75 of file pmm_ex2_fastWakeUp.c.

Function Documentation

main()

void main

(

void

)

Definition at line 77 of file pmm_ex2_fastWakeUp.c.

References __no_operation(), DUTY_CYCLE1, GPIO_setOutputLowOnPin(), and TIMER_PERIOD.

TIMER0_A1_ISR()

void TIMER0_A1_ISR

(

void

)

Definition at line 186 of file pmm_ex2_fastWakeUp.c.