MSP432P401R怎样降低功耗

我是个新手，有没有更简单明了的东西呢？谢谢

我下载了一个Ti官方低功耗例程，就是您说的设置io电平，以及进入LPM3模式，烧入后电流可以降到1.2uA左右，然后使用Empty Project例程整合低功耗例程到Task返回函数里，只能降低到1.0mA左右，而且无法唤醒。不知道有没有什么更好的方法降低功耗。新手的我现在很绝望啊。谢谢了

要结合具体的应用来分析的，建议详细描述下你的需求，并提供下现在的代码

以下为代码
/* XDCtools Header files */
#include <xdc/std.h>
#include <xdc/runtime/System.h>

/* BIOS Header files */
#include <ti/sysbios/BIOS.h>
#include <ti/sysbios/knl/Task.h>

/* TI-RTOS Header files */
#include <ti/drivers/GPIO.h>
// #include <ti/drivers/I2C.h>
// #include <ti/drivers/SDSPI.h>
// #include <ti/drivers/SPI.h>
// #include <ti/drivers/UART.h>
// #include <ti/drivers/Watchdog.h>
// #include <ti/drivers/WiFi.h>

/* Board Header file */
#include "Board.h"
void MSP_LOWPOWER(void);
#define TASKSTACKSIZE 512
Task_Struct task0Struct;
Char task0Stack[TASKSTACKSIZE];
/*
* ======== heartBeatFxn ========
* Toggle the Board_LED0. The Task_sleep is determined by arg0 which
* is configured for the heartBeat Task instance.
*/
Void heartBeatFxn(UArg arg0, UArg arg1)
{
Task_sleep((UInt)arg0);
/* Hold the watchdog */
WDTCTL = WDTPW | WDTHOLD;
/* Configuring P1.0 as output and P1.1 (switch) as input with pull-up resistor*/
/* Rest of pins are configured as output low */
/* Notice intentional '=' assignment since all P1 pins are being deliberately configured */
P1DIR = ~(uint8_t) BIT1;
P1OUT = BIT1;
P1REN = BIT1; // Enable pull-up resistor (P1.1 output high)
P1SEL0 = 0;
P1SEL1 = 0;
P1IFG = 0; // Clear all P1 interrupt flags
P1IE = BIT1; // Enable interrupt for P1.1
P1IES = BIT1; // Interrupt on high-to-low transition

// Enable Port 1 interrupt on the NVIC
NVIC->ISER[1] = 1 << ((PORT1_IRQn) & 31);

// Terminate all remaining pins on the device
P2DIR |= 0xFF; P2OUT = 0;
P3DIR |= 0xFF; P3OUT = 0;
P4DIR |= 0xFF; P4OUT = 0;
P5DIR |= 0xFF; P5OUT = 0;
P6DIR |= 0xFF; P6OUT = 0;
P7DIR |= 0xFF; P7OUT = 0;
P8DIR |= 0xFF; P8OUT = 0;
P9DIR |= 0xFF; P9OUT = 0;
P10DIR |= 0xFF; P10OUT = 0;

/* Configure Port J */
PJDIR |= (BIT2 | BIT3); PJOUT &= ~(BIT2 | BIT3);

/* PJ.0 & PJ.1 configured for XT1 */
PJSEL0 |= BIT0 | BIT1;
PJSEL1 &= ~(BIT0 | BIT1);

/* Starting LFXT in non-bypass mode without a timeout. */
CS->KEY = CS_KEY_VAL ;
CS->CTL1 &= ~(CS_CTL1_SELA_MASK | CS_CTL1_SELB | CS_CTL1_SELM_MASK);
CS->CTL1 |= CS_CTL1_SELA__LFXTCLK; // Source LFXTCLK to ACLK & BCLK
CS->CTL2 &= ~(CS_CTL2_LFXTDRIVE_MASK); // Configure to lowest drive-strength
CS->CTL2 |= CS_CTL2_LFXT_EN;
while (CS->IFG & CS_IFG_LFXTIFG)
CS->CLRIFG |= CS_IFG_LFXTIFG;
CS->KEY = 0;
/* Turn off PSS high-side supervisors */
PSS->KEY = PSS_KEY_KEY_VAL;
PSS->CTL0 |= PSS_CTL0_SVSMHOFF;
PSS->KEY = 0;

/* Enable PCM rude mode, which allows to device to enter LPM3 without waiting for peripherals */
PCM->CTL1 = PCM_CTL0_KEY_VAL | PCM_CTL1_FORCE_LPM_ENTRY;

/* Enable all SRAM bank retentions prior to going to LPM3 */
SYSCTL->SRAM_BANKRET |= SYSCTL_SRAM_BANKRET_BNK7_RET;
__enable_interrupt();
SCB->SCR |= SCB_SCR_SLEEPONEXIT_Msk; // Do not wake up on exit from ISR


/* Setting the sleep deep bit */
SCB->SCR |= (SCB_SCR_SLEEPDEEP_Msk);
/* Go to LPM3 */
__sleep();
}

/*
* ======== main ========
*/
int main(void)
{
Task_Params taskParams;

/* Call board init functions */
Board_initGeneral();
Board_initGPIO();
// Board_initI2C();
// Board_initSDSPI();
// Board_initSPI();
// Board_initUART();
// Board_initWatchdog();
// Board_initWiFi();



/* Construct heartBeat Task thread */
Task_Params_init(&taskParams);
taskParams.arg0 = 5000;
taskParams.stackSize = TASKSTACKSIZE;
taskParams.stack = &task0Stack;
Task_construct(&task0Struct, (Task_FuncPtr)heartBeatFxn, &taskParams, NULL);

/* Turn on user LED */
GPIO_write(Board_LED0, Board_LED_ON);

/* Start BIOS */
BIOS_start();

return (0);
}
/* Port1 ISR */
void PORT1_IRQHandler(void)
{
volatile uint32_t i, status;
/* Toggling the output on the LED */
if(P1IFG & BIT1)
P1OUT ^= BIT0;

/* Delay for switch debounce */
for(i = 0; i < 10000; i++)

P1IFG &= ~BIT1;

}
代码是结合了empty project与论坛下载的官方低功耗例程。
应用就是在学习怎样在一个task里进入LPM3，并且要做到可以随时唤醒。

你少如的这个例子是没有实现低功耗的，你要进入几种低功耗模式再测就不一样了。

谢谢