EZ430-F2013 LPM3 current

Hello Wang,

try to check if your program keeps LPM3 all the time you measure the current (not jumping out of LPM3).

What is your clock configuration ? (frequency...)

Best regards,

Gyro76

Hello Gyro,

Thank you very much for your help. The hardware is standard EZ430-F2013. My code is as below.

#include <msp430x20x3.h>

void main(void)
{
  BCSCTL1 |= DIVA_1;                        // ACLK/2
  BCSCTL3 |= LFXT1S_2;                      // ACLK = VLO
  WDTCTL = WDT_ADLY_1000;                   // Interval timer
  IE1 |= WDTIE;                             // Enable WDT interrupt
  P1DIR = 0xFF;                             // All P1.x outputs
  P1OUT = 0;                                // All P1.x reset
  P2DIR = 0xFF;                             // All P2.x outputs
  P2OUT = 0;                                // All P2.x reset

  while(1)
  {
    P1OUT ^= 0x01;                          // P1.0 LED on/off
    _BIS_SR(LPM3_bits + GIE);               // Enter LPM3
  }
}

#pragma vector=WDT_VECTOR
__interrupt void watchdog_timer (void)
{
  _BIC_SR_IRQ(LPM3_bits);                   // Clear LPM3 bits from 0(SR)
}

Best regards,

Wang