current consumption problem with MSP430F4250 device

Hi...Thanks for your  reply...but still I am not getting any fine decrement in current consumption values.

I checked with the status of all peripherals I have used..but still unable to found that  which is drawing high current.

Here, I am giving  you my software code which may require some changes to be done.

I want to tell you that I have given external ref. voltage to SD16 ADC module through Vref. pin & routines "datainit(), delay() & convert_number()"

are used for LCD display instead of using LCD module.

void main()
{
    volatile unsigned int i;
    WDTCTL=WDTPW+WDTHOLD;  //stop watchdog timer
    FLL_CTL0 |= XCAP18PF;         // Set load capacitance for xtal
    FLL_CTL1 |= FLL_DIV_8;      // using ACLK
    for (i=0; i<10000; i++)      // Delay to stablize crystal
    {   }
    P1DIR=0xFF;            //set port1 as output direction
    P1OUT=0x00;
    P2DIR=0xFF;            //set port1 as output direction
    P2OUT=0x00;
    P6SEL=P6SEL+0x03;  // ADC i/p channel0
   
    BTCTL=BT_ADLY_1000;   // basic timer interrupt delay
    IE2 |= BTIE;                       // Enable BT interrupt
    P5DIR = 0xFF;           // All P5.x outputs
    P5SEL = 0x00;             // All P5.x reset
   // P6DIR = 0xFF;          // All P6.x outputs
   // P6SEL = 0x00;            // All P6.x reset
    cnt=0;

FCTL2 = FWKEY + FSSEL0 + FN1;     // MCLK/3 for Flash Timing Generator
  value = 0;                       // initialize value   
  SD16CTL = SD16LP+SD16SSEL0+SD16XDIV_3+SD16DIV_3;   // 1.2V ref, SMCLK/8
  SD16CCTL0 |= SD16DF+SD16OSR_512+SD16SNGL;         // single conversion with OSR=512
  SD16INCTL0 = SD16INCH_0+SD16GAIN_8+SD16INTDLY_0;      // set PGA gain to 8 & select A0 input
  for (i = 0; i < 0x3600; i++);             // Delay for 1.2V ref startup
   
results=0;
while (1)
  {
      _bis_SR_register(LPM3_bits+GIE);       // enter in LPM
     SD16CTL = SD16LP+SD16SSEL0+SD16XDIV_3+SD16DIV_3; 
       SD16CCTL0 |= SD16SC;                    // Set bit to start conversion
    while ((SD16CCTL0 & SD16IFG)==0);       // Poll interrupt flag for CH0
  _bis_SR_register(LPM3_bits+GIE);       // enter in LPM
    results = SD16MEM0;                     // Save CH2 results (clears IFG)
 
    _no_operation();                     // set break point here
    mv=results;
    mv=(mv*75)/32767;                 // to display o/p in mV
   mv=mv*100;

   results=mv;
     data_init();

      delay(30000);
     convert_number(results);    
  }
   write_SegC(value);
   copy();          
}

#pragma vector=BASICTIMER_VECTOR
__interrupt void basic_timerISR(void)
 {
     _bic_SR_register_on_exit(LPM3_bits);    // Clear LPM0 bits from 0(SR)
 }             

void write_SegC(char value)
{
  char *Flash_ptr;                          // Flash pointer

  Flash_ptr = (char *)0x1040;               // Initialize Flash pointer
  FCTL3 = FWKEY;                            // Clear Lock bit
  FCTL1 = FWKEY + ERASE;                    // Set Erase bit
  *Flash_ptr = 0;                           // Dummy write to erase Flash seg

  FCTL1 = FWKEY + WRT;                      // Set WRT bit for write operation

    *Flash_ptr = value;                   // Write value to flash

  FCTL1 = FWKEY;                            // Clear WRT bit
  FCTL3 = FWKEY + LOCK;                     // Set LOCK bit
}

void copy(void)
{
  char *Flash_ptrC;                         // Segment C pointer
 FCTL2 = FWKEY + FSSEL0 + FN1;       // MCLK/3 for Flash Timing Generator (mem write + flash clock select)

  Flash_ptrC = (char *)0x1040;              // Initialize Flash segment C ptr
 
  value1 = *Flash_ptrC;          // copy value segment C to seg D
 

}

So please help me for this.

Waiting for reply.

Hi!

I had some LPM3, LPM4 power consumption problems with a MSP430F5510.

That's my thread where I got the help to solve the issue:

http://e2e.ti.com/support/microcontrollers/msp43016-bit_ultra-low_power_mcus/f/166/p/109033/387437.aspx#387437

i suggest you to read the thread, probably it's something similar.

Regards,

Carloalberto

Hi Carloalberto,

Thanks..for your help but I am not satisfied with the thread.

So still waiting for the reply

If I can give you a suggest I would try a simpler code where everything it's off. If there is also some hardware components that can draw current, disconnect them. Then you can put the mcu in low power and you have to get the power consumption in the datasheet. If you don't, do not move on ADC and other stuff.