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motion detection using p?r(D203B) using launcpad

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my project is motion detection using p?r sensor(D203B etc.) with msp430launcpad.but ? dont have any knowledge this subject.? would like you to help my project.for example how to connect launcpad and p?r sensor,its code.? am waiting your answers.thanks

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Check the datasheet for the sensor, read the examples and workshops for the launchpad. We won't write it for you, but we'll help you figure out what you're doing wrong in your own code.

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Maybe. It's in the ballpark.


You can always adjust the resistors and capacitors after you get the circuit mostly working.


Give it a try and tell us how it works out.

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? have this code


#define   LED_OUT         BIT0              // Bit location for LED
#define   SENSOR_PWR      BIT7              // Bit location for power to sensor
#define   THRESHOLD       50                // Threshold for motion

static unsigned int result_old = 0;         // Storage for last conversion
char LED_ENABLE = 1;                        // LED control

void main(void)
 BCSCTL1 = CALBC1_1MHZ;                    // Set DCO to 1MHz
 BCSCTL1 |= DIVA_2;                        // ACLK = VLO/4

 P1OUT = 0x10;                             // P1OUTs
 P1SEL = 0x08;                             // Select VREF function
 P1DIR = 0xEF;                             // Unused pins as outputs
 P1REN |= 0x10;                            // P1.4 pullup
 P1IE |= 0x10;                             // P1.4 interrupt enabled
 P1IES |= 0x10;                            // P1.4 Hi/lo edge
 P1IFG &= ~0x10;                           // P1.4 IFG cleared
 P2OUT = 0x00 + SENSOR_PWR;                // P2OUTs
 P2SEL &= ~SENSOR_PWR;                     // P2.7 = GPIO
 P2DIR = 0xff;                             // Unused pins as outputs

 SD16CTL = SD16VMIDON + SD16REFON + SD16SSEL_1;// 1.2V ref, SMCLK
 SD16INCTL0 = SD16GAIN_4 + SD16INCH_4;     // PGA = 4x, Diff inputs A4- & A4+
 SD16CCTL0 =  SD16SNGL + SD16IE;           // Single conversion, 256OSR, Int enable
 SD16CTL &= ~SD16VMIDON;                   // VMID off: used to settle ref cap
 SD16AE = SD16AE1 + SD16AE2;               // P1.1 & P1.2: A4+/- SD16_A inputs

 // Wait for PIR sensor to settle: 1st WDT+ interval
 P1SEL |= LED_OUT;                         // Turn LED on with ACLK (for low Icc)
 while(!(IFG1 & WDTIFG));                  // ~5.4s delay: PIR sensor settling
 P1SEL &= ~LED_OUT;                        // Turn LED off with ACLK (for low Icc)

 // Reconfig WDT+ for normal operation: interval of ~341msec
 BCSCTL1 |= DIVA_3;                        // ACLK = VLO/8
 IE1 |= WDTIE;                             // Enable WDT interrupt

 _BIS_SR(LPM3_bits + GIE);                 // Enter LPM3 with interrupts

// SD16_A interrupt service routine
#pragma vector = SD16_VECTOR
__interrupt void SD16ISR(void)
{ unsigned int result_new;

 SD16CTL &= ~SD16REFON;                    // Turn off SD16_A ref
 result_new = SD16MEM0;                    // Save result (clears IFG)

 if (result_new > result_old)              // Get difference between samples
   result_old = result_new - result_old;
   result_old = result_old - result_new;

 if (result_old > THRESHOLD)               // If motion detected...
    if (LED_ENABLE & 0x01)
       P1OUT |= LED_OUT;                   // Turn LED on

 result_old = SD16MEM0;                    // Save last conversion

 __bis_SR_register_on_exit(SCG1+SCG0);     // Return to LPM3 after reti

// Watchdog Timer interrupt service routine
#pragma vector=WDT_VECTOR
__interrupt void watchdog_timer(void)
 if (!(P1OUT & LED_OUT))                   // Has motion already been detected?
   SD16CTL |= SD16REFON;                   // If no, turn on SD16_A ref
   SD16CCTL0 |= SD16SC;                    // Set bit to start new conversion
   __bic_SR_register_on_exit(SCG1+SCG0);   // Keep DCO & SMCLK on after reti
   P1OUT &= ~LED_OUT;                      // If yes, turn off LED, measure on next loop

// Port 1 interrupt service routine
#pragma vector=PORT1_VECTOR
__interrupt void Port_1(void)
 LED_ENABLE ^= 0x01;                      // Toggle LED enable for current measurement
 P1IFG &= ~0x10;                          // P1.4 IFG cleared

but ? dont convert this code for using launchpad.this code convert analog sinyal to 16bit but launcpad has 10bit ADC so ? dont know enough knowledge adc conversion.? am trying to convert this code using to launchpad, also ? would be glad if you help me.

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? connect tp1(5v) resistor then serial to Drain(d203s) and a condansator Drain(d203s) to gnd;;after a resistor Source(d203s) to gnd,Source(d203s) to P1.7(for to adc);;Ground(d203s) to gnd;;finally board gnd to msp gnd;;but my motion sensor detect very closely,how ? can improve distance to detection???please help me!!!! my code

#include                      // Header file for this device
#include                      // Intrinsic functions

void main (void)
      WDTCTL = WDTPW | WDTHOLD;                   

      P1DIR =0x01;
      int c,b,a=15;
      ADC10CTL0 = SREF_0 | ADC10SHT_2 | ADC10ON;
      ADC10CTL1 = INCH_7 | SHS_0 | ADC10DIV_0 | ADC10SSEL_0 | CONSEQ_0;
      ADC10AE0 = BIT7;                             
      ADC10CTL0_bit.ENC = 1;                       

for (; {                                         
      ADC10CTL0_bit.ADC10SC = 1;                 
      while (ADC10CTL1_bit.ADC10BUSY == 1) {


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