_SKU_SEN0192__Microwave_sensor微波传感器模块 - jimaobian/DFRobotWikiCn GitHub Wiki

/***************************************************
  Microwave sensor
 <http://www.dfrobot.com.cn/goods-1231.html>

 ***************************************************
 This example reads temperature and humidity from SHT1x Humidity and Temperature Sensor.

Created 2015-7-30
 By Loan <[email protected]>

 GNU Lesser General Public License.
 See <http://www.gnu.org/licenses/> for details.
 All above must be included in any redistribution
 ****************************************************/

/***********Notice and Trouble shooting***************
 1.Connection and Diagram can be found here
 <http://wiki.dfrobot.com.cn/index.php?title=%28SKU:SEN0192%29_Microwave_sensor%E5%BE%AE%E6%B3%A2%E4%BC%A0%E6%84%9F%E5%99%A8%E6%A8%A1%E5%9D%97>
 2.This code is tested on Arduino Uno, Leonardo, Mega boards.
 3.arduino Timer library is created by jonoxer.
 See <http://www.dfrobot.com.cn/images/upload/File/SEN0192/20160112134309yy5nus.zip arduino Timer library> for details.
 ****************************************************/
#include <MsTimer2.h>           //Timer interrupt function
int pbIn = 0;                   // Define the interrupt PIN is 0, that is, digital pins 2
int ledOut = 13;
int count=0;
volatile int state = LOW;       //Define ledOut, default is off

void setup()
{
     Serial.begin(9600);
     pinMode(ledOut, OUTPUT);
     attachInterrupt(pbIn, stateChange, FALLING); // Sets the interrupt function, falling edge triggered interrupts.
     MsTimer2::set(1000,process); // Set the timer interrupt time 1000ms
     MsTimer2::start();//Timer interrupt start

}

void loop()
{
    Serial.println(count); // Printing times of 1000ms suspension
    delay(1);
    if(state == HIGH)  //When moving objects are detected later, 2s shut down automatically after the ledout light is convenient.
  {
    delay(2000);
    state = LOW;
    digitalWrite(ledOut, state);    //Turn off led
  }

 }


void stateChange()  //Interrupt function
{
  count++;

}

void process()   //Timer handler
{
  if(count>1)  //1000ms interrupt number greater than 1 is considered detected a moving object (this value can be adjusted according to the actual situation, equivalent to adjust the detection threshold of the speed of a moving object)
       {
                   state = HIGH;
                   digitalWrite(ledOut, state);    //Lighting led
                   count=0;   //Count zero

       }
        else
            count=0;   //In 1000ms, interrupts does not reach set threshold value is considered not detect moving objects, interrupt the count number is cleared to zero.
}