Revision 6:7fce519e4976, committed 2016-04-28

Comitter:

rizqicahyo

Date:

Thu Apr 28 14:59:21 2016 +0000

Parent:

5:256f6eac0358

Commit message:

tambah kodingan sensor arduino

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sensor_goertzel.txt	Thu Apr 28 14:59:21 2016 +0000
@@ -0,0 +1,104 @@
+/* last edited : 15/02/2016 
+ * commit : optimized algorithm, default goertzel formula from library
+ */
+
+#include <Goertzel.h>
+#include <EEPROMex.h>
+#include <Statistic.h>
+ 
+// ===================== DEKLARASI VARIABEL =============================
+
+// goertzel constanta
+const float TARGET_FREQUENCY = 445;
+const float SAMPLING_FREQUENCY = 8900;
+const int N = 20;
+Goertzel goertzel = Goertzel(TARGET_FREQUENCY, N, SAMPLING_FREQUENCY);
+
+//EEPROM addres
+int addr=0;
+
+//Sensor Pins
+int pwm = 3;
+int sensor[6] = {A0,A5,A4,A1,A3,A2};
+
+// output pins
+//int output[6] = {0,1,2,3,4,5,13,6,12,7,11,8,10};
+int calibrateButton = 2;
+
+//sensor data
+float THRESHOLD[6];
+float magnitude[6];
+char data;
+
+Statistic stat;
+
+//=========================================
+//=========================== MAIN PROGRAM ==================================
+
+void setup() {    
+    Serial.begin(115200);
+
+    EEPROM.setMaxAllowedWrites(500);
+    
+    pinMode(pwm, OUTPUT);
+    pinMode(calibrateButton, INPUT_PULLUP);
+
+}
+ 
+void loop() {    
+   // sensor_running();
+    //Serial.write(data);
+    //read saved THRESHOLD data
+    EEPROM.readBlock(addr, THRESHOLD,6);
+  
+    // PWM
+    tone(pwm, TARGET_FREQUENCY); 
+    data = 0;
+    
+    //Sensor logic
+    for(int i=0; i<6; i++)
+    {
+      goertzel.sample(sensor[i]); //Will take n samples
+      magnitude[i] = goertzel.detect();  //check them for target_freq
+  
+      if(magnitude[i] > THRESHOLD[i])
+      {
+        data |= 1 << i;
+        //Serial.print("1");
+        //digitalWrite(output[i],HIGH);
+      }
+      else
+      {
+        data |= 0 << i;
+         //Serial.print("0");
+         //digitalWrite(output[i],LOW);
+      }
+  
+      //Serial.print(THRESHOLD[i]);
+      //Serial.print(magnitude[i]);
+      //Serial.print("\t");
+
+      
+    }
+
+    //Serial.println();
+    /* ============= KALIBRASI ============== */ 
+
+    if(digitalRead(calibrateButton)== LOW)
+    {
+       //Serial.write(0xFF);
+       for(int i=0; i<6; i++)
+       {
+          stat.clear();
+          for (int n=0; n<50; n++)
+          {
+            stat.add(magnitude[i]);
+          }
+          THRESHOLD[i] = stat.minimum() - 20;
+       }
+       EEPROM.updateBlock(addr,THRESHOLD,6);
+    }
+    else{
+      Serial.write(data);
+    }
+}  
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