Diff: main.cpp

Revision:

0:db75f53b7b2d

diff -r 000000000000 -r db75f53b7b2d main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu May 08 13:32:00 2014 +0000
@@ -0,0 +1,54 @@
+#include "mbed.h"
+#include "BMP085.h"
+#include <stdio.h>
+
+#define Pu 76 //cmHg
+#define Po 1009.789
+
+float q=0.125,p=1.05728,r=10,k=0.10572799;
+
+float toPa(float data)
+{
+    float hasil;
+    hasil = data/100;
+    return hasil;
+}
+
+Serial pc(USBTX,USBRX);
+I2C i2c(p28,p27);
+BMP085 alt_sensor(p28,p27);
+
+float tekanan,tekanan_filter;
+float ketinggian;
+
+float average()
+{
+    float tekananx[50], rerata = 0;
+    
+    for (int i=0 ; i<50 ; i++)
+    {
+        tekananx[i]=alt_sensor.get_pressure();
+        rerata = rerata +tekananx[i];
+    }
+    rerata = rerata / 50;
+    return rerata;
+}
+
+int main()
+{
+    pc.baud(57600);
+    while(1)
+    {
+        alt_sensor.update();
+        tekanan=alt_sensor.get_pressure();
+        p=p+q;
+        k=p/(p+r);
+        tekanan_filter=tekanan_filter+k*(tekanan-tekanan_filter);
+        ketinggian = 44330*(1.0-pow(tekanan_filter/Po,0.1903));
+        p=(1-k)*p;
+        //ketinggian=alt_sensor.get_altitude_m();
+        //pc.printf("%f||%f\n",ketinggian,tekanan);
+        pc.printf("%f||%f\n",tekanan,ketinggian);
+        wait_ms(100);
+    }
+}
\ No newline at end of file