ivan fajar
/
bmp_baru
bmp
main.cpp
- Committer:
- ivanff15
- Date:
- 2014-05-08
- Revision:
- 0:db75f53b7b2d
File content as of revision 0:db75f53b7b2d:
#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); } }