File content as of revision 0:324e4a46d8ae:

/*
BMP280から気圧・温度を取得してCAN送信・シリアル送信．
気圧->5回移動平均．
<BMP280ピン設定>
CSB : HIGH
SDO : LOW
*/
#include "mbed.h"
#include "BME280.h"

BME280 bmp = BME280(PB_7, PB_6); // pin30,29 SDA,SCL
Serial pc(PA_9, PA_10, 115200); // pin19,20 TX,RX

#define N 5
float pressure_ave = 0.0f; // 気圧[hPa]
float pressure_new = 0.0f;
float buff_p[N];
float sum = 0.0f;
int cnt = 0;
float tem = 0.0f; // 温度[C]
char senddata[5];
union Float2Byte{
    float _float;
    char _byte[4];
}f2b;

int main(){
    wait(0.1);
    bmp.initialize();
    for(int i;i<N;i++){
        buff_p[i] = bmp.getPressure();
        sum += buff_p[i];
    }
    pc.printf("Start.\n\r");
    while(1){
        sum = sum - buff_p[cnt];
        pressure_new = bmp.getPressure();
        buff_p[cnt] = pressure_new;
        sum = sum + pressure_new;
        cnt++;
        if(cnt == N) cnt = 0;
        pressure_ave = sum/N;
        tem = bmp.getTemperature();
        pc.printf("Pre[hPa]: %f\n\r", pressure_ave);
        pc.printf("Tem[C] : %f\n\r", tem);
        
        wait(0.0005);
    }
}