error=i2c1.write(D6F_ADDR,d6f_init,2);
return(error);
}

//差圧読み込み関数//
float read_pressure(void) {
char error;
char rdata[2];
uint16_t raw_diff_pa;
float diff_pa;
error=i2c1.write(D6F_ADDR,d6f_config,5);
wait_us(33000);
error=i2c1.write(D6F_ADDR,d6f_comp_read,4);
error=i2c1.write(D6F_ADDR,d6f_mem_read,1,true);
error=i2c1.read(0xD9,rdata,2);
if (error){
return(error);
}
raw_diff_pa=(rdata[0]<<8)+rdata[1];
diff_pa=((float)raw_diff_pa-1024)/60-500;
return(diff_pa);
}
//温度読み取り関数//
float read_d6f_temp(void) {
char error;
char rdata[2];
uint16_t raw_ref_temp;
float ref_temp;

i2c1.write(D6F_ADDR,d6f_config,5);
wait_us(33000);
error=i2c1.write(D6F_ADDR,d6f_temp_read,4);
error=i2c1.write(D6F_ADDR,d6f_mem_read,1,true);
error=i2c1.read(0xD9,rdata,2);
if(error){
return(error);
}
raw_ref_temp=(rdata[0]<<8)+rdata[1];
ref_temp=((float)raw_ref_temp-10214)/37.39;
return(ref_temp);
}

//cout関数
void flip1(void)//TIMER WIND
{
led1=!led1;
pinout=!pinout;
t1_period = t1.read_us(); // Get time since last interrupt
//pc.printf(“t1_read_us=%5.1f\n”,t1_period);
t1_freq = (1/t1_period)*1000000; // Convert period (in us) to frequency (Hz)
t1.reset(); // Reset timer and wait for next interrupt
}
//——————————-
void flip2(void)//TIMER WHEEL
{
led2=!led2;
t2_period = t2.read_us(); // Get time since last interrupt
t2_freq = (1/t2_period)*1000000; // Convert period (in us) to frequency (Hz)
t2.reset(); // Reset timer and wait for next interrupt
}
//関数定義終わり—————————//

//————————-main—————————
// データ読みこみ毎にＬＥＤが点滅する

int main() {
float prs;
int i=0;
prs=0;

mkdir(“/sd/mydir”, 0777);
in1.mode(PullDown); // Set the pin to Pull Down mode.
in1.rise(&flip1); // Set up the interrupt for rising edge
in2.mode(PullDown); // Set the pin to Pull Down mode.
in2.rise(&flip2); // Set up the interrupt for rising edge
t1.start(); // start the timer1
t2.start(); //start the timer 2
FILE *fp = fopen(“/sd/mydir/sdtest.csv”, “w”);
fprintf(fp,”Wind speed ,Pressure,temp,Wheelspeed,wtime%d\n”,wtime);
fclose(fp);

while(1){
wait_ms(wtime);

//Wind_speed=t1_freq*0.0577;
//if(t2_freq<0.31 or t2_freq>20) t2_freq=0;
//

Wheel_speed=t2_freq*0.11644;//2.096/18;

d6fph_strt();
prs=read_pressure();//差圧データ読んで代入////
tmpr=read_d6f_temp();//温度データ読んで代入//
mitudo=353/(273+tmpr);
pitos=Cof*sqrt(2*prs/mitudo);
lcd.locate(0,0);
lcd.printf(“Pito:Bike:<%2.1f>\r\n”,Wheel_speed-pitos);
lcd.locate(0,1);
lcd.printf(“%2.1f,%2.1f\r\n”,pitos,Wheel_speed);
//lcd.printf(“\r\n”);
pc.printf(“Pitos=%3.1f,tmp=%2.1f,pa=%2.1f\r\n”,pitos,tmpr,prs);

fp=fopen(“/sd/mydir/sdtest.csv”, “a”);
fprintf(fp,”%2.1f,%2.1f,%2.1f\n”,pitos,tmpr,Wheel_speed);
fclose(fp);
i++;
}
}