File content as of revision 0:86acb35db6d7:

//Gyro test04
// Akidukidensi AE-GYRO-SMD
#include "mbed.h"
#include "TextLCD0420.h"

#define ON 1
#define OFF 0
#define Gy1_offset 0.01

DigitalOut mled0(LED1);
DigitalOut mled1(LED2);
AnalogIn gy1_adc(p16);
AnalogIn gy2_adc(p17);

TextLCD lcd(p24, p25, p26, p27, p28, p29, p30,20,4); // rs, rw, e, d0, d1, d2, d3

double round3(double x){
  double y;
  y=double(int((x+0.005)*100))/100;
  return(y);
}

int main() {
  float gy1_data;
  float gy1_center;
  float gy1_sgm=0;
  float gy1_wk0=0,gy1_wk1=0;
  float gy1_avg=0,gy1_sum;
  int i,gy1_lc=9,gy1_lc_old=0;
  
  lcd.cls();
  lcd.locate(0,0);
  lcd.printf("*** Gyro test04 ****\n");

  gy1_center=0;
  for(i=0;i<300;i++){
    gy1_center=gy1_center+round3(gy1_adc.read()*3.3);
    wait(0.001);
  }
  gy1_center=round3(gy1_center/300);
  
  while(1){
    gy1_sum=0;
    for(i=0;i<20;i++){
      gy1_sum=gy1_sum+round3(gy1_adc.read()*3.3);
      wait(0.005);
    }
    gy1_avg=round3(gy1_sum/20);
    
    gy1_wk1=round3((gy1_avg-gy1_center)*1000/5);
    if(gy1_wk1 < 0){
      gy1_wk1=gy1_wk1*1.1;
    }
    gy1_sgm=round3(gy1_sgm+(gy1_wk0+gy1_wk1)*0.1/2);
    gy1_wk0=gy1_wk1;
    
    if(gy1_sgm > 90){
      gy1_sgm=90;  
    }
    else if(gy1_sgm < -90){
      gy1_sgm=-90;
    }
    
    lcd.locate(0,1);
    lcd.printf("%3.3f %3.3f d:%3.0f",gy1_avg,gy1_center,gy1_sgm);
    lcd.locate(0,2);
    lcd.printf("--------+--------");
    gy1_lc=(gy1_sgm-5)/10+9;
    if(gy1_lc >20){
      gy1_lc=19;
    }
    if(gy1_lc <0){
      gy1_lc=0;
    }
    lcd.locate(gy1_lc_old,3);
    lcd.printf(" ");
    lcd.locate(gy1_lc,3);
    lcd.printf("*");
    gy1_lc_old=gy1_lc;
  }//while    
}//main