用ADXL335加速度计测量步数的代码

使用ADXL335加速度计来测量步数的代码可以使用Arduino，示例代码如下：int ledPin = 13; // LED connected to digital pin 13
int steps = 0; // number of steps taken
int xVal, yVal, zVal; // x, y, and z axis values
int threshold = 250; // minimum acceleration changevoid setup()
{
pinMode(ledPin, OUTPUT); // sets the digital pin as output
Serial.begin(9600); // opens serial port, sets data rate to 9600 bps
}void loop()
{
// read the acceleration values
xVal = analogRead(A0);
yVal = analogRead(A1);
zVal = analogRead(A2); // check to see if the values have changed
if(abs(xVal-xOld) > threshold || abs(yVal-yOld) > threshold || abs(zVal-zOld) > threshold)
{
steps++; // if the value has changed, increase the steps
digitalWrite(ledPin, HIGH); // turn LED on
delay(50);
digitalWrite(ledPin, LOW); // turn LED off
} // save previous values
xOld = xVal;
yOld = yVal;
zOld = zVal; // print the steps
Serial.print("Steps: ");
Serial.println(steps);
delay(100);
}