User manual

www.sainsmart.com
Copyright © 2013 SainSmart All Rights Reserved
{
digitalWrite(buzzer,HIGH);//sound
delay(1);//delay 1ms
digitalWrite(buzzer,LOW);//mute
delay(1);//delay 1ms
}
for(i=0;i<100;i++)// Output the other frequency of sound
{
digitalWrite(buzzer,HIGH);//sound
delay(2);//delay 2ms
digitalWrite(buzzer,LOW);//mute
delay(2);//delay 2ms
}
}
}
while loops
Description
while loops will loop continuously, and infinitely, until the expression inside the parenthesis, ()
becomes false. Something must change the tested variable, or the while loop will never exit. This
could be in your code, such as an incremented variable, or an external condition, such as testing a
sensor.
Syntax
while(expression){
// statement(s)
}
Parameters
expression - a (boolean) C statement that evaluates to true or false
Example
var = 0;
while(var < 200){
// do something repetitive 200 times
var++;
}