Page 198 - Programming the Photon Getting Started With the Internet of Things
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if (n == 1) {
digitalWrite(Ledyellow, HIGH);
}
else
This is used in conjunction with the if statement. The block of code within the else
statement will execute when the if statement returns a false condition or when the if
condition is not met.
Syntax
if (condition) {
//execute if condition is true
}
else {
//execute if condition is false
}
Example
int switchstate = digitalRead(D0)
if (switchstate == HIGH) {
digitalWrite(ledpin, HIGH)
}
else {
digitalWrite(ledpin, LOW)
}
This example is designed to detect if a switch has been pressed. If the switch has been
pressed and equals HIGH, then the LED turns on. If the switch is equal to LOW, then the
LED will stay off.
int
An integer is a data type that creates a bit of memory to store a single value.
Example
int led = D0;
This stores the pin number into a memory slot called led. When you want to reference the
