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Blink LED

Blinking of On-Board LED​

Click here to know how to do the initial setup for Arduino IDE.

pcbcupid_glyph_led_blinking

The "Hello World!" program of hardware world, the Blink Sketch! You can upload this sketch and it's a great way to make sure your board is working and you're uploading your sketch to the right glyph board and right configuration (after the Bare minimum sketch).

You can either open the inbuilt example from arduino IDE by clicking through File > Examples > 01.Basics > Blink and modify based on your GLYPH Board.

These are the inbuilt LED pin based on the type of GLYPH board you have :

  • GLYPH C3 On board LED is on GPIO1(A1)
  • GLYPH H2 On board LED is on GPIO0(D0)
  • GLYPH C6 On board LED is on GPIO14(D14)

If not you can copy the below code and comment/uncomment the led initialization.


//Use this line if you are using GLYPH C3
int led = 1;

//uncomment this line for GLYPH H2
// int led = 0; 

//uncomment this line for GLYPH C6
//int led = 14;

void setup() 
{
  pinMode(led, OUTPUT);     // set LED to be an output pin
}
  void loop() 
{
  digitalWrite(led, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(1000);                // wait for a one second
  digitalWrite(led, LOW);    // turn the LED off by making the voltage LOW
  delay(1000);                // wait for a one second
}

Next begin by plugging in your board to your computer, and wait a moment for it to be recognized by the OS. It will create a COM/serial port that you can now select from the Tools > Port menu dropdown and upload the sketch.

The LED should start blinking!

pcbcupid_glyph_led_blinking

Blinking of External LED​

A similar process can be followed to blink an external LED, but do remember to change the led LED number in the code to the pin number where an external led is connected. Below you can see an example code which should help



int led = A2;               // LED is connected to A2 pin 

void setup() 
{
  pinMode(led, OUTPUT);     // set LED to be an output pin
}
  void loop() 
{
  digitalWrite(led, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(1000);                // wait for a one second
  digitalWrite(led, LOW);    // turn the LED off by making the voltage LOW
  delay(1000);                // wait for a one second
}

Next begin by plugging in your board to your computer, and wait a moment for it to be recognized by the OS. It will create a COM/serial port that you can now select from the Tools > Port menu dropdown and upload the sketch.

PCBUCPID-plugin-glyph-board

Once complete, the LED on the glyph board will begin blinking once every second! Try changing up the delay() timing on the code to change the rate at which the LED blinks.

pcbcupid_glyph_led_blinking