Led Controller

The LED module provides an interface to control the five on-board LEDs. Namely CELL, CON, DATA, ERROR and USER.

To use the LED Controller, it must be initialized with either normal mode or manual mode.

• Normal Mode: All LEDs except for the USER LED can be controlled by the system to reflect its state. For instance, the CELL LED turns on when connected to the network.
  • Initialied with LedCtrl.begin()
• Manual Mode: No LEDs are controlled by the system, and must be manually set by the user.
  • Initialized with LedCtrl.beginManual()

Example​

#include <led_ctrl.h>

void setup() {
    // Initialize the Led Controller in normal mode
    LedCtrl.begin();

    // Perform a startup "animation" with the LEDs
    LedCtrl.startupCycle();

    // Turn on the User LED
    LedCtrl.on(Led::USER);

    delay(1000);

    // Turn off the User LED
    LedCtrl.off(Led::USER);

    // Toggle the Error LED
    LedCtrl.toggle(Led::ERROR);
}

Controlling the LEDs​

Leds can be controlled through four calls

• LedCtrl.on(LED)
• LedCtrl.off(LED)
• LedCtrl.toggle(LED)
• LedCtrl.startupCycle()

The LED argument can be Led::CELL, Led::CON, Led::DATA, Led::ERROR and Led::USER.

Example (Interactive)​

This example initializes the led controller and runs a "LED animation". The USER led is turned on. The ERROR and CELL LED blink every second.

Use the interactive code editor to compile a hex file that you can program onto your board.

Live Editor​