esp-rainmaker/examples/led_light

LED Light Example

Build and Flash firmware

Follow the ESP RainMaker Documentation Get Started section to build and flash this firmware. Just note the path of this example.

What to expect in this example?

• This example uses the BOOT button and RGB LED on the ESP32-S2-Saola-1/ESP32-C3-DevKitC board to demonstrate a lightbulb.
• The LED acts as a lightbulb with hue, saturation and brightness.
• Pressing the BOOT button will toggle the power state of the lightbulb. This will also reflect on the phone app.
• Toggling the button on the phone app should toggle the LED on your board, and also print messages like these on the ESP32-S2 monitor:

I (16073) app_main: Received value = true for Lightbulb - power

• You may also try changing the hue, saturation and brightness from the phone app.

LED not working?

The ESP32-S2-Saola-1 board has the RGB LED connected to GPIO 18. However, a few earlier boards may have it on GPIO 17. Please use CONFIG_WS2812_LED_GPIO to set the appropriate value.

Reset to Factory

Press and hold the BOOT button for more than 3 seconds to reset the board to factory defaults. You will have to provision the board again to use it.