Operation

Instead of using a state machine, the LED module operates as follows:

1. When the module receives a message on the led_chan channel, it performs the following steps:

   • Cancels any existing blink pattern.
   • Saves the new LED state, which is the colors and the timing.
   • Turns the LED on with the specified color.

2. When the message specifies a blinking pattern, which means that repetitions is not 0, the module performs the following steps:

   • Starts a timer with duration_on_msec.
   • Toggles the LED between the on and off states when the timer expires.
   • Alternates the timer between duration_on_msec and duration_off_msec.
   • Continues until the LED has blinked the specified number of repetitions.

When repetitions is -1, the blinking continues indefinitely, or until the module receives a new message.

The module handles error cases gracefully and reports issues through logging.