Feature Request: led_indicator - strip multiple leds (AEGHB-1251)

[mars3142]

I have a board with 3 W2812 leds on one GPIO. I created an easy helper to show on every led another state, even different interval was possible. Then I found your led_indicator and wanted to transition to it, because it's an official library. After some tests I found, that I can't combine different states.

static const blink_step_t rgb_blink_yellow[] = {
    {LED_BLINK_RGB, SET_IRGB(0, MAX_VALUE, MAX_VALUE, 0), 200},
    {LED_BLINK_RGB, SET_IRGB(0, 0, 0, 0), 200},
    {LED_BLINK_LOOP, 0, 0},
};

static const blink_step_t rgb_solid_green[] = {
    {LED_BLINK_RGB, SET_IRGB(1, 0, MAX_VALUE, 0), 200},
    {LED_BLINK_LOOP, 0, 0},
};

I'm not able to call led_indicator_start() for both of them and show a yellow and green led. The last call will be ignored and if I use led_indicator_preempt_start() the first one will be deleted.

How can I combine both states? Is it even possible?

[YanKE01]

Since it is currently in a loop state, if rgb_blink_yellow is started, this state will loop continuously, and rgb_solid_green won't run unless you use led_indicator_preempt_start. For loop scenarios, I think it's necessary to stop the current state at an appropriate time before executing a new state.

[mars3142]

But how could I create a state with different LED colors? You have 3 LEDs and the should be blink at an individual interval. Even if I create one state, I wouldn't know how to do it, because within the states is a sequential list of events. And I'm not able to do a 200ms blink green on LED 0 and 1000ms blink red on LED 1. This is not possible, because of the blink_step_r structure.

[YanKE01]

I understand your intention. For a serial device like the 2812, when combined with a loop state, it's difficult to achieve independent control of individual LEDs.