Channel not in init state (IEC-152)

[michaelboeding]

Answers checklist.

• I have read the component documentation ESP-IDF Components and the issue is not addressed there.
• I am using target and esp-idf version as defined in component's idf_component.yml
• I have searched the issue tracker for a similar issue and not found any related issue.

Which component are you using? If you choose Other, provide details in More Information.

led_strip

ESP-IDF version.

5.2

Development Kit.

Custom Board

Used Component version.

2.5.4

More Information.

I'm randomly getting the below errors while using the library. They are not consistent and happen at different times during operation.

E (2460) rmt: rmt_tx_enable(717): channel not in init state
E (2460) led_strip_rmt: led_strip_rmt_refresh(72): enable RMT channel failed

[suda-morris]

@michaelboeding Can you check if you're calling led_strip_refresh or led_strip_clear in different threads without serializing the access to the same led_strip handle?

[michaelboeding]

@michaelboeding Can you check if you're calling led_strip_refresh or led_strip_clear in different threads without serializing the access to the same led_strip handle?

I'm definitely calling these in separate tasks. Do I need to add a mutex to serialize access? I can do that tonight if so.

[suda-morris]

yes, a mutex is needed.

[michaelboeding]

I got this implemented and it seems to be working. Thanks for the quick response! I'm going to go ahead and close this. If I see it again ill reopen

[michaelboeding]

Well maybe I spoke too soon. I'm still seeing this even with mutexs in place on the refresh and clear methods.

W (144550) LED_OBJECT: RMT channel not in init state. Skipping refresh...
E (144590) rmt: rmt_tx_enable(717): channel not in init state
E (144590) led_strip_rmt: led_strip_rmt_refresh(72): enable RMT channel failed
W (144590) LED_OBJECT: RMT channel not in init state. Skipping refresh...
E (144630) rmt: rmt_tx_enable(717): channel not in init state
E (144630) led_strip_rmt: led_strip_rmt_refresh(72): enable RMT channel failed
W (144630) LED_OBJECT: RMT channel not in init state. Skipping refresh...
E (144660) rmt: rmt_tx_enable(717): channel not in init state
E (144660) led_strip_rmt: led_strip_rmt_refresh(72): enable RMT channel failed
W (144660) LED_OBJECT: RMT channel not in init state. Skipping refresh...
E (144690) rmt: rmt_tx_enable(717): channel not in init state
E (144690) led_strip_rmt: led_strip_rmt_refresh(72): enable RMT channel failed
W (144690) LED_OBJECT: RMT channel not in init state. Skipping refresh...
E (144720) rmt: rmt_tx_enable(717): channel not in init state
E (144720) led_strip_rmt: led_strip_rmt_refresh(72): enable RMT channel failed

[michaelboeding]

And just as a reference heres my code to create a breath effect. Not sure but maybe this has something to do with it ?

void LED::breath(uint16_t hue, uint8_t saturation) {
    const uint8_t maxValue = 255; // Maximum brightness level
    const uint8_t minValue = 0; // Minimum brightness level
    const int period = 2000; // Breathing period in milliseconds (2 seconds)
    const TickType_t stepDelay = pdMS_TO_TICKS(20); // Delay for each step
    const int steps = period / 20; // Number of steps in one breathing cycle

    for (int i = 0; i < steps; i++) {
        // Check if the mode has changed during the breathing cycle
        if (this->currentMode != LEDMode::CHARGING && this->currentMode != LEDMode::CHARGED && this->currentMode != LEDMode::UNPROVISIONED) {
            // Exit the breathing effect if the mode has changed
            //if we have the mutex then we can unlock it
            return;
        }
        // Calculate the sine wave value for smooth breathing effect
        float sineValue = (std::sin(2.0f * M_PI * i / steps) + 1.0f) / 2.0f;
        uint8_t value = minValue + static_cast<uint8_t>(sineValue * (maxValue - minValue));

        // Set the LED color with the calculated brightness (value)
        this->setPixelColorHSV(hue, saturation, value);

        // Delay for the next step
        vTaskDelay(stepDelay);
    }
}