ESP32-C3 and ESP32-S3 will not compile with NeoEsp32I2s0800KbpsMethod

[mariusmotea]

Describe the bug According to the documentation ESP32-C3 is supported with following note:

NOTE: The ESP32S2 and ESP32C3 only support one i2s hardware bus. Thus you can only use the NeoEsp32I2s0*Method types.

But in Arduino when i set NeoEsp32I2s0800KbpsMethod i get the error "'NeoEsp32I2s0800KbpsMethod' was not declared in this scope"

To Reproduce Steps to reproduce the behavior:

1. In Arduino set the board to ESPC32C3 Dev Module
2. Install last NeoPixelBus library

Expected behavior Successfully compile the code.

Development environment (please complete the following information):

• OS: Ubuntu 21.10
• Build Environment: Arduino IDE v.1.8.15
• Board target: ESPC32C3 Dev Module
• Library version: v2.6.9

Minimal Sketch that reproduced the problem: #include <NeoPixelBus.h> NeoPixelBus<NeoGrbFeature, NeoEsp32I2s0800KbpsMethod>* strip = NULL; ...... strip = new NeoPixelBus<NeoGrbFeature, NeoEsp32I2s0800KbpsMethod>(newCount, 13); // and recreate with new count strip->Begin(); .....

Additional context Compile error:

ESP32_C3_WS281X:56:28: error: 'NeoEsp32I2s0800KbpsMethod' was not declared in this scope NeoPixelBus<NeoGrbFeature, NeoEsp32I2s0800KbpsMethod>* strip = NULL; ^~~~~~~~~~~~~~~~~~~~~~~~~ /home/marius/Documents/ESP32_C3_WS281X/ESP32_C3_WS281X.ino:56:28: note: suggested alternative: 'NeoEsp32Rmt0800KbpsMethod' NeoPixelBus<NeoGrbFeature, NeoEsp32I2s0800KbpsMethod>* strip = NULL; ^~~~~~~~~~~~~~~~~~~~~~~~~

"NeoEsp32Rmt0800KbpsMethod" is working but i got a flickering and i think this method is not the best.

Thanks.

[Makuna]

They changed the i2s interface/API enough on the C3 that it's not easy to support it with the same code. This is noted at the top of the NeoEsp32i2sMethods.h file.

[Makuna]

@mariusmotea Jump into the discussions area to continue the conversation about RMT and flickering; specifically mention exactly what LEDs you are using.

[mariusmotea]

Hi,

I'm not able to find in Discussions a topic related to RMT and flickering. I can simply tell that i use a WS2812B strip that i use it with no issues on esp8266 with Neo800KbpsMethod. Also i want to mention that now i'm using a prototype board designed by me as i want to replace all esp8266 in my home with some small boards with ESP32C3 that have also a mostfet which cut the power to the strip when all leds are soft off. Maybe my board don't work properly?

[Makuna]

This is the wrong area to "discuss" the RMT flicker, this is for reporting bugs not seeking help. Ask the questions in the discussions area about RMT and I will answer there. (https://github.com/Makuna/NeoPixelBus/discussions). The original topic (ESP32C3 and I2s methods) is a valid issue that it is not supported.

[Makuna]

ESP32S3 also has a significant interface change for i2s and currently is not supported. Unknown if it follows the C3 or creates yet another interface.

[Makuna]

Note S3 and C3 are supported by BitBang in the DelayBetweenPixels branch

[Makuna]

https://github.com/adafruit/Adafruit_NeoPXL8 Includes DMA support for S3 (C3?) using the LED parallel peripheral.