Chip support: ESP32-C2

[lybgo]

Related area

Board support

Hardware specification

ESP32-C2

Is your feature request related to a problem?

When will ESP32-C2 be supported

Describe the solution you'd like

When will ESP32-C2 be supported

Describe alternatives you've considered

No response

Additional context

No response

I have checked existing list of Feature requests and the Contribution Guide

• I confirm I have checked existing list of Feature requests and Contribution Guide.

[lbernstone]

Roadmap is at Arduino ESP32 Core Project Roadmap (view). As you can see, C2 is not even on the map. It must be well supported by IDF before it will appear here.

[VojtechBartoska]

Hello @lybgo, we wanted to open new ticket but I will use yours for tracking this support. Adding it on the Roadmap.

The support itself is under discussion. We need to evaluate if it make sense to support ESP32-C2 for Arduino ESP32 Core.

The resolution will be shared in this ticket.

[VojtechBartoska]

Hello folks,

we discussed internally support of ESP32-C2 and we are sharing current state.

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Please be aware that this resolution can change in the future depending on other factors and requests as amount of maker-oriented devboards made with ESP32-C2 in the future for example. Also any community effort is welcomed

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At this moment we are not going to add support for ESP32-C2, this SoC will be mainly used in large volume commercial applications due to cost-reduction and for that can be used ESP-IDF.

In Arduino ESP32 Core from our perspective, ESP32-C3 has a lot more RAM and more peripherals and the price is just a bit higher so it make more sense to use and support ESP-C3 than ESP32-C2.

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We will instead focus on adding first ESP32-H2 support, which is bringing new applications. ESP32-H2 support is tracked in this issue.

[ITstreet1]

Any news regarding ESP32C2 (ESP8684) as there are dev kits based on it:
https://docs.espressif.com/projects/espressif-esp-dev-kits/en/latest/esp8684/esp8684-devkitm-1/index.html

[me-no-dev]

@ITstreet1 as @VojtechBartoska explained, we do not currently plan to add support for C2 in Arduino. It is possible that we add support so that you can use Arduino as IDF component or build your own libraries for it to use with Arduino IDE.

[ITstreet1]

Yeah, I read that. But thought you might change your plans. Hope you will add the support as there are dev kits. The MCU is so small and can be easily fitted into many devices.

I will stay tuned, anyway.

Regards.

[rkarlsba]

I just got my hands on some ESP32-C2s and I would very much like this support. AFAICS, it should be mostly the same as the ESP32-C3

[Jason2866]

@lybgo @rkarlsba @ITstreet1 @lbernstone @me-no-dev
Added C2 support to the current branch esp-idf-v5.1-libs. It is here https://github.com/tasmota/arduino-esp32/tree/esp-idf-v5.1-c2
The corresponding libs are here https://github.com/tasmota/esp32-arduino-libs

Built with forked Arduino Lib Builder (branch) https://github.com/Jason2866/esp32-arduino-lib-builder/tree/v5.1_c2_try

Did NOT test with ArduinoIDE since i dont use. Tests done with Platformio. The full Platformio Arduino framework is here https://github.com/Jason2866/esp32-arduino-lib-builder/releases/download/1440/framework-arduinoespressif32-release_v5.1-3d4f85e3f4.zip

Can be used with this Platformio setup:

[env:esp32-c2-devkitm-1]
platform = https://github.com/Jason2866/platform-espressif32.git#Arduino/IDF5
framework = arduino
board = esp32-c2-devkitm-1
monitor_speed = 115200

Tested wifi, serial and simple LED blink. All worked. Some stuff will not work since the C2 does NOT support RMT!!

Screenshot from example sketch WifiScan.ino (serial port)

Thx @VojtechBartoska for providing the esp8684 devkit