Metro ESP32-S2 Technical Info

[SeattleDavid]

I have purchased, but not yet received, a metro ESP32-S2.

The product page does not have any technical information. No schematics, no specifics, no pin mapping, nothing.

1) I assume the shield interface is 3v3, but does anybody know if this is correct?

2) Does anybody have the pin mappings to the processor chip?

3) Is a schematic available or will it soon be available?

4) does the Neopixel DO (output) pin have a connection so I can extend the neopixel chain?

[User_UMjT7KxnxP8YN8]

And where can we find a detailed datasheet for the processor? I found lots of descriptive product briefs but nothing I could use to program for this device.

[SeattleDavid]

How do we use it if we don't have any technical info, not even pin mapping?

Per Adafruit:

We will answer questions in a timely manner (generally within 2 business days). Adafruit has dedicated support engineers that will be able to assist you, please keep in mind we answer all questions in the technical support forums, we do not provide one-on-one product support over email.

Does the above apply except when they don't?

[Franklin97355]

There is not much information on the chip except this and that is one heck of a read. I'll ask the others if they have any sources.

[adafruit_support_carter]

There will be a guide with all the usual information soon.

1) I assume the shield interface is 3v3, but does anybody know if this is correct?

Not sure what you are asking. The logic level for the board is 3.3V.

2) Does anybody have the pin mappings to the processor chip?

See information links at the bottom of product page:
https://www.adafruit.com/product/4653
For pin mapping on the Metro, that will be available when guide/schematic/etc. are posted.

3) Is a schematic available or will it soon be available?

Yes, soon. Along with guide, etc.

4) does the Neopixel DO (output) pin have a connection so I can extend the neopixel chain?

No. The onboard NeoPixel's main purpose is status indication. For external NeoPixels, use any available GPIO pin as usual.

[adafruit2]

hihi tutorial is coming this weekend! will have all sortsa details. please note that the esp32s2 chipset support is... beta! its a 'subset' of the popular ESP32 but arduino support isn't mainline yet. it seems to work pretty well tho!

[User_UMjT7KxnxP8YN8]

A-Charlie-Brown-Christmas-That's It!.jpg (278.5 KiB) Viewed 264 times

Well, almost. This helps tremendously, but there are still version-specific details we need to use all of its features, or for that matter, to know what those features are. For instance, AES BANNED is an option that can be ordered; does this version of the chip have it?

Still, thanks for finding this. It's a great leap forward over what I was able to find.

[User_UMjT7KxnxP8YN8]

There will be a guide with all the usual information soon.

Please include in the guide a list of the optional features & peripherals incorporated in the version of the chip you're using, and a link to the technical documentation needed to use them.

[SeattleDavid]

Just knowing the pin mapping between the ESP-32 and the Shield interface pins would help.

Right now, it is just a guessing game...there is no I formation. My unit will arrive on Tuesday and I would like to use it...surely it is possible to provide at least some info.

Lots of info is available on the ESP32-S2 itself...that’s not what I am looking for. I’m mostly looking to understand the Metro (https://www.adafruit.com/product/4775) implementation, such as a schematic or pin mapping

[siddacious]

Here is the PCB repo for the Metro ESP32S2 which includes schematics for pin mapping:

https://github.com/adafruit/Adafruit-Metro-ESP32-S2-PCB

Additionally that info is codified in the pins file in the Metro ESP32S2 board definition for CircuitPython:
https://github.com/adafruit/circuitpyth ... 2s2/pins.c

[SeattleDavid]

Thank you! This is great news. I am glad that I can see the pin mapping now:

Metro - ESP32-S2 - Schematic.png (559.92 KiB) Viewed 227 times

[SeattleDavid]

PDF Format, single sheet:

Adafruit Metro ESP32-S2 Schematic.pdf

Adafruit Metro ESP32-S2 Schematic.pdf

(554.13 KiB) Downloaded 12 times

[adafruit2]

technical documenation is posted here https://learn.adafruit.com/adafruit-metro-esp32-s2
we will add arduino information shortly
please note...ESP32S2 usage is beta at this time.

[SeattleDavid]

Nice!

This is very nice. I am glad that this information was added. So far, I am quite impressed with the ESP32-S2 and with the Metro implementation of it.