what's the Pin for M5dial BtnA

[codeblue]

Hi team,
I wanna use original Micropython firmware for M5dial, but I don't know the GPIO pin for the BtnA,

Can someone helps?

Thanks,
Joey

[ajb2k3]

@codeblue it’s written on the round card in the packaging and on the M5Stack product web page

[Cognitive5525]

I haven't tried the M5dial, but If you look at the hardware documentation (diagrams) for both the
M5Dial and the M5StampS3 there is no mention of a BtnA.

As far as I can figure out there are 3 buttons in total:

• "RST" on the back of the M5dial connected to ESP32-EN" (designated "S4" on the m5dial-diagram)
• "Wake" on the front of the M5dial (the "main button" of the M5Dial I suppose) connected to the power-on circuit but routed via the "wake" signal to ESP-G42. (designated "S1" on the M5dial diagram.)
• The "user button" of the M5StampS3 connected to ESP-G0 (designated "S1" on the M5StampS3 diagram)

[holofloh]

could it be that BtnA is a virtual touchscreen button?

[codeblue]

@cognitive5525 said in what's the Pin for M5dial BtnA:

"Wake" on the front of the M5dial (the "main button" of the M5Dial I suppose) connected to the power-on circuit but routed via the "wake" signal to ESP-G42. (designated "S1" on the M5dial diagram.)

thanks. I think that's it , but I just curious , how you can tell the "S4" is routed to the G42? sorry I know nothing about the hardware. lol

[ajb2k3]

@codeblue Look on the Dials document page as there are descriptions and circuit diagrams

[Cognitive5525]

@codeblue
This diagram on page two.
Here a cutout with my annotation: