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Subject: Re: Rockbox on an ESP32?

Re: Rockbox on an ESP32?

From: Solomon Peachy via rockbox <>
Date: Sat, 8 Apr 2023 14:28:05 -0400

On Sat, Apr 08, 2023 at 01:52:39PM +0000, Tuxic via rockbox wrote:
> I took a look at the specs of that board.
> It may be that at a clock speed of 480Mhz the power
> comsumption is too h igh for a mobile device?

That's the maximum CPU clock speed -- it's dynamically reclockable and
rockbox already has the internal APIs to indicate when we need more or
less oomph. That said, the audio codec/headphone amp, RAM, power supply
(and other analog circuitry) will probably dwarf the CPU core's draw,
even with the display off.

> Forthermore I saw a DAC spec of 12bit only...

That's for the builtin general-purpose DAC/ADCs, which are _not_ used
for audio -- The ADCs are for things like measuring battery voltage,
button input (single input used for most buttons, each registering as a
different voltage) and so forth, whereas the DAC might be used to adjust
backlight brightness or any number of other tasks.

 - Solomon
Solomon Peachy			      pizza at shaftnet dot org (email&xmpp)
                                      _at_pizza:shaftnet dot org   (matrix)
Dowling Park, FL                      speachy (

Received on 2023-04-08

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