It's far far easier and simpler to buy a USB current/voltage meter (ebay £3.99!) and measure real world consumption - than calculate from docs/specs.

HI
I had a few problems with this also, don't know if I'm doing it correctly - but this worked for me,
and I tried many different things.



audio_pipeline_terminate(pipeline);

if (strstr(Mp3Files[Mp3Stack[Mp3StackPos]].c_str(), (const char*)".mp3"))
{
audio_decoder = mp3_decoder;
const char ...

probably the mixer line-in routing isn't setup properly.

You'll need to read the AC101 codec data sheet and bodge in some functionality to do that.

http://www.x-powers.com/en.php/Info/down/id/96

I'd would code this up - but I no longer have my A1S boards for a short while :(

Seeed has some ...

Why C over C++?

C is traditionally used in embedded because of it lightweight nature. C++ can be rather heavy on memory usage esp with STl.

With C you can control where your memory is allocated - dram or spi ram - very easily with the esp malloc. With C++ and STL it's rather complicated to write a ...

ummm it's the version on that's linked on the github page I made:

https://github.com/espressif/esp-adf/tree/3305749c93763b7a83d030e7f30b28f3aeb1d186

that also has a symbolic link to the IDF version required.

you also have to first select the board with "idf.py menuconfig" before you build.

I ...

I'm afraid not - the mp3/flac player I wrote only plays random files from the sd-card every time. It's like a "discovery" shuffle system - I wrote it so I could never actually select a track - just Prev/Next from a random list sized 1024 tracks. I wrote it this way because I have some many audio ...

Awesome!

No I have no links - I found it by myself when playing around with mp3/flac decoders on the different cores. I think it's linked to the task context switcher not saving the fpu state properly - that's just a guess tho - I didn't have time to investigate it further.

The mp3 decoder has issues running on core 1 - it's fpu thing. Guessing M4A has the same thing?

Flac has no problem on core-1, mp3 decodes badly with noise.

It could be that? try running on core-0 to test.

Hi Esp32 Folk


I'm guessing the I2C system is limited to around 1mhz?

I'm testing out various OLEDs - that I know can run above 1mhz - and I'm getting about 1.1mhz speed out the current I2C IDF system.

OLED is a SSD1327, buffer size is 8192 bytes - i2c speed is set to 2,000,000. Transfer time is ...

OMG - that is awesome!

took me a few hours previously adding *every single* component dir (idf and adf) path into a vs project


Thank you!