Search found 255 matches

by BuddyCasino
Fri Jul 20, 2018 11:39 am
Forum: ESP32 ADF
Topic: ESP-ADF Acoustic Echo Cancellation
Replies: 4
Views: 1215

Re: ESP-ADF Acoustic Echo Cancellation

Nice, this will be a useful component!
by BuddyCasino
Fri Jul 20, 2018 11:38 am
Forum: General Discussion
Topic: streaming music from an Android phone via ESP32 to AUX IN
Replies: 11
Views: 1607

Re: streaming music from an Android phone via ESP32 to AUX IN

This has a bluetooth mode out of the box, I'm having it hooked up to an amp right now: https://github.com/MrBuddyCasino/ESP32_MP3_Decoder
by BuddyCasino
Thu Jul 19, 2018 11:01 am
Forum: ESP32 ADF
Topic: ESP-ADF Acoustic Echo Cancellation
Replies: 4
Views: 1215

Re: ESP-ADF Acoustic Echo Cancellation

In case there will be nothing but crickets: the Chromium source contains a C++ echo canceller for WebRTC that is supposed to be good. I don't know if its suitable for embedded usage though.
by BuddyCasino
Tue Jun 26, 2018 1:55 pm
Forum: General Discussion
Topic: What would you like to see in The Next Chip?
Replies: 261
Views: 46491

Re: What would you like to see in The Next Chip? Rust!

I bet RAM usage would be significantly reduced when using the Rust programming language, combined with a run-to-completion scheduler. Such schedulers lead to significantly better code (no races guaranteed), less overhead and a single stack model (which much reduces RAM usage). Rust also brings bett...
by BuddyCasino
Sat Jun 23, 2018 10:44 am
Forum: ESP32 IDF
Topic: I2S microphone (RX)
Replies: 48
Views: 21106

Re: I2S microphone (RX)

I think the DAC takes unsigned samples, while regular I2S is signed. So you'll need to convert the samples from -32768-32767 to 0-65535. Adding 0x8000 per channel should accomplish that.
by BuddyCasino
Mon May 28, 2018 1:25 pm
Forum: ESP32 IDF
Topic: Description of DMA "sosf" field missing in technical reference manual
Replies: 2
Views: 399

Re: Description of DMA "sosf" field missing in technical reference manual

I don't know what that is, so I searched for "DMA subframe", yet couldn't find a decent explanation. Do you have a link or something?
by BuddyCasino
Thu May 17, 2018 12:38 pm
Forum: ESP32 IDF
Topic: RAM usage for mbedtls
Replies: 21
Views: 3991

Re: RAM usage for mbedtls

That depends on the server you use, of course - nginx, apache, whatever. But OpenSSL only recently added support for that extension, so its possible that yours doesn't support it yet.
by BuddyCasino
Thu May 17, 2018 11:44 am
Forum: ESP32 IDF
Topic: RAM usage for mbedtls
Replies: 21
Views: 3991

Re: RAM usage for mbedtls

I once worked around this issue by using BearSSL (see https://github.com/MrBuddyCasino/ESP32_Alexa/). You get ownership of the buffer, and thus don't have to copy. Its not trivial though, and I can't give any assistance. Another option to safe memory is to not use a threading model, but an event rea...
by BuddyCasino
Thu May 17, 2018 11:21 am
Forum: Showcase
Topic: I2S-parallel example: Drive a 64x32 display
Replies: 44
Views: 16595

Re: I2S-parallel example: Drive a 64x32 display

Props for figuring all this stuff out. Its appreciated.
by BuddyCasino
Tue Apr 17, 2018 2:29 pm
Forum: Showcase
Topic: ARM single wire debug with black magic and the ESP32
Replies: 2
Views: 965

Re: ARM single wire debug with black magic and the ESP32

Nice! Had some trouble flashing BMP to a Blue Pill due to 64k flash limit, this would have saved me some time. Is the port feature complete?

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