Search found 252 matches

by BuddyCasino
Tue Jun 26, 2018 1:55 pm
Forum: General Discussion
Topic: What would you like to see in The Next Chip?
Replies: 198
Views: 30087

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: 16221

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: 195

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: 2371

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: 2371

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: 39
Views: 9902

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: 505

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?
by BuddyCasino
Thu Apr 05, 2018 1:44 pm
Forum: Hardware
Topic: What is the optimal position of ESP-WROOM-32 on base board ?
Replies: 3
Views: 358

Re: What is the optimal position of ESP-WROOM-32 on base board ?

Look at the antenna feed points, the two bright spots on the black antenna part. In Pos 3 & 4, they are at the edge of the board, in all others they are in the middle of the PCB.
by BuddyCasino
Wed Apr 04, 2018 12:45 pm
Forum: General Discussion
Topic: ESP32 and flight controllers for drones
Replies: 9
Views: 1092

Re: ESP32 and flight controllers for drones

Deouss wrote:but they are not so great comparing to ESP32

Can you expand?
by BuddyCasino
Tue Mar 06, 2018 11:13 pm
Forum: ESP32 IDF
Topic: I2S Audio Crackling / Pops
Replies: 1
Views: 392

Re: I2S Audio Crackling / Pops

On a side note, is it possible to have the I2S driver send silence instead of the last buffer if it receives no data in time? I've yet to come across a situation where a buffer underrun doesn't result in annoying buzzes. Silence would definitely be the preferred output if there's no data. +1 for that

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