Search found 37 matches

by bobolink
Mon Feb 17, 2020 12:18 pm
Forum: ESP32 Arduino
Topic: SAMPLING AUDIO - How to handle large data?
Replies: 6
Views: 1057

Re: SAMPLING AUDIO - How to handle large data?

For 60 sec. of 16 bit samples 4MB of PSRAM, as suggested above, would work but it has a slow write cycle. I don’t know if it would complete before the next interrupt.
by bobolink
Mon Feb 10, 2020 8:52 pm
Forum: Sample Code
Topic: DSP project using ESP-DSP FIR filter
Replies: 1
Views: 1504

Re: DSP project using ESP-DSP FIR filter

Here’s a YouTube of the FIR Filter (Bandpass) running. Unoptimized ANSI C.
A 220 Tap Filter and the BLE Stack running at the same time in a $1 ESP32 is pretty amazing I think. But then I don’t get out much. :)

https://youtu.be/p_xYwLlHv3Y
by bobolink
Wed Jan 29, 2020 7:38 pm
Forum: Sample Code
Topic: DSP project using ESP-DSP FIR filter
Replies: 1
Views: 1504

DSP project using ESP-DSP FIR filter

I used the Espressif FIR filter from their ESP-DSP Library in a project.
Which someone might find useful.

https://docs.espressif.com/projects/esp ... s.html#fir

https://github.com/bobh/ESP_DSP/tree/ma ... P/ESP32FIR
by bobolink
Tue Dec 31, 2019 4:33 pm
Forum: General Discussion
Topic: BLE Security Passcode
Replies: 10
Views: 8529

Re: BLE Security Passcode

Arduino passcode doesn’t work.
Need to use IDF examples.
by bobolink
Wed Nov 13, 2019 3:17 pm
Forum: ESP32 IDF
Topic: Installing tools: Unsupported archive type OSX
Replies: 5
Views: 519

Re: Installing tools: Unsupported archive type OSX

48 hours later.
____
All done! You can now run:

. ./export.sh
____
"Thank You"
by bobolink
Tue Nov 12, 2019 5:53 pm
Forum: ESP32 IDF
Topic: Installing tools: Unsupported archive type OSX
Replies: 5
Views: 519

Re: Installing tools: Unsupported archive type OSX

And now this ./install.sh Installing ESP-IDF tools Installing tools: xtensa-esp32-elf, xtensa-esp32s2-elf, esp32ulp-elf, openocd-esp32 Skipping xtensa-esp32-elf@esp32-2019r1-8.2.0 (already installed) WARNING: directory for tool xtensa-esp32s2-elf version esp32s2-dev-4-g3a626e9-8.2.0 is present, but ...
by bobolink
Tue Nov 12, 2019 5:19 pm
Forum: ESP32 IDF
Topic: Installing tools: Unsupported archive type OSX
Replies: 5
Views: 519

Re: Installing tools: Unsupported archive type OSX

That looks like a Windows patch.
Removing the space from the url in /tools/tools.json doesn’t work either.
OK two spaces must be removed.
by bobolink
Mon Nov 11, 2019 4:29 pm
Forum: ESP32 IDF
Topic: Installing tools: Unsupported archive type OSX
Replies: 5
Views: 519

Installing tools: Unsupported archive type OSX

Following this: https://docs.espressif.com/projects/esp-idf/en/latest/get-started/index.html#get-started-get-esp-idf Checked this: https://github.com/espressif/esp-idf/issues/4297 Failed. Any help for me? Extracting /Users/bobh/.espressif/dist/xtensa-esp32s2-elf-gcc8_2_0-esp32s2-dev-4-g3a626e-macos....
by bobolink
Tue Aug 20, 2019 11:07 am
Forum: Hardware
Topic: ESP-PROG pin headers
Replies: 4
Views: 873

Re: ESP-PROG pin headers

by bobolink
Thu May 23, 2019 4:46 pm
Forum: General Discussion
Topic: Query regarding ADC features in ESP32 WROVER
Replies: 8
Views: 1673

Re: Query regarding ADC features in ESP32 WROVER

They make an Audio Development Framework. Maybe that would interest your team.

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