Search found 41 matches

by bobolink
Sat Aug 22, 2020 11:21 am
Forum: ESP32 Arduino
Topic: Best Frequency Meter ever made with ESP32 - awesome!
Replies: 11
Views: 968

Re: Best Frequency Meter ever made with ESP32 - awesome!

Thank you for all your work on this.
by bobolink
Thu Jul 23, 2020 11:15 am
Forum: General Discussion
Topic: Speed of Switching between Wifi and Bluetooth
Replies: 3
Views: 717

Re: Speed of Switching between Wifi and Bluetooth

I’m just trying that now. I’ve completed the secure BLE side and now adding a simple tcp/ip connection to a non-secure server. But I will try the Arduino IDE first before ESP-IDF since that will appeal to more hobbyist-type people. Which is the audience. If the ESP32 can pull this off, It will be am...
by bobolink
Tue Jun 23, 2020 11:55 am
Forum: Hardware
Topic: Memory Layout BUG Overlap on BOOT
Replies: 8
Views: 1512

Re: Memory Layout BUG Overlap on BOOT

And the takeaway from this exchange is that there is such a thing as the “ESP Journal”
:o
https://medium.com/the-esp-journal
by bobolink
Wed May 20, 2020 11:31 am
Forum: Hardware
Topic: ESP32 LyraT v4.3 Aux input circuit is highly confusing and surely wrong
Replies: 17
Views: 4235

Re: ESP32 LyraT v4.3 Aux input circuit is highly confusing and surely wrong

I’m interested in this topic as well.

Dana,
Does the AI-Thinker board have these parts?

Bob
by bobolink
Mon Feb 17, 2020 12:18 pm
Forum: ESP32 Arduino
Topic: SAMPLING AUDIO - How to handle large data?
Replies: 6
Views: 2214

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: 6314

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: 6314

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: 14
Views: 12953

Re: BLE Security Passcode

Arduino passcode doesn’t work.
Need to use IDF examples.
by bobolink
Wed Nov 13, 2019 3:17 pm
Forum: ESP-IDF
Topic: Installing tools: Unsupported archive type OSX
Replies: 5
Views: 1148

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: ESP-IDF
Topic: Installing tools: Unsupported archive type OSX
Replies: 5
Views: 1148

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 ...

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