Search found 98 matches

by bobolink
Sat Aug 06, 2022 12:39 pm
Forum: ESP32 Arduino
Topic: Simulate a bluetooth headset
Replies: 2
Views: 1880

Re: Simulate a bluetooth headset

lol
I did a project using ANCS I had forgotten all about.
Not clear if I used an ESP32.
https://youtu.be/puEiLR9UMG4
by bobolink
Sat Aug 06, 2022 11:16 am
Forum: ESP32 Arduino
Topic: Simulate a bluetooth headset
Replies: 2
Views: 1880

Re: Simulate a bluetooth headset

For iOS, one way is to use ANCS on the ESP32. The purpose of the Apple Notification Center Service (ANCS) is to give Bluetooth accessories (that connect to iOS devices through a Bluetooth low-energy link) a simple and convenient way to access many kinds of notifications that are generated on iOS dev...
by bobolink
Fri Jun 24, 2022 10:33 am
Forum: ESP-IDF
Topic: Can we program ESP32 UART in assembly language ?
Replies: 5
Views: 2102

Re: Can we program ESP32 UART in assembly language ?

A google search for “risc-v uart assembly” turned up lots of examples for me.
I think it is a popular homework assignment.
by bobolink
Thu Jun 16, 2022 12:55 pm
Forum: ESP32 Arduino
Topic: ESP32 Interrupt jitter at 20kHz
Replies: 2
Views: 1987

Re: ESP32 Interrupt jitter at 20kHz

One thing you might try is to dedicate an entire core to just collecting samples and then give them to the other core for processing. This method has latency due to collecting enough samples for a “frame” and doesn’t operate sample by sample. Which might be OK for an FFT. https://github.com/bobh/ESP...
by bobolink
Thu Jun 16, 2022 11:18 am
Forum: ESP-IDF
Topic: About ESP32 ADC max sample frequency
Replies: 1
Views: 1242

Re: About ESP32 ADC max sample frequency

although the esp32 can support 2MHz max sample frequency
Where did you find that specification?

For example, the ESP32-C3 is rated at 100 ksps.
https://www.espressif.com/sites/default ... pdf#page32
by bobolink
Wed Apr 13, 2022 12:20 pm
Forum: ESP32 Arduino
Topic: Unable to program/Boot loop custom ESP32-C3-MINI board
Replies: 13
Views: 10522

Re: Unable to program/Boot loop custom ESP32-C3-MINI board

So, em, the C3 has a built-in USB-to-serial-JTAG converter...
Here is the first commercial board I’ve seen without the download chip.
https://www.espressif.com/en/news/M5Stamp_C3U

I don’t have openocd/gdb working on it yet but I’m on it. :D
by bobolink
Mon Apr 04, 2022 12:05 pm
Forum: ESP32 Arduino
Topic: send data thru BLE between 2 esp32
Replies: 4
Views: 3046

Re: send data thru BLE between 2 esp32

This example sends a discrete IO bit over BLE
ESP32-C3, Arduino IDE, nimble BLE stack.
https://github.com/bobh/nimBLE-discrete-xfer
by bobolink
Mon Dec 06, 2021 12:42 pm
Forum: General Discussion
Topic: ESP RF Test Tool not compatible with native USB on ESP32-S3
Replies: 16
Views: 42328

Re: ESP RF Test Tool not compatible with native USB on ESP32-S3

Seon,
After you get it all straight, a um video on debugging with “JTAG via USB-serial” would be interesting. While you are waiting for production S3s.
by bobolink
Tue Nov 16, 2021 12:27 pm
Forum: ESP-BOX
Topic: Welcome to use ESP-BOX project!
Replies: 4
Views: 43123

Re: Welcome to use ESP-BOX project!

I see the PCB art but are the gerber files available?
And STL files on thingverse for that nifty enclosure—would be nice.
:D
But looks like fun.