Search found 12 matches

by colinives
Mon Mar 23, 2020 10:43 am
Forum: ESP IoT Solution
Topic: Using BLE Mesh and A2DP simultaneously
Replies: 0
Views: 3549

Using BLE Mesh and A2DP simultaneously

Is it possible to still use A2DP with ESP mesh running. I have a product under development where one, or more, of the nodes needs to drive sound to selected headphones near it. I have looked and note the wifi/mesh interoperability but not BT Classic/A2DP and mesh. I'm using Wrovers so have the extra...
by colinives
Thu Mar 19, 2020 5:29 pm
Forum: Hardware
Topic: Driven shield for touch sensors
Replies: 1
Views: 928

Re: Driven shield for touch sensors

By the way - I have previously used touch sensors which used a static DC voltage to read the touch sensor - in this situation I drove a plane behind the sensor using a DAC with the average analog sense voltage on the touch pin - this worked very well. The trouble I have with the ESP32 is that it dri...
by colinives
Thu Mar 19, 2020 4:58 pm
Forum: Hardware
Topic: Driven shield for touch sensors
Replies: 1
Views: 928

Driven shield for touch sensors

I'm working on a product development using a touch wheel based on the ESP32 touch sensors. The ESP32 is very close behind the touch wheel and the grounded meta cover is messing with the sensitivity. I could design in a driven shield plane between the touch sensors and the ESP32 metal case but don't ...
by colinives
Thu Mar 19, 2020 9:06 am
Forum: ESP32 IDF
Topic: Using BLE Mesh and A2DP
Replies: 0
Views: 1099

Using BLE Mesh and A2DP

Is it possible to still use A2DP with ESP mesh running. I have a product under development where one, or more, of the nodes needs to drive sound to selected headphone near it. I have looked and note the wifi/mesh interoperability but not BT Classic/A2DP and mesh. I'm using Wrovers so have the extra ...
by colinives
Wed Mar 18, 2020 1:36 pm
Forum: ESP32 ADF
Topic: ADF without codec
Replies: 2
Views: 6012

Re: ADF without codec

Thanks for responding. I guess I'm trying to implement some audio functions with ADF but don't use the line or mic in and am happy with 8-bit internal DAC and A2DP for audio output. I have space issues and want to avoid using a codec chip if I can. I have a LyraT unit I'm which using for development...
by colinives
Sat Mar 14, 2020 12:24 am
Forum: ESP32 IDF
Topic: BLE
Replies: 2
Views: 1892

Re: BLE

Thank you for your information.
by colinives
Wed Mar 11, 2020 5:41 pm
Forum: ESP32 IDF
Topic: BLE
Replies: 2
Views: 1892

BLE

Hi there. I have a product under development which has a handheld BLE server controlling 3 clients - probably with SPP. The questions I have are: 1). I assume I can connect with more than one BLE device at a time?? Any points on how to do/where to look. 2). If I know the BD name etc of the clients -...
by colinives
Tue Mar 10, 2020 10:33 am
Forum: Documentation
Topic: Filling pipeline with software generate sine wave
Replies: 4
Views: 7492

Re: Filling pipeline with software generate sine wave

Thank you. I can confirm that I have success delivering various tones to standard A2Dp headset at a sample rate of 44100. The big problem now is that the after 110 seconds from connecting the A2DP disconnects - then reconnects for another 110 seconds and repeats. I have looked around the code and ca...
by colinives
Sat Mar 07, 2020 9:17 pm
Forum: ESP32 ADF
Topic: ADF without codec
Replies: 2
Views: 6012

ADF without codec

My product (in development) mainly sends data direct to phones/speaker via Bluetooth a2dp. The source is wav, mp3 files (on sdcard) and program-generated tones. I have managed this part without use of the codec but I also want to capture new files received over http coded into mp3 and stored on sdca...
by colinives
Sat Mar 07, 2020 8:19 pm
Forum: Documentation
Topic: Filling pipeline with software generate sine wave
Replies: 4
Views: 7492

Re: Filling pipeline with software generate sine wave

Thank you so much for your reply,

I guess I missed it as it doesn’t use a pipeline/stream.

Can I assume that the format is:

Sample Rate: 44100
Data size: 16 bits
Format: L-R. 16 bit little-endian?

Thank you again.

Colin

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