Search found 10 matches

by Piocky
Mon Jul 23, 2018 8:01 am
Forum: ESP-IDF
Topic: a2dp sink and WiFi coexistence
Replies: 2
Views: 1724

Re: a2dp sink and WiFi coexistence

Hi Bryan, I would be very interested in having some answers to your questions too! I'm trying to do the same, with an AD2P sink profile and an UDP socket to stream audio. But for now, i've got either packets dropped if the size of the queue which sends data from bluetooth callback to UDP socket is t...
by Piocky
Tue Jul 17, 2018 11:38 am
Forum: ESP-IDF
Topic: Using UDP multicast example to share audio
Replies: 3
Views: 3390

Re: Using UDP multicast example to share audio

I just did some other tests, by using unicast this time as I found that multicast can be an issue (https://tools.ietf.org/id/draft-mcbride-mboned-wifi-mcast-problem-statement-01.html). I've got very good results, even by using an ESP as Access Point (I miss the first packets, but then when I receive...
by Piocky
Thu Jul 12, 2018 12:27 pm
Forum: ESP-IDF
Topic: Using UDP multicast example to share audio
Replies: 3
Views: 3390

Using UDP multicast example to share audio

Hi everyone, I'm currently working on a bluetooth speaker project, and what i'm trying to do now is to create a network to share the audio between several speakers. I tried first to investigate solutions with the ESP-MDF, but apparently the mesh network doesn't support audio yet. So i decided to swi...
by Piocky
Tue Jun 19, 2018 4:58 pm
Forum: ESP-IDF
Topic: PDM microphones: big/little endian
Replies: 0
Views: 1627

PDM microphones: big/little endian

Hi everyone, I'm currently working on a project which uses two of those PDM mics: https://www.invensense.com/wp-content/uploads/2015/02/INMP621.pdf . For now, i'm saving some audio samples in flash memory, and then download them on my laptop, before opening the .pcm files on Audacity. I followed the...
by Piocky
Wed Jun 13, 2018 1:33 pm
Forum: General Discussion
Topic: PDM microphone - how properly handle data?
Replies: 7
Views: 3600

Re: PDM microphone - how properly handle data?

newsettler_AI wrote:I have connected SELECT to GND and set in i2s_config.channel_format = I2S_CHANNEL_FMT_ALL_RIGH
Can you try I2S_CHANNEL_FMT_ONLY_RIGHT instead? I'm not sure if there is really a difference, but i saw many people use only instead of all for mono settings.
by Piocky
Wed Jun 13, 2018 11:34 am
Forum: General Discussion
Topic: PDM microphone - how properly handle data?
Replies: 7
Views: 3600

Re: PDM microphone - how properly handle data?

Is it mandatory to connect SELECT in case I use only I2S_CHANNEL_FMT_ ONLY _RIGHT / I2S_CHANNEL_FMT_ ONLY _LEFT options in config? I think it is. Take a look at the datasheet of the mic, even with mono, they connect the select pin with GND. I think the mic won't work (at least properly) if you don'...
by Piocky
Wed Jun 06, 2018 7:58 am
Forum: ESP-MDF
Topic: ESP32 Mesh network for sharing audio
Replies: 8
Views: 9998

Re: ESP32 Mesh network for sharing audio

This feature of receive audio data from bluetooth and then broadcast to other mesh nodes is not supported yet. But we have exploit a related feature: bluetooth beacon, it can be used in sales promotion, and the feature will soon be released. Okay, thanks for your answer. Do you know by any chance w...
by Piocky
Mon Jun 04, 2018 2:26 pm
Forum: ESP-MDF
Topic: ESP32 Mesh network for sharing audio
Replies: 8
Views: 9998

Re: ESP32 Mesh network for sharing audio

WiFive wrote:No he means receive audio over a2dp sink and repeat it as broadcast to WiFi mesh
Yes sorry, that exactly what i mean. But if it can't work and something else with bluetooth and mesh does, i'm still interesting!
by Piocky
Fri Jun 01, 2018 8:39 am
Forum: General Discussion
Topic: ESP32 Mesh network for sharing audio
Replies: 0
Views: 819

ESP32 Mesh network for sharing audio

Hi,

I'm using the ESP32 for an internship project, and I wanted to know if it was possible to use the mesh network of the ESP for sharing audio sent via bluetooth. I looked for the bandwith to know if it was enough to carry audio, but didn't find that info..
by Piocky
Wed May 30, 2018 11:52 am
Forum: ESP-MDF
Topic: ESP32 Mesh network for sharing audio
Replies: 8
Views: 9998

ESP32 Mesh network for sharing audio

Hi,

I'm using the ESP32 for an internship project, and I wanted to know if it was possible to use the mesh network of the ESP for sharing audio sent via bluetooth. I looked for the bandwith to know if it was enough to carry audio, but didn't find that info..

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