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Bluetooth SDK

MaCh_4826131
New Contributor II

Hi,

I have a microphone connected to my CYW920819 board via i2s.

Unfortunately I am unable to get it to stream to my bt headphones via a2dp (is it even possible?).

I am using the watch example for this board and followed the blog below to route i2s.

https://community.cypress.com/t5/Resource-Library/PCM-I2S-Clock-setting-in-CYW20706/ta-p/246335?emcs...

Any help would be greatly appreciated.

Thanks in advance!

 

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1 Solution
DheerajPK_41
Moderator
Moderator

Hi,

CYW20819 is configured as i2s master in the watch app (in wiced_audio_start()). So the i2s mic giving the input should be a slave inroder to work the interface. And in master mode the clock rate for 20819 can be 16 kHz × 16 bits per frame = 256 kHz as per the spec (https://www.cypress.com/file/462851/download).  Please ensure that these conditions are satisfied. 

Also, May I know which  I2S microphone are you using?

I will check whether there is any other restrictions to use i2s interface in 20819 chip or not.

 

Thanks,

-Dheeraj

View solution in original post

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3 Replies
DheerajPK_41
Moderator
Moderator

Hi,

Could you please provide us more information on how you connected microphone to CYW920819 board?

Are you using any audio/codec board?

 

Thanks,

-Dheeraj

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MaCh_4826131
New Contributor II

Hi, 
I've connected it to J4.1 (Di), J12.6(WS) and J12.5 (CLK).

I'm not using another audio/codec board, just an I2S microphone. 

 

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DheerajPK_41
Moderator
Moderator

Hi,

CYW20819 is configured as i2s master in the watch app (in wiced_audio_start()). So the i2s mic giving the input should be a slave inroder to work the interface. And in master mode the clock rate for 20819 can be 16 kHz × 16 bits per frame = 256 kHz as per the spec (https://www.cypress.com/file/462851/download).  Please ensure that these conditions are satisfied. 

Also, May I know which  I2S microphone are you using?

I will check whether there is any other restrictions to use i2s interface in 20819 chip or not.

 

Thanks,

-Dheeraj

View solution in original post

0 Likes