BEAGLEBK: I2S Output on BeagleBone Black

Mustafa Homsi

Part Number: BEAGLEBK

Is it possible to output I2S signal on BeagleBone BLACK pins? If yes, can you please point me to the documentation or describe what needs to be done. Ideally, we want to play a wave file and output it as an I2S signal. Thanks!

over 5 years ago

0 deepikateriar over 5 years ago

Genius 5870 points

Hi,

This could be of your help. Below are the beaglebone black connections:

Ball No.	Signal	Pin	McASP Signals	Name

A13	SPI1_SCLK	P9.31	MCASP0_ACLKX	Bit Clock
B13	SPI1_D0	P9.29	MCASP0_FSX	Word Clock
D12	SPI1_D1	P9.30	MCASP0_AXR0	Tx
C12	SPI1_CS0	P9.28	MCASP0_AXR2/ MCASP0_AHCLKR	Rx

Thanks

Deepika

0 Mustafa Homsi over 5 years ago in reply to deepikateriar

Expert 1181 points

Thanks deepikateriar. This shows the pinouts but what do I need to do to configure the software to play a wave file on these pins using I2S protocol?

0 Bin Liu over 5 years ago in reply to Mustafa Homsi

TI__Guru**** 180866 points

Hi Mustafa,

So you use Linux or RTOS?

0 Mustafa Homsi over 5 years ago in reply to Bin Liu

Expert 1181 points

Linux (using yocto bitbake).

0 Bin Liu over 5 years ago in reply to Mustafa Homsi

TI__Guru**** 180866 points

Hi Mustafa,

I am assigning your query to the expert. The response will be posted here.

0 Krunal Bhargav34 over 5 years ago in reply to Bin Liu

TI__Mastermind 45065 points

Hello,

Please refer to the following guides for your reference:

1. https://www.ti.com/lit/an/sprac97/sprac97.pdf?ts=1613771096259&ref_url=https%253A%252F%252Fwww.google.com%252F

2. https://www.mantralabsglobal.com/blog/how-to-interface-an-i2s-microphone-with-beaglebone-blackbbb/

The above guides demonstrate how to configure the pins, McASP and compile the Kernel.

Regards,
Krunal

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BEAGLEBK: I2S Output on BeagleBone Black