Posts: 15
Joined: Thu May 04, 2017 12:25 pm

Both speaker and microphone via I2S

Sun May 14, 2017 4:54 am

Hello there,
I've connected a speaker module (Hifiberry DAC) to the Rpi via I2S and it's working ok.
Now I'm trying to connect a microphone also via I2S. What I did was following the instructions in the following page:
https://learn.adafruit.com/adafruit-i2s ... g-and-test

Somewhere in the middle, it says:
Download the module, written by Paul Creaser

git clone https://github.com/PaulCreaser/rpi-i2s-audio
cd rpi-i2s-audio
make -C /lib/modules/$(uname -r )/build M=$(pwd) modules
sudo insmod my_loader.ko

Verify that the module was loaded:
lsmod | grep my_loader
dmesg | tail
But in dmesg I get:
bcm2835-i2s 3f203000.i2s: Trying to bind component to card "snd_rpi_simple_card" but is already bound to card "snd_rpi_hifiberry_dac"
It seems that the mic is trying to bind to the same sound card the speaker is bound to. What can I do? Is there another option to connect both mic and speaker to I2S?


Posts: 2
Joined: Tue May 23, 2017 8:33 am

Re: Both speaker and microphone via I2S

Tue May 23, 2017 8:34 am

Did you find an answer to this? I'm running into the same problem

Posts: 2
Joined: Thu Sep 14, 2017 10:06 am

Re: Both speaker and microphone via I2S

Tue Sep 19, 2017 7:17 pm

Any answer on this one? I've just encountered the same..

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