Adafruit I2S MEMS Microphone on raspberry pi 3 error

Breakout boards, sensors, other Adafruit kits, etc.

Moderators: adafruit_support_bill, adafruit

Please be positive and constructive with your questions and comments.
Locked
User avatar
tmratwork
 
Posts: 17
Joined: Thu Nov 09, 2017 2:17 am

Adafruit I2S MEMS Microphone on raspberry pi 3 error

Post by tmratwork »

the error: CPU DAI 3f203000.i2s not registered

pi@raspberrypi:~ $ dmesg | grep asoc
[ 2.967405] register platform device 'asoc-simple-card': 0
[ 3.392224] asoc-simple-card asoc-simple-card.0: ASoC: CPU DAI 3f203000.i2s not registered - will retry
[ 3.574000] asoc-simple-card asoc-simple-card.0: ASoC: CPU DAI 3f203000.i2s not registered - will retry
[ 3.574468] asoc-simple-card asoc-simple-card.0: ASoC: CPU DAI 3f203000.i2s not registered - will retry
[ 3.650377] asoc-simple-card asoc-simple-card.0: ASoC: CPU DAI 3f203000.i2s not registered - will retry
[ 3.659547] asoc-simple-card asoc-simple-card.0: snd-soc-dummy-dai <-> 3f203000.i2s mapping ok

following the adafruit tutorial at -> https://learn.adafruit.com/adafruit-i2s ... g-and-test

this used to work on an older installation, but cannot get it to work on the rpi with a new installation. other information about the rpi:

pi@raspberrypi:~ $ vcgencmd version
Dec 1 2017 16:16:37
Copyright (c) 2012 Broadcom
version 38ac72569d7fbd7cf75754d9f14c2495416aaee7 (clean) (release)

pi@raspberrypi:~ $ uname -a
Linux raspberrypi 4.9.67-v7+ #1061 SMP Tue Dec 5 17:17:24 GMT 2017 armv7l GNU/Linux

pi@raspberrypi:~ $ arecord -l
**** List of CAPTURE Hardware Devices ****
card 1: sndrpisimplecar [snd_rpi_simple_card], device 0: simple-card_codec_link snd-soc-dummy-dai-0 []
Subdevices: 1/1
Subdevice #0: subdevice #0

User avatar
tmratwork
 
Posts: 17
Joined: Thu Nov 09, 2017 2:17 am

Re: Adafruit I2S MEMS Microphone on raspberry pi 3 error

Post by tmratwork »

sovled:

1) after fresh install of rasbian, followed tutorial "Add an I2S mic using device tree & simple-audio-card" at https://www.raspberrypi.org/forums/view ... 4&t=173640

2) moved the positive negative mic connections to top half of breadboard (i thought positive/negative rails spanned entire board, but on my board positive/negative on rows 1-30 are connected, and 31-60 connected... my rpi power was in the top half, mics were connected to rails on the bottom half)

Locked
Please be positive and constructive with your questions and comments.

Return to “Other Products from Adafruit”