MAX98357 issues

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jk3ger
 
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Joined: Wed Oct 13, 2021 4:45 am

MAX98357 issues

Post by jk3ger »

Hello, I'm using board with MAX98357A chip and Raspberry Pi 4 model B.
I followed examples on this link https://learn.adafruit.com/adafruit-max ... y-pi-usage
After rebooting I see BCLK and LRCLK signals on oscilloscope but there is no DOUT pulses (only zero logic level) from GPIO21 of Rasberry. As a result there is no sound from speaker.
I tried Raspberry Pi CM4 board with IO Board but result the same.
So, Do you have some ideas how It can be fixed.

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adafruit_support_carter
 
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Re: MAX98357 issues

Post by adafruit_support_carter »

What OS image are you using?

Did you see any errors when you ran the install script?

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jk3ger
 
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Re: MAX98357 issues

Post by jk3ger »

There is no errors. Everything goes as it described in adafruit manual.

Code: Select all

pi@raspberrypi:~ $ cat /etc/os-release
PRETTY_NAME="Raspbian GNU/Linux 10 (buster)"
NAME="Raspbian GNU/Linux"
VERSION_ID="10"
VERSION="10 (buster)"
VERSION_CODENAME=buster
ID=raspbian
ID_LIKE=debian
HOME_URL="http://www.raspbian.org/"
SUPPORT_URL="http://www.raspbian.org/RaspbianForums"
BUG_REPORT_URL="http://www.raspbian.org/RaspbianBugs"

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adafruit_support_carter
 
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Re: MAX98357 issues

Post by adafruit_support_carter »

Thanks, that should all be fine.

Were you using the Fast Install or the Detail Install approach when setting things up?
https://learn.adafruit.com/adafruit-max ... y-pi-usage

Can you post a photo of your setup so we can look for anything that might be wrong with the hardware.

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jk3ger
 
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Joined: Wed Oct 13, 2021 4:45 am

Re: MAX98357 issues

Post by jk3ger »

Thanks for attention.
Everything is solved.
After second rebooting I re-ran the script and choose N the /dev/zero playback service.
Than sudo reboot and after that i2s started working.

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