I2S under STM32CubeIde on Nucleo144 STM32F767ZI not generating clock or word select signals !

[L77d]

Hi,

Still attempting to work with STM32F767ZI board to generate signals to manage I2S mic (INMP441)

I have followed many recommendations, even used MX, but still no clock nor word select signals are generated from MCU....

But throu GPIO I can generate a clean square signal ?! So ?

Did I miss a thing ?

Thx very much for your help

[Imen.D]

Hello @L77d 

Check your STM32F767ZI-Nucleo Set-up and configuration within the available example (check recommendations in the readme file), then update the project according to your needs:

STM32CubeF7/Projects/STM32F767ZI-Nucleo/Examples/I2S/I2S_DataExchangeInterrupt at master · STMicroelectronics/STM32CubeF7 · GitHub

[L77d]

Hello Imen.D,

I follow your recommandations, and tried the example, and it works.

The main problem was here:

I2SHandle.Init.Mode = I2S_MODE_MASTER_RX;

You have to set in master mode to get driving signals under i2s1

So I decided to go back to MX and take care of this, in a new configuration, but it really not works !

Why ?

[Imen.D]

Which STM32CubeMX version used ?

If not the version 6.15 is used, please update it and test with this latest release.

[L77d]

Sorry I mean

STM32CubeIDE

Version: 1.19.0

Build: 25607_20250703_0907 (UTC)

[L77d]

This is now correct, I can see signals on scope (WS, CLK,SD)

But it seems that i2s data (SD) are not read ...or I'm not doing correctly ;

[Tesla DeLorean]

>>or I'm not doing correctly

Present some actual code, diagram what you've built, describe expectations, this thought projection method of describing working/not-working is not effective in a group/team environment.