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av500
Associate II
March 27, 2026
Question

CubeMX2, even when doing transmit or receive only I2S, both SDI and SDO are muxed

  • March 27, 2026
  • 5 replies
  • 499 views

e.g. select I2S with "Master transmit" which should only use I2S_CK, I2S_WS and I2S_SDO, yet the I2S_SDI pin is also muxed and blocked for other use (and both DMA directions are available)

Screenshot_20260327_113109.pngScreenshot_20260327_113140.png

 

5 replies

av500
av500Author
Associate II
March 27, 2026

with old CubeMX, one could select a custom sample rate:

Screenshot_20260327_112703.png 

new CubeMX2 only provides a fixed list, it should also allow a user defined sample rate

ST Technical Moderator
March 27, 2026

Hello @av500 

Thank you for bringing this issue to our attention.

I reported this internally.

Internal ticket number: CDM0061115

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