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STM32L552 I2S DMA and CDC continuous transfer problem

I have an ADC connected to my MCU using I2S. MCU configured in I2S master receive mode. MCU supplying the ADC with 12MHZ MCLK. MCU sampling freq is 48 KHZ(Actual is 46.875 KHZ), Number of slots are 4, Data size is 16bits and I2S standard protocol. Us...

Dhanaraj by Associate
  • 3 replies
  • 0 kudos

STM32H743 SAI DMA noise

Hello,I took over working code that I have for a DSP project from an STM32F439 to an STM32H743. On the F4 I had the external audio codec connected to the I2S peripheral but switched over to the SAI on the H7. Now I am experiencing excessive noise whe...

Screenshot 2023-09-05 165736.png Screenshot 2023-09-05 170054.png Screenshot 2023-09-05 191001.png Screenshot 2023-09-05 191015.png
JP_ama by Associate III
  • 1 replies
  • 0 kudos

Resolved! NUCLEO-H723ZG I2S with PI-mod i2s stereo codec

Hey everyoneI was successfully running i2s on the stm m4 cores but trying to make the jump to h7 and running into a issue. Using the same code and the DMA triggers but no code is being loaded in the rx buffer. Not sure the tx buffer is being sent out...

Power on built in test for STM32F446RE

Hello,   I am using STM32F446RE in my project and as per the project requirements I need to have power on built in test, initiated built in test and continuous built in test on STM32F446RE. Please let me know how different built-in self-tests can be ...

PAcha.1 by Associate
  • 4 replies
  • 1 kudos

Resolved! Mysterious memory behaviour in simple DSP test program

Hello,I am currently developing a DSP application on an STM32F439ZI Nucleo board in combination with a Pmod I2S2 audio codec board. So far, basic testing and filtering worked fine until I started to try FFT processing. I isolated the issue in a simpl...

JP_ama by Associate III
  • 20 replies
  • 3 kudos

I2S MASTER desynchronization at start

Hello,i working in I2S since 6 month on STM32F405. after several analyzes, we have problems.we work on I2S is connected on SGT5000.SGTL5000 must have continous master clock to communicate with him on I2C.So the design started I2S MASTER with DMA all ...

trave.1 by Associate II
  • 2 replies
  • 0 kudos

STM32H7 I2S no data on Data line

Hello, I am interfacing audio Codec SGTL5000 with STM32H7 Nucleo board. I2S peripheral is initialized using the HAL init function. I converted a wav file to a C array and trying to transmit that to the Codec. STM32 is configured as Master TX and Code...

panrod by Associate II
  • 7 replies
  • 0 kudos

TIM I2S using SPI

Hello Everybody,I am trying to emulate I2S using the SPI interface on the STM32F103.I have looked at the AN5086, but setting up the timer correctly is still unsuccessful.The SPI-CLK is connected to the TIM2 via Channel configured as "input capture di...

PGild.1 by Associate III
  • 5 replies
  • 0 kudos

Resolved! Bit-banged I2S on STM32F103

Hello everybody,I am trying to bit-bang an I2S interface on an STM32F103 at 72MHz using TIM2.Am I way too optimistic to get a 3MHz "clock" out on a pin? The fastest I can seem to get it is at 90kHz.I have set the "prescaler" of TIM2 to "0" and "1".An...

PGild.1 by Associate III
  • 4 replies
  • 0 kudos