STM32 MCUs Wireless

How can I set the right parameters for the SAI using PDM interface?

Hi, i'm using the STM32WB5MM-DK borad and i encountered some problems about acquiring data from the SAI using the PDM interface.On my board is mounted the IMP34DT05 microphone which requires a clock frequency between 1.2MHz and 3.25MHz to work. I can...

source: en.fp-aud-bvlinkwb2.zip I want to output the Central's USB output to the codec chip (sgtl5000) through the SAI interface.

Voice is heard through the codec chip, but the noise is severe.There is no noise when you listen to the voice from the PC through the USB output.I don't know if the SAI setting on the Central is wrong or the codec chip setting is wrong. If you playba...

Why is the SAI (I2S) used in DMA mode generate noise

I am using a SAI device on a SMT32WB55. Using it as a wavetable synth that produces a triangle wave. I am able to play my triangle wave for x amount of time with HAL_SAI_Transmit_DMA(&hsai_BlockA1, (uint8_t*)data, size);And later stop it with a timer...

Some questions about SAI configuration for PDM audio acquisition

I'm using SAI PDM interface to record pdm audio coming from 4 microphones. I'm using a stm32wb55rg and the memsmic1's example.There are some parts I don't understand with the SAI configuration in the example. Here is a part of the code provided in th...

I'm having issues with the DMA Callback functions never being called after triggering the "HAL_SAI_Transmit_DMA" function.

Situation - I'm combining code examples from the STM32WB Opus Library code, with that of the Echo Cancellation (AEC) Function Pack. Using the code base to have support for a microphone, speaker, and Bluetooth. When implementing the code for the CCA01...

Is there any example of using audio codec over I2S on STM32WB? I have the stm32wb5mm_dk BV_FULLBAND example and the audio SAI1 is initialized for external microphone mems. But i want to record 48kHz stereo audio instead and i am looking for an example.

Need clarification about SAI Interface in STM32WB5M disco board

Hi there,We purchased STM32WB5M-DK for our project. In STM32WB5M, We have only one SAI Interface. We connected PDM Microphone (MP34DT01-M) on SAI1 A. I want to play the audio signal with speaker through speaker amplifier. I'm using TAS2770 speaker am...

Resolved! SAI: Won't stay enabled (H7 and WB)

Hi - I'm having a real struggle with the SAI peripheral. I've tried on both H742, and WB55 module, and am running into the same problem.I have the source set up in the clock config (Tried both PLL1 and PLL2, and using PLLSA1P on WB), and made sure I ...

Resolved! STM32WB - STM32Cube SAI HAL code generation bug

Hi,I found a possible bug in the "stm32wbxx_hal_msp.c" file when using Cube in the STM32CubeIDE to enable the SAI peripheral.I did not test all the combinations, but have mine set up as follows:SAI A - Async SlaveSAI B - Sync Slave The bug is that th...

SAI peripheral: separate kernel clocks for Block A and Block B?

I am working on a project based on the STM32WB55VG. I am trying to use SAI Block A as a PDM interface to receive data from two digital microphones. I would also like to use SAI Block B as an I2S interface to output audio data to an amplifier.In RM043...