About Audo codec example code with STM32H747I-DISCO

[Son, Dong-Seong]

Hi

I have a STM32H747I-DISCO board

I want to test Audio codec ( WM8994ECS/R ) with SAI

I didnot find an example code for it.

Can I get an example code for Audio Codec with IOC file

[Imen.D]

Hello @Son, Dong-Seong​,

You can get inspired from the SAI example available within STM32CubeH7 MCU package:

\STM32Cube_FW_H7_Vx.x.x\Projects\STM32H745I-DISCO\Examples\SAI\SAI_AudioPlayback\

This example runs on STM32H747xx/STM32H745xx devices, and you can follow the readme file to make the program work.

You can refer to the reference manual RM0399 section 54 Serial audio interface (SAI) and the user manual UM2488 section 6.7 Audio.

When your question is answered, please close this topic by choosing Select as Best. This will help other users find that answer faster.

Imen

[Son, Dong-Seong]

Thank you for your response.

I am setting from IOC file by referring to SAI_AudioPlayback code.

​The following is the configuration of the ioc file

​The following is the code that performed [generate code] from the ioc file.

​

 hsai_BlockA4.Instance = SAI4_Block_A;

 hsai_BlockA4.Init.Protocol = SAI_FREE_PROTOCOL;

 hsai_BlockA4.Init.AudioMode = SAI_MODESLAVE_RX;

 hsai_BlockA4.Init.DataSize = SAI_DATASIZE_16;

 hsai_BlockA4.Init.FirstBit = SAI_FIRSTBIT_LSB;

 hsai_BlockA4.Init.ClockStrobing = SAI_CLOCKSTROBING_FALLINGEDGE;

 hsai_BlockA4.Init.Synchro = SAI_ASYNCHRONOUS;

 hsai_BlockA4.Init.OutputDrive = SAI_OUTPUTDRIVE_DISABLE;

 hsai_BlockA4.Init.FIFOThreshold = SAI_FIFOTHRESHOLD_HF;

 hsai_BlockA4.Init.SynchroExt = SAI_SYNCEXT_DISABLE;

 hsai_BlockA4.Init.MonoStereoMode = SAI_STEREOMODE;

 hsai_BlockA4.Init.CompandingMode = SAI_NOCOMPANDING;

 hsai_BlockA4.Init.TriState = SAI_OUTPUT_RELEASED;

 hsai_BlockA4.Init.PdmInit.Activation = DISABLE;

 hsai_BlockA4.Init.PdmInit.MicPairsNbr = 1;

 hsai_BlockA4.Init.PdmInit.ClockEnable = SAI_PDM_CLOCK1_ENABLE;

 hsai_BlockA4.FrameInit.FrameLength = 32;

 hsai_BlockA4.FrameInit.ActiveFrameLength = 1;

 hsai_BlockA4.FrameInit.FSDefinition = SAI_FS_STARTFRAME;

 hsai_BlockA4.FrameInit.FSPolarity = SAI_FS_ACTIVE_HIGH;

 hsai_BlockA4.FrameInit.FSOffset = SAI_FS_FIRSTBIT;

 hsai_BlockA4.SlotInit.FirstBitOffset = 0;

 hsai_BlockA4.SlotInit.SlotSize = SAI_SLOTSIZE_DATASIZE;

 hsai_BlockA4.SlotInit.SlotNumber = 2;

 hsai_BlockA4.SlotInit.SlotActive = 0x00000002;

 if (HAL_SAI_Init(&hsai_BlockA4) != HAL_OK)

 {

  Error_Handler();

 }

​

​I don't know where [hsai_BlockA4.Init.PdmInit.] in the code above is in the IOC file.

That part is different from the part in the SAI_AudioPlayback code, but I don't know where to modify it in the ioc file.

​

Please let me know where to fix.

​

[Son, Dong-Seong]

Thank you for your response.

I am setting from IOC file by referring to SAI_AudioPlayback code.

​The following is the configuration of the ioc file

​The following is the code that performed [generate code] from the ioc file.

​

  hsai_BlockA4.Instance = SAI4_Block_A;

  hsai_BlockA4.Init.Protocol = SAI_FREE_PROTOCOL;

  hsai_BlockA4.Init.AudioMode = SAI_MODESLAVE_RX;

  hsai_BlockA4.Init.DataSize = SAI_DATASIZE_16;

 hsai_BlockA4.Init.FirstBit = SAI_FIRSTBIT_LSB;

  hsai_BlockA4.Init.ClockStrobing = SAI_CLOCKSTROBING_FALLINGEDGE;

  hsai_BlockA4.Init.Synchro = SAI_ASYNCHRONOUS;

  hsai_BlockA4.Init.OutputDrive = SAI_OUTPUTDRIVE_DISABLE;

  hsai_BlockA4.Init.FIFOThreshold = SAI_FIFOTHRESHOLD_HF;

  hsai_BlockA4.Init.SynchroExt = SAI_SYNCEXT_DISABLE;

  hsai_BlockA4.Init.MonoStereoMode = SAI_STEREOMODE;

  hsai_BlockA4.Init.CompandingMode = SAI_NOCOMPANDING;

  hsai_BlockA4.Init.TriState = SAI_OUTPUT_RELEASED;

  hsai_BlockA4.Init.PdmInit.Activation = DISABLE;

  hsai_BlockA4.Init.PdmInit.MicPairsNbr = 1;

  hsai_BlockA4.Init.PdmInit.ClockEnable = SAI_PDM_CLOCK1_ENABLE;

  hsai_BlockA4.FrameInit.FrameLength = 32;

  hsai_BlockA4.FrameInit.ActiveFrameLength = 1;

  hsai_BlockA4.FrameInit.FSDefinition = SAI_FS_STARTFRAME;

  hsai_BlockA4.FrameInit.FSPolarity = SAI_FS_ACTIVE_HIGH;

  hsai_BlockA4.FrameInit.FSOffset = SAI_FS_FIRSTBIT;

  hsai_BlockA4.SlotInit.FirstBitOffset = 0;

  hsai_BlockA4.SlotInit.SlotSize = SAI_SLOTSIZE_DATASIZE;

  hsai_BlockA4.SlotInit.SlotNumber = 2;

  hsai_BlockA4.SlotInit.SlotActive = 0x00000002;

  if (HAL_SAI_Init(&hsai_BlockA4) != HAL_OK)

  {

   Error_Handler();

  }

​

​I don't know where [hsai_BlockA4.Init.PdmInit.] in the code above is in the IOC file.

That part is different from the part in the SAI_AudioPlayback code, but I don't know where to modify it in the ioc file.

​

Please let me know where to fix.

​