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I2S interface issue on STM32F7 Nucleo board

Question asked by Trilok JT on Nov 23, 2017

Hi.,

I am working on STM32F767ZI Nucleo board, In this I am trying to interface external audio board through I2S interface, I configured I2S in Master receive mode using STM cubeMX, But I am not able to receive any data. I also cross checked signals on board , I2S_A_CK clock is coming (48K), but I2S_WS & I2S_SD(data) signals are not coming . Can you please tell me what could be the issue .

 

I2S configurations:

  hi2s2.Instance = SPI2;
  hi2s2.Init.Mode = I2S_MODE_MASTER_RX;
  hi2s2.Init.Standard = I2S_STANDARD_PHILIPS;
  hi2s2.Init.DataFormat = I2S_DATAFORMAT_24B;
  hi2s2.Init.MCLKOutput = I2S_MCLKOUTPUT_DISABLE;
  hi2s2.Init.AudioFreq = I2S_AUDIOFREQ_48K;
  hi2s2.Init.CPOL = I2S_CPOL_LOW;
  hi2s2.Init.ClockSource = I2S_CLOCK_PLL;

 

Receive function I am using :

HAL_I2S_Receive_IT(&hi2s2, I2S_Buffer_Rx, 100);

 

I hope I2S_CK & I2S_WS signal must generate , without these two signal audio board doesn't send any data. Can you please suggest if any changes required in above initialization.

 

 

Thank you

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