How to store I2S data into SD card in STM32f407?

[Niyathi Shenoy]

Hi i have a Quad Ana log-to-Digital Converter (ADC)(ADAU1978). I have to interface the same with STM32F407 discovery board by using I2C. The output of the ADAU1978 quad ADC is in I2S mode . Now i want to store the I2S output data into SD card. How do i do the same? I have stored a simple .txt file into SD card using STM32F407 discovery board.