STM32 PDM Interfacing with DFSDM Nucleo-L476RG

[sarahsd0109]

I'm trying to use a STM32 Nucleo-L476RG to get audio from a PDM MEMs Microphone (Infineon IM66D120A) using DFSDM and save the audio to an SD Card. I'm able to write to the SD card using SPI but I'm not able to get any usable audio recorded onto the SD card just static. I've attached the WAV file. I know I'm getting data from the microphone because I can see it on the scope. I have attached the code I'm using right now. Any Ideas?