I am making a SDR and implementing FM demodulation over it. We chose STM32F4 controllers for our applications yet we are successful in receiving the signal till the DAC's output.
Yet I am still required to make this board more fruitful to us by introducing like a USB Microphone device. It just transmits the data to the host as an audio device just like a microphone do. Please help me in making my project complete. I am using KEIL uVision for ARM.
Continuous Data -> DMA -> USB Buffer -> USB Audio Class -> Detected as USB Microphone on PC.