usbd_audio_if.h File Reference

Header for usbd_audio_if.c file. More...

#include "usbd_audio_in.h" #include "cube_hal.h"

Go to the source code of this file.

Functions
void	Send_Audio_to_USB (int16_t *audioData, uint16_t PCMSamples)
	Fills USB audio buffer with the right amount of data, depending on the channel/frequency configuration. More...

Detailed Description

Header for usbd_audio_if.c file.

Author

Central Labs

Version

V1.1.0

Date

11-Jan-2016

Attention

© COPYRIGHT(c) 2014 STMicroelectronics

Licensed under MCD-ST Liberty SW License Agreement V2, (the "License"); You may not use this file except in compliance with the License. You may obtain a copy of the License at:

   http://www.st.com/software_license_agreement_liberty_v2

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
3. Neither the name of STMicroelectronics nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

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Definition in file usbd_audio_if.h.

Function Documentation

Send_Audio_to_USB()

void Send_Audio_to_USB	(	int16_t *	audioData,
		uint16_t	PCMSamples
	)

Fills USB audio buffer with the right amount of data, depending on the channel/frequency configuration.

Parameters

audioData	pointer to the PCM audio data
PCMSamples	number of PCM samples to be passed to USB engine

Note

Depending on the calling frequency, a coherent amount of samples must be passed to the function. E.g.: assuming a Sampling frequency of 16 KHz and 1 channel, you can pass 16 PCM samples if the function is called each millisecond, 32 samples if called every 2 milliseconds and so on.

Definition at line 183 of file usbd_audio_if.c.