/********************************************************************************
File Information:
FileName: usb_function_audio.c
Dependencies: See INCLUDES section
Processor: PIC18 or PIC24 USB Microcontrollers
Hardware: The code is natively intended to be used on the following
hardware platforms: PICDEM FS USB Demo Board,
PIC18F87J50 FS USB Plug-In Module, or
Explorer 16 + PIC24 USB PIM. The firmware may be
modified for use on other USB platforms by editing the
HardwareProfile.h file.
Complier: Microchip C18 (for PIC18) or C30 (for PIC24)
Company: Microchip Technology, Inc.
Software License Agreement:
The software supplied herewith by Microchip Technology Incorporated
(the Company) for its PIC® Microcontroller is intended and
supplied to you, the Companys customer, for use solely and
exclusively on Microchip PIC Microcontroller products. The
software is owned by the Company and/or its supplier, and is
protected under applicable copyright laws. All rights are reserved.
Any use in violation of the foregoing restrictions may subject the
user to criminal sanctions under applicable laws, as well as to
civil liability for the breach of the terms and conditions of this
license.
THIS SOFTWARE IS PROVIDED IN AN AS IS CONDITION. NO WARRANTIES,
WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT NOT LIMITED
TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. THE COMPANY SHALL NOT,
IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL OR
CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
Summary:
This file contains all of functions, macros, definitions, variables,
datatypes, etc. that are required for usage with the Audio function
driver. This file should be included in projects that use the Audio
\function driver.
This file is located in the "\<Install Directory\>\\Microchip\\USB\\Audio
Device Driver" directory.
Description:
USB Audio Function Driver File
This file contains all of functions, macros, definitions, variables,
datatypes, etc. that are required for usage with the Audio function
driver. This file should be included in projects that use the Audio
\function driver.
This file is located in the "\<Install Directory\>\\Microchip\\USB\\Audio
Device Driver" directory.
When including this file in a new project, this file can either be
referenced from the directory in which it was installed or copied
directly into the user application folder. If the first method is
chosen to keep the file located in the folder in which it is installed
then include paths need to be added so that the library and the
application both know where to reference each others files. If the
application folder is located in the same folder as the Microchip
folder (like the current demo folders), then the following include
paths need to be added to the application's project:
..\\..\\Include
.
If a different directory structure is used, modify the paths as
required. An example using absolute paths instead of relative paths
would be the following:
C:\\Microchip Solutions\\Microchip\\Include
C:\\Microchip Solutions\\My Demo Application
Change History:
Rev Description
----- -----------
2.6- No change
2.7a
********************************************************************************/
/** I N C L U D E S *******************************************************/
#include "./USB/usb.h"
#include "./USB/usb_function_audio.h"
#ifdef USB_USE_AUDIO_CLASS
#if defined USB_AUDIO_TERMINAL_CONTROL_REQUESTS_HANDLER
void USB_AUDIO_TERMINAL_CONTROL_REQUESTS_HANDLER(void);
#endif
#if defined USB_AUDIO_MIXER_UNIT_CONTROL_REQUESTS_HANDLER
void USB_AUDIO_MIXER_UNIT_CONTROL_REQUESTS_HANDLER(void);
#endif
#if defined USB_AUDIO_SELECTOR_UNIT_CONTROL_REQUESTS_HANDLER
void USB_AUDIO_SELECTOR_UNIT_CONTROL_REQUESTS_HANDLER(void);
#endif
#if defined USB_AUDIO_FEATURE_UNIT_CONTROL_REQUESTS_HANDLER
void USB_AUDIO_FEATURE_UNIT_CONTROL_REQUESTS_HANDLER(void);
#endif
#if defined USB_AUDIO_PROCESSING_UNIT_CONTROL_REQUESTS_HANDLER
void USB_AUDIO_PROCESSING_UNIT_CONTROL_REQUESTS_HANDLER(void);
#endif
#if defined USB_AUDIO_EXTENSION_UNIT_CONTROL_REQUESTS_HANDLER
void USB_AUDIO_EXTENSION_UNIT_CONTROL_REQUESTS_HANDLER(void);
#endif
#if defined USB_AUDIO_INTRFACE_CONTROL_REQUESTS_HANDLER
void USB_AUDIO_INTRFACE_CONTROL_REQUESTS_HANDLER(void);
#endif
#if defined USB_AUDIO_ENDPOINT_CONTROL_REQUESTS_HANDLER
void USB_AUDIO_ENDPOINT_CONTROL_REQUESTS_HANDLER(void);
#endif
#if defined USB_AUDIO_MEMORY_REQUESTS_HANDLER
void USB_AUDIO_MEMORY_REQUESTS_HANDLER(void);
#endif
#if defined USB_AUDIO_STATUS_REQUESTS_HANDLER
void USB_AUDIO_STATUS_REQUESTS_HANDLER(void);
#endif
/** V A R I A B L E S ********************************************************/
unsigned char TempBuffer[8];
/** C L A S S S P E C I F I C R E Q ****************************************/
/******************************************************************************
Function:
void USBCheckAudioRequest(void)
Description:
This routine checks the setup data packet to see if it
knows how to handle it
PreCondition:
None
Parameters:
None
Return Values:
None
Remarks:
None
*****************************************************************************/
void USBCheckAudioRequest(void)
{
/*
* If request recipient is not an interface then return
*/
if(SetupPkt.Recipient != USB_SETUP_RECIPIENT_INTERFACE_BITFIELD) return;
/*
* If request type is not class-specific then return
*/
if(SetupPkt.RequestType != USB_SETUP_TYPE_CLASS_BITFIELD) return;
/*
* Interface ID must match interface numbers associated with
* Audio class, else return
*/
if((SetupPkt.bIntfID != AUDIO_CONTROL_INTERFACE_ID)&&
(SetupPkt.bIntfID != AUDIO_STREAMING_INTERFACE_ID)) return;
switch(SetupPkt.W_Index.byte.HB)// checking for the Entity ID (Entity ID are defined in the config.h file)
{
case ID_INPUT_TERMINAL:
#if defined USB_AUDIO_INPUT_TERMINAL_CONTROL_REQUESTS_HANDLER
USB_AUDIO_INPUT_TERMINAL_CONTROL_REQUESTS_HANDLER();
#endif
break;
case ID_OUTPUT_TERMINAL:
#if defined USB_AUDIO_OUTPUT_TERMINAL_CONTROL_REQUESTS_HANDLER
USB_AUDIO_OUTPUT_TERMINAL_CONTROL_REQUESTS_HANDLER();
#endif
break;
case ID_MIXER_UNIT:
#if defined USB_AUDIO_MIXER_UNIT_CONTROL_REQUESTS_HANDLER
USB_AUDIO_MIXER_UNIT_CONTROL_REQUESTS_HANDLER();
#endif
break;
case ID_SELECTOR_UNIT:
#if defined USB_AUDIO_SELECTOR_UNIT_CONTROL_REQUESTS_HANDLER
USB_AUDIO_SELECTOR_UNIT_CONTROL_REQUESTS_HANDLER();
#endif
break;
case ID_FEATURE_UNIT:
#if defined USB_AUDIO_FEATURE_UNIT_CONTROL_REQUESTS_HANDLER
USB_AUDIO_FEATURE_UNIT_CONTROL_REQUESTS_HANDLER();
#endif
break;
case ID_PROCESSING_UNIT:
#if defined USB_AUDIO_PROCESSING_UNIT_CONTROL_REQUESTS_HANDLER
USB_AUDIO_PROCESSING_UNIT_CONTROL_REQUESTS_HANDLER();
#endif
break;
case ID_EXTENSION_UNIT:
#if defined USB_AUDIO_EXTENSION_UNIT_CONTROL_REQUESTS_HANDLER
USB_AUDIO_EXTENSION_UNIT_CONTROL_REQUESTS_HANDLER();
#endif
break;
default:
break;
}//end switch(SetupPkt.bRequest
}//end USBCheckAudioRequest
#endif
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