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library

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Blame information for rev 32

Line No. Rev Author Line
1 32 kaklik /********************************************************************************
2 File Information:
3 FileName: usb_function_audio.c
4 Dependencies: See INCLUDES section
5 Processor: PIC18 or PIC24 USB Microcontrollers
6 Hardware: The code is natively intended to be used on the following
7 hardware platforms: PICDEM™ FS USB Demo Board,
8 PIC18F87J50 FS USB Plug-In Module, or
9 Explorer 16 + PIC24 USB PIM. The firmware may be
10 modified for use on other USB platforms by editing the
11 HardwareProfile.h file.
12 Complier: Microchip C18 (for PIC18) or C30 (for PIC24)
13 Company: Microchip Technology, Inc.
14  
15 Software License Agreement:
16  
17 The software supplied herewith by Microchip Technology Incorporated
18 (the “Company”) for its PIC® Microcontroller is intended and
19 supplied to you, the Company’s customer, for use solely and
20 exclusively on Microchip PIC Microcontroller products. The
21 software is owned by the Company and/or its supplier, and is
22 protected under applicable copyright laws. All rights are reserved.
23 Any use in violation of the foregoing restrictions may subject the
24 user to criminal sanctions under applicable laws, as well as to
25 civil liability for the breach of the terms and conditions of this
26 license.
27  
28 THIS SOFTWARE IS PROVIDED IN AN “AS IS” CONDITION. NO WARRANTIES,
29 WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT NOT LIMITED
30 TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
31 PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. THE COMPANY SHALL NOT,
32 IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL OR
33 CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
34  
35 Summary:
36 This file contains all of functions, macros, definitions, variables,
37 datatypes, etc. that are required for usage with the Audio function
38 driver. This file should be included in projects that use the Audio
39 \function driver.
40  
41  
42  
43 This file is located in the "\<Install Directory\>\\Microchip\\USB\\Audio
44 Device Driver" directory.
45 Description:
46 USB Audio Function Driver File
47  
48 This file contains all of functions, macros, definitions, variables,
49 datatypes, etc. that are required for usage with the Audio function
50 driver. This file should be included in projects that use the Audio
51 \function driver.
52  
53 This file is located in the "\<Install Directory\>\\Microchip\\USB\\Audio
54 Device Driver" directory.
55  
56 When including this file in a new project, this file can either be
57 referenced from the directory in which it was installed or copied
58 directly into the user application folder. If the first method is
59 chosen to keep the file located in the folder in which it is installed
60 then include paths need to be added so that the library and the
61 application both know where to reference each others files. If the
62 application folder is located in the same folder as the Microchip
63 folder (like the current demo folders), then the following include
64 paths need to be added to the application's project:
65  
66  
67 ..\\..\\Include
68  
69 .
70  
71  
72 If a different directory structure is used, modify the paths as
73 required. An example using absolute paths instead of relative paths
74 would be the following:
75  
76 C:\\Microchip Solutions\\Microchip\\Include
77  
78 C:\\Microchip Solutions\\My Demo Application
79  
80 Change History:
81 Rev Description
82 ----- -----------
83 2.6- No change
84 2.7a
85 ********************************************************************************/
86  
87 /** I N C L U D E S *******************************************************/
88 #include "./USB/usb.h"
89 #include "./USB/usb_function_audio.h"
90  
91 #ifdef USB_USE_AUDIO_CLASS
92  
93 #if defined USB_AUDIO_TERMINAL_CONTROL_REQUESTS_HANDLER
94 void USB_AUDIO_TERMINAL_CONTROL_REQUESTS_HANDLER(void);
95 #endif
96  
97 #if defined USB_AUDIO_MIXER_UNIT_CONTROL_REQUESTS_HANDLER
98 void USB_AUDIO_MIXER_UNIT_CONTROL_REQUESTS_HANDLER(void);
99 #endif
100  
101 #if defined USB_AUDIO_SELECTOR_UNIT_CONTROL_REQUESTS_HANDLER
102 void USB_AUDIO_SELECTOR_UNIT_CONTROL_REQUESTS_HANDLER(void);
103 #endif
104  
105 #if defined USB_AUDIO_FEATURE_UNIT_CONTROL_REQUESTS_HANDLER
106 void USB_AUDIO_FEATURE_UNIT_CONTROL_REQUESTS_HANDLER(void);
107 #endif
108  
109 #if defined USB_AUDIO_PROCESSING_UNIT_CONTROL_REQUESTS_HANDLER
110 void USB_AUDIO_PROCESSING_UNIT_CONTROL_REQUESTS_HANDLER(void);
111 #endif
112  
113 #if defined USB_AUDIO_EXTENSION_UNIT_CONTROL_REQUESTS_HANDLER
114 void USB_AUDIO_EXTENSION_UNIT_CONTROL_REQUESTS_HANDLER(void);
115 #endif
116  
117 #if defined USB_AUDIO_INTRFACE_CONTROL_REQUESTS_HANDLER
118 void USB_AUDIO_INTRFACE_CONTROL_REQUESTS_HANDLER(void);
119 #endif
120  
121 #if defined USB_AUDIO_ENDPOINT_CONTROL_REQUESTS_HANDLER
122 void USB_AUDIO_ENDPOINT_CONTROL_REQUESTS_HANDLER(void);
123 #endif
124  
125 #if defined USB_AUDIO_MEMORY_REQUESTS_HANDLER
126 void USB_AUDIO_MEMORY_REQUESTS_HANDLER(void);
127 #endif
128  
129 #if defined USB_AUDIO_STATUS_REQUESTS_HANDLER
130 void USB_AUDIO_STATUS_REQUESTS_HANDLER(void);
131 #endif
132  
133  
134  
135 /** V A R I A B L E S ********************************************************/
136 unsigned char TempBuffer[8];
137  
138 /** C L A S S S P E C I F I C R E Q ****************************************/
139 /******************************************************************************
140 Function:
141 void USBCheckAudioRequest(void)
142  
143 Description:
144 This routine checks the setup data packet to see if it
145 knows how to handle it
146  
147 PreCondition:
148 None
149  
150 Parameters:
151 None
152  
153 Return Values:
154 None
155  
156 Remarks:
157 None
158  
159 *****************************************************************************/
160  
161 void USBCheckAudioRequest(void)
162 {
163 /*
164 * If request recipient is not an interface then return
165 */
166 if(SetupPkt.Recipient != USB_SETUP_RECIPIENT_INTERFACE_BITFIELD) return;
167 /*
168 * If request type is not class-specific then return
169 */
170 if(SetupPkt.RequestType != USB_SETUP_TYPE_CLASS_BITFIELD) return;
171 /*
172 * Interface ID must match interface numbers associated with
173 * Audio class, else return
174 */
175 if((SetupPkt.bIntfID != AUDIO_CONTROL_INTERFACE_ID)&&
176 (SetupPkt.bIntfID != AUDIO_STREAMING_INTERFACE_ID)) return;
177 switch(SetupPkt.W_Index.byte.HB)// checking for the Entity ID (Entity ID are defined in the config.h file)
178 {
179 case ID_INPUT_TERMINAL:
180 #if defined USB_AUDIO_INPUT_TERMINAL_CONTROL_REQUESTS_HANDLER
181 USB_AUDIO_INPUT_TERMINAL_CONTROL_REQUESTS_HANDLER();
182 #endif
183 break;
184 case ID_OUTPUT_TERMINAL:
185 #if defined USB_AUDIO_OUTPUT_TERMINAL_CONTROL_REQUESTS_HANDLER
186 USB_AUDIO_OUTPUT_TERMINAL_CONTROL_REQUESTS_HANDLER();
187 #endif
188 break;
189 case ID_MIXER_UNIT:
190 #if defined USB_AUDIO_MIXER_UNIT_CONTROL_REQUESTS_HANDLER
191 USB_AUDIO_MIXER_UNIT_CONTROL_REQUESTS_HANDLER();
192 #endif
193 break;
194 case ID_SELECTOR_UNIT:
195 #if defined USB_AUDIO_SELECTOR_UNIT_CONTROL_REQUESTS_HANDLER
196 USB_AUDIO_SELECTOR_UNIT_CONTROL_REQUESTS_HANDLER();
197 #endif
198 break;
199 case ID_FEATURE_UNIT:
200 #if defined USB_AUDIO_FEATURE_UNIT_CONTROL_REQUESTS_HANDLER
201 USB_AUDIO_FEATURE_UNIT_CONTROL_REQUESTS_HANDLER();
202 #endif
203 break;
204 case ID_PROCESSING_UNIT:
205 #if defined USB_AUDIO_PROCESSING_UNIT_CONTROL_REQUESTS_HANDLER
206 USB_AUDIO_PROCESSING_UNIT_CONTROL_REQUESTS_HANDLER();
207 #endif
208 break;
209 case ID_EXTENSION_UNIT:
210 #if defined USB_AUDIO_EXTENSION_UNIT_CONTROL_REQUESTS_HANDLER
211 USB_AUDIO_EXTENSION_UNIT_CONTROL_REQUESTS_HANDLER();
212 #endif
213 break;
214 default:
215 break;
216  
217 }//end switch(SetupPkt.bRequest
218 }//end USBCheckAudioRequest
219  
220 #endif
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