| LPCOpen Platform v1.03 LPCOpen Platform for NXP LPC Microcontrollers

- Main Page
- Modules
- Data Structures
- Files
- Related Pages

- File List
- Globals

All Data Structures Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
MIDIClassDevice.c
Go to the documentation of this file.
1 /*
2 * @brief Device mode driver for the library USB MIDI Class driver
3 *
4 * @note
5 * Copyright(C) NXP Semiconductors, 2012
6 * Copyright(C) Dean Camera, 2011, 2012
7 * All rights reserved.
8 *
9 * @par
10 * Software that is described herein is for illustrative purposes only
11 * which provides customers with programming information regarding the
12 * LPC products. This software is supplied "AS IS" without any warranties of
13 * any kind, and NXP Semiconductors and its licensor disclaim any and
14 * all warranties, express or implied, including all implied warranties of
15 * merchantability, fitness for a particular purpose and non-infringement of
16 * intellectual property rights. NXP Semiconductors assumes no responsibility
17 * or liability for the use of the software, conveys no license or rights under any
18 * patent, copyright, mask work right, or any other intellectual property rights in
19 * or to any products. NXP Semiconductors reserves the right to make changes
20 * in the software without notification. NXP Semiconductors also makes no
21 * representation or warranty that such application will be suitable for the
22 * specified use without further testing or modification.
23 *
24 * @par
25 * Permission to use, copy, modify, and distribute this software and its
26 * documentation is hereby granted, under NXP Semiconductors' and its
27 * licensor's relevant copyrights in the software, without fee, provided that it
28 * is used in conjunction with NXP Semiconductors microcontrollers. This
29 * copyright, permission, and disclaimer notice must appear in all copies of
30 * this code.
31 */
32
33
34 #define __INCLUDE_FROM_USB_DRIVER
35 #include "../../Core/USBMode.h"
36
37 #if defined(USB_CAN_BE_DEVICE)
38
39 #define __INCLUDE_FROM_MIDI_DRIVER
40 #define __INCLUDE_FROM_MIDI_DEVICE_C
41 #include "MIDIClassDevice.h"
42
43 bool MIDI_Device_ConfigureEndpoints(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo)
44 {
45 // memset(&MIDIInterfaceInfo->State, 0x00, sizeof(MIDIInterfaceInfo->State));
46
47 for (uint8_t EndpointNum = 1; EndpointNum < ENDPOINT_TOTAL_ENDPOINTS(MIDIInterfaceInfo->Config.PortNumber); EndpointNum++)
48 {
49 uint16_t Size;
50 uint8_t Type;
51 uint8_t Direction;
52 bool DoubleBanked;
53
54 if (EndpointNum == MIDIInterfaceInfo->Config.DataINEndpointNumber)
55 {
56 Size = MIDIInterfaceInfo->Config.DataINEndpointSize;
57 Direction = ENDPOINT_DIR_IN;
58 Type = EP_TYPE_BULK;
59 DoubleBanked = MIDIInterfaceInfo->Config.DataINEndpointDoubleBank;
60 }
61 else if (EndpointNum == MIDIInterfaceInfo->Config.DataOUTEndpointNumber)
62 {
63 Size = MIDIInterfaceInfo->Config.DataOUTEndpointSize;
64 Direction = ENDPOINT_DIR_OUT;
65 Type = EP_TYPE_BULK;
66 DoubleBanked = MIDIInterfaceInfo->Config.DataOUTEndpointDoubleBank;
67 }
68 else
69 {
70 continue;
71 }
72
73 if (!(Endpoint_ConfigureEndpoint(MIDIInterfaceInfo->Config.PortNumber, EndpointNum, Type, Direction, Size,
74 DoubleBanked ? ENDPOINT_BANK_DOUBLE : ENDPOINT_BANK_SINGLE)))
75 {
76 return false;
77 }
78 }
79
80 return true;
81 }
82
83 void MIDI_Device_USBTask(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo)
84 {
85 if (USB_DeviceState[MIDIInterfaceInfo->Config.PortNumber] != DEVICE_STATE_Configured)
86 return;
87
88 #if !defined(NO_CLASS_DRIVER_AUTOFLUSH)
89 MIDI_Device_Flush(MIDIInterfaceInfo);
90 #endif
91 }
92
93 uint8_t MIDI_Device_SendEventPacket(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo,
94 const MIDI_EventPacket_t* const Event)
95 {
96 if (USB_DeviceState[MIDIInterfaceInfo->Config.PortNumber] != DEVICE_STATE_Configured)
97 return ENDPOINT_RWSTREAM_DeviceDisconnected;
98
99 uint8_t ErrorCode;
100
101 Endpoint_SelectEndpoint(MIDIInterfaceInfo->Config.PortNumber, MIDIInterfaceInfo->Config.DataINEndpointNumber);
102
103 if ((ErrorCode = Endpoint_Write_Stream_LE(MIDIInterfaceInfo->Config.PortNumber, Event, sizeof(MIDI_EventPacket_t), NULL)) != ENDPOINT_RWSTREAM_NoError)
104 return ErrorCode;
105
106 if (!(Endpoint_IsReadWriteAllowed(MIDIInterfaceInfo->Config.PortNumber)))
107 Endpoint_ClearIN(MIDIInterfaceInfo->Config.PortNumber);
108
109 return ENDPOINT_RWSTREAM_NoError;
110 }
111
112 uint8_t MIDI_Device_Flush(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo)
113 {
114 if (USB_DeviceState[MIDIInterfaceInfo->Config.PortNumber] != DEVICE_STATE_Configured)
115 return ENDPOINT_RWSTREAM_DeviceDisconnected;
116
117 uint8_t ErrorCode;
118
119 Endpoint_SelectEndpoint(MIDIInterfaceInfo->Config.PortNumber, MIDIInterfaceInfo->Config.DataINEndpointNumber);
120
121 if (Endpoint_BytesInEndpoint(MIDIInterfaceInfo->Config.PortNumber))
122 {
123 Endpoint_ClearIN(MIDIInterfaceInfo->Config.PortNumber);
124
125 if ((ErrorCode = Endpoint_WaitUntilReady()) != ENDPOINT_READYWAIT_NoError)
126 return ErrorCode;
127 }
128
129 return ENDPOINT_READYWAIT_NoError;
130 }
131
132 bool MIDI_Device_ReceiveEventPacket(USB_ClassInfo_MIDI_Device_t* const MIDIInterfaceInfo,
133 MIDI_EventPacket_t* const Event)
134 {
135 if (USB_DeviceState[MIDIInterfaceInfo->Config.PortNumber] != DEVICE_STATE_Configured)
136 return false;
137
138 Endpoint_SelectEndpoint(MIDIInterfaceInfo->Config.PortNumber, MIDIInterfaceInfo->Config.DataOUTEndpointNumber);
139
140 if (!(Endpoint_IsReadWriteAllowed(MIDIInterfaceInfo->Config.PortNumber)))
141 return false;
142
143 Endpoint_Read_Stream_LE(MIDIInterfaceInfo->Config.PortNumber, Event, sizeof(MIDI_EventPacket_t), NULL);
144
145 if (!(Endpoint_IsReadWriteAllowed(MIDIInterfaceInfo->Config.PortNumber)))
146 Endpoint_ClearOUT(MIDIInterfaceInfo->Config.PortNumber);
147
148 return true;
149 }
150
151 #endif
152