Radio Junk Box
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KAMUI_USBHOST_MIDI-CV_Example
KAMUI USB HOST MIDI-CV Example based on Peter Barrett's BlueUSB
MidiUSB.cpp@0:3b4e3e2ec6a5, 2012-05-11 (annotated)
- Committer:
- radiojunkbox
- Date:
- Fri May 11 15:31:59 2012 +0000
- Revision:
- 0:3b4e3e2ec6a5
Rev. 0.1 alfa
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
radiojunkbox | 0:3b4e3e2ec6a5 | 1 | |
radiojunkbox | 0:3b4e3e2ec6a5 | 2 | /* |
radiojunkbox | 0:3b4e3e2ec6a5 | 3 | Copyright (c) 2012 RadioJunkBox |
radiojunkbox | 0:3b4e3e2ec6a5 | 4 | |
radiojunkbox | 0:3b4e3e2ec6a5 | 5 | Permission is hereby granted, free of charge, to any person obtaining a copy |
radiojunkbox | 0:3b4e3e2ec6a5 | 6 | of this software and associated documentation files (the "Software"), to deal |
radiojunkbox | 0:3b4e3e2ec6a5 | 7 | in the Software without restriction, including without limitation the rights |
radiojunkbox | 0:3b4e3e2ec6a5 | 8 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
radiojunkbox | 0:3b4e3e2ec6a5 | 9 | copies of the Software, and to permit persons to whom the Software is |
radiojunkbox | 0:3b4e3e2ec6a5 | 10 | furnished to do so, subject to the following conditions: |
radiojunkbox | 0:3b4e3e2ec6a5 | 11 | |
radiojunkbox | 0:3b4e3e2ec6a5 | 12 | The above copyright notice and this permission notice shall be included in |
radiojunkbox | 0:3b4e3e2ec6a5 | 13 | all copies or substantial portions of the Software. |
radiojunkbox | 0:3b4e3e2ec6a5 | 14 | |
radiojunkbox | 0:3b4e3e2ec6a5 | 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
radiojunkbox | 0:3b4e3e2ec6a5 | 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
radiojunkbox | 0:3b4e3e2ec6a5 | 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
radiojunkbox | 0:3b4e3e2ec6a5 | 18 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
radiojunkbox | 0:3b4e3e2ec6a5 | 19 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
radiojunkbox | 0:3b4e3e2ec6a5 | 20 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
radiojunkbox | 0:3b4e3e2ec6a5 | 21 | THE SOFTWARE. |
radiojunkbox | 0:3b4e3e2ec6a5 | 22 | */ |
radiojunkbox | 0:3b4e3e2ec6a5 | 23 | |
radiojunkbox | 0:3b4e3e2ec6a5 | 24 | #include "mbed.h" |
radiojunkbox | 0:3b4e3e2ec6a5 | 25 | #include "USBHost.h" |
radiojunkbox | 0:3b4e3e2ec6a5 | 26 | #include "Utils.h" |
radiojunkbox | 0:3b4e3e2ec6a5 | 27 | |
radiojunkbox | 0:3b4e3e2ec6a5 | 28 | #define MIDIEVT(_class,_subclass,_protocol) (((_class) << 16) | ((_subclass) << 8) | _protocol) |
radiojunkbox | 0:3b4e3e2ec6a5 | 29 | u8 ms_buf[255]; // MIDI Streaming Buffer |
radiojunkbox | 0:3b4e3e2ec6a5 | 30 | |
radiojunkbox | 0:3b4e3e2ec6a5 | 31 | // Ring Buffer |
radiojunkbox | 0:3b4e3e2ec6a5 | 32 | #define BUFSIZE 32 // size of ring buffer (ex 4,8,16,32...) |
radiojunkbox | 0:3b4e3e2ec6a5 | 33 | extern int gPtr_buf_in, gPtr_buf_out; |
radiojunkbox | 0:3b4e3e2ec6a5 | 34 | extern unsigned char gRxBuf[]; |
radiojunkbox | 0:3b4e3e2ec6a5 | 35 | |
radiojunkbox | 0:3b4e3e2ec6a5 | 36 | // Received MIDI Steram |
radiojunkbox | 0:3b4e3e2ec6a5 | 37 | void MidiEventCallback(int device, int endpoint, int status, u8* data, int len, void* userData) |
radiojunkbox | 0:3b4e3e2ec6a5 | 38 | { |
radiojunkbox | 0:3b4e3e2ec6a5 | 39 | int i; |
radiojunkbox | 0:3b4e3e2ec6a5 | 40 | int ptr = 0; |
radiojunkbox | 0:3b4e3e2ec6a5 | 41 | |
radiojunkbox | 0:3b4e3e2ec6a5 | 42 | while((data[ptr] != 0) && (ptr < len)) |
radiojunkbox | 0:3b4e3e2ec6a5 | 43 | { |
radiojunkbox | 0:3b4e3e2ec6a5 | 44 | // printf("MIDI %02X %02X %02X",device,status,len); |
radiojunkbox | 0:3b4e3e2ec6a5 | 45 | // printfBytes("",data,4); |
radiojunkbox | 0:3b4e3e2ec6a5 | 46 | for( i = 1; i<4; i++) |
radiojunkbox | 0:3b4e3e2ec6a5 | 47 | { |
radiojunkbox | 0:3b4e3e2ec6a5 | 48 | gPtr_buf_in++; |
radiojunkbox | 0:3b4e3e2ec6a5 | 49 | gPtr_buf_in &= (BUFSIZE - 1); |
radiojunkbox | 0:3b4e3e2ec6a5 | 50 | gRxBuf[gPtr_buf_in] = data[ptr+i]; |
radiojunkbox | 0:3b4e3e2ec6a5 | 51 | } |
radiojunkbox | 0:3b4e3e2ec6a5 | 52 | ptr+=4; |
radiojunkbox | 0:3b4e3e2ec6a5 | 53 | } |
radiojunkbox | 0:3b4e3e2ec6a5 | 54 | USBBulkTransfer(device,endpoint,data,len,MidiEventCallback,userData); |
radiojunkbox | 0:3b4e3e2ec6a5 | 55 | } |
radiojunkbox | 0:3b4e3e2ec6a5 | 56 | |
radiojunkbox | 0:3b4e3e2ec6a5 | 57 | // Add MIDI Interface |
radiojunkbox | 0:3b4e3e2ec6a5 | 58 | void AddMidiInterface(int device, InterfaceDescriptor* id, EndpointDescriptor* ed,int len) |
radiojunkbox | 0:3b4e3e2ec6a5 | 59 | { |
radiojunkbox | 0:3b4e3e2ec6a5 | 60 | if ((ed->bmAttributes & 3) != ENDPOINT_BULK || !(ed->bEndpointAddress & 0x80)) |
radiojunkbox | 0:3b4e3e2ec6a5 | 61 | return; |
radiojunkbox | 0:3b4e3e2ec6a5 | 62 | |
radiojunkbox | 0:3b4e3e2ec6a5 | 63 | // Make bulk enpoints for MIDI devices |
radiojunkbox | 0:3b4e3e2ec6a5 | 64 | u32 evt = MIDIEVT(id->bInterfaceClass,id->bInterfaceSubClass,id->bInterfaceProtocol); |
radiojunkbox | 0:3b4e3e2ec6a5 | 65 | u8* dst = ms_buf; |
radiojunkbox | 0:3b4e3e2ec6a5 | 66 | |
radiojunkbox | 0:3b4e3e2ec6a5 | 67 | if(dst) |
radiojunkbox | 0:3b4e3e2ec6a5 | 68 | { |
radiojunkbox | 0:3b4e3e2ec6a5 | 69 | // printf("Add Midi Interface %02X %08X\r\n",ed->bEndpointAddress,evt); |
radiojunkbox | 0:3b4e3e2ec6a5 | 70 | USBBulkTransfer(device,ed->bEndpointAddress,dst,len,MidiEventCallback,(void*)evt); |
radiojunkbox | 0:3b4e3e2ec6a5 | 71 | } |
radiojunkbox | 0:3b4e3e2ec6a5 | 72 | } |
radiojunkbox | 0:3b4e3e2ec6a5 | 73 | |
radiojunkbox | 0:3b4e3e2ec6a5 | 74 | // Detected Midi Device |
radiojunkbox | 0:3b4e3e2ec6a5 | 75 | int OnMidiInsert(int device) |
radiojunkbox | 0:3b4e3e2ec6a5 | 76 | { |
radiojunkbox | 0:3b4e3e2ec6a5 | 77 | u8 buffer[255]; |
radiojunkbox | 0:3b4e3e2ec6a5 | 78 | int err = GetDescriptor(device,DESCRIPTOR_TYPE_CONFIGURATION,0,buffer,255); |
radiojunkbox | 0:3b4e3e2ec6a5 | 79 | if (err < 0) |
radiojunkbox | 0:3b4e3e2ec6a5 | 80 | return err; |
radiojunkbox | 0:3b4e3e2ec6a5 | 81 | |
radiojunkbox | 0:3b4e3e2ec6a5 | 82 | int len = buffer[2] | (buffer[3] << 8); |
radiojunkbox | 0:3b4e3e2ec6a5 | 83 | u8* d = buffer; |
radiojunkbox | 0:3b4e3e2ec6a5 | 84 | u8* end = d + len; |
radiojunkbox | 0:3b4e3e2ec6a5 | 85 | |
radiojunkbox | 0:3b4e3e2ec6a5 | 86 | // printf("OnMidiInsert %02X %02X\r\n",device,len); |
radiojunkbox | 0:3b4e3e2ec6a5 | 87 | |
radiojunkbox | 0:3b4e3e2ec6a5 | 88 | while (d < end) |
radiojunkbox | 0:3b4e3e2ec6a5 | 89 | { |
radiojunkbox | 0:3b4e3e2ec6a5 | 90 | if (d[1] == DESCRIPTOR_TYPE_INTERFACE) |
radiojunkbox | 0:3b4e3e2ec6a5 | 91 | { |
radiojunkbox | 0:3b4e3e2ec6a5 | 92 | InterfaceDescriptor* id = (InterfaceDescriptor*)d; |
radiojunkbox | 0:3b4e3e2ec6a5 | 93 | d += d[0]; |
radiojunkbox | 0:3b4e3e2ec6a5 | 94 | while (d < end) |
radiojunkbox | 0:3b4e3e2ec6a5 | 95 | { |
radiojunkbox | 0:3b4e3e2ec6a5 | 96 | if (d[1] == DESCRIPTOR_TYPE_ENDPOINT) |
radiojunkbox | 0:3b4e3e2ec6a5 | 97 | { |
radiojunkbox | 0:3b4e3e2ec6a5 | 98 | // printfBytes("MIDI Endpoint",d,d[0]); |
radiojunkbox | 0:3b4e3e2ec6a5 | 99 | AddMidiInterface(device,id,(EndpointDescriptor*)d,d[4]); |
radiojunkbox | 0:3b4e3e2ec6a5 | 100 | } |
radiojunkbox | 0:3b4e3e2ec6a5 | 101 | d += d[0]; |
radiojunkbox | 0:3b4e3e2ec6a5 | 102 | } |
radiojunkbox | 0:3b4e3e2ec6a5 | 103 | } |
radiojunkbox | 0:3b4e3e2ec6a5 | 104 | d += d[0]; |
radiojunkbox | 0:3b4e3e2ec6a5 | 105 | } |
radiojunkbox | 0:3b4e3e2ec6a5 | 106 | return 0; |
radiojunkbox | 0:3b4e3e2ec6a5 | 107 | } |