88 lines
3.7 KiB
C++
88 lines
3.7 KiB
C++
/*
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*******************************************************************************
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* USB-MIDI class driver for USB Host Shield 2.0 Library
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* Copyright (c) 2012-2017 Yuuichi Akagawa
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*
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* Idea from LPK25 USB-MIDI to Serial MIDI converter
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* by Collin Cunningham - makezine.com, narbotic.com
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*
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* for use with USB Host Shield 2.0 from Circuitsathome.com
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* https://github.com/felis/USB_Host_Shield_2.0
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*******************************************************************************
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*******************************************************************************
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*/
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#if !defined(_USBH_MIDI_H_)
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#define _USBH_MIDI_H_
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//#define DEBUG_USB_HOST
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#include "Usb.h"
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#define MIDI_MAX_ENDPOINTS 5 //endpoint 0, bulk_IN(MIDI), bulk_OUT(MIDI), bulk_IN(VSP), bulk_OUT(VSP)
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#define USB_SUBCLASS_MIDISTREAMING 3
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#define DESC_BUFF_SIZE 256
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#define MIDI_EVENT_PACKET_SIZE 64
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#define MIDI_MAX_SYSEX_SIZE 256
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class USBH_MIDI;
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class USBH_MIDI : public USBDeviceConfig
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{
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protected:
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static const uint8_t epDataInIndex; // DataIn endpoint index(MIDI)
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static const uint8_t epDataOutIndex; // DataOUT endpoint index(MIDI)
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static const uint8_t epDataInIndexVSP; // DataIn endpoint index(Vendor Specific Protocl)
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static const uint8_t epDataOutIndexVSP; // DataOUT endpoint index(Vendor Specific Protocl)
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/* mandatory members */
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USB *pUsb;
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uint8_t bAddress;
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uint8_t bConfNum; // configuration number
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uint8_t bNumEP; // total number of EP in the configuration
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bool bPollEnable;
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bool isMidiFound;
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/* Endpoint data structure */
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EpInfo epInfo[MIDI_MAX_ENDPOINTS];
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/* MIDI Event packet buffer */
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uint8_t recvBuf[MIDI_EVENT_PACKET_SIZE];
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uint8_t readPtr;
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uint8_t parseConfigDescr(uint8_t addr, uint8_t conf);
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uint16_t countSysExDataSize(uint8_t *dataptr);
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#ifdef DEBUG_USB_HOST
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void PrintEndpointDescriptor( const USB_ENDPOINT_DESCRIPTOR* ep_ptr );
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#endif
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public:
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uint16_t pid, vid;
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USBH_MIDI(USB *p);
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// Methods for recieving and sending data
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uint8_t RecvData(uint16_t *bytes_rcvd, uint8_t *dataptr);
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uint8_t RecvData(uint8_t *outBuf, bool isRaw=false);
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uint8_t RecvRawData(uint8_t *outBuf);
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uint8_t SendData(uint8_t *dataptr, uint8_t nCable=0);
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uint8_t lookupMsgSize(uint8_t midiMsg, uint8_t cin=0);
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uint8_t SendSysEx(uint8_t *dataptr, uint16_t datasize, uint8_t nCable=0);
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uint8_t extractSysExData(uint8_t *p, uint8_t *buf);
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uint8_t SendRawData(uint16_t bytes_send, uint8_t *dataptr);
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// backward compatibility functions
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inline uint8_t RcvData(uint16_t *bytes_rcvd, uint8_t *dataptr){ return RecvData(bytes_rcvd, dataptr); };
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inline uint8_t RcvData(uint8_t *outBuf){ return RecvData(outBuf); };
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// USBDeviceConfig implementation
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virtual uint8_t Init(uint8_t parent, uint8_t port, bool lowspeed);
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virtual uint8_t Release();
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virtual uint8_t GetAddress() { return bAddress; };
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};
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#endif //_USBH_MIDI_H_
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