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MIDI driver v0.6.0

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Yuuichi Akagawa 2021-05-10 00:06:47 +09:00
parent 205009d2be
commit 9b754a8a09
8 changed files with 334 additions and 300 deletions
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2
README.md
View file

@ -355,7 +355,7 @@ You can convert USB MIDI keyboard to legacy serial MIDI.
* [USB_MIDI_converter.ino](examples/USBH_MIDI/USB_MIDI_converter/USB_MIDI_converter.ino)
* [USB_MIDI_converter_multi.ino](examples/USBH_MIDI/USB_MIDI_converter_multi/USB_MIDI_converter_multi.ino)
For information see the following page: <http://yuuichiakagawa.github.io/USBH_MIDI/>.
For more information see : <https://github.com/YuuichiAkagawa/USBH_MIDI>.
### [amBX Library](AMBX.cpp)

41
examples/USBH_MIDI/USBH_MIDI_dump/USBH_MIDI_dump.ino
View file

@ -1,7 +1,7 @@
/*
*******************************************************************************
* USB-MIDI dump utility
* Copyright (C) 2013-2017 Yuuichi Akagawa
* Copyright (C) 2013-2021 Yuuichi Akagawa
*
* for use with USB Host Shield 2.0 from Circuitsathome.com
* https://github.com/felis/USB_Host_Shield_2.0
@ -13,35 +13,37 @@
#include <usbh_midi.h>
#include <usbhub.h>
// Satisfy the IDE, which needs to see the include statment in the ino too.
#ifdef dobogusinclude
#include <spi4teensy3.h>
#endif
#include <SPI.h>
USB Usb;
//USBHub Hub(&Usb);
USBHub Hub(&Usb);
USBH_MIDI Midi(&Usb);
void MIDI_poll();
uint16_t pid, vid;
void onInit()
{
char buf[20];
uint16_t vid = Midi.idVendor();
uint16_t pid = Midi.idProduct();
sprintf(buf, "VID:%04X, PID:%04X", vid, pid);
Serial.println(buf);
}
void setup()
{
vid = pid = 0;
Serial.begin(115200);
if (Usb.Init() == -1) {
while (1); //halt
}//if (Usb.Init() == -1...
delay( 200 );
// Register onInit() function
Midi.attachOnInit(onInit);
}
void loop()
{
Usb.Task();
//uint32_t t1 = (uint32_t)micros();
if ( Midi ) {
MIDI_poll();
}
@ -50,23 +52,16 @@ void loop()
// Poll USB MIDI Controler and send to serial MIDI
void MIDI_poll()
{
char buf[20];
uint8_t bufMidi[64];
char buf[16];
uint8_t bufMidi[MIDI_EVENT_PACKET_SIZE];
uint16_t rcvd;
if (Midi.idVendor() != vid || Midi.idProduct() != pid) {
vid = Midi.idVendor();
pid = Midi.idProduct();
sprintf(buf, "VID:%04X, PID:%04X", vid, pid);
Serial.println(buf);
}
if (Midi.RecvData( &rcvd, bufMidi) == 0 ) {
uint32_t time = (uint32_t)millis();
sprintf(buf, "%04X%04X: ", (uint16_t)(time >> 16), (uint16_t)(time & 0xFFFF)); // Split variable to prevent warnings on the ESP8266 platform
sprintf(buf, "%04X%04X:%3d:", (uint16_t)(time >> 16), (uint16_t)(time & 0xFFFF), rcvd); // Split variable to prevent warnings on the ESP8266 platform
Serial.print(buf);
Serial.print(rcvd);
Serial.print(':');
for (int i = 0; i < 64; i++) {
for (int i = 0; i < MIDI_EVENT_PACKET_SIZE; i++) {
sprintf(buf, " %02X", bufMidi[i]);
Serial.print(buf);
}

26
examples/USBH_MIDI/USB_MIDI_converter/USB_MIDI_converter.ino
View file

@ -1,7 +1,7 @@
/*
*******************************************************************************
* USB-MIDI to Legacy Serial MIDI converter
* Copyright (C) 2012-2020 Yuuichi Akagawa
* Copyright (C) 2012-2021 Yuuichi Akagawa
*
* Idea from LPK25 USB-MIDI to Serial MIDI converter
* by Collin Cunningham - makezine.com, narbotic.com
@ -13,12 +13,6 @@
#include <usbh_midi.h>
#include <usbhub.h>
// Satisfy the IDE, which needs to see the include statment in the ino too.
#ifdef dobogusinclude
#include <spi4teensy3.h>
#endif
#include <SPI.h>
#ifdef USBCON
#define _MIDI_SERIAL_PORT Serial1
#else
@ -40,7 +34,6 @@ USB Usb;
USBH_MIDI Midi(&Usb);
void MIDI_poll();
void doDelay(uint32_t t1, uint32_t t2, uint32_t delayTime);
void setup()
{
@ -55,12 +48,12 @@ void setup()
void loop()
{
Usb.Task();
uint32_t t1 = (uint32_t)micros();
if ( Midi ) {
MIDI_poll();
}
//delay(1ms)
doDelay(t1, (uint32_t)micros(), 1000);
//delay(1ms) if you want
//delayMicroseconds(1000);
}
// Poll USB MIDI Controler and send to serial MIDI
@ -79,14 +72,3 @@ void MIDI_poll()
}
} while (size > 0);
}
// Delay time (max 16383 us)
void doDelay(uint32_t t1, uint32_t t2, uint32_t delayTime)
{
uint32_t t3;
t3 = t2 - t1;
if ( t3 < delayTime ) {
delayMicroseconds(delayTime - t3);
}
}

17
examples/USBH_MIDI/USB_MIDI_converter_multi/USB_MIDI_converter_multi.ino
View file

@ -1,7 +1,7 @@
/*
*******************************************************************************
* USB-MIDI to Legacy Serial MIDI converter
* Copyright (C) 2012-2020 Yuuichi Akagawa
* Copyright (C) 2012-2021 Yuuichi Akagawa
*
* Idea from LPK25 USB-MIDI to Serial MIDI converter
* by Collin Cunningham - makezine.com, narbotic.com
@ -13,12 +13,6 @@
#include <usbh_midi.h>
#include <usbhub.h>
// Satisfy the IDE, which needs to see the include statment in the ino too.
#ifdef dobogusinclude
#include <spi4teensy3.h>
#endif
#include <SPI.h>
#ifdef USBCON
#define _MIDI_SERIAL_PORT Serial1
#else
@ -41,8 +35,7 @@ USBHub Hub1(&Usb);
USBH_MIDI Midi1(&Usb);
USBH_MIDI Midi2(&Usb);
void MIDI_poll();
void doDelay(uint32_t t1, uint32_t t2, uint32_t delayTime);
void MIDI_poll(USBH_MIDI &Midi);
void setup()
{
@ -57,15 +50,15 @@ void setup()
void loop()
{
Usb.Task();
uint32_t t1 = (uint32_t)micros();
if ( Midi1 ) {
MIDI_poll(Midi1);
}
if ( Midi2 ) {
MIDI_poll(Midi2);
}
//delay(1ms)
doDelay(t1, (uint32_t)micros(), 1000);
//delay(1ms) if you want
//delayMicroseconds(1000);
}
// Poll USB MIDI Controler and send to serial MIDI

7
examples/USBH_MIDI/bidirectional_converter/bidirectional_converter.ino
View file

@ -16,12 +16,6 @@
#include <usbh_midi.h>
#include <usbhub.h>
// Satisfy the IDE, which needs to see the include statment in the ino too.
#ifdef dobogusinclude
#include <spi4teensy3.h>
#endif
#include <SPI.h>
//Arduino MIDI library v4.2 compatibility
#ifdef MIDI_CREATE_DEFAULT_INSTANCE
MIDI_CREATE_DEFAULT_INSTANCE();
@ -44,7 +38,6 @@ MIDI_CREATE_DEFAULT_INSTANCE();
//////////////////////////
USB Usb;
//USBHub Hub1(&Usb);
USBH_MIDI Midi(&Usb);
void MIDI_poll();

29
examples/USBH_MIDI/eVY1_sample/eVY1_sample.ino
View file

@ -1,7 +1,7 @@
/*
*******************************************************************************
* eVY1 Shield sample - Say 'Konnichiwa'
* Copyright (C) 2014-2016 Yuuichi Akagawa
* Copyright (C) 2014-2021 Yuuichi Akagawa
*
* This is sample program. Do not expect perfect behavior.
*******************************************************************************
@ -9,12 +9,6 @@
#include <usbh_midi.h>
#include <usbhub.h>
// Satisfy the IDE, which needs to see the include statment in the ino too.
#ifdef dobogusinclude
#include <spi4teensy3.h>
#endif
#include <SPI.h>
USB Usb;
//USBHub Hub(&Usb);
USBH_MIDI Midi(&Usb);
@ -23,7 +17,6 @@ void MIDI_poll();
void noteOn(uint8_t note);
void noteOff(uint8_t note);
uint16_t pid, vid;
uint8_t exdata[] = {
0xf0, 0x43, 0x79, 0x09, 0x00, 0x50, 0x10,
'k', ' ', 'o', ',', //Ko
@ -34,15 +27,22 @@ uint8_t exdata[] = {
0x00, 0xf7
};
void onInit()
{
// Send Phonetic symbols via SysEx
Midi.SendSysEx(exdata, sizeof(exdata));
delay(500);
}
void setup()
{
vid = pid = 0;
Serial.begin(115200);
if (Usb.Init() == -1) {
while (1); //halt
}//if (Usb.Init() == -1...
delay( 200 );
// Register onInit() function
Midi.attachOnInit(onInit);
}
void loop()
@ -61,13 +61,6 @@ void loop()
void MIDI_poll()
{
uint8_t inBuf[ 3 ];
//first call?
if (Midi.idVendor() != vid || Midi.idProduct() != pid) {
vid = Midi.idVendor(); pid = Midi.idProduct();
Midi.SendSysEx(exdata, sizeof(exdata));
delay(500);
}
Midi.RecvData(inBuf);
}

424
usbh_midi.cpp
View file

@ -1,7 +1,7 @@
/*
*******************************************************************************
* USB-MIDI class driver for USB Host Shield 2.0 Library
* Copyright (c) 2012-2018 Yuuichi Akagawa
* Copyright (c) 2012-2021 Yuuichi Akagawa
*
* Idea from LPK25 USB-MIDI to Serial MIDI converter
* by Collin Cunningham - makezine.com, narbotic.com
@ -25,6 +25,9 @@
*/
#include "usbh_midi.h"
// To enable serial debugging see "settings.h"
//#define EXTRADEBUG // Uncomment to get even more debugging data
//////////////////////////
// MIDI MESAGES
// midi.org/techspecs/
@ -79,24 +82,16 @@
//| 0xF | 1 |Single Byte
//+-----+-----------+-------------------------------------------------------------------
const uint8_t USBH_MIDI::epDataInIndex = 1;
const uint8_t USBH_MIDI::epDataOutIndex = 2;
const uint8_t USBH_MIDI::epDataInIndexVSP = 3;
const uint8_t USBH_MIDI::epDataOutIndexVSP = 4;
USBH_MIDI::USBH_MIDI(USB *p) :
pUsb(p),
bAddress(0),
bNumEP(1),
bPollEnable(false),
isMidiFound(false),
readPtr(0) {
// initialize endpoint data structures
for(uint8_t i=0; i<MIDI_MAX_ENDPOINTS; i++) {
epInfo[i].epAddr = 0;
epInfo[i].maxPktSize = (i) ? 0 : 8;
epInfo[i].bmNakPower = (i) ? USB_NAK_NOWAIT : USB_NAK_MAX_POWER;
}
// register in USB subsystem
if (pUsb) {
@ -113,15 +108,20 @@ uint8_t USBH_MIDI::Init(uint8_t parent, uint8_t port, bool lowspeed)
UsbDevice *p = NULL;
EpInfo *oldep_ptr = NULL;
uint8_t num_of_conf; // number of configurations
uint8_t bConfNum = 0; // configuration number
uint8_t bNumEP = 1; // total number of EP in the configuration
USBTRACE("\rMIDI Init\r\n");
#ifdef DEBUG_USB_HOST
Notify(PSTR("USBH_MIDI version "), 0x80), D_PrintHex((uint8_t) (USBH_MIDI_VERSION / 10000), 0x80), D_PrintHex((uint8_t) (USBH_MIDI_VERSION / 100 % 100), 0x80), D_PrintHex((uint8_t) (USBH_MIDI_VERSION % 100), 0x80), Notify(PSTR("\r\n"), 0x80);
#endif
//for reconnect
for(uint8_t i=epDataInIndex; i<=epDataOutIndex; i++) {
epInfo[i].epAddr = (i==epDataInIndex) ? 0x81 : 0x01;
epInfo[i].maxPktSize = 0;
epInfo[i].bmSndToggle = 0;
epInfo[i].bmRcvToggle = 0;
// If you want to retry if you get a NAK response when sending, enable the following:
// epInfo[i].bmNakPower = (i==epDataOutIndex) ? 10 : USB_NAK_NOWAIT;
}
// get memory address of USB device address pool
@ -210,30 +210,43 @@ uint8_t USBH_MIDI::Init(uint8_t parent, uint8_t port, bool lowspeed)
bTransferTypeMask = bmUSB_TRANSFER_TYPE;
setupDeviceSpecific();
isMidiFound = false;
for (uint8_t i=0; i<num_of_conf; i++) {
rcode = parseConfigDescr(bAddress, i);
if( rcode )
// STEP1: Check if attached device is a MIDI device and fill endpoint data structure
USBTRACE("\r\nSTEP1: MIDI Start\r\n");
for(uint8_t i = 0; i < num_of_conf; i++) {
MidiDescParser midiDescParser(this, true); // Check for MIDI device
rcode = pUsb->getConfDescr(bAddress, 0, i, &midiDescParser);
if(rcode) // Check error code
goto FailGetConfDescr;
if (bNumEP > 1)
bNumEP += midiDescParser.getNumEPs();
if(bNumEP > 1) {// All endpoints extracted
bConfNum = midiDescParser.getConfValue();
break;
} // for
USBTRACE2("\r\nNumEP:", bNumEP);
}
}
USBTRACE2("STEP1: MIDI,NumEP:", bNumEP);
//Found the MIDI device?
if( bNumEP == 1 ){ //Device not found.
USBTRACE("MIDI not found.\r\nSTEP2: Attempts vendor specific bulk device\r\n");
// STEP2: Check if attached device is a MIDI device and fill endpoint data structure
for(uint8_t i = 0; i < num_of_conf; i++) {
MidiDescParser midiDescParser(this, false); // Allow all devices, vendor specific class with Bulk transfer
rcode = pUsb->getConfDescr(bAddress, 0, i, &midiDescParser);
if(rcode) // Check error code
goto FailGetConfDescr;
bNumEP += midiDescParser.getNumEPs();
if(bNumEP > 1) {// All endpoints extracted
bConfNum = midiDescParser.getConfValue();
break;
}
}
USBTRACE2("\r\nSTEP2: Vendor,NumEP:", bNumEP);
}
if( bNumEP < 2 ){ //Device not found.
rcode = 0xff;
goto FailGetConfDescr;
}
if( !isMidiFound ){ //MIDI Device not found. Try last Bulk transfer device
USBTRACE("MIDI not found. Attempts bulk device\r\n");
epInfo[epDataInIndex].epAddr = epInfo[epDataInIndexVSP].epAddr;
epInfo[epDataInIndex].maxPktSize = epInfo[epDataInIndexVSP].maxPktSize;
epInfo[epDataOutIndex].epAddr = epInfo[epDataOutIndexVSP].epAddr;
epInfo[epDataOutIndex].maxPktSize = epInfo[epDataOutIndexVSP].maxPktSize;
}
// Assign epInfo to epinfo pointer
rcode = pUsb->setEpInfoEntry(bAddress, 3, epInfo);
USBTRACE2("Conf:", bConfNum);
@ -242,9 +255,12 @@ uint8_t USBH_MIDI::Init(uint8_t parent, uint8_t port, bool lowspeed)
// Set Configuration Value
rcode = pUsb->setConf(bAddress, 0, bConfNum);
if (rcode) {
if (rcode)
goto FailSetConfDescr;
}
if(pFuncOnInit)
pFuncOnInit(); // Call the user function
bPollEnable = true;
USBTRACE("Init done.\r\n");
return 0;
@ -256,92 +272,10 @@ FailSetConfDescr:
return rcode;
}
/* get and parse config descriptor */
uint8_t USBH_MIDI::parseConfigDescr( uint8_t addr, uint8_t conf )
{
uint8_t buf[ DESC_BUFF_SIZE ];
uint8_t* buf_ptr = buf;
uint8_t rcode;
uint8_t descr_length;
uint8_t descr_type;
uint16_t total_length;
USB_ENDPOINT_DESCRIPTOR *epDesc;
bool isMidi = false;
// get configuration descriptor (get descriptor size only)
rcode = pUsb->getConfDescr( addr, 0, 4, conf, buf );
if( rcode ){
return rcode;
}
total_length = buf[2] | ((int)buf[3] << 8);
if( total_length > DESC_BUFF_SIZE ) { //check if total length is larger than buffer
total_length = DESC_BUFF_SIZE;
}
// get configuration descriptor (all)
rcode = pUsb->getConfDescr( addr, 0, total_length, conf, buf ); //get the whole descriptor
if( rcode ){
return rcode;
}
//parsing descriptors
while( buf_ptr < buf + total_length ) {
descr_length = *( buf_ptr );
descr_type = *( buf_ptr + 1 );
switch( descr_type ) {
case USB_DESCRIPTOR_CONFIGURATION :
bConfNum = buf_ptr[5];
break;
case USB_DESCRIPTOR_INTERFACE :
USBTRACE("\r\nConf:"), D_PrintHex(bConfNum, 0x80);
USBTRACE(" Int:"), D_PrintHex(buf_ptr[2], 0x80);
USBTRACE(" Alt:"), D_PrintHex(buf_ptr[3], 0x80);
USBTRACE(" EPs:"), D_PrintHex(buf_ptr[4], 0x80);
USBTRACE(" IntCl:"), D_PrintHex(buf_ptr[5], 0x80);
USBTRACE(" IntSubCl:"), D_PrintHex(buf_ptr[6], 0x80);
USBTRACE("\r\n");
if( buf_ptr[5] == USB_CLASS_AUDIO && buf_ptr[6] == USB_SUBCLASS_MIDISTREAMING ) { //p[5]; bInterfaceClass = 1(Audio), p[6]; bInterfaceSubClass = 3(MIDI Streaming)
isMidiFound = true; //MIDI device found.
isMidi = true;
USBTRACE("MIDI Device\r\n");
}else{
isMidi = false;
USBTRACE("No MIDI Device\r\n");
}
break;
case USB_DESCRIPTOR_ENDPOINT :
epDesc = (USB_ENDPOINT_DESCRIPTOR *)buf_ptr;
USBTRACE("-EPAddr:"), D_PrintHex(epDesc->bEndpointAddress, 0x80);
USBTRACE(" bmAttr:"), D_PrintHex(epDesc->bmAttributes, 0x80);
USBTRACE2(" MaxPktSz:", (uint8_t)epDesc->wMaxPacketSize);
if ((epDesc->bmAttributes & bTransferTypeMask) == USB_TRANSFER_TYPE_BULK) {//bulk
uint8_t index;
if( isMidi )
index = ((epDesc->bEndpointAddress & 0x80) == 0x80) ? epDataInIndex : epDataOutIndex;
else
index = ((epDesc->bEndpointAddress & 0x80) == 0x80) ? epDataInIndexVSP : epDataOutIndexVSP;
epInfo[index].epAddr = (epDesc->bEndpointAddress & 0x0F);
epInfo[index].maxPktSize = (uint8_t)epDesc->wMaxPacketSize;
bNumEP ++;
#ifdef DEBUG_USB_HOST
PrintEndpointDescriptor(epDesc);
#endif
}
break;
default:
break;
}//switch( descr_type
buf_ptr += descr_length; //advance buffer pointer
}//while( buf_ptr <=...
return 0;
}
/* Performs a cleanup after failed Init() attempt */
uint8_t USBH_MIDI::Release()
{
pUsb->GetAddressPool().FreeAddress(bAddress);
bNumEP = 1; //must have to be reset to 1
bAddress = 0;
bPollEnable = false;
readPtr = 0;
@ -375,7 +309,10 @@ uint8_t USBH_MIDI::RecvData(uint16_t *bytes_rcvd, uint8_t *dataptr)
{
*bytes_rcvd = (uint16_t)epInfo[epDataInIndex].maxPktSize;
uint8_t r = pUsb->inTransfer(bAddress, epInfo[epDataInIndex].epAddr, bytes_rcvd, dataptr);
#ifdef EXTRADEBUG
if( r )
USBTRACE2("inTransfer():", r);
#endif
if( *bytes_rcvd < (MIDI_EVENT_PACKET_SIZE-4)){
dataptr[*bytes_rcvd] = '\0';
dataptr[(*bytes_rcvd)+1] = '\0';
@ -421,60 +358,52 @@ RecvData_return_from_buffer:
*(outBuf++) = m = recvBuf[readPtr++];
*(outBuf++) = recvBuf[readPtr++];
*(outBuf++) = recvBuf[readPtr++];
return lookupMsgSize(m, cin);
}
/* Receive raw data from MIDI device */
uint8_t USBH_MIDI::RecvRawData(uint8_t *outBuf)
{
return RecvData(outBuf, true);
return getMsgSizeFromCin(cin);
}
/* Send data to MIDI device */
uint8_t USBH_MIDI::SendData(uint8_t *dataptr, uint8_t nCable)
{
uint8_t buf[4];
uint8_t msg;
uint8_t status = dataptr[0];
msg = dataptr[0];
// SysEx long message ?
if( msg == 0xf0 )
{
uint8_t cin = convertStatus2Cin(status);
if ( status == 0xf0 ) {
// SysEx long message
return SendSysEx(dataptr, countSysExDataSize(dataptr), nCable);
}
buf[0] = (nCable << 4) | (msg >> 4);
if( msg < 0xf0 ) msg = msg & 0xf0;
//Building USB-MIDI Event Packets
buf[0] = (uint8_t)(nCable << 4) | cin;
buf[1] = dataptr[0];
buf[2] = dataptr[1];
buf[3] = dataptr[2];
switch(lookupMsgSize(msg)) {
uint8_t msglen = getMsgSizeFromCin(cin);
switch(msglen) {
//3 bytes message
case 3 :
if(msg == 0xf2) {//system common message(SPP)
buf[0] = (nCable << 4) | 3;
}
buf[2] = dataptr[1];
buf[3] = dataptr[2];
break;
//2 bytes message
case 2 :
if(msg == 0xf1 || msg == 0xf3) {//system common message(MTC/SongSelect)
buf[0] = (nCable << 4) | 2;
}
buf[2] = dataptr[1];
buf[3] = 0;
break;
//1 byte message
case 1 :
default :
buf[2] = 0;
buf[3] = 0;
break;
default :
break;
}
#ifdef EXTRADEBUG
//Dump for raw USB-MIDI event packet
Notify(PSTR("SendData():"), 0x80), D_PrintHex((buf[0]), 0x80), D_PrintHex((buf[1]), 0x80), D_PrintHex((buf[2]), 0x80), D_PrintHex((buf[3]), 0x80), Notify(PSTR("\r\n"), 0x80);
#endif
return pUsb->outTransfer(bAddress, epInfo[epDataOutIndex].epAddr, 4, buf);
}
@ -495,54 +424,13 @@ void USBH_MIDI::PrintEndpointDescriptor( const USB_ENDPOINT_DESCRIPTOR* ep_ptr )
/*Return */
/* 0 : undefined message */
/* 0<: Vaild message size(1-3) */
uint8_t USBH_MIDI::lookupMsgSize(uint8_t midiMsg, uint8_t cin)
//uint8_t USBH_MIDI::lookupMsgSize(uint8_t midiMsg, uint8_t cin)
uint8_t USBH_MIDI::lookupMsgSize(uint8_t status, uint8_t cin)
{
uint8_t msgSize = 0;
//SysEx message?
cin = cin & 0x0f;
if( (cin & 0xc) == 4 ) {
if( cin == 4 || cin == 7 ) return 3;
if( cin == 6 ) return 2;
if( cin == 5 ) return 1;
if( cin == 0 ){
cin = convertStatus2Cin(status);
}
if( midiMsg < 0xf0 ) midiMsg &= 0xf0;
switch(midiMsg) {
//3 bytes messages
case 0xf2 : //system common message(SPP)
case 0x80 : //Note off
case 0x90 : //Note on
case 0xa0 : //Poly KeyPress
case 0xb0 : //Control Change
case 0xe0 : //PitchBend Change
msgSize = 3;
break;
//2 bytes messages
case 0xf1 : //system common message(MTC)
case 0xf3 : //system common message(SongSelect)
case 0xc0 : //Program Change
case 0xd0 : //Channel Pressure
msgSize = 2;
break;
//1 byte messages
case 0xf8 : //system realtime message
case 0xf9 : //system realtime message
case 0xfa : //system realtime message
case 0xfb : //system realtime message
case 0xfc : //system realtime message
case 0xfe : //system realtime message
case 0xff : //system realtime message
msgSize = 1;
break;
//undefine messages
default :
break;
}
return msgSize;
return getMsgSizeFromCin(cin);
}
/* SysEx data size counter */
@ -555,11 +443,9 @@ uint16_t USBH_MIDI::countSysExDataSize(uint8_t *dataptr)
}
//Search terminator(0xf7)
while(*dataptr != 0xf7)
{
while(*dataptr != 0xf7) {
dataptr++;
c++;
//Limiter (default: 256 bytes)
if(c > MIDI_MAX_SYSEX_SIZE){
c = 0;
@ -575,15 +461,15 @@ uint8_t USBH_MIDI::SendSysEx(uint8_t *dataptr, uint16_t datasize, uint8_t nCable
uint8_t buf[MIDI_EVENT_PACKET_SIZE];
uint8_t rc = 0;
uint16_t n = datasize;
uint16_t pktSize = (n*10/3+7)/10*4; //Calculate total USB MIDI packet size
uint8_t wptr = 0;
uint8_t maxpkt = epInfo[epDataInIndex].maxPktSize;
if( maxpkt > MIDI_EVENT_PACKET_SIZE ) maxpkt = MIDI_EVENT_PACKET_SIZE;
USBTRACE("SendSysEx:\r\t");
USBTRACE2(" Length:\t", datasize);
#ifdef EXTRADEBUG
uint16_t pktSize = (n+2)/3; //Calculate total USB MIDI packet size
USBTRACE2(" Total pktSize:\t", pktSize);
#endif
while(n > 0) {
//Byte 0
@ -595,14 +481,14 @@ uint8_t USBH_MIDI::SendSysEx(uint8_t *dataptr, uint16_t datasize, uint8_t nCable
buf[wptr++] = *(dataptr++);
buf[wptr++] = 0x00;
buf[wptr++] = 0x00;
n = n - 1;
n = 0;
break;
case 2 :
buf[wptr++] = (nCable << 4) | 0x6; //x6 SysEx ends with following two bytes.
buf[wptr++] = *(dataptr++);
buf[wptr++] = *(dataptr++);
buf[wptr++] = 0x00;
n = n - 2;
n = 0;
break;
case 3 :
buf[wptr] = (nCable << 4) | 0x7; //x7 SysEx ends with following three bytes.
@ -621,19 +507,12 @@ uint8_t USBH_MIDI::SendSysEx(uint8_t *dataptr, uint16_t datasize, uint8_t nCable
if( (rc = pUsb->outTransfer(bAddress, epInfo[epDataOutIndex].epAddr, wptr, buf)) != 0 ){
break;
}
wptr = 0; //rewind data pointer
wptr = 0; //rewind write pointer
}
}
return(rc);
}
/* Send raw data to MIDI device */
uint8_t USBH_MIDI::SendRawData(uint16_t bytes_send, uint8_t *dataptr)
{
return pUsb->outTransfer(bAddress, epInfo[epDataOutIndex].epAddr, bytes_send, dataptr);
}
uint8_t USBH_MIDI::extractSysExData(uint8_t *p, uint8_t *buf)
{
uint8_t rc = 0;
@ -664,3 +543,150 @@ uint8_t USBH_MIDI::extractSysExData(uint8_t *p, uint8_t *buf)
}
return(rc);
}
// Configuration Descriptor Parser
// Copied from confdescparser.h and modifiy.
MidiDescParser::MidiDescParser(UsbMidiConfigXtracter *xtractor, bool modeMidi) :
theXtractor(xtractor),
stateParseDescr(0),
dscrLen(0),
dscrType(0),
nEPs(0),
isMidiSearch(modeMidi){
theBuffer.pValue = varBuffer;
valParser.Initialize(&theBuffer);
theSkipper.Initialize(&theBuffer);
}
void MidiDescParser::Parse(const uint16_t len, const uint8_t *pbuf, const uint16_t &offset __attribute__((unused))) {
uint16_t cntdn = (uint16_t)len;
uint8_t *p = (uint8_t*)pbuf;
while(cntdn)
if(!ParseDescriptor(&p, &cntdn))
return;
}
bool MidiDescParser::ParseDescriptor(uint8_t **pp, uint16_t *pcntdn) {
USB_CONFIGURATION_DESCRIPTOR* ucd = reinterpret_cast<USB_CONFIGURATION_DESCRIPTOR*>(varBuffer);
USB_INTERFACE_DESCRIPTOR* uid = reinterpret_cast<USB_INTERFACE_DESCRIPTOR*>(varBuffer);
switch(stateParseDescr) {
case 0:
theBuffer.valueSize = 2;
valParser.Initialize(&theBuffer);
stateParseDescr = 1;
// fall through
case 1:
if(!valParser.Parse(pp, pcntdn))
return false;
dscrLen = *((uint8_t*)theBuffer.pValue);
dscrType = *((uint8_t*)theBuffer.pValue + 1);
stateParseDescr = 2;
// fall through
case 2:
// This is a sort of hack. Assuming that two bytes are all ready in the buffer
// the pointer is positioned two bytes ahead in order for the rest of descriptor
// to be read right after the size and the type fields.
// This should be used carefully. varBuffer should be used directly to handle data
// in the buffer.
theBuffer.pValue = varBuffer + 2;
stateParseDescr = 3;
// fall through
case 3:
switch(dscrType) {
case USB_DESCRIPTOR_INTERFACE:
isGoodInterface = false;
break;
case USB_DESCRIPTOR_CONFIGURATION:
case USB_DESCRIPTOR_ENDPOINT:
case HID_DESCRIPTOR_HID:
break;
}
theBuffer.valueSize = dscrLen - 2;
valParser.Initialize(&theBuffer);
stateParseDescr = 4;
// fall through
case 4:
switch(dscrType) {
case USB_DESCRIPTOR_CONFIGURATION:
if(!valParser.Parse(pp, pcntdn))
return false;
confValue = ucd->bConfigurationValue;
break;
case USB_DESCRIPTOR_INTERFACE:
if(!valParser.Parse(pp, pcntdn))
return false;
USBTRACE("Interface descriptor:\r\n");
USBTRACE2(" Inf#:\t\t", uid->bInterfaceNumber);
USBTRACE2(" Alt:\t\t", uid->bAlternateSetting);
USBTRACE2(" EPs:\t\t", uid->bNumEndpoints);
USBTRACE2(" IntCl:\t\t", uid->bInterfaceClass);
USBTRACE2(" IntSubcl:\t", uid->bInterfaceSubClass);
USBTRACE2(" Protocol:\t", uid->bInterfaceProtocol);
// MIDI check mode ?
if( isMidiSearch ){ //true: MIDI Streaming, false: ALL
if( uid->bInterfaceClass == USB_CLASS_AUDIO && uid->bInterfaceSubClass == USB_SUBCLASS_MIDISTREAMING ) {
// MIDI found.
USBTRACE("+MIDI found\r\n\r\n");
}else{
USBTRACE("-MIDI not found\r\n\r\n");
break;
}
}
isGoodInterface = true;
// Initialize the counter if no two endpoints can be found in one interface.
if(nEPs < 2)
// reset endpoint counter
nEPs = 0;
break;
case USB_DESCRIPTOR_ENDPOINT:
if(!valParser.Parse(pp, pcntdn))
return false;
if(isGoodInterface && nEPs < 2){
USBTRACE(">Extracting endpoint\r\n");
if( theXtractor->EndpointXtract(confValue, 0, 0, 0, (USB_ENDPOINT_DESCRIPTOR*)varBuffer) )
nEPs++;
}
break;
default:
if(!theSkipper.Skip(pp, pcntdn, dscrLen - 2))
return false;
}
theBuffer.pValue = varBuffer;
stateParseDescr = 0;
}
return true;
}
/* Extracts endpoint information from config descriptor */
bool USBH_MIDI::EndpointXtract(uint8_t conf __attribute__((unused)),
uint8_t iface __attribute__((unused)),
uint8_t alt __attribute__((unused)),
uint8_t proto __attribute__((unused)),
const USB_ENDPOINT_DESCRIPTOR *pep)
{
uint8_t index;
#ifdef DEBUG_USB_HOST
PrintEndpointDescriptor(pep);
#endif
// Is the endpoint transfer type bulk?
if((pep->bmAttributes & bTransferTypeMask) == USB_TRANSFER_TYPE_BULK) {
USBTRACE("+valid EP found.\r\n");
index = (pep->bEndpointAddress & 0x80) == 0x80 ? epDataInIndex : epDataOutIndex;
} else {
USBTRACE("-No valid EP found.\r\n");
return false;
}
// Fill the rest of endpoint data structure
epInfo[index].epAddr = (pep->bEndpointAddress & 0x0F);
// The maximum packet size for the USB Host Shield 2.0 library is 64 bytes.
if(pep->wMaxPacketSize > MIDI_EVENT_PACKET_SIZE) {
epInfo[index].maxPktSize = MIDI_EVENT_PACKET_SIZE;
} else {
epInfo[index].maxPktSize = (uint8_t)pep->wMaxPacketSize;
}
return true;
}

86
usbh_midi.h
View file

@ -1,7 +1,7 @@
/*
*******************************************************************************
* USB-MIDI class driver for USB Host Shield 2.0 Library
* Copyright (c) 2012-2018 Yuuichi Akagawa
* Copyright (c) 2012-2021 Yuuichi Akagawa
*
* Idea from LPK25 USB-MIDI to Serial MIDI converter
* by Collin Cunningham - makezine.com, narbotic.com
@ -26,31 +26,67 @@
#if !defined(_USBH_MIDI_H_)
#define _USBH_MIDI_H_
//#define DEBUG_USB_HOST
#include "Usb.h"
#define MIDI_MAX_ENDPOINTS 5 //endpoint 0, bulk_IN(MIDI), bulk_OUT(MIDI), bulk_IN(VSP), bulk_OUT(VSP)
#define USBH_MIDI_VERSION 600
#define MIDI_MAX_ENDPOINTS 3 //endpoint 0, bulk_IN(MIDI), bulk_OUT(MIDI)
#define USB_SUBCLASS_MIDISTREAMING 3
#define DESC_BUFF_SIZE 256
#define MIDI_EVENT_PACKET_SIZE 64
#define MIDI_MAX_SYSEX_SIZE 256
class USBH_MIDI;
class USBH_MIDI : public USBDeviceConfig
namespace _ns_USBH_MIDI {
const uint8_t cin2len[] PROGMEM = {0, 0, 2, 3, 3, 1, 2, 3, 3, 3, 3, 3, 2, 2, 3, 1};
const uint8_t sys2cin[] PROGMEM = {0, 2, 3, 2, 0, 0, 5, 0, 0xf, 0, 0xf, 0xf, 0xf, 0, 0xf, 0xf};
}
// Endpoint Descriptor extracter Class
class UsbMidiConfigXtracter {
public:
//virtual void ConfigXtract(const USB_CONFIGURATION_DESCRIPTOR *conf) = 0;
//virtual void InterfaceXtract(uint8_t conf, const USB_INTERFACE_DESCRIPTOR *iface) = 0;
virtual bool EndpointXtract(uint8_t conf __attribute__((unused)), uint8_t iface __attribute__((unused)), uint8_t alt __attribute__((unused)), uint8_t proto __attribute__((unused)), const USB_ENDPOINT_DESCRIPTOR *ep __attribute__((unused))) {
return true;
};
};
// Configuration Descriptor Parser Class
class MidiDescParser : public USBReadParser {
UsbMidiConfigXtracter *theXtractor;
MultiValueBuffer theBuffer;
MultiByteValueParser valParser;
ByteSkipper theSkipper;
uint8_t varBuffer[16 /*sizeof(USB_CONFIGURATION_DESCRIPTOR)*/];
uint8_t stateParseDescr; // ParseDescriptor state
uint8_t dscrLen; // Descriptor length
uint8_t dscrType; // Descriptor type
uint8_t nEPs; // number of valid endpoint
bool isMidiSearch; //Configuration mode true: MIDI, false: Vendor specific
bool isGoodInterface; // Apropriate interface flag
uint8_t confValue; // Configuration value
bool ParseDescriptor(uint8_t **pp, uint16_t *pcntdn);
public:
MidiDescParser(UsbMidiConfigXtracter *xtractor, bool modeMidi);
void Parse(const uint16_t len, const uint8_t *pbuf, const uint16_t &offset);
inline uint8_t getConfValue() { return confValue; };
inline uint8_t getNumEPs() { return nEPs; };
};
/** This class implements support for a MIDI device. */
class USBH_MIDI : public USBDeviceConfig, public UsbMidiConfigXtracter
{
protected:
static const uint8_t epDataInIndex; // DataIn endpoint index(MIDI)
static const uint8_t epDataOutIndex; // DataOUT endpoint index(MIDI)
static const uint8_t epDataInIndexVSP; // DataIn endpoint index(Vendor Specific Protocl)
static const uint8_t epDataOutIndexVSP; // DataOUT endpoint index(Vendor Specific Protocl)
static const uint8_t epDataInIndex = 1; // DataIn endpoint index(MIDI)
static const uint8_t epDataOutIndex= 2; // DataOUT endpoint index(MIDI)
/* mandatory members */
USB *pUsb;
uint8_t bAddress;
uint8_t bConfNum; // configuration number
uint8_t bNumEP; // total number of EP in the configuration
bool bPollEnable;
bool isMidiFound;
uint16_t pid, vid; // ProductID, VendorID
uint8_t bTransferTypeMask;
/* Endpoint data structure */
@ -59,27 +95,36 @@ protected:
uint8_t recvBuf[MIDI_EVENT_PACKET_SIZE];
uint8_t readPtr;
uint8_t parseConfigDescr(uint8_t addr, uint8_t conf);
uint16_t countSysExDataSize(uint8_t *dataptr);
void setupDeviceSpecific();
inline uint8_t convertStatus2Cin(uint8_t status) {
return ((status < 0xf0) ? ((status & 0xF0) >> 4) : pgm_read_byte_near(_ns_USBH_MIDI::sys2cin + (status & 0x0F)));
};
inline uint8_t getMsgSizeFromCin(uint8_t cin) {
return pgm_read_byte_near(_ns_USBH_MIDI::cin2len + cin);
};
/* UsbConfigXtracter implementation */
bool EndpointXtract(uint8_t conf, uint8_t iface, uint8_t alt, uint8_t proto, const USB_ENDPOINT_DESCRIPTOR *ep);
#ifdef DEBUG_USB_HOST
void PrintEndpointDescriptor( const USB_ENDPOINT_DESCRIPTOR* ep_ptr );
#endif
public:
USBH_MIDI(USB *p);
// Misc functions
operator bool() { return (pUsb->getUsbTaskState()==USB_STATE_RUNNING); }
operator bool() { return (bPollEnable); }
uint16_t idVendor() { return vid; }
uint16_t idProduct() { return pid; }
// Methods for recieving and sending data
uint8_t RecvData(uint16_t *bytes_rcvd, uint8_t *dataptr);
uint8_t RecvData(uint8_t *outBuf, bool isRaw=false);
uint8_t RecvRawData(uint8_t *outBuf);
inline uint8_t RecvRawData(uint8_t *outBuf) { return RecvData(outBuf, true); };
uint8_t SendData(uint8_t *dataptr, uint8_t nCable=0);
inline uint8_t SendRawData(uint16_t bytes_send, uint8_t *dataptr) { return pUsb->outTransfer(bAddress, epInfo[epDataOutIndex].epAddr, bytes_send, dataptr); };
uint8_t lookupMsgSize(uint8_t midiMsg, uint8_t cin=0);
uint8_t SendSysEx(uint8_t *dataptr, uint16_t datasize, uint8_t nCable=0);
uint8_t extractSysExData(uint8_t *p, uint8_t *buf);
uint8_t SendRawData(uint16_t bytes_send, uint8_t *dataptr);
// backward compatibility functions
inline uint8_t RcvData(uint16_t *bytes_rcvd, uint8_t *dataptr) { return RecvData(bytes_rcvd, dataptr); };
inline uint8_t RcvData(uint8_t *outBuf) { return RecvData(outBuf); };
@ -88,5 +133,12 @@ public:
virtual uint8_t Init(uint8_t parent, uint8_t port, bool lowspeed);
virtual uint8_t Release();
virtual uint8_t GetAddress() { return bAddress; };
void attachOnInit(void (*funcOnInit)(void)) {
pFuncOnInit = funcOnInit;
};
private:
void (*pFuncOnInit)(void) = nullptr; // Pointer to function called in onInit()
};
#endif //_USBH_MIDI_H_