solata10 wrote:hmmm, if i'm correct, this way i can send at most 4 bytes at once right ?
and i have no way to getting back return informations.
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00001000 // Note off event
10000ccc // Note off; Channel (ADC channel 0..7)
00000mmm // Key (MSB of ADC)
0lllllll // Velocity (LSB of ADC)
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// This descriptor is based on http://www.usb.org/developers/devclass_docs/midi10.pdf
//
// Appendix B. Example: Simple MIDI Adapter (Informative)
// B.1 Device Descriptor
//
static PROGMEM char deviceDescrMIDI[] = { /* USB device descriptor */
18, /* sizeof(usbDescriptorDevice): length of descriptor in bytes */
USBDESCR_DEVICE, /* descriptor type */
0x10, 0x01, /* USB version supported */
0, /* device class: defined at interface level */
0, /* subclass */
0, /* protocol */
8, /* max packet size */
USB_CFG_VENDOR_ID, /* 2 bytes */
USB_CFG_DEVICE_ID, /* 2 bytes */
USB_CFG_DEVICE_VERSION, /* 2 bytes */
1, /* manufacturer string index */
2, /* product string index */
0, /* serial number string index */
1, /* number of configurations */
};
// B.2 Configuration Descriptor
static PROGMEM char configDescrMIDI[] = { /* USB configuration descriptor */
9, /* sizeof(usbDescrConfig): length of descriptor in bytes */
USBDESCR_CONFIG, /* descriptor type */
101 + 32 /* cable 1 */, 0, /* total length of data returned (including inlined descriptors) */
2, /* number of interfaces in this configuration */
1, /* index of this configuration */
0, /* configuration name string index */
#if USB_CFG_IS_SELF_POWERED
USBATTR_SELFPOWER, /* attributes */
#else
USBATTR_BUSPOWER, /* attributes */
#endif
USB_CFG_MAX_BUS_POWER / 2, /* max USB current in 2mA units */
// B.3 AudioControl Interface Descriptors
// The AudioControl interface describes the device structure (audio function topology)
// and is used to manipulate the Audio Controls. This device has no audio function
// incorporated. However, the AudioControl interface is mandatory and therefore both
// the standard AC interface descriptor and the classspecific AC interface descriptor
// must be present. The class-specific AC interface descriptor only contains the header
// descriptor.
// B.3.1 Standard AC Interface Descriptor
// The AudioControl interface has no dedicated endpoints associated with it. It uses the
// default pipe (endpoint 0) for all communication purposes. Class-specific AudioControl
// Requests are sent using the default pipe. There is no Status Interrupt endpoint provided.
/* AC interface descriptor follows inline: */
9, /* sizeof(usbDescrInterface): length of descriptor in bytes */
USBDESCR_INTERFACE, /* descriptor type */
0, /* index of this interface */
0, /* alternate setting for this interface */
0, /* endpoints excl 0: number of endpoint descriptors to follow */
1, /* */
1, /* */
0, /* */
0, /* string index for interface */
// B.3.2 Class-specific AC Interface Descriptor
// The Class-specific AC interface descriptor is always headed by a Header descriptor
// that contains general information about the AudioControl interface. It contains all
// the pointers needed to describe the Audio Interface Collection, associated with the
// described audio function. Only the Header descriptor is present in this device
// because it does not contain any audio functionality as such.
/* AC Class-Specific descriptor */
9, /* sizeof(usbDescrCDC_HeaderFn): length of descriptor in bytes */
36, /* descriptor type */
1, /* header functional descriptor */
0x0, 0x01, /* bcdADC */
9, 0, /* wTotalLength */
1, /* */
1, /* */
// B.4 MIDIStreaming Interface Descriptors
// B.4.1 Standard MS Interface Descriptor
/* interface descriptor follows inline: */
9, /* length of descriptor in bytes */
USBDESCR_INTERFACE, /* descriptor type */
1, /* index of this interface */
0, /* alternate setting for this interface */
2, /* endpoints excl 0: number of endpoint descriptors to follow */
1, /* AUDIO */
3, /* MS */
0, /* unused */
0, /* string index for interface */
// B.4.2 Class-specific MS Interface Descriptor
/* MS Class-Specific descriptor */
7, /* length of descriptor in bytes */
36, /* descriptor type */
1, /* header functional descriptor */
0x0, 0x01, /* bcdADC */
65 + 32, 0, /* wTotalLength */
//CABLE 0!
// B.4.3 MIDI IN Jack Descriptor
6, /* bLength */
36, /* descriptor type */
2, /* MIDI_IN_JACK desc subtype */
1, /* EMBEDDED bJackType */
1, /* bJackID */
0, /* iJack */
6, /* bLength */
36, /* descriptor type */
2, /* MIDI_IN_JACK desc subtype */
2, /* EXTERNAL bJackType */
2, /* bJackID */
0, /* iJack */
//B.4.4 MIDI OUT Jack Descriptor
9, /* length of descriptor in bytes */
36, /* descriptor type */
3, /* MIDI_OUT_JACK descriptor */
1, /* EMBEDDED bJackType */
3, /* bJackID */
1, /* No of input pins */
2, /* BaSourceID */
1, /* BaSourcePin */
0, /* iJack */
9, /* bLength of descriptor in bytes */
36, /* bDescriptorType */
3, /* MIDI_OUT_JACK bDescriptorSubtype */
2, /* EXTERNAL bJackType */
4, /* bJackID */
1, /* bNrInputPins */
1, /* baSourceID (0) */
1, /* baSourcePin (0) */
0, /* iJack */
//CABLE 1!
// B.4.3 MIDI IN Jack Descriptor
6, /* bLength */
36, /* descriptor type */
2, /* MIDI_IN_JACK desc subtype */
1, /* EMBEDDED bJackType */
5, /* bJackID */
0, /* iJack */
6, /* bLength */
36, /* descriptor type */
2, /* MIDI_IN_JACK desc subtype */
2, /* EXTERNAL bJackType */
6, /* bJackID */
0, /* iJack */
//B.4.4 MIDI OUT Jack Descriptor
9, /* length of descriptor in bytes */
36, /* descriptor type */
3, /* MIDI_OUT_JACK descriptor */
1, /* EMBEDDED bJackType */
7, /* bJackID */
1, /* No of input pins */
6, /* BaSourceID */
1, /* BaSourcePin */
0, /* iJack */
9, /* bLength of descriptor in bytes */
36, /* bDescriptorType */
3, /* MIDI_OUT_JACK bDescriptorSubtype */
2, /* EXTERNAL bJackType */
8, /* bJackID */
1, /* bNrInputPins */
5, /* baSourceID (0) */
1, /* baSourcePin (0) */
0, /* iJack */
// B.5 Bulk OUT Endpoint Descriptors
//B.5.1 Standard Bulk OUT Endpoint Descriptor
9, /* bLenght */
USBDESCR_ENDPOINT, /* bDescriptorType = endpoint */
2, //0x1, /* bEndpointAddress OUT endpoint number 1 */
3, /* bmAttributes: 2:Bulk, 3:Interrupt endpoint */
8, 0, /* wMaxPacketSize */
10, /* bIntervall in ms */
0, /* bRefresh */
0, /* bSyncAddress */
// B.5.2 Class-specific MS Bulk OUT Endpoint Descriptor
6, /* bLength of descriptor in bytes */
37, /* bDescriptorType */
1, /* bDescriptorSubtype */
2, /* bNumEmbMIDIJack */
1, /* baAssocJackID (0) */
5, /* baAssocJackID (1) */
//B.6 Bulk IN Endpoint Descriptors
//B.6.1 Standard Bulk IN Endpoint Descriptor
9, /* bLenght */
USBDESCR_ENDPOINT, /* bDescriptorType = endpoint */
0x82,//0x81, /* bEndpointAddress IN endpoint number 1 */
3, /* bmAttributes: 2: Bulk, 3: Interrupt endpoint */
8, 0, /* wMaxPacketSize */
10, /* bIntervall in ms */
0, /* bRefresh */
0, /* bSyncAddress */
// B.6.2 Class-specific MS Bulk IN Endpoint Descriptor
6, /* bLength of descriptor in bytes */
37, /* bDescriptorType */
1, /* bDescriptorSubtype */
2, /* bNumEmbMIDIJack (0) */
3, /* baAssocJackID (0) */
7, /* baAssocJackID (1) */
//101 + 32 (eshe odin kabel)
};
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/*---------------------------------------------------------------------------*/
/* usbFunctionWriteOut */
/* */
/* this Function is called if a MIDI Out message (from PC) arrives. */
/* */
/*---------------------------------------------------------------------------*/
void usbFunctionWriteOut(uchar * data, uchar len)
{
//usb 0x9 - note ON и МИДИ команда 9 канал не 10-й
uchar drum_num;
if ( ( ( data[0] & 0x0f ) == 0x09 ) & ( ( data[1]>>4 ) == 0x09 ) ) {
//если это не 10-й канал (барабаны)
if ( (data[1] & 0x0f) != 9 ) {
//если ноту нажали - выводим ее на CV
set_note( data[2] );
PORTB = 0x01; //выводим сигнал GATE
} else {
//для барабанов начальной нотой будет
//0x3c - нота ДО неведомой октавы (6-я, от начала, если считать от единицы)
drum_num = (uchar)data[2] - 0x3c; //считая с ноля;
PORTC |= 1<<drum_num;
}
}
if ( ( ( data[0] & 0x0f ) == 0x08 ) & ( ( data[1]>>4 ) == 0x08 ) ) {
//если это не 10-й канал (барабаны)
if ( (data[1] & 0x0f) != 9 ) {
//если ноту отпустили, то снимаем только GATE
PORTB = 0x00;
} else {
drum_num = data[2] - 0x3c; //считая с ноля;
PORTC &= ~(1<<drum_num);
}
}
}
void set_note( int note ) {
int pwm_val = note<<3; //ноты от 0 до 127
// pwm_val - это число от 0 до 1023
OCR1AH = (char)(pwm_val>>8);
OCR1AL = (char)pwm_val;
}
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D+ 5V D-
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_ _ _
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| |220 | |2k2 | |550
|_| |_| |_|
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USB+ -----+ +-------+------ USB-
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| |330 | |4k7
|_| |_|
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GND GND
