mirror of
https://github.com/LNH-team/dspico-usb-examples.git
synced 2026-06-02 17:26:50 +02:00
172 lines
7.4 KiB
C++
172 lines
7.4 KiB
C++
#include "common.h"
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#include <array>
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#include "UsbStringDescriptor.h"
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#include "tusb.h"
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#include "usb_descriptors.h"
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/* A combination of interfaces must have a unique product id, since PC will save device driver after the first plug.
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* Same VID/PID with different interface e.g MSC (first), then CDC (later) will possibly cause system error on PC.
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*
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* Auto ProductID layout's Bitmap:
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* [MSB] AUDIO | MIDI | HID | MSC | CDC [LSB]
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*/
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#define _PID_MAP(itf, n) ( (CFG_TUD_##itf) << (n) )
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#define USB_PID (0x4000 | _PID_MAP(CDC, 0) | _PID_MAP(MSC, 1) | _PID_MAP(HID, 2) | \
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_PID_MAP(MIDI, 3) | _PID_MAP(AUDIO, 4) | _PID_MAP(VENDOR, 5) )
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const u8* tud_descriptor_device_cb(void)
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{
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static const tusb_desc_device_t deviceDescriptor =
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{
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.bLength = sizeof(tusb_desc_device_t),
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.bDescriptorType = TUSB_DESC_DEVICE,
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.bcdUSB = 0x0110,
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// Use Interface Association Descriptor (IAD) for Audio
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// As required by USB Specs IAD's subclass must be common class (2) and protocol must be IAD (1)
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.bDeviceClass = TUSB_CLASS_MISC,
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.bDeviceSubClass = MISC_SUBCLASS_COMMON,
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.bDeviceProtocol = MISC_PROTOCOL_IAD,
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.bMaxPacketSize0 = CFG_TUD_ENDPOINT0_SIZE,
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.idVendor = 0xCafe,
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.idProduct = USB_PID,
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.bcdDevice = 0x0100,
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.iManufacturer = STRID_MANUFACTURER,
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.iProduct = STRID_PRODUCT,
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.iSerialNumber = STRID_SERIAL,
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.bNumConfigurations = 0x01
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};
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return (const u8*)&deviceDescriptor;
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}
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#define CONFIG_TOTAL_LEN (TUD_CONFIG_DESC_LEN + TUD_AUDIO_SPEAKER_STEREO_FB_DESC_LEN)
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#define EPNUM_AUDIO_FB 0x01
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#define EPNUM_AUDIO_OUT 0x01
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const u8* tud_descriptor_configuration_cb(u8 index)
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{
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(void)index;
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static const u8 configurationDescriptor[] =
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{
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// Config number, interface count, string index, total length, attribute, power in mA
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TUD_CONFIG_DESCRIPTOR(1, ITF_NUM_TOTAL, 0, CONFIG_TOTAL_LEN, 0x00, 100),
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/* Standard Interface Association Descriptor (IAD) */
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TUD_AUDIO_DESC_IAD(/*_firstitf*/ 0, /*_nitfs*/ 0x02, /*_stridx*/ 0x00),
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/* Standard AC Interface Descriptor(4.7.1) */\
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TUD_AUDIO_DESC_STD_AC(/*_itfnum*/ 0, /*_nEPs*/ 0x00, /*_stridx*/ STRID_AUDIO_INTERFACE),
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/* Class-Specific AC Interface Header Descriptor(4.7.2) */
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TUD_AUDIO_DESC_CS_AC(
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/*_bcdADC*/ 0x0200,
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/*_category*/ AUDIO_FUNC_DESKTOP_SPEAKER,
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/*_totallen*/ TUD_AUDIO_DESC_CLK_SRC_LEN+TUD_AUDIO_DESC_INPUT_TERM_LEN+TUD_AUDIO_DESC_OUTPUT_TERM_LEN+TUD_AUDIO_DESC_FEATURE_UNIT_TWO_CHANNEL_LEN,
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/*_ctrl*/ AUDIO_CS_AS_INTERFACE_CTRL_LATENCY_POS),
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/* Clock Source Descriptor(4.7.2.1) */
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TUD_AUDIO_DESC_CLK_SRC(
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/*_clkid*/ UAC2_ENTITY_CLOCK,
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/*_attr*/ AUDIO_CLOCK_SOURCE_ATT_INT_PRO_CLK,
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/*_ctrl*/ (AUDIO_CTRL_RW << AUDIO_CLOCK_SOURCE_CTRL_CLK_FRQ_POS),
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/*_assocTerm*/ UAC2_ENTITY_INPUT_TERMINAL,
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/*_stridx*/ 0x00),
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/* Input Terminal Descriptor(4.7.2.4) */
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TUD_AUDIO_DESC_INPUT_TERM(
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/*_termid*/ UAC2_ENTITY_INPUT_TERMINAL,
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/*_termtype*/ AUDIO_TERM_TYPE_USB_STREAMING,
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/*_assocTerm*/ 0x00,
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/*_clkid*/ UAC2_ENTITY_CLOCK,
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/*_nchannelslogical*/ 0x02,
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/*_channelcfg*/ AUDIO_CHANNEL_CONFIG_NON_PREDEFINED,
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/*_idxchannelnames*/ 0x00,
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/*_ctrl*/ 0 * (AUDIO_CTRL_R << AUDIO_IN_TERM_CTRL_CONNECTOR_POS),
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/*_stridx*/ 0x00),
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/* Output Terminal Descriptor(4.7.2.5) */
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TUD_AUDIO_DESC_OUTPUT_TERM(
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/*_termid*/ UAC2_ENTITY_OUTPUT_TERMINAL,
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/*_termtype*/ AUDIO_TERM_TYPE_OUT_DESKTOP_SPEAKER,
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/*_assocTerm*/ UAC2_ENTITY_INPUT_TERMINAL,
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/*_srcid*/ UAC2_ENTITY_FEATURE_UNIT,
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/*_clkid*/ UAC2_ENTITY_CLOCK,
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/*_ctrl*/ 0x0000,
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/*_stridx*/ 0x00),
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/* Feature Unit Descriptor(4.7.2.8) */
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TUD_AUDIO_DESC_FEATURE_UNIT_TWO_CHANNEL(
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/*_unitid*/ UAC2_ENTITY_FEATURE_UNIT,
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/*_srcid*/ UAC2_ENTITY_INPUT_TERMINAL,
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/*_ctrlch0master*/ AUDIO_CTRL_RW << AUDIO_FEATURE_UNIT_CTRL_MUTE_POS | AUDIO_CTRL_RW << AUDIO_FEATURE_UNIT_CTRL_VOLUME_POS,
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/*_ctrlch1*/ AUDIO_CTRL_RW << AUDIO_FEATURE_UNIT_CTRL_MUTE_POS | AUDIO_CTRL_RW << AUDIO_FEATURE_UNIT_CTRL_VOLUME_POS,
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/*_ctrlch2*/ AUDIO_CTRL_RW << AUDIO_FEATURE_UNIT_CTRL_MUTE_POS | AUDIO_CTRL_RW << AUDIO_FEATURE_UNIT_CTRL_VOLUME_POS,
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/*_stridx*/ 0x00),
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/* Standard AS Interface Descriptor(4.9.1) */
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/* Interface 1, Alternate 0 - default alternate setting with 0 bandwidth */ \
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TUD_AUDIO_DESC_STD_AS_INT(/*_itfnum*/ 1, /*_altset*/ 0x00, /*_nEPs*/ 0x00, /*_stridx*/ STRID_AUDIO_INTERFACE),
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/* Standard AS Interface Descriptor(4.9.1) */
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/* Interface 1, Alternate 1 - alternate interface for data streaming */ \
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TUD_AUDIO_DESC_STD_AS_INT(/*_itfnum*/ 1, /*_altset*/ 0x01, /*_nEPs*/ 0x02, /*_stridx*/ STRID_AUDIO_INTERFACE),
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/* Class-Specific AS Interface Descriptor(4.9.2) */
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TUD_AUDIO_DESC_CS_AS_INT(
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/*_termid*/ UAC2_ENTITY_INPUT_TERMINAL,
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/*_ctrl*/ AUDIO_CTRL_NONE,
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/*_formattype*/ AUDIO_FORMAT_TYPE_I,
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/*_formats*/ AUDIO_DATA_FORMAT_TYPE_I_PCM,
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/*_nchannelsphysical*/ 0x02,
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/*_channelcfg*/ AUDIO_CHANNEL_CONFIG_NON_PREDEFINED,
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/*_stridx*/ 0x00),
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/* Type I Format Type Descriptor(2.3.1.6 - Audio Formats) */
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TUD_AUDIO_DESC_TYPE_I_FORMAT(CFG_TUD_AUDIO_FUNC_1_FORMAT_1_N_BYTES_PER_SAMPLE_RX, CFG_TUD_AUDIO_FUNC_1_FORMAT_1_RESOLUTION_RX),
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/* Standard AS Isochronous Audio Data Endpoint Descriptor(4.10.1.1) */
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TUD_AUDIO_DESC_STD_AS_ISO_EP(
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/*_ep*/ EPNUM_AUDIO_OUT,
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/*_attr*/ (uint8_t) ((uint8_t)TUSB_XFER_ISOCHRONOUS | (uint8_t)TUSB_ISO_EP_ATT_ASYNCHRONOUS | (uint8_t)TUSB_ISO_EP_ATT_DATA),
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/*_maxEPsize*/ CFG_TUD_AUDIO_FUNC_1_EP_OUT_SZ_MAX,
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/*_interval*/ 0x01),
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/* Class-Specific AS Isochronous Audio Data Endpoint Descriptor(4.10.1.2) */
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TUD_AUDIO_DESC_CS_AS_ISO_EP(
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/*_attr*/ AUDIO_CS_AS_ISO_DATA_EP_ATT_NON_MAX_PACKETS_OK,
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/*_ctrl*/ AUDIO_CTRL_NONE,
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/*_lockdelayunit*/ AUDIO_CS_AS_ISO_DATA_EP_LOCK_DELAY_UNIT_MILLISEC,
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/*_lockdelay*/ 0x0001),
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/* Standard AS Isochronous Feedback Endpoint Descriptor(4.10.2.1) */
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TUD_AUDIO_DESC_STD_AS_ISO_FB_EP(/*_ep*/ EPNUM_AUDIO_FB | 0x80, /*_epsize*/ 4, /*_interval*/ 1)
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};
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return configurationDescriptor;
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}
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const u16* tud_descriptor_string_cb(u8 index, u16 langid)
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{
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switch (index)
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{
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case STRID_LANGID:
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{
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static const UsbStringDescriptor<2> descriptor(0x0409);
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return (const u16*)&descriptor;
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}
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case STRID_MANUFACTURER:
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{
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return USB_STRING_DESCRIPTOR(u"LNH");
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}
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case STRID_PRODUCT:
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{
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return USB_STRING_DESCRIPTOR(u"DSpico Speaker Example");
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}
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case STRID_SERIAL:
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{
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return USB_STRING_DESCRIPTOR(u"123456789");
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}
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case STRID_AUDIO_INTERFACE:
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{
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return USB_STRING_DESCRIPTOR(u"DSpico Speakers");
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}
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default:
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{
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return nullptr;
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}
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}
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}
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