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Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>
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Pol Henarejos
2026-04-16 19:49:22 +02:00
parent 8821728cc7
commit 194b48773a
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src/usb/lwip/usb_descriptors.c
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/*
* The MIT License (MIT)
*
* Copyright (c) 2019 Ha Thach (tinyusb.org)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
*/
#include "bsp/board_api.h"
#include "class/net/net_device.h"
#include "tusb.h"
/* A combination of interfaces must have a unique product id, since PC will save device driver after the first plug.
* Same VID/PID with different interface e.g MSC (first), then CDC (later) will possibly cause system error on PC.
*
* Auto ProductID layout's Bitmap:
* [MSB] NET | VENDOR | MIDI | HID | MSC | CDC [LSB]
*/
#define PID_MAP(itf, n) ((CFG_TUD_##itf) ? (1 << (n)) : 0)
#define USB_PID \
(0x4000 | PID_MAP(CDC, 0) | PID_MAP(MSC, 1) | PID_MAP(HID, 2) | PID_MAP(MIDI, 3) | PID_MAP(VENDOR, 4) | \
PID_MAP(ECM_RNDIS, 5) | PID_MAP(NCM, 5))
// String Descriptor Index
enum {
STRID_LANGID = 0,
STRID_MANUFACTURER,
STRID_PRODUCT,
STRID_SERIAL,
STRID_INTERFACE,
STRID_MAC,
STRID_COUNT
};
enum {
ITF_NUM_CDC = 0,
ITF_NUM_CDC_DATA,
ITF_NUM_TOTAL
};
enum {
#if CFG_TUD_ECM_RNDIS
CONFIG_ID_RNDIS = 0,
CONFIG_ID_ECM = 1,
#else
CONFIG_ID_NCM = 0,
#endif
CONFIG_ID_COUNT
};
//--------------------------------------------------------------------+
// Device Descriptors
//--------------------------------------------------------------------+
static const tusb_desc_device_t desc_device = {
.bLength = sizeof(tusb_desc_device_t),
.bDescriptorType = TUSB_DESC_DEVICE,
#if CFG_TUD_NCM
.bcdUSB = 0x0201,
#else
.bcdUSB = 0x0200,
#endif
// Use Interface Association Descriptor (IAD) device class
.bDeviceClass = TUSB_CLASS_MISC,
.bDeviceSubClass = MISC_SUBCLASS_COMMON,
.bDeviceProtocol = MISC_PROTOCOL_IAD,
.bMaxPacketSize0 = CFG_TUD_ENDPOINT0_SIZE,
.idVendor = 0xCafe,
.idProduct = USB_PID,
.bcdDevice = 0x0101,
.iManufacturer = STRID_MANUFACTURER,
.iProduct = STRID_PRODUCT,
.iSerialNumber = STRID_SERIAL,
.bNumConfigurations = CONFIG_ID_COUNT // multiple configurations
};
// Invoked when received GET DEVICE DESCRIPTOR
// Application return pointer to descriptor
const uint8_t *tud_descriptor_device_cb(void) {
return (const uint8_t *)&desc_device;
}
//--------------------------------------------------------------------+
// Configuration Descriptor
//--------------------------------------------------------------------+
#define MAIN_CONFIG_TOTAL_LEN (TUD_CONFIG_DESC_LEN + TUD_RNDIS_DESC_LEN)
#define ALT_CONFIG_TOTAL_LEN (TUD_CONFIG_DESC_LEN + TUD_CDC_ECM_DESC_LEN)
#define NCM_CONFIG_TOTAL_LEN (TUD_CONFIG_DESC_LEN + TUD_CDC_NCM_DESC_LEN)
#if CFG_TUSB_MCU == OPT_MCU_LPC175X_6X || CFG_TUSB_MCU == OPT_MCU_LPC177X_8X || CFG_TUSB_MCU == OPT_MCU_LPC40XX
// LPC 17xx and 40xx endpoint type (bulk/interrupt/iso) are fixed by its number
// 0 control, 1 In, 2 Bulk, 3 Iso, 4 In etc ...
#define EPNUM_NET_NOTIF 0x81
#define EPNUM_NET_OUT 0x02
#define EPNUM_NET_IN 0x82
#elif CFG_TUSB_MCU == OPT_MCU_CXD56
// CXD56 USB driver has fixed endpoint type (bulk/interrupt/iso) and direction (IN/OUT) by its number
// 0 control (IN/OUT), 1 Bulk (IN), 2 Bulk (OUT), 3 In (IN), 4 Bulk (IN), 5 Bulk (OUT), 6 In (IN)
#define EPNUM_NET_NOTIF 0x83
#define EPNUM_NET_OUT 0x02
#define EPNUM_NET_IN 0x81
#elif defined(TUD_ENDPOINT_ONE_DIRECTION_ONLY)
// MCUs that don't support a same endpoint number with different direction IN and OUT defined in tusb_mcu.h
// e.g EP1 OUT & EP1 IN cannot exist together
#define EPNUM_NET_NOTIF 0x81
#define EPNUM_NET_OUT 0x02
#define EPNUM_NET_IN 0x83
#else
#define EPNUM_NET_NOTIF 0x81
#define EPNUM_NET_OUT 0x02
#define EPNUM_NET_IN 0x82
#endif
#if CFG_TUD_ECM_RNDIS
static uint8_t const rndis_configuration[] = {
// Config number (index+1), interface count, string index, total length, attribute, power in mA
TUD_CONFIG_DESCRIPTOR(CONFIG_ID_RNDIS + 1, ITF_NUM_TOTAL, 0, MAIN_CONFIG_TOTAL_LEN, 0, 100),
// Interface number, string index, EP notification address and size, EP data address (out, in) and size.
TUD_RNDIS_DESCRIPTOR(
ITF_NUM_CDC, STRID_INTERFACE, EPNUM_NET_NOTIF, 8, EPNUM_NET_OUT, EPNUM_NET_IN, CFG_TUD_NET_ENDPOINT_SIZE),
};
static const uint8_t ecm_configuration[] = {
// Config number (index+1), interface count, string index, total length, attribute, power in mA
TUD_CONFIG_DESCRIPTOR(CONFIG_ID_ECM + 1, ITF_NUM_TOTAL, 0, ALT_CONFIG_TOTAL_LEN, 0, 100),
// Interface number, description string index, MAC address string index, EP notification address and size, EP data address (out, in), and size, max segment size.
TUD_CDC_ECM_DESCRIPTOR(
ITF_NUM_CDC, STRID_INTERFACE, STRID_MAC, EPNUM_NET_NOTIF, 64, EPNUM_NET_OUT, EPNUM_NET_IN,
CFG_TUD_NET_ENDPOINT_SIZE, CFG_TUD_NET_MTU),
};
#else
static uint8_t const ncm_configuration[] = {
// Config number (index+1), interface count, string index, total length, attribute, power in mA
TUD_CONFIG_DESCRIPTOR(CONFIG_ID_NCM + 1, ITF_NUM_TOTAL, 0, NCM_CONFIG_TOTAL_LEN, 0, 100),
// Interface number, description string index, MAC address string index, EP notification address and size, EP data address (out, in), and size, max segment size.
TUD_CDC_NCM_DESCRIPTOR(
ITF_NUM_CDC, STRID_INTERFACE, STRID_MAC, EPNUM_NET_NOTIF, 64, EPNUM_NET_OUT, EPNUM_NET_IN,
CFG_TUD_NET_ENDPOINT_SIZE, CFG_TUD_NET_MTU),
};
#endif
// Configuration array: RNDIS and CDC-ECM
// - Windows only works with RNDIS
// - MacOS only works with CDC-ECM
// - Linux will work on both
static const uint8_t *const configuration_arr[CONFIG_ID_COUNT] = {
#if CFG_TUD_ECM_RNDIS
[CONFIG_ID_RNDIS] = rndis_configuration,
[CONFIG_ID_ECM] = ecm_configuration
#else
[CONFIG_ID_NCM] = ncm_configuration
#endif
};
// Invoked when received GET CONFIGURATION DESCRIPTOR
// Application return pointer to descriptor
// Descriptor contents must exist long enough for transfer to complete
const uint8_t *tud_descriptor_configuration_cb(uint8_t index) {
return (index < CONFIG_ID_COUNT) ? configuration_arr[index] : NULL;
}
#if CFG_TUD_NCM
//--------------------------------------------------------------------+
// BOS Descriptor
//--------------------------------------------------------------------+
/* Used to automatically load the NCM driver on Windows 10, otherwise manual driver install is needed.
Associate NCM interface with WINNCM driver. */
/* Microsoft OS 2.0 registry property descriptor
Per MS requirements https://msdn.microsoft.com/en-us/library/windows/hardware/hh450799(v=vs.85).aspx
device should create DeviceInterfaceGUIDs. It can be done by driver and
in case of real PnP solution device should expose MS "Microsoft OS 2.0
registry property descriptor". Such descriptor can insert any record
into Windows registry per device/configuration/interface. In our case it
will insert "DeviceInterfaceGUIDs" multistring property.
GUID is freshly generated and should be OK to use.
https://developers.google.com/web/fundamentals/native-hardware/build-for-webusb/
(Section Microsoft OS compatibility descriptors)
*/
#define BOS_TOTAL_LEN (TUD_BOS_DESC_LEN + TUD_BOS_MICROSOFT_OS_DESC_LEN)
#define MS_OS_20_DESC_LEN 0xB2
// BOS Descriptor is required for webUSB
const uint8_t desc_bos[] = {
// total length, number of device caps
TUD_BOS_DESCRIPTOR(BOS_TOTAL_LEN, 1),
// Microsoft OS 2.0 descriptor
TUD_BOS_MS_OS_20_DESCRIPTOR(MS_OS_20_DESC_LEN, 1)};
const uint8_t *tud_descriptor_bos_cb(void) {
return desc_bos;
}
const uint8_t desc_ms_os_20[] = {
// Set header: length, type, windows version, total length
U16_TO_U8S_LE(0x000A), U16_TO_U8S_LE(MS_OS_20_SET_HEADER_DESCRIPTOR), U32_TO_U8S_LE(0x06030000),
U16_TO_U8S_LE(MS_OS_20_DESC_LEN),
// Configuration subset header: length, type, configuration index, reserved, configuration total length
U16_TO_U8S_LE(0x0008), U16_TO_U8S_LE(MS_OS_20_SUBSET_HEADER_CONFIGURATION), 0, 0,
U16_TO_U8S_LE(MS_OS_20_DESC_LEN - 0x0A),
// Function Subset header: length, type, first interface, reserved, subset length
U16_TO_U8S_LE(0x0008), U16_TO_U8S_LE(MS_OS_20_SUBSET_HEADER_FUNCTION), ITF_NUM_CDC, 0,
U16_TO_U8S_LE(MS_OS_20_DESC_LEN - 0x0A - 0x08),
// MS OS 2.0 Compatible ID descriptor: length, type, compatible ID, sub compatible ID
U16_TO_U8S_LE(0x0014), U16_TO_U8S_LE(MS_OS_20_FEATURE_COMPATBLE_ID), 'W', 'I', 'N', 'N', 'C', 'M', 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // sub-compatible
// MS OS 2.0 Registry property descriptor: length, type
U16_TO_U8S_LE(MS_OS_20_DESC_LEN - 0x0A - 0x08 - 0x08 - 0x14), U16_TO_U8S_LE(MS_OS_20_FEATURE_REG_PROPERTY),
U16_TO_U8S_LE(0x0007),
U16_TO_U8S_LE(0x002A), // wPropertyDataType, wPropertyNameLength and PropertyName "DeviceInterfaceGUIDs\0" in UTF-16
'D', 0x00, 'e', 0x00, 'v', 0x00, 'i', 0x00, 'c', 0x00, 'e', 0x00, 'I', 0x00, 'n', 0x00, 't', 0x00, 'e', 0x00, 'r',
0x00, 'f', 0x00, 'a', 0x00, 'c', 0x00, 'e', 0x00, 'G', 0x00, 'U', 0x00, 'I', 0x00, 'D', 0x00, 's', 0x00, 0x00, 0x00,
U16_TO_U8S_LE(0x0050), // wPropertyDataLength
//bPropertyData: {12345678-0D08-43FD-8B3E-127CA8AFFF9D}
'{', 0x00, '1', 0x00, '2', 0x00, '3', 0x00, '4', 0x00, '5', 0x00, '6', 0x00, '7', 0x00, '8', 0x00, '-', 0x00, '0',
0x00, 'D', 0x00, '0', 0x00, '8', 0x00, '-', 0x00, '4', 0x00, '3', 0x00, 'F', 0x00, 'D', 0x00, '-', 0x00, '8', 0x00,
'B', 0x00, '3', 0x00, 'E', 0x00, '-', 0x00, '1', 0x00, '2', 0x00, '7', 0x00, 'C', 0x00, 'A', 0x00, '8', 0x00, 'A',
0x00, 'F', 0x00, 'F', 0x00, 'F', 0x00, '9', 0x00, 'D', 0x00, '}', 0x00, 0x00, 0x00, 0x00, 0x00};
TU_VERIFY_STATIC(sizeof(desc_ms_os_20) == MS_OS_20_DESC_LEN, "Incorrect size");
// Invoked when a control transfer occurred on an interface of this class
// Driver response accordingly to the request and the transfer stage (setup/data/ack)
// return false to stall control endpoint (e.g unsupported request)
bool tud_vendor_control_xfer_cb(uint8_t rhport, uint8_t stage, const tusb_control_request_t *request) {
// nothing to with DATA & ACK stage
if (stage != CONTROL_STAGE_SETUP) {
return true;
}
switch (request->bmRequestType_bit.type) {
case TUSB_REQ_TYPE_VENDOR:
switch (request->bRequest) {
case 1:
if (request->wIndex == 7) {
// Get Microsoft OS 2.0 compatible descriptor
uint16_t total_len;
memcpy(&total_len, desc_ms_os_20 + 8, 2);
return tud_control_xfer(rhport, request, (void *)(uintptr_t)desc_ms_os_20, total_len);
} else {
return false;
}
default:
break; // nothing to do
}
break;
default:
break; // nothing to do
}
// stall unknown request
return false;
}
#endif
//--------------------------------------------------------------------+
// String Descriptors
//--------------------------------------------------------------------+
// array of pointer to string descriptors
static const char *string_desc_arr[STRID_COUNT] = {
[STRID_LANGID] = (const char[]){0x09, 0x04}, // supported language is English (0x0409)
[STRID_MANUFACTURER] = "TinyUSB", // Manufacturer
[STRID_PRODUCT] = "TinyUSB Device", // Product
[STRID_SERIAL] = NULL, // Serials will use unique ID if possible
[STRID_INTERFACE] = "TinyUSB Network Interface", // Interface Description
[STRID_MAC] = NULL // STRID_MAC index is handled separately
};
static uint16_t _desc_str[32 + 1];
// Invoked when received GET STRING DESCRIPTOR request
// Application return pointer to descriptor, whose contents must exist long enough for transfer to complete
const uint16_t *tud_descriptor_string_cb(uint8_t index, uint16_t langid) {
(void)langid;
unsigned int chr_count = 0;
switch (index) {
case STRID_LANGID:
memcpy(&_desc_str[1], string_desc_arr[0], 2);
chr_count = 1;
break;
case STRID_SERIAL:
chr_count = board_usb_get_serial(_desc_str + 1, 32);
break;
case STRID_MAC:
// Convert MAC address into UTF-16
for (unsigned i = 0; i < sizeof(tud_network_mac_address); i++) {
_desc_str[1 + chr_count++] = "0123456789ABCDEF"[(tud_network_mac_address[i] >> 4) & 0xf];
_desc_str[1 + chr_count++] = "0123456789ABCDEF"[(tud_network_mac_address[i] >> 0) & 0xf];
}
break;
default: {
// Note: the 0xEE index string is a Microsoft OS 1.0 Descriptors.
// https://docs.microsoft.com/en-us/windows-hardware/drivers/usbcon/microsoft-defined-usb-descriptors
if (index >= sizeof(string_desc_arr) / sizeof(string_desc_arr[0])) {
return NULL;
}
const char *str = string_desc_arr[index];
// Cap at max char
chr_count = strlen(str);
const size_t max_count = sizeof(_desc_str) / sizeof(_desc_str[0]) - 1; // -1 for string type
if (chr_count > max_count) {
chr_count = max_count;
}
// Convert ASCII string into UTF-16
for (size_t i = 0; i < chr_count; i++) {
_desc_str[1 + i] = str[i];
}
break;
}
}
// first byte is length (including header), second byte is string type
_desc_str[0] = (uint16_t)((TUSB_DESC_STRING << 8) | (2 * chr_count + 2));
return _desc_str;
}