198 lines
7.0 KiB
C
198 lines
7.0 KiB
C
/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2019 Ha Thach (tinyusb.org)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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*/
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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] NET1:NET0 | VENDOR | 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(VENDOR, 4) | _PID_MAP(NET, 5) )
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// String Descriptor Index
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enum
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{
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STRID_LANGID = 0,
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STRID_MANUFACTURER,
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STRID_PRODUCT,
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STRID_SERIAL,
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STRID_INTERFACE,
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STRID_MAC
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};
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//--------------------------------------------------------------------+
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// Device Descriptors
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//--------------------------------------------------------------------+
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tusb_desc_device_t const desc_device =
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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 = 0x0200,
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.bDeviceClass = TUSB_CLASS_UNSPECIFIED,
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.bDeviceSubClass = 0,
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.bDeviceProtocol = 0,
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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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// Invoked when received GET DEVICE DESCRIPTOR
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// Application return pointer to descriptor
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uint8_t const * tud_descriptor_device_cb(void)
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{
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return (uint8_t const *) &desc_device;
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}
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//--------------------------------------------------------------------+
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// Configuration Descriptor
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//--------------------------------------------------------------------+
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enum
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{
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ITF_NUM_CDC = 0,
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ITF_NUM_CDC_DATA,
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ITF_NUM_TOTAL
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};
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#if CFG_TUD_NET == OPT_NET_ECM
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#define CONFIG_TOTAL_LEN (TUD_CONFIG_DESC_LEN + TUD_CDC_ECM_DESC_LEN)
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#elif CFG_TUD_NET == OPT_NET_RNDIS
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#define CONFIG_TOTAL_LEN (TUD_CONFIG_DESC_LEN + TUD_RNDIS_DESC_LEN)
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#elif CFG_TUD_NET == OPT_NET_EEM
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#define CONFIG_TOTAL_LEN (TUD_CONFIG_DESC_LEN + TUD_CDC_EEM_DESC_LEN)
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#endif
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#if CFG_TUSB_MCU == OPT_MCU_LPC175X_6X || CFG_TUSB_MCU == OPT_MCU_LPC177X_8X || CFG_TUSB_MCU == OPT_MCU_LPC40XX
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// LPC 17xx and 40xx endpoint type (bulk/interrupt/iso) are fixed by its number
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// 0 control, 1 In, 2 Bulk, 3 Iso, 4 In etc ...
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#define EPNUM_CDC 2
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#else
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#define EPNUM_CDC 2
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#endif
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uint8_t const desc_configuration[] =
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{
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// Interface count, string index, total length, attribute, power in mA
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TUD_CONFIG_DESCRIPTOR(ITF_NUM_TOTAL, 0, CONFIG_TOTAL_LEN, 0, 100),
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#if CFG_TUD_NET == OPT_NET_ECM
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// Interface number, description string index, MAC address string index, EP notification address and size, EP data address (out, in), and size, max segment size.
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TUD_CDC_ECM_DESCRIPTOR(ITF_NUM_CDC, STRID_INTERFACE, STRID_MAC, 0x81, 64, EPNUM_CDC, 0x80 | EPNUM_CDC, CFG_TUD_NET_ENDPOINT_SIZE, CFG_TUD_NET_MTU),
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#elif CFG_TUD_NET == OPT_NET_RNDIS
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// Interface number, string index, EP notification address and size, EP data address (out, in) and size.
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TUD_RNDIS_DESCRIPTOR(ITF_NUM_CDC, STRID_INTERFACE, 0x81, 8, EPNUM_CDC, 0x80 | EPNUM_CDC, CFG_TUD_NET_ENDPOINT_SIZE),
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#elif CFG_TUD_NET == OPT_NET_EEM
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// Interface number, description string index, EP data address (out, in) and size.
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TUD_CDC_EEM_DESCRIPTOR(ITF_NUM_CDC, STRID_INTERFACE, EPNUM_CDC, 0x80 | EPNUM_CDC, CFG_TUD_NET_ENDPOINT_SIZE),
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#endif
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};
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// Invoked when received GET CONFIGURATION DESCRIPTOR
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// Application return pointer to descriptor
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// Descriptor contents must exist long enough for transfer to complete
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uint8_t const * tud_descriptor_configuration_cb(uint8_t index)
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{
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(void) index; // for multiple configurations
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return desc_configuration;
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}
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//--------------------------------------------------------------------+
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// String Descriptors
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//--------------------------------------------------------------------+
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// array of pointer to string descriptors
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static char const* string_desc_arr [] =
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{
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[STRID_LANGID] = (const char[]) { 0x09, 0x04 }, // supported language is English (0x0409)
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[STRID_MANUFACTURER] = "TinyUSB", // Manufacturer
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[STRID_PRODUCT] = "TinyUSB Device", // Product
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[STRID_SERIAL] = "123456", // Serials
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[STRID_INTERFACE] = "TinyUSB Network Interface" // CDC-ECM Interface
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// STRID_MAC index is handled separately
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};
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static uint16_t _desc_str[32];
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// Invoked when received GET STRING DESCRIPTOR request
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// Application return pointer to descriptor, whose contents must exist long enough for transfer to complete
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uint16_t const* tud_descriptor_string_cb(uint8_t index, uint16_t langid)
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{
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(void) langid;
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unsigned int chr_count = 0;
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if (STRID_LANGID == index)
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{
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memcpy(&_desc_str[1], string_desc_arr[STRID_LANGID], 2);
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chr_count = 1;
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}
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else if (STRID_MAC == index)
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{
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// Convert MAC address into UTF-16
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for (unsigned i=0; i<sizeof(tud_network_mac_address); i++)
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{
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_desc_str[1+chr_count++] = "0123456789ABCDEF"[(tud_network_mac_address[i] >> 4) & 0xf];
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_desc_str[1+chr_count++] = "0123456789ABCDEF"[(tud_network_mac_address[i] >> 0) & 0xf];
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}
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}
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else
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{
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// Convert ASCII string into UTF-16
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if ( !(index < sizeof(string_desc_arr)/sizeof(string_desc_arr[0])) ) return NULL;
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const char* str = string_desc_arr[index];
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// Cap at max char
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chr_count = strlen(str);
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if ( chr_count > (TU_ARRAY_SIZE(_desc_str) - 1)) chr_count = TU_ARRAY_SIZE(_desc_str) - 1;
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for (unsigned int i=0; i<chr_count; i++)
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{
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_desc_str[1+i] = str[i];
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}
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}
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// first byte is length (including header), second byte is string type
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_desc_str[0] = (TUSB_DESC_STRING << 8 ) | (2*chr_count + 2);
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return _desc_str;
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}
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