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| //------------------------------------------------------------------------------ | ||
| // Copyright (c) 2024 John D. Haughton | ||
| // | ||
| // 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. | ||
| //------------------------------------------------------------------------------ | ||
| // \brief USB descriptors | ||
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| #pragma once | ||
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| #include <cstdint> | ||
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| #include "STB/List.h" | ||
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| namespace USB { | ||
|
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| // Device and interface class codes | ||
| enum Class : uint8_t | ||
| { | ||
| CLASS_INFO_IN_IFC = 0x00, | ||
| CLASS_AUDIO = 0x01, | ||
| CLASS_COMMS = 0x02, | ||
| CLASS_HID = 0x03, | ||
| CLASS_MASS_STORAGE = 0x08, | ||
| CLASS_VENDOR_SPEC = 0xFF | ||
| }; | ||
|
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| // Got to use something! | ||
| static const uint16_t DUMMY_VENDOR_ID = 0xC0DE; | ||
|
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| // Descriptor type codes | ||
| enum DescrType : uint8_t | ||
| { | ||
| TYPE_DEVICE = 0x01, | ||
| TYPE_CONFIG = 0x02, | ||
| TYPE_STRING = 0x03, | ||
| TYPE_INTERFACE = 0x04, | ||
| TYPE_ENDPOINT = 0x05, | ||
| TYPE_CS_INTERFACE = 0x24, | ||
| TYPE_CS_ENDPOINT = 0x25 | ||
| }; | ||
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| //! Base class for list element descriptors | ||
| class Descr : public STB::List<Descr>::Element | ||
| { | ||
| public: | ||
| using List = STB::List<Descr>; | ||
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| Descr() = default; | ||
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| Descr(const uint8_t& length_) | ||
| : raw(&length_) | ||
| { | ||
| } | ||
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| Descr(List& list_, const uint8_t& length_) | ||
| : raw(&length_) | ||
| { | ||
| list_.push_back(this); | ||
| } | ||
|
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| //! Set option implementation pointer | ||
| void setImpl(void* impl_) { impl = impl_; } | ||
|
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| //! Returns pointer to first byte in descriptor | ||
| const uint8_t* getRaw() const { return raw; } | ||
|
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| //! Returns length of descriptor as a reference | ||
| const uint8_t& getLength() const { return raw[0]; } | ||
|
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| //! Returns type of descriptor | ||
| DescrType getType() const { return DescrType(raw[1]); } | ||
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| void* getImpl() const { return impl; } | ||
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| private: | ||
| const uint8_t* raw{}; | ||
| void* impl{nullptr}; | ||
| }; | ||
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| struct DeviceDescr | ||
| { | ||
| DeviceDescr() = default; | ||
|
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| uint8_t length{0x12}; | ||
| uint8_t type{TYPE_DEVICE}; | ||
| uint16_t usb_bcd{0x200}; // USB 2.0 | ||
| uint8_t clas{CLASS_INFO_IN_IFC}; | ||
| uint8_t sub_class{0}; | ||
| uint8_t protocol{0}; | ||
| uint8_t max_packet_size0{64}; | ||
| uint16_t vendor_id{DUMMY_VENDOR_ID}; | ||
| uint16_t product_id{0x0001}; | ||
| uint16_t device_bcd{0x0100}; // 1.0 | ||
| uint8_t vendor_idx{0}; | ||
| uint8_t product_idx{0}; | ||
| uint8_t serial_num_idx{0}; | ||
| uint8_t num_configs{0}; | ||
|
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| } __attribute__((__packed__)); | ||
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| struct ConfigDescr | ||
| { | ||
| ConfigDescr() = default; | ||
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| uint8_t length{9}; | ||
| uint8_t type{TYPE_CONFIG}; | ||
| uint16_t total_length{0}; | ||
| uint8_t num_interfaces{0}; | ||
| uint8_t value{1}; | ||
| uint8_t name_idx{0}; | ||
| uint8_t attributes{0b10100000}; | ||
| uint8_t max_power{50}; | ||
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| } __attribute__((__packed__)); | ||
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| struct InterfaceDescr : public Descr | ||
| { | ||
| InterfaceDescr() = default; | ||
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| InterfaceDescr(List& list_, uint8_t class_, uint8_t sub_class_, uint8_t protocol_ = 0) | ||
| : Descr(list_, length) | ||
| , clas(class_) | ||
| , sub_class(sub_class_) | ||
| , protocol(protocol_) | ||
| { | ||
| } | ||
|
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| uint8_t length{9}; | ||
| uint8_t type{TYPE_INTERFACE}; | ||
| uint8_t number{0}; | ||
| uint8_t alternate_setting{0}; | ||
| uint8_t num_endpoints{0}; | ||
| uint8_t clas{CLASS_VENDOR_SPEC}; | ||
| uint8_t sub_class{0}; | ||
| uint8_t protocol{0}; | ||
| uint8_t name_idx{0}; | ||
|
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| } __attribute__((__packed__)); | ||
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| struct EndPointDescr : public Descr | ||
| { | ||
| // Direction | ||
| static const uint8_t OUT = 0b00000000; | ||
| static const uint8_t IN = 0b10000000; | ||
|
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| // Type | ||
| static const uint8_t CONTROL = 0b00; | ||
| static const uint8_t ISOCHrONOUS = 0b00; | ||
| static const uint8_t BULK = 0b10; | ||
| static const uint8_t INTERRUPt = 0b11; | ||
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| EndPointDescr(List& list_, uint8_t dir_, uint8_t type_) | ||
| : Descr(list_, length) | ||
| , addr(dir_) | ||
| , attr(uint8_t(type_)) | ||
| { | ||
| } | ||
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| uint8_t length{7}; | ||
| uint8_t type{TYPE_ENDPOINT}; | ||
| uint8_t addr{0}; | ||
| uint8_t attr{0}; | ||
| uint16_t max_packet_size{64}; | ||
| uint8_t interval{0}; | ||
|
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| } __attribute__((__packed__)); | ||
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| } // namespace USB |
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