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#ifndef GAMEPAD_KEYS_H
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#define GAMEPAD_KEYS_H
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/**
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* @file gamepad_keys.h
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* @brief Defines structures and constants related to gamepad keys and data.
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*/
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#include <cstddef>
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#include <cstdint>
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#include <cmath>
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#include <array>
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/** @brief Size of the header in bytes. */
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const size_t kHeaderSize = 2;
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/** @brief Total number of channels for gamepad keys. */
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const size_t kChannlSize = 16;
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/** @brief Number of channels dedicated to axis values in the gamepad data. */
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const size_t kAxisChannlSize = 4;
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/** @brief Number of channels dedicated to axis buttons in the gamepad data. */
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const size_t kAxisButtonSize = 2;
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const size_t kSwitchKeysSize = 4;
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/** @brief Maximum range of the joystick axis values. */
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const uint16_t kJoystickRange = 1000;
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/** @brief Default UDP port for gamepad data reception. */
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const uint16_t kDefaultPort = 12121;
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/** @brief Header bytes for identifying gamepad data. */
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const unsigned char kHeader[kHeaderSize] = {0x55, 0x66};
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const size_t kRetroidButtonSize = 10;
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const size_t kSkydroidButtonSize = 8;
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/** @brief Enumerates different types of gamepads. */
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enum class GamepadType {
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kRetroid = 1, /**< RETROID gamepad type. */
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kSkydroid = 2,
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};
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/** @brief Enumerates the status of keys, whether pressed or released. */
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enum class KeyStatus {
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kReleased = 0, /**< Key is released. */
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kPressed = 1, /**< Key is pressed. */
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};
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/**
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* @brief Structure representing the keys of a Retroid gamepad.
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*/
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struct RetroidKeys {
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double time_stamp;
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union {
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uint16_t value; /**< Union to represent the keys as a single value. */
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struct {
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uint8_t R1 : 1; /**< R1 button. */
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uint8_t L1 : 1; /**< L1 button. */
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uint8_t start : 1; /**< Start button. */
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uint8_t select : 1; /**< Select button. */
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uint8_t R2 : 1; /**< R2 button. */
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uint8_t L2 : 1; /**< L2 button. */
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uint8_t A : 1; /**< A button. */
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uint8_t B : 1; /**< B button. */
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uint8_t X : 1; /**< X button. */
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uint8_t Y : 1; /**< Y button. */
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uint8_t left : 1; /**< Left button on the directional pad. */
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uint8_t right : 1; /**< Right button on the directional pad. */
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uint8_t up : 1; /**< Up button on the directional pad. */
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uint8_t down : 1; /**< Down button on the directional pad. */
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uint8_t left_axis_button : 1; /**< Left analog stick button. */
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uint8_t right_axis_button : 1; /**< Right analog stick button. */
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};
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};
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union {
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float axis_values[kAxisChannlSize]; /**< Array representing axis values. */
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struct {
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float left_axis_x; /**< X-axis value of the left analog stick. */
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float left_axis_y; /**< Y-axis value of the left analog stick. */
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float right_axis_x; /**< X-axis value of the right analog stick. */
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float right_axis_y; /**< Y-axis value of the right analog stick. */
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};
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};
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};
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/**
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* @brief Structure representing the keys of a Skydroid Gamepad.
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*/
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struct SkydroidKeys {
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double time_stamp;
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union {
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uint8_t keys_value; /**< Union to represent the button as a single value. */
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struct {
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uint8_t C : 1; /**< C button. */
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uint8_t right : 1; /**< right button. */
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uint8_t D : 1; /**< D button. */
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uint8_t E : 1; /**< E button. */
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uint8_t F : 1; /**< F button. */
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uint8_t reserved : 1; /**< reserved. */
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uint8_t A : 1; /**< A button. */
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uint8_t B : 1; /**< B button. */
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};
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};
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union {
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uint8_t switch_keys[kSwitchKeysSize]; /**< Array representing switch_keys values. */
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struct {
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uint8_t sw1 ; /**< switch_key1 */
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uint8_t sw2 ; /**< switch_key2 */
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uint8_t sw3 ; /**< switch_key3 */
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uint8_t sw4 ; /**< switch_key4 */
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};
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};
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union {
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float axis_values[kAxisChannlSize]; /**< Array representing axis values. */
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struct {
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float left_axis_x; /**< X-axis value of the left analog stick. */
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float left_axis_y; /**< Y-axis value of the left analog stick. */
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float right_axis_x; /**< X-axis value of the right analog stick. */
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float right_axis_y; /**< Y-axis value of the right analog stick. */
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};
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};
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};
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#pragma pack(1)
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/**
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* @brief Structure representing the complete gamepad data packet.
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*/
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struct RetroidGamepadData {
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uint8_t stx[kHeaderSize]; /**< Start-of-text bytes for identifying the start of data. */
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uint8_t ctrl; /**< Control byte for additional flags or information. */
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uint16_t data_len; /**< Length of the data in the packet. */
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uint16_t seq; /**< Sequence number for tracking packet order or identifying duplicates. */
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uint8_t id; /**< Identifier for the type of gamepad. */
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uint16_t crc16; /**< CRC-16 checksum for data integrity verification. */
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union {
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uint8_t data[kChannlSize * sizeof(uint16_t)]; /**< Array representing raw data channels. */
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struct {
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uint16_t buttons[kRetroidButtonSize]; /**< Array representing button values. */
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int16_t left_axis_x; /**< X-axis value of the left analog stick. */
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int16_t left_axis_y; /**< Y-axis value of the left analog stick. */
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int16_t right_axis_x; /**< X-axis value of the right analog stick. */
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int16_t right_axis_y; /**< Y-axis value of the right analog stick. */
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uint16_t axis_buttons[kAxisButtonSize]; /**< Array representing axis button values. */
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};
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};
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};
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#pragma pack()
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#pragma pack(1)
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/**
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* @brief Structure representing the complete Gamepad data packet.
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*/
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struct SkydroidGamepadData {
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uint8_t stx[kHeaderSize]; /**< Start-of-text bytes for identifying the start of data. */
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uint8_t ctrl; /**< Control byte for additional flags or information. */
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uint16_t data_len; /**< Length of the data in the packet. */
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uint16_t seq; /**< Sequence number for tracking packet order or identifying duplicates. */
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uint8_t id; /**< Identifier for the type of Gamepad. */
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uint16_t crc16; /**< CRC-16 checksum for data integrity verification. */
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union {
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uint8_t data[kChannlSize * sizeof(uint16_t)]; /**< Array representing raw data channels. */
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struct {
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int16_t right_axis_x; /**< X-axis value of the right analog stick. */
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int16_t right_axis_y; /**< Y-axis value of the right analog stick. */
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int16_t left_axis_y; /**< Y-axis value of the left analog stick. */
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int16_t left_axis_x; /**< X-axis value of the left analog stick. */
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uint16_t switch_keys[kSwitchKeysSize]; /**< Array representing switch_keys values. */
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uint16_t buttons[kSkydroidButtonSize]; /**< Array representing button values. */
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};
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};
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};
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#pragma pack()
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#endif
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