unleashed-firmware/firmware/targets/furi_hal_include/furi_hal_usb_hid.h

#pragma once

/** HID keyboard key codes */
enum HidKeyboardKeys {
    KEY_NONE = 0x00,
    KEY_ERROR_ROLLOVER = 0x01,
    KEY_POST_FAIL = 0x02,
    KEY_ERROR_UNDEFINED = 0x03,
    KEY_A = 0x04,
    KEY_B = 0x05,
    KEY_C = 0x06,
    KEY_D = 0x07,
    KEY_E = 0x08,
    KEY_F = 0x09,
    KEY_G = 0x0A,
    KEY_H = 0x0B,
    KEY_I = 0x0C,
    KEY_J = 0x0D,
    KEY_K = 0x0E,
    KEY_L = 0x0F,
    KEY_M = 0x10,
    KEY_N = 0x11,
    KEY_O = 0x12,
    KEY_P = 0x13,
    KEY_Q = 0x14,
    KEY_R = 0x15,
    KEY_S = 0x16,
    KEY_T = 0x17,
    KEY_U = 0x18,
    KEY_V = 0x19,
    KEY_W = 0x1A,
    KEY_X = 0x1B,
    KEY_Y = 0x1C,
    KEY_Z = 0x1D,
    KEY_1 = 0x1E,
    KEY_2 = 0x1F,
    KEY_3 = 0x20,
    KEY_4 = 0x21,
    KEY_5 = 0x22,
    KEY_6 = 0x23,
    KEY_7 = 0x24,
    KEY_8 = 0x25,
    KEY_9 = 0x26,
    KEY_0 = 0x27,
    KEY_ENTER = 0x28,
    KEY_ESC = 0x29,
    KEY_BACKSPACE = 0x2A,
    KEY_TAB = 0x2B,
    KEY_SPACE = 0x2C,
    KEY_MINUS = 0x2D,
    KEY_EQUAL = 0x2E,
    KEY_LEFT_BRACE = 0x2F,
    KEY_RIGHT_BRACE = 0x30,
    KEY_BACKSLASH = 0x31,
    KEY_NON_US_NUM = 0x32,
    KEY_SEMICOLON = 0x33,
    KEY_QUOTE = 0x34,
    KEY_TILDE = 0x35,
    KEY_COMMA = 0x36,
    KEY_PERIOD = 0x37,
    KEY_SLASH = 0x38,
    KEY_CAPS_LOCK = 0x39,
    KEY_F1 = 0x3A,
    KEY_F2 = 0x3B,
    KEY_F3 = 0x3C,
    KEY_F4 = 0x3D,
    KEY_F5 = 0x3E,
    KEY_F6 = 0x3F,
    KEY_F7 = 0x40,
    KEY_F8 = 0x41,
    KEY_F9 = 0x42,
    KEY_F10 = 0x43,
    KEY_F11 = 0x44,
    KEY_F12 = 0x45,
    KEY_PRINT = 0x46,
    KEY_SCROLL_LOCK = 0x47,
    KEY_PAUSE = 0x48,
    KEY_INSERT = 0x49,
    KEY_HOME = 0x4A,
    KEY_PAGE_UP = 0x4B,
    KEY_DELETE = 0x4C,
    KEY_END = 0x4D,
    KEY_PAGE_DOWN = 0x4E,
    KEY_RIGHT_ARROW = 0x4F,
    KEY_LEFT_ARROW = 0x50,
    KEY_DOWN_ARROW = 0x51,
    KEY_UP_ARROW = 0x52,
    KEY_NUM_LOCK = 0x53,
    KEYPAD_DIVIDE = 0x54,
    KEYPAD_MULTIPLY = 0x55,
    KEYPAD_SUBTRACT = 0x56,
    KEYPAD_ADD = 0x57,
    KEYPAD_ENTER = 0x58,
    KEYPAD_1 = 0x59,
    KEYPAD_2 = 0x5A,
    KEYPAD_3 = 0x5B,
    KEYPAD_4 = 0x5C,
    KEYPAD_5 = 0x5D,
    KEYPAD_6 = 0x5E,
    KEYPAD_7 = 0x5F,
    KEYPAD_8 = 0x60,
    KEYPAD_9 = 0x61,
    KEYPAD_0 = 0x62,
    KEYPAD_DOT = 0x63,
    KEY_NON_US = 0x64,
    KEY_APPLICATION = 0x65,
};

/** HID keyboard modifier keys */
enum HidKeyboardMods {
    KEY_MOD_LEFT_CTRL = (1 << 8),
    KEY_MOD_LEFT_SHIFT = (1 << 9),
    KEY_MOD_LEFT_ALT = (1 << 10),
    KEY_MOD_LEFT_GUI = (1 << 11),
    KEY_MOD_RIGHT_CTRL = (1 << 12),
    KEY_MOD_RIGHT_SHIFT = (1 << 13),
    KEY_MOD_RIGHT_ALT = (1 << 14),
    KEY_MOD_RIGHT_GUI = (1 << 15),
};

/** ASCII to keycode conversion table */
static const uint16_t hid_asciimap[] = {
    KEY_NONE, // NUL
    KEY_NONE, // SOH
    KEY_NONE, // STX
    KEY_NONE, // ETX
    KEY_NONE, // EOT
    KEY_NONE, // ENQ
    KEY_NONE, // ACK
    KEY_NONE, // BEL
    KEY_BACKSPACE, // BS   Backspace
    KEY_TAB, // TAB  Tab
    KEY_ENTER, // LF   Enter
    KEY_NONE, // VT
    KEY_NONE, // FF
    KEY_NONE, // CR
    KEY_NONE, // SO
    KEY_NONE, // SI
    KEY_NONE, // DEL
    KEY_NONE, // DC1
    KEY_NONE, // DC2
    KEY_NONE, // DC3
    KEY_NONE, // DC4
    KEY_NONE, // NAK
    KEY_NONE, // SYN
    KEY_NONE, // ETB
    KEY_NONE, // CAN
    KEY_NONE, // EM
    KEY_NONE, // SUB
    KEY_NONE, // ESC
    KEY_NONE, // FS
    KEY_NONE, // GS
    KEY_NONE, // RS
    KEY_NONE, // US
    KEY_SPACE, // ' ' Space
    KEY_1 | KEY_MOD_LEFT_SHIFT, // !
    KEY_QUOTE | KEY_MOD_LEFT_SHIFT, // "
    KEY_3 | KEY_MOD_LEFT_SHIFT, // #
    KEY_4 | KEY_MOD_LEFT_SHIFT, // $
    KEY_5 | KEY_MOD_LEFT_SHIFT, // %
    KEY_7 | KEY_MOD_LEFT_SHIFT, // &
    KEY_QUOTE, // '
    KEY_9 | KEY_MOD_LEFT_SHIFT, // (
    KEY_0 | KEY_MOD_LEFT_SHIFT, // )
    KEY_8 | KEY_MOD_LEFT_SHIFT, // *
    KEY_EQUAL | KEY_MOD_LEFT_SHIFT, // +
    KEY_COMMA, // ,
    KEY_MINUS, // -
    KEY_PERIOD, // .
    KEY_SLASH, // /
    KEY_0, // 0
    KEY_1, // 1
    KEY_2, // 2
    KEY_3, // 3
    KEY_4, // 4
    KEY_5, // 5
    KEY_6, // 6
    KEY_7, // 7
    KEY_8, // 8
    KEY_9, // 9
    KEY_SEMICOLON | KEY_MOD_LEFT_SHIFT, // :
    KEY_SEMICOLON, // ;
    KEY_COMMA | KEY_MOD_LEFT_SHIFT, // <
    KEY_EQUAL, // =
    KEY_PERIOD | KEY_MOD_LEFT_SHIFT, // >
    KEY_SLASH | KEY_MOD_LEFT_SHIFT, // ?
    KEY_2 | KEY_MOD_LEFT_SHIFT, // @
    KEY_A | KEY_MOD_LEFT_SHIFT, // A
    KEY_B | KEY_MOD_LEFT_SHIFT, // B
    KEY_C | KEY_MOD_LEFT_SHIFT, // C
    KEY_D | KEY_MOD_LEFT_SHIFT, // D
    KEY_E | KEY_MOD_LEFT_SHIFT, // E
    KEY_F | KEY_MOD_LEFT_SHIFT, // F
    KEY_G | KEY_MOD_LEFT_SHIFT, // G
    KEY_H | KEY_MOD_LEFT_SHIFT, // H
    KEY_I | KEY_MOD_LEFT_SHIFT, // I
    KEY_J | KEY_MOD_LEFT_SHIFT, // J
    KEY_K | KEY_MOD_LEFT_SHIFT, // K
    KEY_L | KEY_MOD_LEFT_SHIFT, // L
    KEY_M | KEY_MOD_LEFT_SHIFT, // M
    KEY_N | KEY_MOD_LEFT_SHIFT, // N
    KEY_O | KEY_MOD_LEFT_SHIFT, // O
    KEY_P | KEY_MOD_LEFT_SHIFT, // P
    KEY_Q | KEY_MOD_LEFT_SHIFT, // Q
    KEY_R | KEY_MOD_LEFT_SHIFT, // R
    KEY_S | KEY_MOD_LEFT_SHIFT, // S
    KEY_T | KEY_MOD_LEFT_SHIFT, // T
    KEY_U | KEY_MOD_LEFT_SHIFT, // U
    KEY_V | KEY_MOD_LEFT_SHIFT, // V
    KEY_W | KEY_MOD_LEFT_SHIFT, // W
    KEY_X | KEY_MOD_LEFT_SHIFT, // X
    KEY_Y | KEY_MOD_LEFT_SHIFT, // Y
    KEY_Z | KEY_MOD_LEFT_SHIFT, // Z
    KEY_LEFT_BRACE, // [
    KEY_BACKSLASH, // bslash
    KEY_RIGHT_BRACE, // ]
    KEY_6 | KEY_MOD_LEFT_SHIFT, // ^
    KEY_MINUS | KEY_MOD_LEFT_SHIFT, // _
    KEY_TILDE, // `
    KEY_A, // a
    KEY_B, // b
    KEY_C, // c
    KEY_D, // d
    KEY_E, // e
    KEY_F, // f
    KEY_G, // g
    KEY_H, // h
    KEY_I, // i
    KEY_J, // j
    KEY_K, // k
    KEY_L, // l
    KEY_M, // m
    KEY_N, // n
    KEY_O, // o
    KEY_P, // p
    KEY_Q, // q
    KEY_R, // r
    KEY_S, // s
    KEY_T, // t
    KEY_U, // u
    KEY_V, // v
    KEY_W, // w
    KEY_X, // x
    KEY_Y, // y
    KEY_Z, // z
    KEY_LEFT_BRACE | KEY_MOD_LEFT_SHIFT, // {
    KEY_BACKSLASH | KEY_MOD_LEFT_SHIFT, // |
    KEY_RIGHT_BRACE | KEY_MOD_LEFT_SHIFT, // }
    KEY_TILDE | KEY_MOD_LEFT_SHIFT, // ~
    KEY_NONE, // DEL
};

typedef struct {
    uint32_t vid;
    uint32_t pid;
    char manuf[32];
    char product[32];
} FuriHalUsbHidConfig;

typedef void (*HidStateCallback)(bool state, void* context);

/** ASCII to keycode conversion macro */
#define HID_ASCII_TO_KEY(x) (((uint8_t)x < 128) ? (hid_asciimap[(uint8_t)x]) : KEY_NONE)

/** HID keyboard leds */
enum HidKeyboardLeds {
    HID_KB_LED_NUM = (1 << 0),
    HID_KB_LED_CAPS = (1 << 1),
    HID_KB_LED_SCROLL = (1 << 2),
};

/** HID mouse buttons */
enum HidMouseButtons {
    HID_MOUSE_BTN_LEFT = (1 << 0),
    HID_MOUSE_BTN_RIGHT = (1 << 1),
    HID_MOUSE_BTN_WHEEL = (1 << 2),
};

/** Get USB HID connection state
 *
 * @return      true / false
 */
bool furi_hal_hid_is_connected();

/** Get USB HID keyboard leds state
 *
 * @return      leds state
 */
uint8_t furi_hal_hid_get_led_state();

/** Set USB HID connect/disconnect callback
 *
 * @param      cb  callback
 * @param      ctx  callback context
 */
void furi_hal_hid_set_state_callback(HidStateCallback cb, void* ctx);

/** Set the following key to pressed state and send HID report
 *
 * @param      button  key code
 */
bool furi_hal_hid_kb_press(uint16_t button);

/** Set the following key to released state and send HID report
 *
 * @param      button  key code
 */
bool furi_hal_hid_kb_release(uint16_t button);

/** Clear all pressed keys and send HID report
 *
 */
bool furi_hal_hid_kb_release_all();

/** Set mouse movement and send HID report
 *
 * @param      dx  x coordinate delta
 * @param      dy  y coordinate delta
 */
bool furi_hal_hid_mouse_move(int8_t dx, int8_t dy);

/** Set mouse button to pressed state and send HID report
 *
 * @param      button  key code
 */
bool furi_hal_hid_mouse_press(uint8_t button);

/** Set mouse button to released state and send HID report
 *
 * @param      button  key code
 */
bool furi_hal_hid_mouse_release(uint8_t button);

/** Set mouse wheel position and send HID report
 *
 * @param      delta  number of scroll steps
 */
bool furi_hal_hid_mouse_scroll(int8_t delta);

/** Set the following consumer key to pressed state and send HID report
 *
 * @param      button  key code
 */
bool furi_hal_hid_consumer_key_press(uint16_t button);

/** Set the following consumer key to released state and send HID report
 *
 * @param      button  key code
 */
bool furi_hal_hid_consumer_key_release(uint16_t button);