// dear imgui: Platform Binding for GLFW // This needs to be used along with a Renderer (e.g. OpenGL3, Vulkan..) // (Info: GLFW is a cross-platform general purpose library for handling windows, inputs, OpenGL/Vulkan graphics context creation, etc.) // Implemented features: // [X] Platform: Clipboard support. // [X] Platform: Gamepad support. Enable with 'io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad'. // [x] Platform: Mouse cursor shape and visibility. Disable with 'io.ConfigFlags |= ImGuiConfigFlags_NoMouseCursorChange'. FIXME: 3 cursors types are missing from GLFW. // [X] Platform: Keyboard arrays indexed using GLFW_KEY_* codes, e.g. ImGui::IsKeyPressed(GLFW_KEY_SPACE). // You can copy and use unmodified imgui_impl_* files in your project. See main.cpp for an example of using this. // If you are new to dear imgui, read examples/README.txt and read the documentation at the top of imgui.cpp. // https://github.com/ocornut/imgui // CHANGELOG // (minor and older changes stripped away, please see git history for details) // 2018-08-01: Inputs: Workaround for Emscripten which doesn't seem to handle focus related calls. // 2018-06-29: Inputs: Added support for the ImGuiMouseCursor_Hand cursor. // 2018-06-08: Misc: Extracted imgui_impl_glfw.cpp/.h away from the old combined GLFW+OpenGL/Vulkan examples. // 2018-03-20: Misc: Setup io.BackendFlags ImGuiBackendFlags_HasMouseCursors flag + honor ImGuiConfigFlags_NoMouseCursorChange flag. // 2018-02-20: Inputs: Added support for mouse cursors (ImGui::GetMouseCursor() value, passed to glfwSetCursor()). // 2018-02-06: Misc: Removed call to ImGui::Shutdown() which is not available from 1.60 WIP, user needs to call CreateContext/DestroyContext themselves. // 2018-02-06: Inputs: Added mapping for ImGuiKey_Space. // 2018-01-25: Inputs: Added gamepad support if ImGuiConfigFlags_NavEnableGamepad is set. // 2018-01-25: Inputs: Honoring the io.WantSetMousePos by repositioning the mouse (when using navigation and ImGuiConfigFlags_NavMoveMouse is set). // 2018-01-20: Inputs: Added Horizontal Mouse Wheel support. // 2018-01-18: Inputs: Added mapping for ImGuiKey_Insert. // 2017-08-25: Inputs: MousePos set to -FLT_MAX,-FLT_MAX when mouse is unavailable/missing (instead of -1,-1). // 2016-10-15: Misc: Added a void* user_data parameter to Clipboard function handlers. #include "imgui.h" #include "imgui_impl_glfw.h" // GLFW #include #ifdef _WIN32 #undef APIENTRY #define GLFW_EXPOSE_NATIVE_WIN32 #include // for glfwGetWin32Window #endif #define GLFW_HAS_WINDOW_TOPMOST (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3200) // 3.2+ GLFW_FLOATING #define GLFW_HAS_WINDOW_HOVERED (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3300) // 3.3+ GLFW_HOVERED #define GLFW_HAS_WINDOW_ALPHA (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3300) // 3.3+ glfwSetWindowOpacity #define GLFW_HAS_PER_MONITOR_DPI (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3300) // 3.3+ glfwGetMonitorContentScale #define GLFW_HAS_VULKAN (GLFW_VERSION_MAJOR * 1000 + GLFW_VERSION_MINOR * 100 >= 3200) // 3.2+ glfwCreateWindowSurface // Data enum GlfwClientApi { GlfwClientApi_Unknown, GlfwClientApi_OpenGL, GlfwClientApi_Vulkan }; static GLFWwindow* g_Window = NULL; static GlfwClientApi g_ClientApi = GlfwClientApi_Unknown; static double g_Time = 0.0; static bool g_MouseJustPressed[5] = { false, false, false, false, false }; static GLFWcursor* g_MouseCursors[ImGuiMouseCursor_COUNT] = { 0 }; static const char* ImGui_ImplGlfw_GetClipboardText(void* user_data) { return glfwGetClipboardString((GLFWwindow*)user_data); } static void ImGui_ImplGlfw_SetClipboardText(void* user_data, const char* text) { glfwSetClipboardString((GLFWwindow*)user_data, text); } void ImGui_ImplGlfw_MouseButtonCallback(GLFWwindow*, int button, int action, int /*mods*/) { if (action == GLFW_PRESS && button >= 0 && button < IM_ARRAYSIZE(g_MouseJustPressed)) g_MouseJustPressed[button] = true; } void ImGui_ImplGlfw_ScrollCallback(GLFWwindow*, double xoffset, double yoffset) { ImGuiIO& io = ImGui::GetIO(); io.MouseWheelH += (float)xoffset; io.MouseWheel += (float)yoffset; } void ImGui_ImplGlfw_KeyCallback(GLFWwindow*, int key, int, int action, int mods) { ImGuiIO& io = ImGui::GetIO(); if (action == GLFW_PRESS) io.KeysDown[key] = true; if (action == GLFW_RELEASE) io.KeysDown[key] = false; (void)mods; // Modifiers are not reliable across systems io.KeyCtrl = io.KeysDown[GLFW_KEY_LEFT_CONTROL] || io.KeysDown[GLFW_KEY_RIGHT_CONTROL]; io.KeyShift = io.KeysDown[GLFW_KEY_LEFT_SHIFT] || io.KeysDown[GLFW_KEY_RIGHT_SHIFT]; io.KeyAlt = io.KeysDown[GLFW_KEY_LEFT_ALT] || io.KeysDown[GLFW_KEY_RIGHT_ALT]; io.KeySuper = io.KeysDown[GLFW_KEY_LEFT_SUPER] || io.KeysDown[GLFW_KEY_RIGHT_SUPER]; } void ImGui_ImplGlfw_CharCallback(GLFWwindow*, unsigned int c) { ImGuiIO& io = ImGui::GetIO(); if (c > 0 && c < 0x10000) io.AddInputCharacter((unsigned short)c); } void ImGui_ImplGlfw_InstallCallbacks(GLFWwindow* window) { glfwSetMouseButtonCallback(window, ImGui_ImplGlfw_MouseButtonCallback); glfwSetScrollCallback(window, ImGui_ImplGlfw_ScrollCallback); glfwSetKeyCallback(window, ImGui_ImplGlfw_KeyCallback); glfwSetCharCallback(window, ImGui_ImplGlfw_CharCallback); } static bool ImGui_ImplGlfw_Init(GLFWwindow* window, bool install_callbacks, GlfwClientApi client_api) { g_Window = window; g_Time = 0.0; // Setup back-end capabilities flags ImGuiIO& io = ImGui::GetIO(); io.BackendFlags |= ImGuiBackendFlags_HasMouseCursors; // We can honor GetMouseCursor() values (optional) io.BackendFlags |= ImGuiBackendFlags_HasSetMousePos; // We can honor io.WantSetMousePos requests (optional, rarely used) // Keyboard mapping. ImGui will use those indices to peek into the io.KeysDown[] array. io.KeyMap[ImGuiKey_Tab] = GLFW_KEY_TAB; io.KeyMap[ImGuiKey_LeftArrow] = GLFW_KEY_LEFT; io.KeyMap[ImGuiKey_RightArrow] = GLFW_KEY_RIGHT; io.KeyMap[ImGuiKey_UpArrow] = GLFW_KEY_UP; io.KeyMap[ImGuiKey_DownArrow] = GLFW_KEY_DOWN; io.KeyMap[ImGuiKey_PageUp] = GLFW_KEY_PAGE_UP; io.KeyMap[ImGuiKey_PageDown] = GLFW_KEY_PAGE_DOWN; io.KeyMap[ImGuiKey_Home] = GLFW_KEY_HOME; io.KeyMap[ImGuiKey_End] = GLFW_KEY_END; io.KeyMap[ImGuiKey_Insert] = GLFW_KEY_INSERT; io.KeyMap[ImGuiKey_Delete] = GLFW_KEY_DELETE; io.KeyMap[ImGuiKey_Backspace] = GLFW_KEY_BACKSPACE; io.KeyMap[ImGuiKey_Space] = GLFW_KEY_SPACE; io.KeyMap[ImGuiKey_Enter] = GLFW_KEY_ENTER; io.KeyMap[ImGuiKey_Escape] = GLFW_KEY_ESCAPE; io.KeyMap[ImGuiKey_A] = GLFW_KEY_A; io.KeyMap[ImGuiKey_C] = GLFW_KEY_C; io.KeyMap[ImGuiKey_V] = GLFW_KEY_V; io.KeyMap[ImGuiKey_X] = GLFW_KEY_X; io.KeyMap[ImGuiKey_Y] = GLFW_KEY_Y; io.KeyMap[ImGuiKey_Z] = GLFW_KEY_Z; io.SetClipboardTextFn = ImGui_ImplGlfw_SetClipboardText; io.GetClipboardTextFn = ImGui_ImplGlfw_GetClipboardText; io.ClipboardUserData = g_Window; #if defined(_WIN32) io.ImeWindowHandle = (void*)glfwGetWin32Window(g_Window); #endif g_MouseCursors[ImGuiMouseCursor_Arrow] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR); g_MouseCursors[ImGuiMouseCursor_TextInput] = glfwCreateStandardCursor(GLFW_IBEAM_CURSOR); g_MouseCursors[ImGuiMouseCursor_ResizeAll] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR); // FIXME: GLFW doesn't have this. g_MouseCursors[ImGuiMouseCursor_ResizeNS] = glfwCreateStandardCursor(GLFW_VRESIZE_CURSOR); g_MouseCursors[ImGuiMouseCursor_ResizeEW] = glfwCreateStandardCursor(GLFW_HRESIZE_CURSOR); g_MouseCursors[ImGuiMouseCursor_ResizeNESW] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR); // FIXME: GLFW doesn't have this. g_MouseCursors[ImGuiMouseCursor_ResizeNWSE] = glfwCreateStandardCursor(GLFW_ARROW_CURSOR); // FIXME: GLFW doesn't have this. g_MouseCursors[ImGuiMouseCursor_Hand] = glfwCreateStandardCursor(GLFW_HAND_CURSOR); if (install_callbacks) ImGui_ImplGlfw_InstallCallbacks(window); g_ClientApi = client_api; return true; } bool ImGui_ImplGlfw_InitForOpenGL(GLFWwindow* window, bool install_callbacks) { return ImGui_ImplGlfw_Init(window, install_callbacks, GlfwClientApi_OpenGL); } bool ImGui_ImplGlfw_InitForVulkan(GLFWwindow* window, bool install_callbacks) { return ImGui_ImplGlfw_Init(window, install_callbacks, GlfwClientApi_Vulkan); } void ImGui_ImplGlfw_Shutdown() { for (ImGuiMouseCursor cursor_n = 0; cursor_n < ImGuiMouseCursor_COUNT; cursor_n++) { glfwDestroyCursor(g_MouseCursors[cursor_n]); g_MouseCursors[cursor_n] = NULL; } g_ClientApi = GlfwClientApi_Unknown; } static void ImGui_ImplGlfw_UpdateMousePosAndButtons() { // Update buttons ImGuiIO& io = ImGui::GetIO(); for (int i = 0; i < IM_ARRAYSIZE(io.MouseDown); i++) { // If a mouse press event came, always pass it as "mouse held this frame", so we don't miss click-release events that are shorter than 1 frame. io.MouseDown[i] = g_MouseJustPressed[i] || glfwGetMouseButton(g_Window, i) != 0; g_MouseJustPressed[i] = false; } // Update mouse position const ImVec2 mouse_pos_backup = io.MousePos; io.MousePos = ImVec2(-FLT_MAX, -FLT_MAX); #ifdef __EMSCRIPTEN__ const bool focused = true; // Emscripten #else const bool focused = glfwGetWindowAttrib(g_Window, GLFW_FOCUSED) != 0; #endif if (focused) { if (io.WantSetMousePos) { glfwSetCursorPos(g_Window, (double)mouse_pos_backup.x, (double)mouse_pos_backup.y); } else { double mouse_x, mouse_y; glfwGetCursorPos(g_Window, &mouse_x, &mouse_y); io.MousePos = ImVec2((float)mouse_x, (float)mouse_y); } } } static void ImGui_ImplGlfw_UpdateMouseCursor() { ImGuiIO& io = ImGui::GetIO(); if ((io.ConfigFlags & ImGuiConfigFlags_NoMouseCursorChange) || glfwGetInputMode(g_Window, GLFW_CURSOR) == GLFW_CURSOR_DISABLED) return; ImGuiMouseCursor imgui_cursor = ImGui::GetMouseCursor(); if (imgui_cursor == ImGuiMouseCursor_None || io.MouseDrawCursor) { // Hide OS mouse cursor if imgui is drawing it or if it wants no cursor glfwSetInputMode(g_Window, GLFW_CURSOR, GLFW_CURSOR_HIDDEN); } else { // Show OS mouse cursor // FIXME-PLATFORM: Unfocused windows seems to fail changing the mouse cursor with GLFW 3.2, but 3.3 works here. glfwSetCursor(g_Window, g_MouseCursors[imgui_cursor] ? g_MouseCursors[imgui_cursor] : g_MouseCursors[ImGuiMouseCursor_Arrow]); glfwSetInputMode(g_Window, GLFW_CURSOR, GLFW_CURSOR_NORMAL); } } void ImGui_ImplGlfw_NewFrame() { ImGuiIO& io = ImGui::GetIO(); IM_ASSERT(io.Fonts->IsBuilt()); // Font atlas needs to be built, call renderer _NewFrame() function e.g. ImGui_ImplOpenGL3_NewFrame() // Setup display size int w, h; int display_w, display_h; glfwGetWindowSize(g_Window, &w, &h); glfwGetFramebufferSize(g_Window, &display_w, &display_h); io.DisplaySize = ImVec2((float)w, (float)h); io.DisplayFramebufferScale = ImVec2(w > 0 ? ((float)display_w / w) : 0, h > 0 ? ((float)display_h / h) : 0); // Setup time step double current_time = glfwGetTime(); io.DeltaTime = g_Time > 0.0 ? (float)(current_time - g_Time) : (float)(1.0f/60.0f); g_Time = current_time; ImGui_ImplGlfw_UpdateMousePosAndButtons(); ImGui_ImplGlfw_UpdateMouseCursor(); // Gamepad navigation mapping [BETA] memset(io.NavInputs, 0, sizeof(io.NavInputs)); if (io.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) { // Update gamepad inputs #define MAP_BUTTON(NAV_NO, BUTTON_NO) { if (buttons_count > BUTTON_NO && buttons[BUTTON_NO] == GLFW_PRESS) io.NavInputs[NAV_NO] = 1.0f; } #define MAP_ANALOG(NAV_NO, AXIS_NO, V0, V1) { float v = (axes_count > AXIS_NO) ? axes[AXIS_NO] : V0; v = (v - V0) / (V1 - V0); if (v > 1.0f) v = 1.0f; if (io.NavInputs[NAV_NO] < v) io.NavInputs[NAV_NO] = v; } int axes_count = 0, buttons_count = 0; const float* axes = glfwGetJoystickAxes(GLFW_JOYSTICK_1, &axes_count); const unsigned char* buttons = glfwGetJoystickButtons(GLFW_JOYSTICK_1, &buttons_count); MAP_BUTTON(ImGuiNavInput_Activate, 0); // Cross / A MAP_BUTTON(ImGuiNavInput_Cancel, 1); // Circle / B MAP_BUTTON(ImGuiNavInput_Menu, 2); // Square / X MAP_BUTTON(ImGuiNavInput_Input, 3); // Triangle / Y MAP_BUTTON(ImGuiNavInput_DpadLeft, 13); // D-Pad Left MAP_BUTTON(ImGuiNavInput_DpadRight, 11); // D-Pad Right MAP_BUTTON(ImGuiNavInput_DpadUp, 10); // D-Pad Up MAP_BUTTON(ImGuiNavInput_DpadDown, 12); // D-Pad Down MAP_BUTTON(ImGuiNavInput_FocusPrev, 4); // L1 / LB MAP_BUTTON(ImGuiNavInput_FocusNext, 5); // R1 / RB MAP_BUTTON(ImGuiNavInput_TweakSlow, 4); // L1 / LB MAP_BUTTON(ImGuiNavInput_TweakFast, 5); // R1 / RB MAP_ANALOG(ImGuiNavInput_LStickLeft, 0, -0.3f, -0.9f); MAP_ANALOG(ImGuiNavInput_LStickRight,0, +0.3f, +0.9f); MAP_ANALOG(ImGuiNavInput_LStickUp, 1, +0.3f, +0.9f); MAP_ANALOG(ImGuiNavInput_LStickDown, 1, -0.3f, -0.9f); #undef MAP_BUTTON #undef MAP_ANALOG if (axes_count > 0 && buttons_count > 0) io.BackendFlags |= ImGuiBackend
/*
             LUFA Library
     Copyright (C) Dean Camera, 2017.

  dean [at] fourwalledcubicle [dot] com
           www.lufa-lib.org
*/

/*
  Copyright 2017  Dean Camera (dean [at] fourwalledcubicle [dot] com)

  Permission to use, copy, modify, distribute, and sell this
  software and its documentation for any purpose is hereby granted
  without fee, provided that the above copyright notice appear in
  all copies and that both that the copyright notice and this
  permission notice and warranty disclaimer appear in supporting
  documentation, and that the name of the author not be used in
  advertising or publicity pertaining to distribution of the
  software without specific, written prior permission.

  The author disclaims all warranties with regard to this
  software, including all implied warranties of merchantability
  and fitness.  In no event shall the author be liable for any
  special, indirect or consequential damages or any damages
  whatsoever resulting from loss of use, data or profits, whether
  in an action of contract, negligence or other tortious action,
  arising out of or in connection with the use or performance of
  this software.
*/

/** \file
 *
 *  Main source file for the KeyboardHostWithParser demo. This file contains the main tasks of
 *  the demo and is responsible for the initial application hardware configuration.
 */

#include "KeyboardHostWithParser.h"

/** Main program entry point. This routine configures the hardware required by the application, then
 *  enters a loop to run the application tasks in sequence.
 */
int main(void)
{
	SetupHardware();

	puts_P(PSTR(ESC_FG_CYAN "Keyboard HID Parser Host Demo running.\r\n" ESC_FG_WHITE));

	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
	GlobalInterruptEnable();

	for (;;)
	{
		KeyboardHost_Task();

		USB_USBTask();
	}
}

/** Configures the board hardware and chip peripherals for the demo's functionality. */
void SetupHardware(void)
{
#if (ARCH == ARCH_AVR8)
	/* Disable watchdog if enabled by bootloader/fuses */
	MCUSR &= ~(1 << WDRF);
	wdt_disable();

	/* Disable clock division */
	clock_prescale_set(clock_div_1);
#endif

	/* Hardware Initialization */
	Serial_Init(9600, false);
	LEDs_Init();
	USB_Init();

	/* Create a stdio stream for the serial port for stdin and stdout */
	Serial_CreateStream(NULL);
}

/** Event handler for the USB_DeviceAttached event. This indicates that a device has been attached to the host, and
 *  starts the library USB task to begin the enumeration and USB management process.
 */
void EVENT_USB_Host_DeviceAttached(void)
{
	puts_P(PSTR(ESC_FG_GREEN "Device Attached.\r\n" ESC_FG_WHITE));
	LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
}

/** Event handler for the USB_DeviceUnattached event. This indicates that a device has been removed from the host, and
 *  stops the library USB task management process.
 */
void EVENT_USB_Host_DeviceUnattached(void)
{
	puts_P(PSTR(ESC_FG_GREEN "\r\nDevice Unattached.\r\n" ESC_FG_WHITE));
	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
}

/** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully
 *  enumerated by the host and is now ready to be used by the application.
 */
void EVENT_USB_Host_DeviceEnumerationComplete(void)
{
	puts_P(PSTR("Getting Config Data.\r\n"));

	uint8_t ErrorCode;

	/* Get and process the configuration descriptor data */
	if ((ErrorCode = ProcessConfigurationDescriptor()) != SuccessfulConfigRead)
	{
		if (ErrorCode == ControlError)
		  puts_P(PSTR(ESC_FG_RED "Control Error (Get Configuration).\r\n"));
		else
		  puts_P(PSTR(ESC_FG_RED "Invalid Device.\r\n"));

		printf_P(PSTR(" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);

		LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
		return;
	}

	/* Set the device configuration to the first configuration (rarely do devices use multiple configurations) */
	if ((ErrorCode = USB_Host_SetDeviceConfiguration(1)) != HOST_SENDCONTROL_Successful)

	{
		puts_P(PSTR(ESC_FG_RED "Control Error (Set Configuration).\r\n"));
		printf_P(PSTR(" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);

		LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
		return;
	}

	printf_P(PSTR("Processing HID Report (Size %d Bytes).\r\n"), HIDReportSize);

	/* Get and process the device's first HID report descriptor */
	if ((ErrorCode = GetHIDReportData()) != ParseSuccessful)
	{
		puts_P(PSTR(ESC_FG_RED "Report Parse Error.\r\n"));

		if (!(HIDReportInfo.TotalReportItems))
			puts_P(PSTR("Not a valid Keyboard." ESC_FG_WHITE));
		else
			printf_P(PSTR(" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);

		LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
		USB_Host_SetDeviceConfiguration(0);
		return;
	}

	puts_P(PSTR("Keyboard Enumerated.\r\n"));
	LEDs_SetAllLEDs(LEDMASK_USB_READY);
}

/** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */
void EVENT_USB_Host_HostError(const uint8_t ErrorCode)
{
	USB_Disable();

	printf_P(PSTR(ESC_FG_RED "Host Mode Error\r\n"
	                         " -- Error Code %d\r\n" ESC_FG_WHITE), ErrorCode);

	LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
	for(;;);
}

/** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while
 *  enumerating an attached USB device.
 */
void EVENT_USB_Host_DeviceEnumerationFailed(const uint8_t ErrorCode,
                                            const uint8_t SubErrorCode)
{
	printf_P(PSTR(ESC_FG_RED "Dev Enum Error\r\n"
	                         " -- Error Code %d\r\n"
	                         " -- Sub Error Code %d\r\n"
	                         " -- In State %d\r\n" ESC_FG_WHITE), ErrorCode, SubErrorCode, USB_HostState);

	LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
}

/** Task to read in and processes the next report from the attached device, displaying the report
 *  contents on the board LEDs and via the serial port.
 */
void KeyboardHost_Task(void)
{
	if (USB_HostState != HOST_STATE_Configured)
	  return;

	/* Select and unfreeze keyboard data pipe */
	Pipe_SelectPipe(KEYBOARD_DATA_IN_PIPE);
	Pipe_Unfreeze();

	/* Check to see if a packet has been received */
	if (Pipe_IsINReceived())
	{
		/* Check if data has been received from the attached keyboard */
		if (Pipe_IsReadWriteAllowed())
		{
			/* Create buffer big enough for the report */
			uint8_t KeyboardReport[Pipe_BytesInPipe()];

			/* Load in the keyboard report */
			Pipe_Read_Stream_LE(KeyboardReport, Pipe_BytesInPipe(), NULL);

			/* Process the read in keyboard report from the device */
			ProcessKeyboardReport(KeyboardReport);
		}

		/* Clear the IN endpoint, ready for next data packet */
		Pipe_ClearIN();
	}

	/* Freeze keyboard data pipe */
	Pipe_Freeze();
}

/** Processes a read HID report from an attached keyboard, extracting out elements via the HID parser results
 *  as required and prints pressed characters to the serial port. Each time a key is typed, a board LED is toggled.
 *
 *  \param[in] KeyboardReport  Pointer to a HID report from an attached keyboard device
 */
void ProcessKeyboardReport(uint8_t* KeyboardReport)
{
	/* Check each HID report item in turn, looking for keyboard scan code reports */
	for (uint8_t ReportNumber = 0; ReportNumber < HIDReportInfo.TotalReportItems; ReportNumber++)
	{
		/* Create a temporary item pointer to the next report item */
		HID_ReportItem_t* ReportItem = &HIDReportInfo.ReportItems[ReportNumber];

		/* Check if the current report item is a keyboard scan-code */
		if ((ReportItem->Attributes.Usage.Page      == USAGE_PAGE_KEYBOARD) &&
			(ReportItem->Attributes.BitSize         == 8)                   &&
			(ReportItem->Attributes.Logical.Maximum > 1)                    &&
			(ReportItem->ItemType                   == HID_REPORT_ITEM_In))
		{
			/* Retrieve the keyboard scan-code from the report data retrieved from the device */
			bool FoundData = USB_GetHIDReportItemInfo(KeyboardReport, ReportItem);

			/* For multi-report devices - if the requested data was not in the issued report, continue */
			if (!(FoundData))
			  continue;

			/* Key code is an unsigned char in length, cast to the appropriate type */
			uint8_t KeyCode = (uint8_t)ReportItem->Value;

			/* If scan-code is non-zero, a key is being pressed */
			if (KeyCode)
			{
				/* Toggle status LED to indicate keypress */
				LEDs_ToggleLEDs(LEDS_LED2);

				char PressedKey = 0;

				/* Retrieve pressed key character if alphanumeric */
				if ((KeyCode >= HID_KEYBOARD_SC_A) && (KeyCode <= HID_KEYBOARD_SC_Z))
				{
					PressedKey = (KeyCode - HID_KEYBOARD_SC_A) + 'A';
				}
				else if ((KeyCode >= HID_KEYBOARD_SC_1_AND_EXCLAMATION) &
						 (KeyCode  < HID_KEYBOARD_SC_0_AND_CLOSING_PARENTHESIS))
				{
					PressedKey = (KeyCode - HID_KEYBOARD_SC_1_AND_EXCLAMATION) + '1';
				}
				else if (KeyCode == HID_KEYBOARD_SC_0_AND_CLOSING_PARENTHESIS)
				{
					PressedKey = '0';
				}
				else if (KeyCode == HID_KEYBOARD_SC_SPACE)
				{
					PressedKey = ' ';
				}
				else if (KeyCode == HID_KEYBOARD_SC_ENTER)
				{
					PressedKey = '\n';
				}

				/* Print the pressed key character out through the serial port if valid */
				if (PressedKey)
				  putchar(PressedKey);
			}

			/* Once a scan-code is found, stop scanning through the report items */
			break;
		}
	}
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-27 19:47:00 +0000