1 files changed, 264 insertions, 0 deletions
diff --git a/lib/lufa/Demos/Host/LowLevel/KeyboardHost/KeyboardHost.c b/lib/lufa/Demos/Host/LowLevel/KeyboardHost/KeyboardHost.c
new file mode 100644
index 0000000000..df73383392
--- /dev/null
+++ b/lib/lufa/Demos/Host/LowLevel/KeyboardHost/KeyboardHost.c
@@ -0,0 +1,264 @@
+/*
+             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 KeyboardHost demo. This file contains the main tasks of
+ *  the demo and is responsible for the initial application hardware configuration.
+ */
+
+#include "KeyboardHost.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 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 "Device 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)
+	{
+		printf_P(PSTR(ESC_FG_RED "Control Error (Set Configuration).\r\n"
+		                         " -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
+
+		LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
+		return;
+	}
+
+	/* HID class request to set the keyboard protocol to the Boot Protocol */
+	USB_ControlRequest = (USB_Request_Header_t)
+		{
+			.bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE),
+			.bRequest      = HID_REQ_SetProtocol,
+			.wValue        = 0,
+			.wIndex        = 0,
+			.wLength       = 0,
+		};
+
+	/* Select the control pipe for the request transfer */
+	Pipe_SelectPipe(PIPE_CONTROLPIPE);
+
+	/* Send the request, display error and wait for device detach if request fails */
+	if ((ErrorCode = USB_Host_SendControlRequest(NULL)) != HOST_SENDCONTROL_Successful)
+	{
+		printf_P(PSTR(ESC_FG_RED "Control Error (Set Protocol).\r\n"
+		                         " -- 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 keyboard data pipe */
+	Pipe_SelectPipe(KEYBOARD_DATA_IN_PIPE);
+
+	/* Unfreeze keyboard data pipe */
+	Pipe_Unfreeze();
+
+	/* Check to see if a packet has been received */
+	if (!(Pipe_IsINReceived()))
+	{
+		/* Refreeze HID data IN pipe */
+		Pipe_Freeze();
+
+		return;
+	}
+
+	/* Ensure pipe contains data before trying to read from it */
+	if (Pipe_IsReadWriteAllowed())
+	{
+		USB_KeyboardReport_Data_t KeyboardReport;
+
+		/* Read in keyboard report data */
+		Pipe_Read_Stream_LE(&KeyboardReport, sizeof(KeyboardReport), NULL);
+
+		/* Indicate if the modifier byte is non-zero (special key such as shift is being pressed) */
+		LEDs_ChangeLEDs(LEDS_LED1, (KeyboardReport.Modifier) ? LEDS_LED1 : 0);
+
+		uint8_t KeyCode = KeyboardReport.KeyCode[0];
+
+		/* Check if a key has been 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);
+		}
+	}
+
+	/* Clear the IN endpoint, ready for next data packet */
+	Pipe_ClearIN();
+
+	/* Refreeze keyboard data pipe */
+	Pipe_Freeze();
+}
+