You can not select more than 25 topics
			Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
		
		
		
		
		
			
		
			
				
					
					
						
							205 lines
						
					
					
						
							6.5 KiB
						
					
					
				
			
		
		
	
	
							205 lines
						
					
					
						
							6.5 KiB
						
					
					
				| /*
 | |
|              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 VirtualSerial demo. This file contains the main tasks of
 | |
|  *  the demo and is responsible for the initial application hardware configuration.
 | |
|  */
 | |
| 
 | |
| #include "VirtualSerial.h"
 | |
| 
 | |
| /** LUFA CDC Class driver interface configuration and state information. This structure is
 | |
|  *  passed to all CDC Class driver functions, so that multiple instances of the same class
 | |
|  *  within a device can be differentiated from one another.
 | |
|  */
 | |
| USB_ClassInfo_CDC_Device_t VirtualSerial_CDC_Interface =
 | |
| 	{
 | |
| 		.Config =
 | |
| 			{
 | |
| 				.ControlInterfaceNumber   = INTERFACE_ID_CDC_CCI,
 | |
| 				.DataINEndpoint           =
 | |
| 					{
 | |
| 						.Address          = CDC_TX_EPADDR,
 | |
| 						.Size             = CDC_TXRX_EPSIZE,
 | |
| 						.Banks            = 1,
 | |
| 					},
 | |
| 				.DataOUTEndpoint =
 | |
| 					{
 | |
| 						.Address          = CDC_RX_EPADDR,
 | |
| 						.Size             = CDC_TXRX_EPSIZE,
 | |
| 						.Banks            = 1,
 | |
| 					},
 | |
| 				.NotificationEndpoint =
 | |
| 					{
 | |
| 						.Address          = CDC_NOTIFICATION_EPADDR,
 | |
| 						.Size             = CDC_NOTIFICATION_EPSIZE,
 | |
| 						.Banks            = 1,
 | |
| 					},
 | |
| 			},
 | |
| 	};
 | |
| 
 | |
| /** Standard file stream for the CDC interface when set up, so that the virtual CDC COM port can be
 | |
|  *  used like any regular character stream in the C APIs.
 | |
|  */
 | |
| static FILE USBSerialStream;
 | |
| 
 | |
| 
 | |
| /** Main program entry point. This routine contains the overall program flow, including initial
 | |
|  *  setup of all components and the main program loop.
 | |
|  */
 | |
| int main(void)
 | |
| {
 | |
| 	SetupHardware();
 | |
| 
 | |
| 	/* Create a regular character stream for the interface so that it can be used with the stdio.h functions */
 | |
| 	CDC_Device_CreateStream(&VirtualSerial_CDC_Interface, &USBSerialStream);
 | |
| 
 | |
| 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
 | |
| 	GlobalInterruptEnable();
 | |
| 
 | |
| 	for (;;)
 | |
| 	{
 | |
| 		CheckJoystickMovement();
 | |
| 
 | |
| 		/* Must throw away unused bytes from the host, or it will lock up while waiting for the device */
 | |
| 		CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface);
 | |
| 
 | |
| 		CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
 | |
| 		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);
 | |
| #elif (ARCH == ARCH_XMEGA)
 | |
| 	/* Start the PLL to multiply the 2MHz RC oscillator to 32MHz and switch the CPU core to run from it */
 | |
| 	XMEGACLK_StartPLL(CLOCK_SRC_INT_RC2MHZ, 2000000, F_CPU);
 | |
| 	XMEGACLK_SetCPUClockSource(CLOCK_SRC_PLL);
 | |
| 
 | |
| 	/* Start the 32MHz internal RC oscillator and start the DFLL to increase it to 48MHz using the USB SOF as a reference */
 | |
| 	XMEGACLK_StartInternalOscillator(CLOCK_SRC_INT_RC32MHZ);
 | |
| 	XMEGACLK_StartDFLL(CLOCK_SRC_INT_RC32MHZ, DFLL_REF_INT_USBSOF, F_USB);
 | |
| 
 | |
| 	PMIC.CTRL = PMIC_LOLVLEN_bm | PMIC_MEDLVLEN_bm | PMIC_HILVLEN_bm;
 | |
| #endif
 | |
| 
 | |
| 	/* Hardware Initialization */
 | |
| 	Joystick_Init();
 | |
| 	LEDs_Init();
 | |
| 	USB_Init();
 | |
| }
 | |
| 
 | |
| /** Checks for changes in the position of the board joystick, sending strings to the host upon each change. */
 | |
| void CheckJoystickMovement(void)
 | |
| {
 | |
| 	uint8_t     JoyStatus_LCL = Joystick_GetStatus();
 | |
| 	char*       ReportString  = NULL;
 | |
| 	static bool ActionSent    = false;
 | |
| 
 | |
| 	if (JoyStatus_LCL & JOY_UP)
 | |
| 	  ReportString = "Joystick Up\r\n";
 | |
| 	else if (JoyStatus_LCL & JOY_DOWN)
 | |
| 	  ReportString = "Joystick Down\r\n";
 | |
| 	else if (JoyStatus_LCL & JOY_LEFT)
 | |
| 	  ReportString = "Joystick Left\r\n";
 | |
| 	else if (JoyStatus_LCL & JOY_RIGHT)
 | |
| 	  ReportString = "Joystick Right\r\n";
 | |
| 	else if (JoyStatus_LCL & JOY_PRESS)
 | |
| 	  ReportString = "Joystick Pressed\r\n";
 | |
| 	else
 | |
| 	  ActionSent = false;
 | |
| 
 | |
| 	if ((ReportString != NULL) && (ActionSent == false))
 | |
| 	{
 | |
| 		ActionSent = true;
 | |
| 
 | |
| 		/* Write the string to the virtual COM port via the created character stream */
 | |
| 		fputs(ReportString, &USBSerialStream);
 | |
| 
 | |
| 		/* Alternatively, without the stream: */
 | |
| 		// CDC_Device_SendString(&VirtualSerial_CDC_Interface, ReportString);
 | |
| 	}
 | |
| }
 | |
| 
 | |
| /** Event handler for the library USB Connection event. */
 | |
| void EVENT_USB_Device_Connect(void)
 | |
| {
 | |
| 	LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
 | |
| }
 | |
| 
 | |
| /** Event handler for the library USB Disconnection event. */
 | |
| void EVENT_USB_Device_Disconnect(void)
 | |
| {
 | |
| 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
 | |
| }
 | |
| 
 | |
| /** Event handler for the library USB Configuration Changed event. */
 | |
| void EVENT_USB_Device_ConfigurationChanged(void)
 | |
| {
 | |
| 	bool ConfigSuccess = true;
 | |
| 
 | |
| 	ConfigSuccess &= CDC_Device_ConfigureEndpoints(&VirtualSerial_CDC_Interface);
 | |
| 
 | |
| 	LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
 | |
| }
 | |
| 
 | |
| /** Event handler for the library USB Control Request reception event. */
 | |
| void EVENT_USB_Device_ControlRequest(void)
 | |
| {
 | |
| 	CDC_Device_ProcessControlRequest(&VirtualSerial_CDC_Interface);
 | |
| }
 | |
| 
 | |
| /** CDC class driver callback function the processing of changes to the virtual
 | |
|  *  control lines sent from the host..
 | |
|  *
 | |
|  *  \param[in] CDCInterfaceInfo  Pointer to the CDC class interface configuration structure being referenced
 | |
|  */
 | |
| void EVENT_CDC_Device_ControLineStateChanged(USB_ClassInfo_CDC_Device_t *const CDCInterfaceInfo)
 | |
| {
 | |
| 	/* You can get changes to the virtual CDC lines in this callback; a common
 | |
| 	   use-case is to use the Data Terminal Ready (DTR) flag to enable and
 | |
| 	   disable CDC communications in your application when set to avoid the
 | |
| 	   application blocking while waiting for a host to become ready and read
 | |
| 	   in the pending data from the USB endpoints.
 | |
| 	*/
 | |
| 	bool HostReady = (CDCInterfaceInfo->State.ControlLineStates.HostToDevice & CDC_CONTROL_LINE_OUT_DTR) != 0;
 | |
| 
 | |
| 	(void)HostReady;
 | |
| }
 |