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/*
LUFA Library
Copyright (C) Dean Camera, 2012.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
Copyright 2012 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 disclaim 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.
*/
/*
SideShow Class demonstration application. This give a reference
for implementing Microsoft SideShow compatible devices in an
embedded environment. SideShow allows for gadget data displayed
on a Windows Vista or later machine to also be displayed on an
externally connected interactive display. Upon enumeration, this will
appear as a new SideShow device which can have gadgets loaded onto
it.
Note that while the incoming content is buffered in packet struct
form, the data is not actually displayed. It is left to the user to
write sufficient code to read out the packed data for display to a
screen.
Installed gadgets can be accessed through the InstalledApplications
array, with entries that have their InUse flag set being active. As
only the active content is displayed on the device due to memory
constraints, new content can be requested as needed.
*/
#include "Sideshow.h"
/** 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();
LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
sei();
for (;;)
{
SideShow_Task();
USB_USBTask();
}
}
/** Configures the board hardware and chip peripherals for the demo's functionality. */
void SetupHardware(void)
{
/* Disable watchdog if enabled by bootloader/fuses */
MCUSR &= ~(1 << WDRF);
wdt_disable();
/* Disable clock division */
clock_prescale_set(clock_div_1);
/* Hardware Initialization */
LEDs_Init();
USB_Init();
Serial_Init(9600, false);
/* Create a stdio stream for the serial port for stdin and stdout */
Serial_CreateStream(NULL);
}
void EVENT_USB_Device_Connect(void)
{
LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
}
void EVENT_USB_Device_Disconnect(void)
{
LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
}
void EVENT_USB_Device_ConfigurationChanged(void)
{
bool ConfigSuccess = true;
/* Setup Sideshow Data Endpoints */
ConfigSuccess &= Endpoint_ConfigureEndpoint(SIDESHOW_IN_EPADDR, EP_TYPE_BULK, SIDESHOW_IO_EPSIZE, 1);
ConfigSuccess &= Endpoint_ConfigureEndpoint(SIDESHOW_OUT_EPADDR, EP_TYPE_BULK, SIDESHOW_IO_EPSIZE, 1);
/* Indicate endpoint configuration success or failure */
LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
}
void EVENT_USB_Device_ControlRequest(void)
{
switch (USB_ControlRequest.bRequest)
{
case REQ_GetOSFeatureDescriptor:
if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_VENDOR | REQREC_DEVICE))
{
const void* DescriptorPointer;
uint16_t DescriptorSize = USB_GetOSFeatureDescriptor(USB_ControlRequest.wValue,
USB_ControlRequest.wIndex,
&DescriptorPointer);
if (DescriptorSize == NO_DESCRIPTOR)
return;
Endpoint_ClearSETUP();
Endpoint_Write_Control_PStream_LE(DescriptorPointer, DescriptorSize);
Endpoint_ClearOUT();
}
break;
}
}
void SideShow_Task(void)
{
/* Device must be connected and configured for the task to run */
if (USB_DeviceState != DEVICE_STATE_Configured)
return;
/* Select the SideShow data out endpoint */
Endpoint_SelectEndpoint(SIDESHOW_OUT_EPADDR);
/* Check to see if a new SideShow message has been received */
if (Endpoint_IsReadWriteAllowed())
{
/* Process the received SideShow message */
Sideshow_ProcessCommandPacket();
}
}
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