qmk_firmware/Demos/Host/Incomplete/PrinterHost/PrinterHost.c

/*
             LUFA Library
     Copyright (C) Dean Camera, 2009.
              
  dean [at] fourwalledcubicle [dot] com
      www.fourwalledcubicle.com
*/

/*
  Copyright 2009  Dean Camera (dean [at] fourwalledcubicle [dot] com)

  Permission to use, copy, modify, and distribute this software
  and its documentation for any purpose and without fee is hereby
  granted, 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.
*/

/*
	USB Printer host demo application.
	
	** NOT CURRENTLY FUNCTIONAL - DO NOT USE **
*/

#include "PrinterHost.h"

/* Globals */
uint8_t PrinterProtocol;


int main(void)
{
	SetupHardware();

	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);

	puts_P(PSTR(ESC_RESET ESC_BG_WHITE ESC_INVERSE_ON ESC_ERASE_DISPLAY
	       "Printer Host Demo running.\r\n" ESC_INVERSE_OFF));
	
	for (;;)
	{
		USB_Printer_Host();
		USB_USBTask();
	}
}

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 */
	SerialStream_Init(9600, false);
	LEDs_Init();
	USB_Init();
}

void EVENT_USB_DeviceAttached(void)
{
	puts_P(PSTR("Device Attached.\r\n"));
	LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
}

void EVENT_USB_DeviceUnattached(void)
{
	puts_P(PSTR("\r\nDevice Unattached.\r\n"));
	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
}

void EVENT_USB_HostError(uint8_t ErrorCode)
{
	USB_ShutDown();

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

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

void EVENT_USB_DeviceEnumerationFailed(uint8_t ErrorCode, uint8_t SubErrorCode)
{
	puts_P(PSTR(ESC_BG_RED "Dev Enum Error\r\n"));
	printf_P(PSTR(" -- Error Code %d\r\n"), ErrorCode);
	printf_P(PSTR(" -- In State %d\r\n"), USB_HostState);

	LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
}

void EVENT_USB_DeviceEnumerationComplete(void)
{
	LEDs_SetAllLEDs(LEDMASK_USB_READY);
}

void USB_Printer_Host(void)
{
	uint8_t ErrorCode;

	switch (USB_HostState)
	{
		case HOST_STATE_Addressed:
			/* Standard request to set the device configuration to configuration 1 */
			USB_ControlRequest = (USB_Request_Header_t)
				{
					bmRequestType: (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_DEVICE),
					bRequest:      REQ_SetConfiguration,
					wValue:        1,
					wIndex:        0,
					wLength:       0,
				};
				
			/* Send the request, display error and wait for device detatch if request fails */
			if ((ErrorCode = USB_Host_SendControlRequest(NULL)) != HOST_SENDCONTROL_Successful)
			{
				puts_P(PSTR("Control Error (Set Configuration).\r\n"));
				printf_P(PSTR(" -- Error Code: %d\r\n"), ErrorCode);

				/* Indicate error via status LEDs */
				LEDs_SetAllLEDs(LEDS_LED1);

				/* Wait until USB device disconnected */
				while (USB_IsConnected);
				break;
			}
				
			USB_HostState = HOST_STATE_Configured;
			break;
		case HOST_STATE_Configured:
			puts_P(PSTR("Getting Config Data.\r\n"));
		
			/* Get and process the configuration descriptor data */
			if ((ErrorCode = ProcessConfigurationDescriptor()) != SuccessfulConfigRead)
			{
				if (ErrorCode == ControlError)
				  puts_P(PSTR("Control Error (Get Configuration).\r\n"));
				else
				  puts_P(PSTR("Invalid Device.\r\n"));

				printf_P(PSTR(" -- Error Code: %d\r\n"), ErrorCode);
				
				/* Indicate error via status LEDs */
				LEDs_SetAllLEDs(LEDS_LED1);

				/* Wait until USB device disconnected */
				while (USB_IsConnected);
				break;
			}

			puts_P(PSTR("Printer Enumerated.\r\n"));
				
			USB_HostState = HOST_STATE_Ready;
			break;
		case HOST_STATE_Ready:
			/* Indicate device busy via the status LEDs */
			LEDs_SetAllLEDs(LEDS_LED3 | LEDS_LED4);
		
			if (!(GetDeviceID()))
			{
				/* Indicate error via status LEDs */
				LEDs_SetAllLEDs(LEDS_LED1);

				/* Wait until USB device disconnected */
				while (USB_IsConnected);
				break;
			}
		
			/* Indicate device no longer busy */
			LEDs_SetAllLEDs(LEDS_LED4);
			
			/* Wait until USB device disconnected */
			while (USB_IsConnected);
			
			break;
	}
}

bool GetDeviceID(void)
{
	Device_ID_String_t DeviceIDString;

	/* Request to retrieve the device ID string */
	USB_ControlRequest = (USB_Request_Header_t)
		{
			bmRequestType: (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE),
			bRequest:      GET_DEVICE_ID,
			wValue:        0,
			wIndex:        0,
			wLength:       sizeof(DeviceIDString),
		};

	printf("Error Code: %d", USB_Host_SendControlRequest(&DeviceIDString));

	/* Send the request, display error and wait for device detatch if request fails */
	if (USB_Host_SendControlRequest(&DeviceIDString) != HOST_SENDCONTROL_Successful)
	  return false;

	/* Reverse the order of the string length as it is sent in big-endian format */
	DeviceIDString.Length = SwapEndian_16(DeviceIDString.Length);
	
	printf("%s", DeviceIDString.String);
	
	return true;
}