Demos/Host/LowLevel/PrinterHost/PrinterHost.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2010.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6       www.fourwalledcubicle.com
   7 */
   8
   9 /*
  10   Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  11
  12   Permission to use, copy, modify, distribute, and sell this
  13   software and its documentation for any purpose is hereby granted
  14   without fee, provided that the above copyright notice appear in
  15   all copies and that both that the copyright notice and this
  16   permission notice and warranty disclaimer appear in supporting
  17   documentation, and that the name of the author not be used in
  18   advertising or publicity pertaining to distribution of the
  19   software without specific, written prior permission.
  20
  21   The author disclaim all warranties with regard to this
  22   software, including all implied warranties of merchantability
  23   and fitness.  In no event shall the author be liable for any
  24   special, indirect or consequential damages or any damages
  25   whatsoever resulting from loss of use, data or profits, whether
  26   in an action of contract, negligence or other tortious action,
  27   arising out of or in connection with the use or performance of
  28   this software.
  29 */
  30
  31 /** \file
  32  *
  33  *  Main source file for the PrinterHost demo. This file contains the main tasks of
  34  *  the demo and is responsible for the initial application hardware configuration.
  35  */
  36
  37 #include "PrinterHost.h"
  38
  39 /** Main program entry point. This routine configures the hardware required by the application, then
  40  *  enters a loop to run the application tasks in sequence.
  41  */
  42 int main(void)
  43 {
  44         SetupHardware();
  45
  46         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
  47
  48         puts_P(PSTR(ESC_FG_CYAN "Printer Host Demo running.\r\n" ESC_FG_WHITE));
  49         sei();
  50
  51         for (;;)
  52         {
  53                 USB_Printer_Host();
  54                 USB_USBTask();
  55         }
  56 }
  57
  58 /** Configures the board hardware and chip peripherals for the demo's functionality. */
  59 void SetupHardware(void)
  60 {
  61         /* Disable watchdog if enabled by bootloader/fuses */
  62         MCUSR &= ~(1 << WDRF);
  63         wdt_disable();
  64
  65         /* Disable clock division */
  66         clock_prescale_set(clock_div_1);
  67
  68         /* Hardware Initialization */
  69         SerialStream_Init(9600, false);
  70         LEDs_Init();
  71         USB_Init();
  72 }
  73
  74 /** Event handler for the USB_DeviceAttached event. This indicates that a device has been attached to the host, and
  75  *  starts the library USB task to begin the enumeration and USB management process.
  76  */
  77 void EVENT_USB_Host_DeviceAttached(void)
  78 {
  79         puts_P(PSTR(ESC_FG_GREEN "Device Attached.\r\n" ESC_FG_WHITE));
  80         LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
  81 }
  82
  83 /** Event handler for the USB_DeviceUnattached event. This indicates that a device has been removed from the host, and
  84  *  stops the library USB task management process.
  85  */
  86 void EVENT_USB_Host_DeviceUnattached(void)
  87 {
  88         puts_P(PSTR(ESC_FG_GREEN "\r\nDevice Unattached.\r\n" ESC_FG_WHITE));
  89         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
  90 }
  91
  92 /** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully
  93  *  enumerated by the host and is now ready to be used by the application.
  94  */
  95 void EVENT_USB_Host_DeviceEnumerationComplete(void)
  96 {
  97         LEDs_SetAllLEDs(LEDMASK_USB_READY);
  98 }
  99
 100 /** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */
 101 void EVENT_USB_Host_HostError(uint8_t ErrorCode)
 102 {
 103         USB_ShutDown();
 104
 105         printf_P(PSTR(ESC_FG_RED "Host Mode Error\r\n"
 106                                  " -- Error Code %d\r\n" ESC_FG_WHITE), ErrorCode);
 107
 108         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 109         for(;;);
 110 }
 111
 112 /** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while
 113  *  enumerating an attached USB device.
 114  */
 115 void EVENT_USB_Host_DeviceEnumerationFailed(uint8_t ErrorCode, uint8_t SubErrorCode)
 116 {
 117         printf_P(PSTR(ESC_FG_RED "Dev Enum Error\r\n"
 118                                  " -- Error Code %d\r\n"
 119                                  " -- Sub Error Code %d\r\n"
 120                                  " -- In State %d\r\n" ESC_FG_WHITE), ErrorCode, SubErrorCode, USB_HostState);
 121
 122         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 123 }
 124
 125 /** Task to set the configuration of the attached device after it has been enumerated, and to send some test page
 126  *  data to the attached printer.
 127  */
 128 void USB_Printer_Host(void)
 129 {
 130         uint8_t ErrorCode;
 131
 132         switch (USB_HostState)
 133         {
 134                 case HOST_STATE_Addressed:
 135                         puts_P(PSTR("Getting Config Data.\r\n"));
 136
 137                         /* Select the control pipe for the request transfer */
 138                         Pipe_SelectPipe(PIPE_CONTROLPIPE);
 139
 140                         /* Get and process the configuration descriptor data */
 141                         if ((ErrorCode = ProcessConfigurationDescriptor()) != SuccessfulConfigRead)
 142                         {
 143                                 if (ErrorCode == ControlError)
 144                                   puts_P(PSTR(ESC_FG_RED "Control Error (Get Configuration).\r\n"));
 145                                 else
 146                                   puts_P(PSTR(ESC_FG_RED "Invalid Device.\r\n"));
 147
 148                                 printf_P(PSTR(" -- Error Code: %d\r\n"), ErrorCode);
 149
 150                                 /* Indicate error via status LEDs */
 151                                 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 152
 153                                 /* Wait until USB device disconnected */
 154                                 USB_HostState = HOST_STATE_WaitForDeviceRemoval;
 155                                 break;
 156                         }
 157
 158                         /* Set the device configuration to the first configuration (rarely do devices use multiple configurations) */
 159                         if ((ErrorCode = USB_Host_SetDeviceConfiguration(1)) != HOST_SENDCONTROL_Successful)
 160                         {
 161                                 printf_P(PSTR(ESC_FG_RED "Control Error (Set Configuration).\r\n"
 162                                                          " -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
 163
 164                                 /* Indicate error via status LEDs */
 165                                 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 166
 167                                 /* Wait until USB device disconnected */
 168                                 USB_HostState = HOST_STATE_WaitForDeviceRemoval;
 169                                 break;
 170                         }
 171
 172                         /* Some printers use alternate settings to determine the communication protocol used - if so, send a SetInterface
 173                          * request to switch to the interface alternate setting with the Bidirectional protocol */
 174                         if (PrinterAltSetting)
 175                         {
 176                                 USB_ControlRequest = (USB_Request_Header_t)
 177                                         {
 178                                                 .bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_INTERFACE),
 179                                                 .bRequest      = REQ_SetInterface,
 180                                                 .wValue        = PrinterAltSetting,
 181                                                 .wIndex        = PrinterInterfaceNumber,
 182                                                 .wLength       = 0,
 183                                         };
 184
 185                                 if ((ErrorCode = USB_Host_SendControlRequest(NULL)) != HOST_SENDCONTROL_Successful)
 186                                 {
 187                                         printf_P(PSTR(ESC_FG_RED "Control Error (Set Interface).\r\n"
 188                                                                  " -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
 189
 190                                         /* Indicate error via status LEDs */
 191                                         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 192
 193                                         /* Wait until USB device disconnected */
 194                                         USB_HostState = HOST_STATE_WaitForDeviceRemoval;
 195                                         break;
 196                                 }
 197                         }
 198
 199                         puts_P(PSTR("Retrieving Device ID...\r\n"));
 200
 201                         char DeviceIDString[300];
 202                         if ((ErrorCode = Printer_GetDeviceID(DeviceIDString, sizeof(DeviceIDString))) != HOST_SENDCONTROL_Successful)
 203                         {
 204                                 printf_P(PSTR(ESC_FG_RED "Control Error (Get Device ID).\r\n"
 205                                                          " -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
 206
 207                                 /* Indicate error via status LEDs */
 208                                 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 209
 210                                 /* Wait until USB device disconnected */
 211                                 USB_HostState = HOST_STATE_WaitForDeviceRemoval;
 212                                 break;
 213                         }
 214
 215                         printf_P(PSTR("Printer Device ID: %s\r\n"), DeviceIDString);
 216
 217                         puts_P(PSTR("Printer Enumerated.\r\n"));
 218
 219                         USB_HostState = HOST_STATE_Configured;
 220                         break;
 221                 case HOST_STATE_Configured:
 222                         /* Indicate device busy via the status LEDs */
 223                         LEDs_SetAllLEDs(LEDMASK_USB_BUSY);
 224
 225                         char  TestPageData[]    = "\033%-12345X\033E" "LUFA PCL Test Page" "\033E\033%-12345X";
 226                         uint16_t TestPageLength = strlen(TestPageData);
 227
 228                         printf_P(PSTR("Sending Test Page (%d bytes)...\r\n"), TestPageLength);
 229
 230                         if ((ErrorCode = Printer_SendData(&TestPageData, TestPageLength)) != PIPE_RWSTREAM_NoError)
 231                         {
 232                                 printf_P(PSTR(ESC_FG_RED "Error Sending Test Page.\r\n"
 233                                                          " -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
 234
 235                                 /* Indicate error via status LEDs */
 236                                 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 237
 238                                 /* Wait until USB device disconnected */
 239                                 USB_HostState = HOST_STATE_WaitForDeviceRemoval;
 240                                 break;
 241                         }
 242
 243                         puts_P(PSTR("Test Page Sent.\r\n"));
 244
 245                         /* Indicate device no longer busy */
 246                         LEDs_SetAllLEDs(LEDMASK_USB_READY);
 247
 248                         USB_HostState = HOST_STATE_WaitForDeviceRemoval;
 249                         break;
 250         }
 251 }