Demos/Host/LowLevel/PrinterHost/PrinterHost.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2011.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2011  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(const 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(const uint8_t ErrorCode,
 116                                             const uint8_t SubErrorCode)
 117 {
 118         printf_P(PSTR(ESC_FG_RED "Dev Enum Error\r\n"
 119                                  " -- Error Code %d\r\n"
 120                                  " -- Sub Error Code %d\r\n"
 121                                  " -- In State %d\r\n" ESC_FG_WHITE), ErrorCode, SubErrorCode, USB_HostState);
 122
 123         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 124 }
 125
 126 /** Task to set the configuration of the attached device after it has been enumerated, and to send some test page
 127  *  data to the attached printer.
 128  */
 129 void USB_Printer_Host(void)
 130 {
 131         uint8_t ErrorCode;
 132
 133         switch (USB_HostState)
 134         {
 135                 case HOST_STATE_Addressed:
 136                         puts_P(PSTR("Getting Config Data.\r\n"));
 137
 138                         /* Select the control pipe for the request transfer */
 139                         Pipe_SelectPipe(PIPE_CONTROLPIPE);
 140
 141                         /* Get and process the configuration descriptor data */
 142                         if ((ErrorCode = ProcessConfigurationDescriptor()) != SuccessfulConfigRead)
 143                         {
 144                                 if (ErrorCode == ControlError)
 145                                   puts_P(PSTR(ESC_FG_RED "Control Error (Get Configuration).\r\n"));
 146                                 else
 147                                   puts_P(PSTR(ESC_FG_RED "Invalid Device.\r\n"));
 148
 149                                 printf_P(PSTR(" -- Error Code: %d\r\n"), ErrorCode);
 150
 151                                 /* Indicate error via status LEDs */
 152                                 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 153
 154                                 /* Wait until USB device disconnected */
 155                                 USB_HostState = HOST_STATE_WaitForDeviceRemoval;
 156                                 break;
 157                         }
 158
 159                         /* Set the device configuration to the first configuration (rarely do devices use multiple configurations) */
 160                         if ((ErrorCode = USB_Host_SetDeviceConfiguration(1)) != HOST_SENDCONTROL_Successful)
 161                         {
 162                                 printf_P(PSTR(ESC_FG_RED "Control Error (Set Configuration).\r\n"
 163                                                          " -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
 164
 165                                 /* Indicate error via status LEDs */
 166                                 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 167
 168                                 /* Wait until USB device disconnected */
 169                                 USB_HostState = HOST_STATE_WaitForDeviceRemoval;
 170                                 break;
 171                         }
 172
 173                         /* Some printers use alternate settings to determine the communication protocol used - if so, send a SetInterface
 174                          * request to switch to the interface alternate setting with the Bidirectional protocol */
 175                         if (PrinterAltSetting)
 176                         {
 177                                 USB_ControlRequest = (USB_Request_Header_t)
 178                                         {
 179                                                 .bmRequestType = (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_INTERFACE),
 180                                                 .bRequest      = REQ_SetInterface,
 181                                                 .wValue        = PrinterAltSetting,
 182                                                 .wIndex        = PrinterInterfaceNumber,
 183                                                 .wLength       = 0,
 184                                         };
 185
 186                                 if ((ErrorCode = USB_Host_SendControlRequest(NULL)) != HOST_SENDCONTROL_Successful)
 187                                 {
 188                                         printf_P(PSTR(ESC_FG_RED "Control Error (Set Interface).\r\n"
 189                                                                  " -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
 190
 191                                         /* Indicate error via status LEDs */
 192                                         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 193
 194                                         /* Wait until USB device disconnected */
 195                                         USB_HostState = HOST_STATE_WaitForDeviceRemoval;
 196                                         break;
 197                                 }
 198                         }
 199
 200                         puts_P(PSTR("Retrieving Device ID...\r\n"));
 201
 202                         char DeviceIDString[300];
 203                         if ((ErrorCode = Printer_GetDeviceID(DeviceIDString, sizeof(DeviceIDString))) != HOST_SENDCONTROL_Successful)
 204                         {
 205                                 printf_P(PSTR(ESC_FG_RED "Control Error (Get Device ID).\r\n"
 206                                                          " -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
 207
 208                                 /* Indicate error via status LEDs */
 209                                 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 210
 211                                 /* Wait until USB device disconnected */
 212                                 USB_HostState = HOST_STATE_WaitForDeviceRemoval;
 213                                 break;
 214                         }
 215
 216                         printf_P(PSTR("Printer Device ID: %s\r\n"), DeviceIDString);
 217
 218                         puts_P(PSTR("Printer Enumerated.\r\n"));
 219
 220                         USB_HostState = HOST_STATE_Configured;
 221                         break;
 222                 case HOST_STATE_Configured:
 223                         /* Indicate device busy via the status LEDs */
 224                         LEDs_SetAllLEDs(LEDMASK_USB_BUSY);
 225
 226                         char  TestPageData[]    = "\033%-12345X\033E" "LUFA PCL Test Page" "\033E\033%-12345X";
 227                         uint16_t TestPageLength = strlen(TestPageData);
 228
 229                         printf_P(PSTR("Sending Test Page (%d bytes)...\r\n"), TestPageLength);
 230
 231                         if ((ErrorCode = Printer_SendData(&TestPageData, TestPageLength)) != PIPE_RWSTREAM_NoError)
 232                         {
 233                                 printf_P(PSTR(ESC_FG_RED "Error Sending Test Page.\r\n"
 234                                                          " -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
 235
 236                                 /* Indicate error via status LEDs */
 237                                 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 238
 239                                 /* Wait until USB device disconnected */
 240                                 USB_HostState = HOST_STATE_WaitForDeviceRemoval;
 241                                 break;
 242                         }
 243
 244                         puts_P(PSTR("Test Page Sent.\r\n"));
 245
 246                         /* Indicate device no longer busy */
 247                         LEDs_SetAllLEDs(LEDMASK_USB_READY);
 248
 249                         USB_HostState = HOST_STATE_WaitForDeviceRemoval;
 250                         break;
 251         }
 252 }
 253