Demos/Host/LowLevel/PrinterHost/PrinterHost.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2009.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6       www.fourwalledcubicle.com
   7 */
   8
   9 /*
  10   Copyright 2009  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  11
  12   Permission to use, copy, modify, and distribute this software
  13   and its documentation for any purpose and without fee is hereby
  14   granted, provided that the above copyright notice appear in all
  15   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  *  starts the scheduler to run the application tasks.
  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
  50         for (;;)
  51         {
  52                 USB_Printer_Host();
  53                 USB_USBTask();
  54         }
  55 }
  56
  57 /** Configures the board hardware and chip peripherals for the demo's functionality. */
  58 void SetupHardware(void)
  59 {
  60         /* Disable watchdog if enabled by bootloader/fuses */
  61         MCUSR &= ~(1 << WDRF);
  62         wdt_disable();
  63
  64         /* Disable clock division */
  65         clock_prescale_set(clock_div_1);
  66
  67         /* Hardware Initialization */
  68         SerialStream_Init(9600, false);
  69         LEDs_Init();
  70         USB_Init();
  71 }
  72
  73 /** Event handler for the USB_DeviceAttached event. This indicates that a device has been attached to the host, and
  74  *  starts the library USB task to begin the enumeration and USB management process.
  75  */
  76 void EVENT_USB_DeviceAttached(void)
  77 {
  78         puts_P(PSTR(ESC_FG_GREEN "Device Attached.\r\n" ESC_FG_WHITE));
  79         LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
  80 }
  81
  82 /** Event handler for the USB_DeviceUnattached event. This indicates that a device has been removed from the host, and
  83  *  stops the library USB task management process.
  84  */
  85 void EVENT_USB_DeviceUnattached(void)
  86 {
  87         puts_P(PSTR(ESC_FG_GREEN "\r\nDevice Unattached.\r\n" ESC_FG_WHITE));
  88         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
  89 }
  90
  91 /** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully
  92  *  enumerated by the host and is now ready to be used by the application.
  93  */
  94 void EVENT_USB_DeviceEnumerationComplete(void)
  95 {
  96         LEDs_SetAllLEDs(LEDMASK_USB_READY);
  97 }
  98
  99 /** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */
 100 void EVENT_USB_HostError(uint8_t ErrorCode)
 101 {
 102         USB_ShutDown();
 103
 104         puts_P(PSTR(ESC_FG_RED "Host Mode Error\r\n"));
 105         printf_P(PSTR(" -- Error Code %d\r\n" ESC_FG_WHITE), ErrorCode);
 106
 107         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 108         for(;;);
 109 }
 110
 111 /** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while
 112  *  enumerating an attached USB device.
 113  */
 114 void EVENT_USB_DeviceEnumerationFailed(uint8_t ErrorCode, uint8_t SubErrorCode)
 115 {
 116         puts_P(PSTR(ESC_FG_RED "Dev Enum Error\r\n"));
 117         printf_P(PSTR(" -- Error Code %d\r\n"), ErrorCode);
 118         printf_P(PSTR(" -- Sub Error Code %d\r\n"), SubErrorCode);
 119         printf_P(PSTR(" -- In State %d\r\n" ESC_FG_WHITE), USB_HostState);
 120
 121         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 122 }
 123
 124 /** Task to set the configuration of the attached device after it has been enumerated, and to send some test page
 125  *  data to the attached printer.
 126  */
 127 void USB_Printer_Host(void)
 128 {
 129         uint8_t ErrorCode;
 130
 131         switch (USB_HostState)
 132         {
 133                 case HOST_STATE_Addressed:
 134                         puts_P(PSTR("Getting Config Data.\r\n"));
 135
 136                         /* Select the control pipe for the request transfer */
 137                         Pipe_SelectPipe(PIPE_CONTROLPIPE);
 138
 139                         /* Get and process the configuration descriptor data */
 140                         if ((ErrorCode = ProcessConfigurationDescriptor()) != SuccessfulConfigRead)
 141                         {
 142                                 if (ErrorCode == ControlError)
 143                                   puts_P(PSTR(ESC_FG_RED "Control Error (Get Configuration).\r\n"));
 144                                 else
 145                                   puts_P(PSTR(ESC_FG_RED "Invalid Device.\r\n"));
 146
 147                                 printf_P(PSTR(" -- Error Code: %d\r\n"), ErrorCode);
 148
 149                                 /* Indicate error via status LEDs */
 150                                 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 151
 152                                 /* Wait until USB device disconnected */
 153                                 USB_HostState = HOST_STATE_WaitForDeviceRemoval;
 154                                 break;
 155                         }
 156
 157                         /* Set the device configuration to the first configuration (rarely do devices use multiple configurations) */
 158                         if ((ErrorCode = USB_Host_SetDeviceConfiguration(1)) != HOST_SENDCONTROL_Successful)
 159                         {
 160                                 puts_P(PSTR(ESC_FG_RED "Control Error (Set Configuration).\r\n"));
 161                                 printf_P(PSTR(" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
 162
 163                                 /* Indicate error via status LEDs */
 164                                 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 165
 166                                 /* Wait until USB device disconnected */
 167                                 USB_HostState = HOST_STATE_WaitForDeviceRemoval;
 168                                 break;
 169                         }
 170
 171                         /* Some printers use alternate settings to determine the communication protocol used - if so, send a SetInterface
 172                          * request to switch to the interface alternate setting with the Bidirectional protocol */
 173                         if (PrinterAltSetting)
 174                         {
 175                                 USB_ControlRequest = (USB_Request_Header_t)
 176                                         {
 177                                                 bmRequestType: (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_INTERFACE),
 178                                                 bRequest:      REQ_SetInterface,
 179                                                 wValue:        PrinterAltSetting,
 180                                                 wIndex:        PrinterInterfaceNumber,
 181                                                 wLength:       0,
 182                                         };
 183
 184                                 if ((ErrorCode = USB_Host_SendControlRequest(NULL)) != HOST_SENDCONTROL_Successful)
 185                                 {
 186                                         puts_P(PSTR(ESC_FG_RED "Control Error (Set Interface).\r\n"));
 187                                         printf_P(PSTR(" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
 188
 189                                         /* Indicate error via status LEDs */
 190                                         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 191
 192                                         /* Wait until USB device disconnected */
 193                                         USB_HostState = HOST_STATE_WaitForDeviceRemoval;
 194                                         break;
 195                                 }
 196                         }
 197
 198                         puts_P(PSTR("Retrieving Device ID...\r\n"));
 199
 200                         char DeviceIDString[256];
 201                         if ((ErrorCode = Printer_GetDeviceID(DeviceIDString, sizeof(DeviceIDString))) != HOST_SENDCONTROL_Successful)
 202                         {
 203                                 puts_P(PSTR(ESC_FG_RED "Control Error (Get DeviceID).\r\n"));
 204                                 printf_P(PSTR(" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
 205
 206                                 /* Indicate error via status LEDs */
 207                                 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 208
 209                                 /* Wait until USB device disconnected */
 210                                 USB_HostState = HOST_STATE_WaitForDeviceRemoval;
 211                                 break;
 212                         }
 213
 214                         printf_P(PSTR("Printer Device ID: %s\r\n"), DeviceIDString);
 215
 216                         puts_P(PSTR("Printer Enumerated.\r\n"));
 217
 218                         USB_HostState = HOST_STATE_Configured;
 219                         break;
 220                 case HOST_STATE_Configured:
 221                         /* Indicate device busy via the status LEDs */
 222                         LEDs_SetAllLEDs(LEDMASK_USB_BUSY);
 223
 224                         Printer_Data_t TestPageData =
 225                                 {
 226                                         "\033%-12345X\033E" "LUFA PCL Test Page" "\033E\033%-12345X",
 227                                         (sizeof(TestPageData.Data) - 1)
 228                                 };
 229
 230                         printf_P(PSTR("Sending Test Page (%d bytes)...\r\n"), TestPageData.Length);
 231
 232                         if ((ErrorCode = Printer_SendData(&TestPageData)) != PIPE_RWSTREAM_NoError)
 233                         {
 234                                 puts_P(PSTR(ESC_FG_RED "Error Sending Test Page.\r\n"));
 235                                 printf_P(PSTR(" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
 236
 237                                 /* Indicate error via status LEDs */
 238                                 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 239
 240                                 /* Wait until USB device disconnected */
 241                                 USB_HostState = HOST_STATE_WaitForDeviceRemoval;
 242                                 break;
 243                         }
 244
 245                         puts_P(PSTR("Test Page Sent.\r\n"));
 246
 247                         /* Indicate device no longer busy */
 248                         LEDs_SetAllLEDs(LEDMASK_USB_READY);
 249
 250                         USB_HostState = HOST_STATE_WaitForDeviceRemoval;
 251                         break;
 252         }
 253 }