Demos/Host/LowLevel/PrinterHost/PrinterHost.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2012.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2012  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                 PrinterHost_Task();
  54
  55                 USB_USBTask();
  56         }
  57 }
  58
  59 /** Configures the board hardware and chip peripherals for the demo's functionality. */
  60 void SetupHardware(void)
  61 {
  62         /* Disable watchdog if enabled by bootloader/fuses */
  63         MCUSR &= ~(1 << WDRF);
  64         wdt_disable();
  65
  66         /* Disable clock division */
  67         clock_prescale_set(clock_div_1);
  68
  69         /* Hardware Initialization */
  70         Serial_Init(9600, false);
  71         LEDs_Init();
  72         USB_Init();
  73
  74         /* Create a stdio stream for the serial port for stdin and stdout */
  75         Serial_CreateStream(NULL);
  76 }
  77
  78 /** Event handler for the USB_DeviceAttached event. This indicates that a device has been attached to the host, and
  79  *  starts the library USB task to begin the enumeration and USB management process.
  80  */
  81 void EVENT_USB_Host_DeviceAttached(void)
  82 {
  83         puts_P(PSTR(ESC_FG_GREEN "Device Attached.\r\n" ESC_FG_WHITE));
  84         LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
  85 }
  86
  87 /** Event handler for the USB_DeviceUnattached event. This indicates that a device has been removed from the host, and
  88  *  stops the library USB task management process.
  89  */
  90 void EVENT_USB_Host_DeviceUnattached(void)
  91 {
  92         puts_P(PSTR(ESC_FG_GREEN "\r\nDevice Unattached.\r\n" ESC_FG_WHITE));
  93         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
  94 }
  95
  96 /** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully
  97  *  enumerated by the host and is now ready to be used by the application.
  98  */
  99 void EVENT_USB_Host_DeviceEnumerationComplete(void)
 100 {
 101         puts_P(PSTR("Getting Config Data.\r\n"));
 102
 103         uint8_t ErrorCode;
 104
 105         /* Get and process the configuration descriptor data */
 106         if ((ErrorCode = ProcessConfigurationDescriptor()) != SuccessfulConfigRead)
 107         {
 108                 if (ErrorCode == ControlError)
 109                   puts_P(PSTR(ESC_FG_RED "Control Error (Get Configuration).\r\n"));
 110                 else
 111                   puts_P(PSTR(ESC_FG_RED "Invalid Device.\r\n"));
 112
 113                 printf_P(PSTR(" -- Error Code: %d\r\n"), ErrorCode);
 114
 115                 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 116                 return;
 117         }
 118
 119         /* Set the device configuration to the first configuration (rarely do devices use multiple configurations) */
 120         if ((ErrorCode = USB_Host_SetDeviceConfiguration(1)) != HOST_SENDCONTROL_Successful)
 121         {
 122                 printf_P(PSTR(ESC_FG_RED "Control Error (Set Configuration).\r\n"
 123                                          " -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
 124
 125                 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 126                 return;
 127         }
 128
 129         /* Some printers use alternate settings to determine the communication protocol used - if so, send a SetInterface
 130          * request to switch to the interface alternate setting with the Bidirectional protocol */
 131         if (PrinterAltSetting)
 132         {
 133                 if ((ErrorCode = USB_Host_SetInterfaceAltSetting(PrinterInterfaceNumber, PrinterAltSetting)) != HOST_SENDCONTROL_Successful)
 134                 {
 135                         printf_P(PSTR(ESC_FG_RED "Control Error (Set Interface).\r\n"
 136                                                  " -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
 137
 138                         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 139                         USB_Host_SetDeviceConfiguration(0);
 140                         return;
 141                 }
 142         }
 143
 144         puts_P(PSTR("Retrieving Device ID...\r\n"));
 145
 146         char DeviceIDString[300];
 147         if ((ErrorCode = Printer_GetDeviceID(DeviceIDString, sizeof(DeviceIDString))) != HOST_SENDCONTROL_Successful)
 148         {
 149                 printf_P(PSTR(ESC_FG_RED "Control Error (Get Device ID).\r\n"
 150                                          " -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
 151
 152                 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 153                 USB_Host_SetDeviceConfiguration(0);
 154                 return;
 155         }
 156
 157         printf_P(PSTR("Printer Device ID: %s\r\n"), DeviceIDString);
 158
 159         puts_P(PSTR("Printer Enumerated.\r\n"));
 160         LEDs_SetAllLEDs(LEDMASK_USB_READY);
 161 }
 162
 163 /** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */
 164 void EVENT_USB_Host_HostError(const uint8_t ErrorCode)
 165 {
 166         USB_Disable();
 167
 168         printf_P(PSTR(ESC_FG_RED "Host Mode Error\r\n"
 169                                  " -- Error Code %d\r\n" ESC_FG_WHITE), ErrorCode);
 170
 171         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 172         for(;;);
 173 }
 174
 175 /** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while
 176  *  enumerating an attached USB device.
 177  */
 178 void EVENT_USB_Host_DeviceEnumerationFailed(const uint8_t ErrorCode,
 179                                             const uint8_t SubErrorCode)
 180 {
 181         printf_P(PSTR(ESC_FG_RED "Dev Enum Error\r\n"
 182                                  " -- Error Code %d\r\n"
 183                                  " -- Sub Error Code %d\r\n"
 184                                  " -- In State %d\r\n" ESC_FG_WHITE), ErrorCode, SubErrorCode, USB_HostState);
 185
 186         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 187 }
 188
 189 /** Task to manage an enumerated USB printer once connected, to display device
 190  *  information and print a test PCL page.
 191  */
 192 void PrinterHost_Task(void)
 193 {
 194         if (USB_HostState != HOST_STATE_Configured)
 195           return;
 196
 197         uint8_t ErrorCode;
 198
 199         /* Indicate device busy via the status LEDs */
 200         LEDs_SetAllLEDs(LEDMASK_USB_BUSY);
 201
 202         char  TestPageData[]    = "\033%-12345X\033E" "LUFA PCL Test Page" "\033E\033%-12345X";
 203         uint16_t TestPageLength = strlen(TestPageData);
 204
 205         printf_P(PSTR("Sending Test Page (%d bytes)...\r\n"), TestPageLength);
 206
 207         /* Send the test page to the attached printer */
 208         if ((ErrorCode = Printer_SendData(&TestPageData, TestPageLength)) != PIPE_RWSTREAM_NoError)
 209         {
 210                 printf_P(PSTR(ESC_FG_RED "Error Sending Test Page.\r\n"
 211                                          " -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode);
 212
 213                 LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 214                 USB_Host_SetDeviceConfiguration(0);
 215                 return;
 216         }
 217
 218         puts_P(PSTR("Test Page Sent.\r\n"));
 219
 220         /* Indicate device no longer busy */
 221         LEDs_SetAllLEDs(LEDMASK_USB_READY);
 222         USB_Host_SetDeviceConfiguration(0);
 223 }
 224