Demos/Host/ClassDriver/CDCHost/CDCHost.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 CDCHost demo. This file contains the main tasks of
  34  *  the demo and is responsible for the initial application hardware configuration.
  35  */
  36
  37 #include "CDCHost.h"
  38
  39 /** LUFA CDC Class driver interface configuration and state information. This structure is
  40  *  passed to all CDC Class driver functions, so that multiple instances of the same class
  41  *  within a device can be differentiated from one another.
  42  */
  43 USB_ClassInfo_CDC_Host_t VirtualSerial_CDC_Interface =
  44         {
  45                 .Config =
  46                         {
  47                                 .DataINPipeNumber       = 1,
  48                                 .DataOUTPipeNumber      = 2,
  49                                 .NotificationPipeNumber = 3,
  50                         },
  51
  52                 .State =
  53                         {
  54                                 // Leave all state values to their defaults
  55                         }
  56         };
  57
  58 /** Main program entry point. This routine configures the hardware required by the application, then
  59  *  starts the scheduler to run the application tasks.
  60  */
  61 int main(void)
  62 {
  63         SetupHardware();
  64
  65         puts_P(PSTR(ESC_FG_CYAN "CDC Host Demo running.\r\n"));
  66
  67         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
  68
  69         for (;;)
  70         {
  71                 switch (USB_HostState)
  72                 {
  73                         case HOST_STATE_Addressed:
  74                                 if (!(CDC_Host_ConfigurePipes(&VirtualSerial_CDC_Interface)))
  75                                   LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
  76
  77                                 USB_HostState = HOST_STATE_Configured;
  78                                 break;
  79                         case HOST_STATE_Configured:
  80                                 USB_HostState = HOST_STATE_Ready;
  81                                 break;
  82                         case HOST_STATE_Ready:
  83                                 break;
  84                 }
  85
  86                 CDC_Host_USBTask(&VirtualSerial_CDC_Interface);
  87                 USB_USBTask();
  88         }
  89 }
  90
  91 /** Configures the board hardware and chip peripherals for the demo's functionality. */
  92 void SetupHardware(void)
  93 {
  94         /* Disable watchdog if enabled by bootloader/fuses */
  95         MCUSR &= ~(1 << WDRF);
  96         wdt_disable();
  97
  98         /* Disable clock division */
  99         clock_prescale_set(clock_div_1);
 100
 101         /* Hardware Initialization */
 102         SerialStream_Init(9600, false);
 103         LEDs_Init();
 104         USB_Init();
 105 }
 106
 107 /** Event handler for the USB_DeviceAttached event. This indicates that a device has been attached to the host, and
 108  *  starts the library USB task to begin the enumeration and USB management process.
 109  */
 110 void EVENT_USB_DeviceAttached(void)
 111 {
 112         puts_P(PSTR("Device Attached.\r\n"));
 113         LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
 114 }
 115
 116 /** Event handler for the USB_DeviceUnattached event. This indicates that a device has been removed from the host, and
 117  *  stops the library USB task management process.
 118  */
 119 void EVENT_USB_DeviceUnattached(void)
 120 {
 121         puts_P(PSTR("\r\nDevice Unattached.\r\n"));
 122         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
 123 }
 124
 125 /** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully
 126  *  enumerated by the host and is now ready to be used by the application.
 127  */
 128 void EVENT_USB_DeviceEnumerationComplete(void)
 129 {
 130         LEDs_SetAllLEDs(LEDMASK_USB_READY);
 131 }
 132
 133 /** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */
 134 void EVENT_USB_HostError(const uint8_t ErrorCode)
 135 {
 136         USB_ShutDown();
 137
 138         puts_P(PSTR(ESC_FG_RED "Host Mode Error\r\n" ESC_FG_WHITE));
 139         printf_P(PSTR(" -- Error Code %d\r\n"), ErrorCode);
 140
 141         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 142         for(;;);
 143 }
 144
 145 /** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while
 146  *  enumerating an attached USB device.
 147  */
 148 void EVENT_USB_DeviceEnumerationFailed(const uint8_t ErrorCode, const uint8_t SubErrorCode)
 149 {
 150         puts_P(PSTR(ESC_FG_RED "Dev Enum Error\r\n"));
 151         printf_P(PSTR(" -- Error Code %d\r\n"), ErrorCode);
 152         printf_P(PSTR(" -- Sub Error Code %d\r\n"), SubErrorCode);
 153         printf_P(PSTR(" -- In State %d\r\n" ESC_FG_WHITE), USB_HostState);
 154
 155         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 156 }