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_RESET ESC_BG_WHITE ESC_INVERSE_ON ESC_ERASE_DISPLAY
  66                "CDC Host Demo running.\r\n" ESC_INVERSE_OFF));
  67
  68         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
  69
  70         for (;;)
  71         {
  72                 switch (USB_HostState)
  73                 {
  74                         case HOST_STATE_Addressed:
  75                                 if (!(CDC_Host_ConfigurePipes(&VirtualSerial_CDC_Interface)))
  76                                   LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
  77
  78                                 USB_HostState = HOST_STATE_Configured;
  79                                 break;
  80                         case HOST_STATE_Configured:
  81                                 USB_HostState = HOST_STATE_Ready;
  82                                 break;
  83                         case HOST_STATE_Ready:
  84                                 break;
  85                 }
  86
  87                 CDC_Host_USBTask(&VirtualSerial_CDC_Interface);
  88                 USB_USBTask();
  89         }
  90 }
  91
  92 /** Configures the board hardware and chip peripherals for the demo's functionality. */
  93 void SetupHardware(void)
  94 {
  95         /* Disable watchdog if enabled by bootloader/fuses */
  96         MCUSR &= ~(1 << WDRF);
  97         wdt_disable();
  98
  99         /* Disable clock division */
 100         clock_prescale_set(clock_div_1);
 101
 102         /* Hardware Initialization */
 103         SerialStream_Init(9600, false);
 104         LEDs_Init();
 105         USB_Init();
 106 }
 107
 108 /** Event handler for the USB_DeviceAttached event. This indicates that a device has been attached to the host, and
 109  *  starts the library USB task to begin the enumeration and USB management process.
 110  */
 111 void EVENT_USB_DeviceAttached(void)
 112 {
 113         puts_P(PSTR("Device Attached.\r\n"));
 114         LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
 115 }
 116
 117 /** Event handler for the USB_DeviceUnattached event. This indicates that a device has been removed from the host, and
 118  *  stops the library USB task management process.
 119  */
 120 void EVENT_USB_DeviceUnattached(void)
 121 {
 122         puts_P(PSTR("\r\nDevice Unattached.\r\n"));
 123         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
 124 }
 125
 126 /** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully
 127  *  enumerated by the host and is now ready to be used by the application.
 128  */
 129 void EVENT_USB_DeviceEnumerationComplete(void)
 130 {
 131         LEDs_SetAllLEDs(LEDMASK_USB_READY);
 132 }
 133
 134 /** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */
 135 void EVENT_USB_HostError(const uint8_t ErrorCode)
 136 {
 137         USB_ShutDown();
 138
 139         puts_P(PSTR(ESC_BG_RED "Host Mode Error\r\n"));
 140         printf_P(PSTR(" -- Error Code %d\r\n"), ErrorCode);
 141
 142         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 143         for(;;);
 144 }
 145
 146 /** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while
 147  *  enumerating an attached USB device.
 148  */
 149 void EVENT_USB_DeviceEnumerationFailed(const uint8_t ErrorCode, const uint8_t SubErrorCode)
 150 {
 151         puts_P(PSTR(ESC_BG_RED "Dev Enum Error\r\n"));
 152         printf_P(PSTR(" -- Error Code %d\r\n"), ErrorCode);
 153         printf_P(PSTR(" -- Sub Error Code %d\r\n"), SubErrorCode);
 154         printf_P(PSTR(" -- In State %d\r\n"), USB_HostState);
 155
 156         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 157 }