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" ESC_FG_WHITE));
  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                                 {
  76                                         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
  77                                         USB_HostState = HOST_STATE_WaitForDeviceRemoval;
  78                                 }
  79
  80                                 USB_HostState = HOST_STATE_Configured;
  81                                 break;
  82                         case HOST_STATE_Configured:
  83                                 USB_HostState = HOST_STATE_Ready;
  84                                 break;
  85                         case HOST_STATE_Ready:
  86                                 break;
  87                 }
  88
  89                 CDC_Host_USBTask(&VirtualSerial_CDC_Interface);
  90                 USB_USBTask();
  91         }
  92 }
  93
  94 /** Configures the board hardware and chip peripherals for the demo's functionality. */
  95 void SetupHardware(void)
  96 {
  97         /* Disable watchdog if enabled by bootloader/fuses */
  98         MCUSR &= ~(1 << WDRF);
  99         wdt_disable();
 100
 101         /* Disable clock division */
 102         clock_prescale_set(clock_div_1);
 103
 104         /* Hardware Initialization */
 105         SerialStream_Init(9600, false);
 106         LEDs_Init();
 107         USB_Init();
 108 }
 109
 110 /** Event handler for the USB_DeviceAttached event. This indicates that a device has been attached to the host, and
 111  *  starts the library USB task to begin the enumeration and USB management process.
 112  */
 113 void EVENT_USB_DeviceAttached(void)
 114 {
 115         puts_P(PSTR("Device Attached.\r\n"));
 116         LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
 117 }
 118
 119 /** Event handler for the USB_DeviceUnattached event. This indicates that a device has been removed from the host, and
 120  *  stops the library USB task management process.
 121  */
 122 void EVENT_USB_DeviceUnattached(void)
 123 {
 124         puts_P(PSTR("\r\nDevice Unattached.\r\n"));
 125         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
 126 }
 127
 128 /** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully
 129  *  enumerated by the host and is now ready to be used by the application.
 130  */
 131 void EVENT_USB_DeviceEnumerationComplete(void)
 132 {
 133         LEDs_SetAllLEDs(LEDMASK_USB_READY);
 134 }
 135
 136 /** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */
 137 void EVENT_USB_HostError(const uint8_t ErrorCode)
 138 {
 139         USB_ShutDown();
 140
 141         puts_P(PSTR(ESC_FG_RED "Host Mode Error\r\n"));
 142         printf_P(PSTR(" -- Error Code %d\r\n" ESC_FG_WHITE), ErrorCode);
 143
 144         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 145         for(;;);
 146 }
 147
 148 /** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while
 149  *  enumerating an attached USB device.
 150  */
 151 void EVENT_USB_DeviceEnumerationFailed(const uint8_t ErrorCode, const uint8_t SubErrorCode)
 152 {
 153         puts_P(PSTR(ESC_FG_RED "Dev Enum Error\r\n"));
 154         printf_P(PSTR(" -- Error Code %d\r\n"), ErrorCode);
 155         printf_P(PSTR(" -- Sub Error Code %d\r\n"), SubErrorCode);
 156         printf_P(PSTR(" -- In State %d\r\n" ESC_FG_WHITE), USB_HostState);
 157
 158         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 159 }