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
  53
  54 /** Main program entry point. This routine configures the hardware required by the application, then
  55  *  starts the scheduler to run the application tasks.
  56  */
  57 int main(void)
  58 {
  59         SetupHardware();
  60
  61         puts_P(PSTR(ESC_FG_CYAN "CDC Host Demo running.\r\n" ESC_FG_WHITE));
  62
  63         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
  64
  65         for (;;)
  66         {
  67                 switch (USB_HostState)
  68                 {
  69                         case HOST_STATE_Addressed:
  70                                 LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
  71
  72                                 uint16_t ConfigDescriptorSize;
  73                                 uint8_t  ConfigDescriptorData[512];
  74
  75                                 if ((USB_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, NULL) != HOST_SENDCONTROL_Successful) ||
  76                                     (ConfigDescriptorSize > sizeof(ConfigDescriptorData)) ||
  77                                         (USB_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, ConfigDescriptorData)))
  78                                 {
  79                                         printf("Error Retrieving Configuration Descriptor.\r\n");
  80                                         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
  81                                         USB_HostState = HOST_STATE_WaitForDeviceRemoval;
  82                                         break;
  83                                 }
  84
  85                                 if (CDC_Host_ConfigurePipes(&VirtualSerial_CDC_Interface,
  86                                                             ConfigDescriptorSize, ConfigDescriptorData) != CDC_ENUMERROR_NoError)
  87                                 {
  88                                         printf("Attached Device Not a Valid CDC Class Device.\r\n");
  89                                         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
  90                                         USB_HostState = HOST_STATE_WaitForDeviceRemoval;
  91                                         break;
  92                                 }
  93
  94                                 if (USB_Host_SetDeviceConfiguration(1) != HOST_SENDCONTROL_Successful)
  95                                 {
  96                                         printf("Error Setting Device Configuration.\r\n");
  97                                         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
  98                                         USB_HostState = HOST_STATE_WaitForDeviceRemoval;
  99                                         break;
 100                                 }
 101
 102                                 printf("CDC Device Enumerated.\r\n");
 103                                 USB_HostState = HOST_STATE_Configured;
 104                                 break;
 105                         case HOST_STATE_Configured:
 106                                 break;
 107                 }
 108
 109                 CDC_Host_USBTask(&VirtualSerial_CDC_Interface);
 110                 USB_USBTask();
 111         }
 112 }
 113
 114 /** Configures the board hardware and chip peripherals for the demo's functionality. */
 115 void SetupHardware(void)
 116 {
 117         /* Disable watchdog if enabled by bootloader/fuses */
 118         MCUSR &= ~(1 << WDRF);
 119         wdt_disable();
 120
 121         /* Disable clock division */
 122         clock_prescale_set(clock_div_1);
 123
 124         /* Hardware Initialization */
 125         SerialStream_Init(9600, false);
 126         LEDs_Init();
 127         USB_Init();
 128 }
 129
 130 /** Event handler for the USB_DeviceAttached event. This indicates that a device has been attached to the host, and
 131  *  starts the library USB task to begin the enumeration and USB management process.
 132  */
 133 void EVENT_USB_DeviceAttached(void)
 134 {
 135         puts_P(PSTR("Device Attached.\r\n"));
 136         LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
 137 }
 138
 139 /** Event handler for the USB_DeviceUnattached event. This indicates that a device has been removed from the host, and
 140  *  stops the library USB task management process.
 141  */
 142 void EVENT_USB_DeviceUnattached(void)
 143 {
 144         puts_P(PSTR("\r\nDevice Unattached.\r\n"));
 145         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
 146 }
 147
 148 /** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully
 149  *  enumerated by the host and is now ready to be used by the application.
 150  */
 151 void EVENT_USB_DeviceEnumerationComplete(void)
 152 {
 153         LEDs_SetAllLEDs(LEDMASK_USB_READY);
 154 }
 155
 156 /** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */
 157 void EVENT_USB_HostError(const uint8_t ErrorCode)
 158 {
 159         USB_ShutDown();
 160
 161         puts_P(PSTR(ESC_FG_RED "Host Mode Error\r\n"));
 162         printf_P(PSTR(" -- Error Code %d\r\n" ESC_FG_WHITE), ErrorCode);
 163
 164         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 165         for(;;);
 166 }
 167
 168 /** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while
 169  *  enumerating an attached USB device.
 170  */
 171 void EVENT_USB_DeviceEnumerationFailed(const uint8_t ErrorCode, const uint8_t SubErrorCode)
 172 {
 173         puts_P(PSTR(ESC_FG_RED "Dev Enum Error\r\n"));
 174         printf_P(PSTR(" -- Error Code %d\r\n"), ErrorCode);
 175         printf_P(PSTR(" -- Sub Error Code %d\r\n"), SubErrorCode);
 176         printf_P(PSTR(" -- In State %d\r\n" ESC_FG_WHITE), USB_HostState);
 177
 178         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 179 }