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
  59 /** Main program entry point. This routine configures the hardware required by the application, then
  60  *  starts the scheduler to run the application tasks.
  61  */
  62 int main(void)
  63 {
  64         SetupHardware();
  65
  66         puts_P(PSTR(ESC_FG_CYAN "CDC Host Demo running.\r\n" ESC_FG_WHITE));
  67
  68         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
  69
  70         for (;;)
  71         {
  72                 switch (USB_HostState)
  73                 {
  74                         case HOST_STATE_Addressed:
  75                                 LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
  76
  77                                 if (CDC_Host_ConfigurePipes(&VirtualSerial_CDC_Interface, 512) != CDC_ENUMERROR_NoError)
  78                                 {
  79                                         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
  80                                         USB_HostState = HOST_STATE_WaitForDeviceRemoval;
  81                                         break;
  82                                 }
  83
  84                                 if (USB_Host_SetDeviceConfiguration(1) != HOST_SENDCONTROL_Successful)
  85                                 {
  86                                         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
  87                                         USB_HostState = HOST_STATE_WaitForDeviceRemoval;
  88                                         break;
  89                                 }
  90
  91                                 USB_HostState = HOST_STATE_Configured;
  92                                 break;
  93                         case HOST_STATE_Configured:
  94                                 break;
  95                 }
  96
  97                 CDC_Host_USBTask(&VirtualSerial_CDC_Interface);
  98                 USB_USBTask();
  99         }
 100 }
 101
 102 /** Configures the board hardware and chip peripherals for the demo's functionality. */
 103 void SetupHardware(void)
 104 {
 105         /* Disable watchdog if enabled by bootloader/fuses */
 106         MCUSR &= ~(1 << WDRF);
 107         wdt_disable();
 108
 109         /* Disable clock division */
 110         clock_prescale_set(clock_div_1);
 111
 112         /* Hardware Initialization */
 113         SerialStream_Init(9600, false);
 114         LEDs_Init();
 115         USB_Init();
 116 }
 117
 118 /** Event handler for the USB_DeviceAttached event. This indicates that a device has been attached to the host, and
 119  *  starts the library USB task to begin the enumeration and USB management process.
 120  */
 121 void EVENT_USB_DeviceAttached(void)
 122 {
 123         puts_P(PSTR("Device Attached.\r\n"));
 124         LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
 125 }
 126
 127 /** Event handler for the USB_DeviceUnattached event. This indicates that a device has been removed from the host, and
 128  *  stops the library USB task management process.
 129  */
 130 void EVENT_USB_DeviceUnattached(void)
 131 {
 132         puts_P(PSTR("\r\nDevice Unattached.\r\n"));
 133         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
 134 }
 135
 136 /** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully
 137  *  enumerated by the host and is now ready to be used by the application.
 138  */
 139 void EVENT_USB_DeviceEnumerationComplete(void)
 140 {
 141         LEDs_SetAllLEDs(LEDMASK_USB_READY);
 142 }
 143
 144 /** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */
 145 void EVENT_USB_HostError(const uint8_t ErrorCode)
 146 {
 147         USB_ShutDown();
 148
 149         puts_P(PSTR(ESC_FG_RED "Host Mode Error\r\n"));
 150         printf_P(PSTR(" -- Error Code %d\r\n" ESC_FG_WHITE), ErrorCode);
 151
 152         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 153         for(;;);
 154 }
 155
 156 /** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while
 157  *  enumerating an attached USB device.
 158  */
 159 void EVENT_USB_DeviceEnumerationFailed(const uint8_t ErrorCode, const uint8_t SubErrorCode)
 160 {
 161         puts_P(PSTR(ESC_FG_RED "Dev Enum Error\r\n"));
 162         printf_P(PSTR(" -- Error Code %d\r\n"), ErrorCode);
 163         printf_P(PSTR(" -- Sub Error Code %d\r\n"), SubErrorCode);
 164         printf_P(PSTR(" -- In State %d\r\n" ESC_FG_WHITE), USB_HostState);
 165
 166         LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 167 }