Demos/Device/DualCDC/DualCDC.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 #include "DualCDC.h"
  32
  33 USB_ClassInfo_CDC_t VirtualSerial1_CDC_Interface =
  34         {
  35                 .ControlInterfaceNumber     = 0,
  36
  37                 .DataINEndpointNumber       = CDC1_TX_EPNUM,
  38                 .DataINEndpointSize         = CDC_TXRX_EPSIZE,
  39
  40                 .DataOUTEndpointNumber      = CDC1_RX_EPNUM,
  41                 .DataOUTEndpointSize        = CDC_TXRX_EPSIZE,
  42
  43                 .NotificationEndpointNumber = CDC1_NOTIFICATION_EPNUM,
  44                 .NotificationEndpointSize   = CDC_NOTIFICATION_EPSIZE,
  45         };
  46
  47 USB_ClassInfo_CDC_t VirtualSerial2_CDC_Interface =
  48         {
  49                 .ControlInterfaceNumber     = 0,
  50
  51                 .DataINEndpointNumber       = CDC2_TX_EPNUM,
  52                 .DataINEndpointSize         = CDC_TXRX_EPSIZE,
  53
  54                 .DataOUTEndpointNumber      = CDC2_RX_EPNUM,
  55                 .DataOUTEndpointSize        = CDC_TXRX_EPSIZE,
  56
  57                 .NotificationEndpointNumber = CDC2_NOTIFICATION_EPNUM,
  58                 .NotificationEndpointSize   = CDC_NOTIFICATION_EPSIZE,
  59         };
  60
  61 int main(void)
  62 {
  63         SetupHardware();
  64
  65         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
  66
  67         for (;;)
  68         {
  69                 CheckJoystickMovement();
  70
  71                 uint16_t BytesToDiscard = USB_CDC_BytesReceived(&VirtualSerial1_CDC_Interface);
  72                 while (BytesToDiscard--)
  73                   USB_CDC_ReceiveByte(&VirtualSerial1_CDC_Interface);
  74
  75                 uint16_t BytesToEcho = USB_CDC_BytesReceived(&VirtualSerial2_CDC_Interface);
  76                 while (BytesToEcho--)
  77                   USB_CDC_SendByte(&VirtualSerial2_CDC_Interface, USB_CDC_ReceiveByte(&VirtualSerial2_CDC_Interface));
  78
  79                 USB_CDC_USBTask(&VirtualSerial1_CDC_Interface);
  80                 USB_CDC_USBTask(&VirtualSerial2_CDC_Interface);
  81                 USB_USBTask();
  82         }
  83 }
  84
  85 void SetupHardware(void)
  86 {
  87         /* Disable watchdog if enabled by bootloader/fuses */
  88         MCUSR &= ~(1 << WDRF);
  89         wdt_disable();
  90
  91         /* Disable clock division */
  92         clock_prescale_set(clock_div_1);
  93
  94         /* Hardware Initialization */
  95         Joystick_Init();
  96         LEDs_Init();
  97         USB_Init();
  98 }
  99
 100 void CheckJoystickMovement(void)
 101 {
 102         uint8_t     JoyStatus_LCL = Joystick_GetStatus();
 103         char*       ReportString  = NULL;
 104         static bool ActionSent = false;
 105
 106         char* JoystickStrings[] =
 107                 {
 108                         "Joystick Up\r\n",
 109                         "Joystick Down\r\n",
 110                         "Joystick Left\r\n",
 111                         "Joystick Right\r\n",
 112                         "Joystick Pressed\r\n",
 113                 };
 114
 115         if (JoyStatus_LCL & JOY_UP)
 116           ReportString = JoystickStrings[0];
 117         else if (JoyStatus_LCL & JOY_DOWN)
 118           ReportString = JoystickStrings[1];
 119         else if (JoyStatus_LCL & JOY_LEFT)
 120           ReportString = JoystickStrings[2];
 121         else if (JoyStatus_LCL & JOY_RIGHT)
 122           ReportString = JoystickStrings[3];
 123         else if (JoyStatus_LCL & JOY_PRESS)
 124           ReportString = JoystickStrings[4];
 125         else
 126           ActionSent = false;
 127
 128         if ((ReportString != NULL) && (ActionSent == false))
 129         {
 130                 ActionSent = true;
 131
 132                 USB_CDC_SendString(&VirtualSerial1_CDC_Interface, ReportString, strlen(ReportString));
 133         }
 134 }
 135
 136 void EVENT_USB_Connect(void)
 137 {
 138         LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
 139 }
 140
 141 void EVENT_USB_Disconnect(void)
 142 {
 143         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
 144 }
 145
 146 void EVENT_USB_ConfigurationChanged(void)
 147 {
 148         LEDs_SetAllLEDs(LEDMASK_USB_READY);
 149
 150         if (!(USB_CDC_ConfigureEndpoints(&VirtualSerial1_CDC_Interface)))
 151           LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 152
 153         if (!(USB_CDC_ConfigureEndpoints(&VirtualSerial2_CDC_Interface)))
 154           LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 155 }
 156
 157 void EVENT_USB_UnhandledControlPacket(void)
 158 {
 159         USB_CDC_ProcessControlPacket(&VirtualSerial1_CDC_Interface);
 160         USB_CDC_ProcessControlPacket(&VirtualSerial2_CDC_Interface);
 161 }