Demos/Device/ClassDriver/RNDISEthernet/RNDISEthernet.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2013.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2013  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  11
  12   Permission to use, copy, modify, distribute, and sell this
  13   software and its documentation for any purpose is hereby granted
  14   without fee, provided that the above copyright notice appear in
  15   all 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 disclaims 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 RNDISEthernet demo. This file contains the main tasks of
  34  *  the demo and is responsible for the initial application hardware configuration.
  35  */
  36
  37 #include "RNDISEthernet.h"
  38
  39 /** LUFA RNDIS Class driver interface configuration and state information. This structure is
  40  *  passed to all RNDIS 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_RNDIS_Device_t Ethernet_RNDIS_Interface =
  44         {
  45                 .Config =
  46                         {
  47                                 .ControlInterfaceNumber         = 0,
  48                                 .DataINEndpoint                 =
  49                                         {
  50                                                 .Address                = CDC_TX_EPADDR,
  51                                                 .Size                   = CDC_TXRX_EPSIZE,
  52                                                 .Banks                  = 1,
  53                                         },
  54                                 .DataOUTEndpoint                =
  55                                         {
  56                                                 .Address                = CDC_RX_EPADDR,
  57                                                 .Size                   = CDC_TXRX_EPSIZE,
  58                                                 .Banks                  = 1,
  59                                         },
  60                                 .NotificationEndpoint           =
  61                                         {
  62                                                 .Address                = CDC_NOTIFICATION_EPADDR,
  63                                                 .Size                   = CDC_NOTIFICATION_EPSIZE,
  64                                                 .Banks                  = 1,
  65                                         },
  66                                 .AdapterVendorDescription       = "LUFA RNDIS Demo Adapter",
  67                                 .AdapterMACAddress              = {ADAPTER_MAC_ADDRESS},
  68                         },
  69         };
  70
  71 /** Global to store the incoming frame from the host before it is processed by the device. */
  72 static Ethernet_Frame_Info_t FrameIN;
  73
  74 /** Global to store the outgoing frame created in the device before it is sent to the host. */
  75 static Ethernet_Frame_Info_t FrameOUT;
  76
  77 /** Main program entry point. This routine contains the overall program flow, including initial
  78  *  setup of all components and the main program loop.
  79  */
  80 int main(void)
  81 {
  82         SetupHardware();
  83
  84         TCP_Init();
  85         Webserver_Init();
  86
  87         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
  88         GlobalInterruptEnable();
  89
  90         for (;;)
  91         {
  92                 if (RNDIS_Device_IsPacketReceived(&Ethernet_RNDIS_Interface))
  93                 {
  94                         LEDs_SetAllLEDs(LEDMASK_USB_BUSY);
  95
  96                         RNDIS_Device_ReadPacket(&Ethernet_RNDIS_Interface, &FrameIN.FrameData, &FrameIN.FrameLength);
  97                         Ethernet_ProcessPacket(&FrameIN, &FrameOUT);
  98
  99                         if (FrameOUT.FrameLength)
 100                         {
 101                                 RNDIS_Device_SendPacket(&Ethernet_RNDIS_Interface, &FrameOUT.FrameData, FrameOUT.FrameLength);
 102                                 FrameOUT.FrameLength = 0;
 103                         }
 104
 105                         LEDs_SetAllLEDs(LEDMASK_USB_READY);
 106                 }
 107
 108                 TCP_TCPTask(&Ethernet_RNDIS_Interface, &FrameOUT);
 109
 110                 RNDIS_Device_USBTask(&Ethernet_RNDIS_Interface);
 111                 USB_USBTask();
 112         }
 113 }
 114
 115 /** Configures the board hardware and chip peripherals for the demo's functionality. */
 116 void SetupHardware(void)
 117 {
 118 #if (ARCH == ARCH_AVR8)
 119         /* Disable watchdog if enabled by bootloader/fuses */
 120         MCUSR &= ~(1 << WDRF);
 121         wdt_disable();
 122
 123         /* Disable clock division */
 124         clock_prescale_set(clock_div_1);
 125 #elif (ARCH == ARCH_XMEGA)
 126         /* Start the PLL to multiply the 2MHz RC oscillator to 32MHz and switch the CPU core to run from it */
 127         XMEGACLK_StartPLL(CLOCK_SRC_INT_RC2MHZ, 2000000, F_CPU);
 128         XMEGACLK_SetCPUClockSource(CLOCK_SRC_PLL);
 129
 130         /* Start the 32MHz internal RC oscillator and start the DFLL to increase it to 48MHz using the USB SOF as a reference */
 131         XMEGACLK_StartInternalOscillator(CLOCK_SRC_INT_RC32MHZ);
 132         XMEGACLK_StartDFLL(CLOCK_SRC_INT_RC32MHZ, DFLL_REF_INT_USBSOF, F_USB);
 133
 134         PMIC.CTRL = PMIC_LOLVLEN_bm | PMIC_MEDLVLEN_bm | PMIC_HILVLEN_bm;
 135 #endif
 136
 137         /* Hardware Initialization */
 138         LEDs_Init();
 139         Serial_Init(9600, false);
 140         USB_Init();
 141
 142         /* Create a stdio stream for the serial port for stdin and stdout */
 143         Serial_CreateStream(NULL);
 144 }
 145
 146 /** Event handler for the library USB Connection event. */
 147 void EVENT_USB_Device_Connect(void)
 148 {
 149         LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
 150 }
 151
 152 /** Event handler for the library USB Disconnection event. */
 153 void EVENT_USB_Device_Disconnect(void)
 154 {
 155         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
 156 }
 157
 158 /** Event handler for the library USB Configuration Changed event. */
 159 void EVENT_USB_Device_ConfigurationChanged(void)
 160 {
 161         bool ConfigSuccess = true;
 162
 163         ConfigSuccess &= RNDIS_Device_ConfigureEndpoints(&Ethernet_RNDIS_Interface);
 164
 165         LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
 166 }
 167
 168 /** Event handler for the library USB Control Request reception event. */
 169 void EVENT_USB_Device_ControlRequest(void)
 170 {
 171         RNDIS_Device_ProcessControlRequest(&Ethernet_RNDIS_Interface);
 172 }
 173