Demos/Device/ClassDriver/RNDISEthernet/RNDISEthernet.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2015.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2015  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 /** Message buffer for RNDIS messages processed by the RNDIS device class driver. */
  40 static uint8_t RNDIS_Message_Buffer[192];
  41
  42 /** Global to store the incoming frame from the host before it is processed by the device. */
  43 static Ethernet_Frame_Info_t FrameIN;
  44
  45 /** Global to store the outgoing frame created in the device before it is sent to the host. */
  46 static Ethernet_Frame_Info_t FrameOUT;
  47
  48 /** LUFA RNDIS Class driver interface configuration and state information. This structure is
  49  *  passed to all RNDIS Class driver functions, so that multiple instances of the same class
  50  *  within a device can be differentiated from one another.
  51  */
  52 USB_ClassInfo_RNDIS_Device_t Ethernet_RNDIS_Interface =
  53         {
  54                 .Config =
  55                         {
  56                                 .ControlInterfaceNumber         = INTERFACE_ID_CDC_CCI,
  57                                 .DataINEndpoint                 =
  58                                         {
  59                                                 .Address                = CDC_TX_EPADDR,
  60                                                 .Size                   = CDC_TXRX_EPSIZE,
  61                                                 .Banks                  = 1,
  62                                         },
  63                                 .DataOUTEndpoint                =
  64                                         {
  65                                                 .Address                = CDC_RX_EPADDR,
  66                                                 .Size                   = CDC_TXRX_EPSIZE,
  67                                                 .Banks                  = 1,
  68                                         },
  69                                 .NotificationEndpoint           =
  70                                         {
  71                                                 .Address                = CDC_NOTIFICATION_EPADDR,
  72                                                 .Size                   = CDC_NOTIFICATION_EPSIZE,
  73                                                 .Banks                  = 1,
  74                                         },
  75                                 .AdapterVendorDescription       = "LUFA RNDIS Demo Adapter",
  76                                 .AdapterMACAddress              = {ADAPTER_MAC_ADDRESS},
  77                                 .MessageBuffer                  = RNDIS_Message_Buffer,
  78                                 .MessageBufferLength            = sizeof(RNDIS_Message_Buffer),
  79                         },
  80         };
  81
  82
  83 /** Main program entry point. This routine contains the overall program flow, including initial
  84  *  setup of all components and the main program loop.
  85  */
  86 int main(void)
  87 {
  88         SetupHardware();
  89
  90         TCP_Init();
  91         Webserver_Init();
  92
  93         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
  94         GlobalInterruptEnable();
  95
  96         for (;;)
  97         {
  98                 if (RNDIS_Device_IsPacketReceived(&Ethernet_RNDIS_Interface))
  99                 {
 100                         LEDs_SetAllLEDs(LEDMASK_USB_BUSY);
 101
 102                         RNDIS_Device_ReadPacket(&Ethernet_RNDIS_Interface, &FrameIN.FrameData, &FrameIN.FrameLength);
 103                         Ethernet_ProcessPacket(&FrameIN, &FrameOUT);
 104
 105                         if (FrameOUT.FrameLength)
 106                         {
 107                                 RNDIS_Device_SendPacket(&Ethernet_RNDIS_Interface, &FrameOUT.FrameData, FrameOUT.FrameLength);
 108                                 FrameOUT.FrameLength = 0;
 109                         }
 110
 111                         LEDs_SetAllLEDs(LEDMASK_USB_READY);
 112                 }
 113
 114                 TCP_TCPTask(&Ethernet_RNDIS_Interface, &FrameOUT);
 115
 116                 RNDIS_Device_USBTask(&Ethernet_RNDIS_Interface);
 117                 USB_USBTask();
 118         }
 119 }
 120
 121 /** Configures the board hardware and chip peripherals for the demo's functionality. */
 122 void SetupHardware(void)
 123 {
 124 #if (ARCH == ARCH_AVR8)
 125         /* Disable watchdog if enabled by bootloader/fuses */
 126         MCUSR &= ~(1 << WDRF);
 127         wdt_disable();
 128
 129         /* Disable clock division */
 130         clock_prescale_set(clock_div_1);
 131 #elif (ARCH == ARCH_XMEGA)
 132         /* Start the PLL to multiply the 2MHz RC oscillator to 32MHz and switch the CPU core to run from it */
 133         XMEGACLK_StartPLL(CLOCK_SRC_INT_RC2MHZ, 2000000, F_CPU);
 134         XMEGACLK_SetCPUClockSource(CLOCK_SRC_PLL);
 135
 136         /* Start the 32MHz internal RC oscillator and start the DFLL to increase it to 48MHz using the USB SOF as a reference */
 137         XMEGACLK_StartInternalOscillator(CLOCK_SRC_INT_RC32MHZ);
 138         XMEGACLK_StartDFLL(CLOCK_SRC_INT_RC32MHZ, DFLL_REF_INT_USBSOF, F_USB);
 139
 140         PMIC.CTRL = PMIC_LOLVLEN_bm | PMIC_MEDLVLEN_bm | PMIC_HILVLEN_bm;
 141 #endif
 142
 143         /* Hardware Initialization */
 144         LEDs_Init();
 145         Serial_Init(9600, false);
 146         USB_Init();
 147
 148         /* Create a stdio stream for the serial port for stdin and stdout */
 149         Serial_CreateStream(NULL);
 150 }
 151
 152 /** Event handler for the library USB Connection event. */
 153 void EVENT_USB_Device_Connect(void)
 154 {
 155         LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
 156 }
 157
 158 /** Event handler for the library USB Disconnection event. */
 159 void EVENT_USB_Device_Disconnect(void)
 160 {
 161         LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
 162 }
 163
 164 /** Event handler for the library USB Configuration Changed event. */
 165 void EVENT_USB_Device_ConfigurationChanged(void)
 166 {
 167         bool ConfigSuccess = true;
 168
 169         ConfigSuccess &= RNDIS_Device_ConfigureEndpoints(&Ethernet_RNDIS_Interface);
 170
 171         LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR);
 172 }
 173
 174 /** Event handler for the library USB Control Request reception event. */
 175 void EVENT_USB_Device_ControlRequest(void)
 176 {
 177         RNDIS_Device_ProcessControlRequest(&Ethernet_RNDIS_Interface);
 178 }
 179