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/*
* spreadspace avr utils
*
*
* Copyright (C) 2013-2015 Christian Pointner <equinox@spreadspace.org>
*
* This file is part of spreadspace avr utils.
*
* spreadspace avr utils is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* any later version.
*
* spreadspace avr utils is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with spreadspace avr utils. If not, see <http://www.gnu.org/licenses/>.
*/
#include <avr/io.h>
#include <avr/wdt.h>
#include <avr/interrupt.h>
#include <avr/power.h>
#include <string.h>
#include "util.h"
#include "led.h"
/*
LUFA Library
Copyright (C) Dean Camera, 2014.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
#include <LUFA/Version.h>
#include <LUFA/Drivers/USB/USB.h>
#include "lufa-descriptor-rndis.h"
#define ADAPTER_MAC_ADDR {0x02, 0x00, 0x02, 0x00, 0x02, 0x00}
#define MY_MAC_ADDR {0x01, 0x02, 0x03, 0x04, 0x05, 0x06}
static uint8_t RNDIS_Message_Buffer[192];
/** LUFA RNDIS Class driver interface configuration and state information. This structure is
* passed to all RNDIS Class driver functions, so that multiple instances of the same class
* within a device can be differentiated from one another.
*/
USB_ClassInfo_RNDIS_Device_t Ethernet_RNDIS_Interface =
{
.Config =
{
.ControlInterfaceNumber = INTERFACE_ID_CDC_CCI,
.DataINEndpoint =
{
.Address = CDC_TX_EPADDR,
.Size = CDC_TXRX_EPSIZE,
.Banks = 1,
},
.DataOUTEndpoint =
{
.Address = CDC_RX_EPADDR,
.Size = CDC_TXRX_EPSIZE,
.Banks = 1,
},
.NotificationEndpoint =
{
.Address = CDC_NOTIFICATION_EPADDR,
.Size = CDC_NOTIFICATION_EPSIZE,
.Banks = 1,
},
.AdapterVendorDescription = "LUFA RNDIS Demo Adapter",
.AdapterMACAddress = {ADAPTER_MAC_ADDR},
.MessageBuffer = RNDIS_Message_Buffer,
.MessageBufferLength = sizeof(RNDIS_Message_Buffer),
},
};
/** Event handler for the library USB Configuration Changed event. */
void EVENT_USB_Device_ConfigurationChanged(void)
{
RNDIS_Device_ConfigureEndpoints(&Ethernet_RNDIS_Interface);
}
/** Event handler for the library USB Control Request reception event. */
void EVENT_USB_Device_ControlRequest(void)
{
RNDIS_Device_ProcessControlRequest(&Ethernet_RNDIS_Interface);
}
/* end LUFA RNDIS Class driver specific definitions*/
typedef uint8_t mac_addr_t[6];
typedef struct __attribute__((__packed__))
{
mac_addr_t dest;
mac_addr_t src;
uint16_t ether_type;
} ethernet_frame_header_t;
typedef struct {
uint8_t data[1550];
uint16_t len;
} ethernet_buf_t;
ethernet_buf_t eth_recv_buf;
ethernet_frame_header_t* eth_recv_hdr = (ethernet_frame_header_t*)eth_recv_buf.data;
mac_addr_t my_mac = MY_MAC_ADDR;
int main(void)
{
MCUSR &= ~(1 << WDRF);
wdt_disable();
cpu_init();
led_init();
USB_Init();
sei();
led_off();
for (;;) {
if (RNDIS_Device_IsPacketReceived(&Ethernet_RNDIS_Interface))
{
led_on();
RNDIS_Device_ReadPacket(&Ethernet_RNDIS_Interface, eth_recv_buf.data, &(eth_recv_buf.len));
memcpy(eth_recv_hdr->dest, eth_recv_hdr->src, sizeof(mac_addr_t));
memcpy(eth_recv_hdr->src, my_mac, sizeof(mac_addr_t));
RNDIS_Device_SendPacket(&Ethernet_RNDIS_Interface, eth_recv_buf.data, eth_recv_buf.len);
led_off();
}
RNDIS_Device_USBTask(&Ethernet_RNDIS_Interface);
USB_USBTask();
}
}
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