diff options
Diffstat (limited to 'usb-eth/usb-eth.c')
| -rw-r--r-- | usb-eth/usb-eth.c | 133 |
1 files changed, 133 insertions, 0 deletions
diff --git a/usb-eth/usb-eth.c b/usb-eth/usb-eth.c new file mode 100644 index 0000000..71e4a3b --- /dev/null +++ b/usb-eth/usb-eth.c @@ -0,0 +1,133 @@ +/* + * spreadspace avr utils + * + * + * Copyright (C) 2013-2014 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, 2012. + + 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} + +/** 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 = 0, + + .DataINEndpointNumber = CDC_TX_EPNUM, + .DataINEndpointSize = CDC_TXRX_EPSIZE, + .DataINEndpointDoubleBank = false, + + .DataOUTEndpointNumber = CDC_RX_EPNUM, + .DataOUTEndpointSize = CDC_TXRX_EPSIZE, + .DataOUTEndpointDoubleBank = false, + + .NotificationEndpointNumber = CDC_NOTIFICATION_EPNUM, + .NotificationEndpointSize = CDC_NOTIFICATION_EPSIZE, + .NotificationEndpointDoubleBank = false, + + .AdapterVendorDescription = "LUFA RNDIS Adapter", + .AdapterMACAddress = {ADAPTER_MAC_ADDR}, + }, + }; + +/** 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(); + } +} |