mirror of
https://github.com/oliverschmidt/contiki.git
synced 2024-12-23 01:29:33 +00:00
78 lines
2.0 KiB
C
78 lines
2.0 KiB
C
#include "net/uip.h"
|
|
#include "dev/rtl8019dev.h"
|
|
|
|
/*****************************************************************************
|
|
* Module Name: Realtek 8019AS Driver Interface for uIP-AVR Port
|
|
*
|
|
* Created By: Louis Beaudoin (www.embedded-creations.com)
|
|
*
|
|
* Original Release: September 21, 2002
|
|
*
|
|
* Module Description:
|
|
* Provides three functions to interface with the Realtek 8019AS driver
|
|
* These functions can be called directly from the main uIP control loop
|
|
* to send packets from uip_buf and uip_appbuf, and store incoming packets to
|
|
* uip_buf
|
|
*
|
|
* September 30, 2002 - Louis Beaudoin
|
|
* Modifications required to handle the packet receive function changes in
|
|
* rtl8019.c. There is no longer a need to poll for an empty buffer or
|
|
* an overflow.
|
|
* Added support for the Imagecraft Compiler
|
|
*
|
|
*****************************************************************************/
|
|
|
|
|
|
#define IP_TCP_HEADER_LENGTH 40
|
|
#define TOTAL_HEADER_LENGTH (IP_TCP_HEADER_LENGTH+ETHERNET_HEADER_LENGTH)
|
|
|
|
|
|
|
|
void RTL8019dev_init(void)
|
|
{
|
|
initRTL8019();
|
|
}
|
|
|
|
|
|
void RTL8019dev_send(void)
|
|
{
|
|
RTL8019beginPacketSend(uip_len);
|
|
|
|
// send packet, using data in uip_appdata if over the IP+TCP header size
|
|
if( uip_len <= TOTAL_HEADER_LENGTH ) {
|
|
RTL8019sendPacketData(uip_buf, uip_len);
|
|
} else {
|
|
uip_len -= TOTAL_HEADER_LENGTH;
|
|
RTL8019sendPacketData(uip_buf, TOTAL_HEADER_LENGTH);
|
|
RTL8019sendPacketData((unsigned char *)uip_appdata, uip_len);
|
|
}
|
|
|
|
RTL8019endPacketSend();
|
|
}
|
|
|
|
|
|
|
|
unsigned int RTL8019dev_poll(void)
|
|
{
|
|
unsigned int packetLength;
|
|
|
|
packetLength = RTL8019beginPacketRetreive();
|
|
|
|
// if there's no packet or an error - exit without ending the operation
|
|
if( !packetLength )
|
|
return 0;
|
|
|
|
// drop anything too big for the buffer
|
|
if( packetLength > UIP_BUFSIZE )
|
|
{
|
|
RTL8019endPacketRetreive();
|
|
return 0;
|
|
}
|
|
|
|
// copy the packet data into the uIP packet buffer
|
|
RTL8019retreivePacketData( uip_buf, packetLength );
|
|
RTL8019endPacketRetreive();
|
|
|
|
return packetLength;
|
|
}
|