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