Pavel S / UIPEthernet

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Fork of UIPEthernet by Zoltan Hudak

Embed: (wiki syntax)

« Back to documentation index

UIP device driver functions
Variables

UIP device driver functions
[The UIP TCP/IP stack]

These functions are used by a network device driver for interacting with UIP. More...

Variables

u8_t uip_buf [UIP_BUFSIZE+2]
 The UIP packet buffer.

Detailed Description

These functions are used by a network device driver for interacting with UIP.

Variable Documentation

u8_t uip_buf[UIP_BUFSIZE+2]

The UIP packet buffer.

The uip_buf array is used to hold incoming and outgoing packets. The device driver should place incoming data into this buffer. When sending data, the device driver should read the link level headers and the TCP/IP headers from this buffer. The size of the link level headers is configured by the UIP_LLH_LEN define.

Note:
The application data need not be placed in this buffer, so the device driver must read it from the place pointed to by the uip_appdata pointer as illustrated by the following example: 
 void
 devicedriver_send(void)
 {
    hwsend(&uip_buf[0], UIP_LLH_LEN);
    if(uip_len <= UIP_LLH_LEN + UIP_TCPIP_HLEN) {
      hwsend(&uip_buf[UIP_LLH_LEN], uip_len - UIP_LLH_LEN);
    } else {
      hwsend(&uip_buf[UIP_LLH_LEN], UIP_TCPIP_HLEN);
      hwsend(uip_appdata, uip_len - UIP_TCPIP_HLEN - UIP_LLH_LEN);
    }
 }

Definition at line 138 of file uip.c.

Generated on Tue Jul 12 2022 18:10:58 by  doxygen 1.7.2