proconX: Protocol Converter & Gateways

Smart Industrial Communication and Embeddeded Ethernet Solutions

Serial Device Server

Programmable Gateways

Serial/Ethernet Gateway XNUT-100

CAN/Ethernet Gateway XNUT-105

Ethernet CPU Boards

Information and Support

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_IFSTREAM Struct Reference
[Device I/O, Device I/O]

#include <sys/device.h>

Detailed Description

Stream interface information structure.

Deprecated structure. Device drivers should use the device control block.

Data Fields

int(* if_input )(NUTDEVICE *)

Wait for input.

int(* if_output )(NUTDEVICE *)

Initiate output.

int(* if_flush )(NUTDEVICE *)

Wait until output buffer empty.

volatile u_char if_rx_idx

Next input index.

u_char if_rd_idx

Next read index.

volatile u_char if_tx_idx

Next output index.

u_char if_wr_idx

Next write index.

volatile u_char if_tx_act

Set if transmitter running.

u_char if_last_eol

Last end of line character read.

u_char if_rx_buf [256]

Input buffer.

u_char if_tx_buf [256]

Output buffer.