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_IFSTREAM Struct Reference
[Device I/ODevice 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.


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