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

Main Page | Modules | Data Structures | File List | Data Fields | Globals | Related Pages | Examples

include/dev/usart.h File Reference

Detailed Description

Synchronous/asynchronous serial device definitions.

Ring Buffer

#define USART_RXBUFSIZ   256

Initial receive buffer size.

#define USART_RXHIWMARK   240

Receiver's initial high water mark.

#define USART_RXLOWMARK   208

Receiver's initial low water mark.

#define USART_TXBUFSIZ   64

Initial transmit buffer size.

#define USART_TXHIWMARK   56

Transmitter's initial high water mark.

#define USART_TXLOWMARK   40

Transmitter's initial low water mark.

typedef _RINGBUF RINGBUF

Character device ring buffer type.

Initial UART Configuration

#define USART_INITSPEED   115200

Initial bit rate.

Function Prototypes

int UsartInit (NUTDEVICE *dev)

Initialize the USART device.

int UsartIOCtl (NUTDEVICE *dev, int req, void *conf)

Perform USART control functions.

int UsartRead (NUTFILE *fp, void *buffer, int size)

Read from device.

int UsartWrite (NUTFILE *fp, CONST void *buffer, int len)

Write a device or file.

NUTFILE * UsartOpen (NUTDEVICE *dev, CONST char *name, int mode, int acc)

Open an USART device.

int UsartClose (NUTFILE *fp)

Close an USART device.

long UsartSize (NUTFILE *fp)

Retrieves the number of characters in input buffer.

Defines

#define USART_MF_RTSCONTROL

#define USART_MF_CTSSENSE

#define USART_MF_DTRCONTROL

#define USART_MF_DSRSENSE

#define USART_MF_DCDSENSE

#define USART_MF_SENSEMASK

#define USART_MF_CONTROLMASK

#define USART_MF_XONXOFF

Software handshake.

#define USART_MF_LOCALECHO

#define USART_MF_COOKEDMODE

#define USART_MF_NOBUFFER

#define USART_MF_LINEBUFFER

#define USART_MF_BUFFERMASK

#define USART_MF_HALFDUPLEX

#define USART_MF_BLOCKREAD

#define USART_SF_RTSOFF

#define USART_SF_CTSOFF

#define USART_SF_DTROFF

#define USART_SF_DSROFF

#define USART_SF_DCDOFF

#define USART_SF_TXDISABLED

#define USART_SF_RXDISABLED

Typedefs

typedef _USARTDCB USARTDCB