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175

Readout of Received Data

Acquires the first barcode in the reception buffer and writes it to the specified buffer. The reception

data SYNTAX is as follows:

Barcode O

Fig. 7.20

SYNTAX

#include "obrlib.h"

int OBR_Read (unsigned char *pBuf);

INPUT

pBuf = Pointer to the buffer that stores the received barcode

OUTPUT

The absolute value shows the number of characters in the received barcode.

The sign indicates the validity of the barcode.

> 0 The read barcode has no data error.

= 0 Either the reception acknowledgment is not performed (OBR_Stat function is

not used) or there is no received data.

< 0 The read barcode has a data error.

Note :

Before reading a barcode using this function, acknowledge reception with the OBR_Stat function.

Note that received barcode data will be cleared from the reception buffer after it has been read by the

OBR_Read function. This means that the following barcode can be read immediately after the

preceding one, even if there is an error, has been read.

Invalidating Code in Buffer

Invalidates a barcode in the reception buffer.

SYNTAX

#include "obrlib.h"

void OBR_Clear();

INPUT

None

OUTPUT

None

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Casio IT-2000D Manual de usuario Pagina 175