Casio IT-2000D - Manual (Page 184)

184
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 0
Fig. 7.23
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 indicates the number of characters in the barcode received, and
the sign indicates whether the barcode has a data error.
> 0 The read barcode does not have a data error.
= 0 Either the reception acknowledgment has not been made (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 the error status, reception data, and the number of received data pieces will be cleared from
the reception buffer after a barcode is read by the OBR_Read function.
This means that the following barcode can be read immediately after the preceding one, which may
include 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