vscphlp_getRemoteVariableVSCPdata

int vscphlp_getRemoteVariableVSCPdata( long handle, 
                                const char *pName, 
                                uint16_t *psizeData, 
                                uint8_t *pData )

Parameters

handle

Handle for the communication channel obtained from a call to vscphlp_newsession.

pName

Pointer to a string containing the name of the variable. This name should have a character a-z as its first character and is not case sensitive.

psizeData

Pointer to variable that will hold the size of the data array

pData

Pointer to VSCP data array variable (unsigned char [8] ) that get the value of the string variable.

Return Value

Return VSCP_ERROR_SUCCESS on success, VSCP_ERROR_ERROR on failure. If the connection is closed VSCP_ERROR_CONNECTION is returned. VSCP_ERROR_PARAMETER is returned if called while in a receive loop.

Description

Get variable value from VSCP data variable.

Example

unsigned short size;
memset( dataArray, 0, sizeof( dataArray ) );

// Read a value from a data variable 
if ( VSCP_ERROR_SUCCESS == 
        ( rv = vscphlp_getRemoteVariableVSCPData( handle1, "test_dataarray_variable", dataArray, &size  ) ) )  {
    printf( "Command success: vscphlp_getRemoteVariableVSCPData on channel 1\n" );
    printf(" Value = " );
    for ( int i=0; i<size; i++ ) {
        printf("%d ", dataArray[i] );    
    }
    printf("\n");
}
else {
    printf("\aCommand error: vscphlp_getRemoteVariableVSCPData on channel 1  Error code=%d\n", rv);
}

See Also

vscphlp_setRemoteVariableVSCPdata


Very Simple Control Protocol
This document is licensed under Creative Commons BY 4.0 and can be freely copied, redistributed, remixed, transformed, built upon as long as you give credits to the author((s).

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