2 Visual Components Manuals

Introduction to Visual Components 2.3
endif
endif
if ready = 1 then
VA_Saccess(1,VC_HANDLE)= if
0 then
status = VA_GetCalStatus (1,VC_HANDLE)
VA_Srelease(1,VC_HANDLE)
endif
endif
3.3.8.9.3 Example for C Programming
#include
#include
#include
UINT _GLOBAL ready;
unsigned long VC_HANDLE;
UDINT _GLOBAL status;
_CYCLIC void Initialization (void)
{
if (!ready)
{
VC_HANDLE = VA_Setup(1 "vga"); ,
if (VC_HANDLE)
ready = 1;
}
if (ready)
{
if (!VA_Saccess(1,VC_HANDLE))
{
status = VA_GetCalStatus (1,VC_HANDLE);
VA_Srelease(1,VC_HANDLE);
}
}
}
3.3.8.9.4 Example of a complete touch calibration program
#include
#include
#include
_GLOBAL UINT stat,CalibStatus;
_GLOBAL UINT calib;
_GLOBAL UDINT VCHandle;
_GLOBAL UINT MeinStatus;
_INIT void init(void)
{
calib = 0;
MeinStatus = 0;
VCHandle=0;
}
_CYCLIC void Touchcalib(void)
{
if (!VCHandle)
{
}
else
{
VCHandle = VA_Setup(1, "vis2");
calib = 0;
MeinStatus = 0;
switch (calib)
{
case 0: /* Touch is calibrated */ break;
case 1: calib = 2;break;
case 2:
if (!VA_Saccess(1,VCHandle))
{
CalibStatus=VA_StartTouchCal(1, VCHandle);
3.3.8.9 Touch Screen Calibration − VA_GetCalStatus 145