WACOMTABLET WacomOpenTablet(WACOMENGINE hEngine, const char* pszDevice,
WACOMMODEL* pModel)
{
int fd, e;
WACOMTABLET hTablet = NULL;
unsigned int uClass = pModel ? pModel->uClass : 0;
/* open device for read/write access */
fd = open(pszDevice,O_RDWR);
if (fd < 0)
{
e = errno;
WacomLog(hEngine,WACOMLOGLEVEL_ERROR,"Failed to open %s: %s",
pszDevice, strerror(errno));
errno = e;
return NULL;
}
/* configure serial */
if ((!uClass || (uClass == WACOMCLASS_SERIAL)) && WacomIsSerial(fd))
{
hTablet = WacomOpenSerialTablet(hEngine,fd,pModel);
if (!hTablet) { e=errno; close(fd); errno=e; return NULL; }
}
/* configure usb */
else if ((!uClass || (uClass == WACOMCLASS_USB)) && WacomIsUSB(fd))
{
hTablet = WacomOpenUSBTablet(hEngine,fd,pModel);
if (!hTablet) { e=errno; close(fd); errno=e; return NULL; }
}
/* give up */
else
{
close(fd);
errno = EINVAL;
return NULL;
}
return hTablet;
}
int main(int argc, char** argv)
{
const char* pszFile = NULL;
const char* arg;
WACOMENGINE hEngine = NULL;
WACOMTABLET hTablet = NULL;
int nLevel = (int)WACOMLOGLEVEL_WARN;
const char* pszDeviceCls = NULL;
const char* pszDeviceType = NULL;
WACOMMODEL model = { 0 };
//pszDeviceCls // serial and usb class overrides
pszDeviceType = "tpc";
pszFile = "/dev/ttyUSB0";
/* check for device */
if (!pszFile)
{
fprintf(stderr, "unable to open %s\n", pszFile);
exit(1);
}
/* set device class, if provided */
if (pszDeviceCls)
{
model.uClass = WacomGetClassFromName(pszDeviceCls);
if (!model.uClass)
{
fprintf(stderr, "Unrecognized class: %s\n",pszDeviceCls);
exit(1);
}
}
/* set device type, if provided */
if (pszDeviceType)
{
model.uDevice = WacomGetDeviceFromName(pszDeviceType,model.uClass);
if (!model.uDevice)
{
fprintf(stderr, "Unrecognized device: %s\n",pszDeviceType);
exit(1);
}
}
/* open engine */
hEngine = WacomInitEngine();
if (!hEngine)
{
perror("failed to open tablet engine");
exit(1);
}
WacomSetLogFunc(hEngine,LogCallback);
WacomSetLogLevel(hEngine,(WACOMLOGLEVEL)nLevel);
WacomLog(hEngine,WACOMLOGLEVEL_INFO,"Opening log");
/* open tablet */
hTablet = WacomOpenTablet(hEngine,pszFile,&model);
if (!hTablet)
{
perror("WacomOpenTablet");
exit(1);
}
/* get device capabilities, build screen */
if (InitTablet(hTablet))
{
perror("InitTablet");
WacomCloseTablet(hTablet);
exit(1);
}
/* read, parse, and display */
FetchTablet(hTablet);
/* close device */
WacomCloseTablet(hTablet);
WacomTermEngine(hEngine);
/* close log file, if open */
if (gLogFile)
fclose(gLogFile);
return 0;
}
