Elo TouchSystems 2201L Spezifikationen PDF herunterladen (Seite 75)

Sample Driver Code 65

/* if (diags[1] == 0x20)

printf("Warning touchscreen may not be connected.\n");

else */

if (diags[1] != 0) {

printf("Controller power on diagnostics failed code %02Xh\n",diags[1]);

exit(1);

}

char * errormsg(int errnum)

/* errors generated by SERIAL.C or BUS.C */

{

switch (errnum) {

case NOCONTROLLER:

return("Controller not detected.");

case SHORTED:

return("Touchscreen fault controller is transmitting continuously.");

case CANTSEND:

return("Cannot output to controller.");

case NORESPONSE:

return("Controller not responding.");

case WRONGRESPONSE:

return("Controller not responding correctly.");

}

return("");

}

void quit(char *msg)

/* display error message and abort program */

{

printf("%s\n",msg);

exit(1);

}

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Elo TouchSystems 2201L Spezifikationen Seite 75