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When specifying the needed include files we have included the gxsdldr.c loader file directly:
Defining the number of devices limit:
#define MAXDEVICES 100 /* Maximal number of devices */
Starting the main function and defining the needed variables:
/* * Main function. */ int main(void) { int st, i; char errbuf[256]; int errcode; struct GX_DEVICE_INFOA *devices; char type[sizeof(devices->type)+1]; char devname[sizeof(devices->devname)+1];
Allocating the buffer for the device list:
/* Allocates the array for information of devices */
int ndevices = MAXDEVICES;
devices = (struct GX_DEVICE_INFOA *)malloc(
sizeof(struct GX_DEVICE_INFOA)*MAXDEVICES);
if(!devices) {
fprintf(stderr, "** Out of memory\n");
return 1;
}
Getting the device list:
/* Calls the listdevices function */
st = gx_listdevicesa(&ndevices, devices, 0, 0);
If an error occured, then the return value is 0. In this case displaying the error code and message and ending the sample program:
if(!st) { free(devices); errcode = gx_geterrora(0, errbuf, sizeof(errbuf)); errbuf[sizeof(errbuf)-1] = 0; fprintf(stderr, "** GX Error: (%x) %s\n", errcode, errbuf); return 1; }
If no devices found then displaying message and ending the sample program:
/* Displays devices */
if(ndevices == 0) {
free(devices);
printf("No GX devices.\n");
return 0;
}
If one or more devices found then displaying general informations and ending the sample program:
printf("GX devices in the system:\n");
type[sizeof(type)-1] = 0;
devname[sizeof(devname)-1] = 0;
for(i = 0; i < ndevices; i++) {
strncpy(type, devices[i].type, sizeof(type)-1);
strncpy(devname, devices[i].devname, sizeof(devname)-1);
printf("%3i. Name: %s, Type: %s, Serial: %08x, Prio: %i\n",
i+1, devname, type, devices[i].serial, devices[i].priority);
}
printf("%i devices found.\n", ndevices);
/* Frees the array */
free(devices);
return 0;
}
When specifying the needed include files we have included the gxsdldr.c loader file directly:
Starting the main function and defining the needed variables:
/* * Main function. */ int main(void) { int st; char errbuf[256]; int errcode; /* Define a GX_SYSTEM_INFO structure to store the informations */ GX_SYSTEM_INFO gxinfo;
Setting the size member properly:
/* Set the size of the structure. We will get maximum size number of bytes. */
memset(&gxinfo,0,sizeof(GX_SYSTEM_INFO));
gxinfo.size = sizeof(GX_SYSTEM_INFO);
Getting system informations:
/* Calls the getsysteminfo function */
st = gx_getsysteminfo(&gxinfo);
if(!st) {
errcode = gx_geterrora(0, errbuf, sizeof(errbuf));
errbuf[sizeof(errbuf)-1] = 0;
fprintf(stderr, "** GX Error: (%x) %s\n", errcode, errbuf);
return 1;
}
Displaying the result and ending program:
/* Displays the informations */
printf("GX licences in the system:\n");
printf("Freeflow licences: %i\n",gxinfo.cm_ff);
printf("Parking licences: %i\n",gxinfo.cm_park);
printf("Container licences: %i\n",gxinfo.cm_accr);
printf("Parking Lane licences: %i\n",gxinfo.cm_pl);
printf("Face ident licences: %i\n",gxinfo.cm_face);
printf("Passport Reader licences: %i\n",gxinfo.pr);
return 0;
}