C Examples

A variety of examples can be found within examples/c, see below for an example that uses the polling API to receive CAN frames.

size_t deviceCount = 10; // Pre-set to the size of your buffer before the icsneo_findAllDevices() call
neodevice_t devices[10];
icsneo_findAllDevices(devices, &deviceCount);
printf("We found %ull devices\n", deviceCount);
for(size_t i = 0; i < deviceCount; i++) {
    neodevice_t* myDevice = &devices[i];
    char desc[ICSNEO_DEVICETYPE_LONGEST_DESCRIPTION];
    size_t sz = ICSNEO_DEVICETYPE_LONGEST_DESCRIPTION;
    icsneo_describeDevice(myDevice, desc, &sz);
    printf("Found %s\n", desc); // "Found neoVI FIRE 2 CY2345"
}
neodevice_t* myDevice = &devices[0];
if(!icsneo_openDevice(myDevice)) {
    neoevent_t error;
    if(icsneo_getLastError(&error))
        printf("Error! %s\n", error.description);
}
icsneo_goOnline(myDevice); // Start receiving messages
icsneo_enableMessagePolling(myDevice); // Allow the use of icsneo_getMessages() later
sleep(5);
neomessage_t messages[50];
size_t messageCount = 50;
icsneo_getMessages(myDevice, messages, &messageCount, 0 /* non-blocking */);
printf("We got %ull messages!\n", messageCount);
for(size_t i = 0; i < messageCount; i++) {
    if(messages[i].type == ICSNEO_NETWORK_TYPE_CAN) {
        // A message of type CAN should be interperated a neomessage_can_t, so we can cast safely
        neomessage_can_t* canmsg = (neomessage_can_t*)&messages[i];
        // canmsg->arbid is valid here
        // canmsg->data is an uint8_t*, you can check canmsg->length for the length of the payload
        // canmsg->timestamp is the time recorded by the hardware in nanoseconds since (1/1/2007 12:00:00 GMT)
    }
}
icsneo_closeDevice(myDevice);