examples_discovery.c

Device discovery

#include "examples.h"

void CAEN_MCA_EXAMPLES_DiscoverDevices(void) {
    int32_t ret = CAEN_MCA_RetCode_Success;

    // Get the handle to the Library.
    CAEN_MCA_HANDLE library = CAEN_MCA_GetChildHandle(NULL, CAEN_MCA_HANDLE_LIBRARY, 0);

    // Set the timeout to 3000 ms
    uint64_t timeout_ms = 3000;

    ret |= CAEN_MCA_SetData(
        library,
        CAEN_MCA_DATA_DISCOVEREDDEVICES,
        DATAMASK_DISCOVERY_TIMEOUT_MS,
        timeout_ms
    );

    // Search and get the discovered devices. The function will return after 3000 ms
    uint32_t cnt_found = 0;
    char **names = malloc(DISCOVERY_LIST_MAXLEN * sizeof(*names));
    uint32_t *serial_numbers = malloc(DISCOVERY_LIST_MAXLEN * sizeof(*serial_numbers));
    char **ip_addresses = malloc(DISCOVERY_LIST_MAXLEN * sizeof(*ip_addresses));
    uint32_t *input_channels = malloc(DISCOVERY_LIST_MAXLEN * sizeof(*input_channels));
    char **model_names = malloc(DISCOVERY_LIST_MAXLEN * sizeof(*model_names));
    char **paths = malloc(DISCOVERY_LIST_MAXLEN * sizeof(*paths));

    for (int32_t i = 0; i < DISCOVERY_LIST_MAXLEN; i++) {
        if (names != NULL) names[i] = calloc(DISCOVERY_NAME_MAXLEN, sizeof(*names[i]));
        if (ip_addresses != NULL) ip_addresses[i] = calloc(DISCOVERY_IP_MAXLEN, sizeof(*ip_addresses[i]));
        if (model_names != NULL) model_names[i] = calloc(DISCOVERY_IP_MAXLEN, sizeof(*ip_addresses[i]));
        if (paths != NULL) paths[i] = calloc(DISCOVERY_IP_MAXLEN, sizeof(*ip_addresses[i]));
    }

    ret |= CAEN_MCA_GetData(
        library,
        CAEN_MCA_DATA_DISCOVEREDDEVICES,
        DATAMASK_DISCOVERY_FOUNDCOUNT |
        DATAMASK_DISCOVERY_NAME |
        DATAMASK_DISCOVERY_SERIALNUMBER |
        DATAMASK_DISCOVERY_IP |
        DATAMASK_DISCOVERY_INPUT_CHANNELS |
        DATAMASK_DISCOVERY_MODEL_NAME |
        DATAMASK_DISCOVERY_PATH,
        &cnt_found,
        names,
        serial_numbers,
        ip_addresses,
        input_channels,
        model_names,
        paths
    );

    if (ret != CAEN_MCA_RetCode_Success) {
        // Error
        fprintf(stderr, "%s(): failed. Error: '%"PRIi32"'.\n", __func__, ret);
    }

    else {
        fprintf(stdout, "Number of devices found: %"PRIu32"\n", cnt_found);

        for (uint32_t i = 0; i < cnt_found; i++) {
            // Use your results here
            fprintf(stdout, "%"PRIu32": ", i);
            fprintf(stdout, "Name: %s\t", names[i]);
            fprintf(stdout, "Model name: %s\t", model_names[i]);
            fprintf(stdout, "Serial number: %"PRIu32"\t", serial_numbers[i]);
            fprintf(stdout, "Input channels: %"PRIu32"\t", input_channels[i]);
            fprintf(stdout, "IP address: %s\t", ip_addresses[i]);
            fprintf(stdout, "Path: %s\t", paths[i]);
            fprintf(stdout, "\n");
        }
    }

    // Free data
    for (int32_t i = 0; i < DISCOVERY_LIST_MAXLEN; i++) {
        if (names != NULL) free(names[i]);
        if (ip_addresses != NULL) free(ip_addresses[i]);
        if (model_names != NULL) free(model_names[i]);
        if (paths != NULL) free(paths[i]);
    }
    free(names);
    free(ip_addresses);
    free(model_names);
    free(paths);
}