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Listing available serial ports

In order to list calculators connected by USB, you must use cahute_detect_serial(), while providing it with a callback to either add the USB device to your list or display it.

An example program using this function is the following:

/* Compile using: gcc detect-serial.c `pkg-config cahute --cflags --libs`. */

#include <stdio.h>
#include <cahute.h>

int my_callback(void *cookie, cahute_serial_detection_entry const *entry) {
    printf("New entry data:\n");
    printf("- %s\n", entry->cahute_serial_detection_entry_name);

    return 0;
}

int main(void) {
    cahute_context *context;
    int err;

    err = cahute_create_context(&context);
    if (err) {
        fprintf(
            stderr,
            "cahute_create_context() has returned error %s.\n",
            cahute_get_error_name(err)
        );
        return 1;
    }

    err = cahute_detect_serial(context, &my_callback, NULL);
    if (err)
        fprintf(stderr, "Cahute has returned error 0x%04X.\n", err);

    cahute_destroy_context(context);
    return 0;
}

An example output for this program is the following:

New entry data:
- Path: /dev/ttyUSB0