hidapi list devices

hidapi-enum-tst.c

// hidapi-enum-tst.c -- Demonstrate enumerating
//
// Build with:  (assumes you have checked out 'hidapi' into a side directory)
// Mac:
//  gcc -I ../hidapi/hidapi ../hidapi/mac/hid.c -framework IOKit -framework CoreFoundation hidapi-enum-tst.c -o hidapi-enum-tst 
// Linux (hidraw):
//  gcc -I ../hidapi/hidapi ../hidapi/linux/hid.c -ludev hidapi-enum-tst.c -o hidapi-enum-tst
// Linux (libusb):
// gcc -I ../hidapi/hidapi -I /usr/include/libusb-1.0 ../hidapi/libusb/hid.c -lpthread -lusb-1.0 hidapi-enum-tst.c -o hidapi-enum-tst
//
// Tod E. Kurt / github.com/todbot
//



#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "hidapi.h"

unsigned short vid_to_find = 0x27B8; // ThingM
unsigned short pid_to_find = 0x01ED; // blink1


void printbuf(char* buf, int bufsize) {
  printf("buf:");
  for (int i = 0; i < bufsize; i++) {
    printf("%d,", buf[i]);
  }
  printf("\n");
}

int main(int argc, char* argv[])
{
  int res;
  unsigned char buf[64];
  #define MAX_STR 1024
  wchar_t wstr[MAX_STR];
  hid_device *handle;
  int i;


  // Enumerate and print the HID devices on the system
  struct hid_device_info *devs, *cur_dev;
    char foundpath[MAX_STR]; // 1024 should be enough for anyone :)

  devs = hid_enumerate(0x0, 0x0);
  cur_dev = devs;
  while (cur_dev) {
    printf("Device: vid/pid: %04hx/%04hx\n  path: %s\n  serial_number: %ls usage_page: %x, usage: %x",
      cur_dev->vendor_id, cur_dev->product_id, cur_dev->path, cur_dev->serial_number, cur_dev->usage_page, cur_dev->usage);
    printf("\n");
    printf("  Manufacturer: %ls\n", cur_dev->manufacturer_string);
    printf("  Product:      %ls\n", cur_dev->product_string);
    printf("\n");
    if( cur_dev->vendor_id == vid_to_find && cur_dev->product_id == pid_to_find ) { // && cur_dev->usage_page == 0xFFAB && cur_dev->usage == 0x200 ) {
      printf("Found our device!\n");
      strcpy( foundpath, cur_dev->path );
    }
    cur_dev = cur_dev->next;
  }
  hid_free_enumeration(devs);
  
  
  // Open the device using the VID, PID,
  // and optionally the Serial number.
  // handle = hid_open(0x16C0, 0x0486, NULL);
  // handle = hid_open_path( foundpath );

}