diff --git a/src/radio.rs b/src/radio.rs
index 40cddae..fd0711b 100644
--- a/src/radio.rs
+++ b/src/radio.rs
@@ -1,6 +1,7 @@
 use std::ffi::{CStr, CString};
-use libc::{c_char, c_int};
+use libc::{c_char, c_int, c_uint};
 use std::os::unix::io::AsRawFd;
+use sys::process::exit;
 
 include!(concat!(env!("OUT_DIR"), "/bindings.rs"));
 
@@ -24,19 +25,74 @@ extern {
   fn radio_parse_config(device: *const radio_device_t, filename: *const c_char);
   fn radio_write_csv(device: *const radio_device_t, filename: *const c_char);
 
+  fn dfu_init(vid: c_uint, pid: c_uint) -> *const c_char;
   fn dfu_reboot();
   fn dfu_close();
+
+  fn hid_init(vid: c_int, pid: c_int) -> c_int;
+  fn hid_identify() -> *const c_char;
   fn hid_close();
+
+  fn serial_init(vid: c_int, pid: c_int) -> c_int;
+  fn serial_identify() -> *const c_char;
   fn serial_close();
 
   fn get_radio_tab() -> *const radio_tab_t;
 }
 
 /// Connect to the radio via the serial port.
-/// Identify the type of device.
+/// and identify the type of device.
 pub fn connect() -> *const radio_device_t {
   unsafe {
-    radio_connect()
+
+    let mut ident: *const c_char = std::ptr::null();
+    // Try TYT MD family.
+    ident = dfu_init(0x0483, 0xdf11);
+    if ident.is_null() {
+      // Try RD-5R, DM-1801 and GD-77.
+      if (hid_init(0x15a2, 0x0073) >= 0)
+        ident = hid_identify();
+    }
+
+    if ident.is_null() {
+      // Try AT-D868UV.
+      if (serial_init(0x28e9, 0x018a) >= 0)
+        ident = serial_identify();
+    }
+
+    if ident.is_null() {
+        eprintln!("No radio detected.");
+        eprintln!("Check your USB cable!");
+        exit(-1);
+    }
+
+    let mut device: *const radio_device_t = std::ptr::null();
+
+    let mut ptr = get_radio_tab();
+    let ident_str = CStr::from_ptr(ident).to_str().unwrap();
+    loop {
+      let ident_ptr = (*ptr).ident;
+      if ident_ptr.is_null() {
+        break;
+      }
+      let name_ptr = (*(*ptr).device).name;
+
+      let table_ident = CStr::from_ptr(ident_ptr).to_str().unwrap().to_string();
+      if table_ident.eq_ignore_ascii_case(ident_str) {
+        device = ptr;
+        break;
+      }
+
+      ptr = ptr.offset(1);
+    }
+    if device.is_null() {
+        eprintln!("Unrecognized radio '{}'.", ident_str);
+        exit(-1);
+    }
+
+    //TODO need to reset device static
+
+
   }
 }