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diff --git a/circuitpython/devices/ble_hci/common-hal/_bleio/UUID.h b/circuitpython/devices/ble_hci/common-hal/_bleio/UUID.h
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+++ b/circuitpython/devices/ble_hci/common-hal/_bleio/UUID.h
@@ -0,0 +1,58 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2019 Dan Halbert for Adafruit Industries
+ * Copyright (c) 2018 Artur Pacholec
+ * Copyright (c) 2016 Glenn Ruben Bakke
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef MICROPY_INCLUDED_BLE_HCI_COMMON_HAL_UUID_H
+#define MICROPY_INCLUDED_BLE_HCI_COMMON_HAL_UUID_H
+
+#include "py/obj.h"
+
+// Types returned by attribute table lookups. These are UUIDs.
+typedef enum {
+    BLE_UUID_UNKNOWN               = 0x0000,
+    BLE_UUID_SERVICE_PRIMARY       = 0x2800,
+    BLE_UUID_SERVICE_SECONDARY     = 0x2801,
+    BLE_UUID_SERVICE_INCLUDE       = 0x2802,// not yet implemented by us
+    BLE_UUID_CHARACTERISTIC        = 0x2803,
+    BLE_UUID_CHAR_EXTENDED_PROPS   = 0x2900,// not yet implemented by us
+    BLE_UUID_CHAR_USER_DESC        = 0x2901,// not yet implemented by us
+    BLE_UUID_CCCD                  = 0x2902,
+    BLE_UUID_SCCD                  = 0x2903,// not yet implemented by us
+    BLE_UUID_CHAR_PRESENTATION_FMT = 0x2904, // not yet implemented by us
+    BLE_UUID_CHAR_AGGREGATE_FMT    = 0x2905,// not yet implemented by us
+} ble_standard_uuid;
+
+typedef struct {
+    mp_obj_base_t base;
+    uint8_t size;
+    uint16_t uuid16;
+    uint8_t uuid128[16];
+} bleio_uuid_obj_t;
+
+uint16_t bleio_uuid_get_uuid16_or_unknown(bleio_uuid_obj_t *uuid);
+
+#endif // MICROPY_INCLUDED_BLE_HCI_COMMON_HAL_UUID_H