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diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/experimental_mpu/nrf_mpu.h b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/experimental_mpu/nrf_mpu.h
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+++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/experimental_mpu/nrf_mpu.h
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+/**
+ * Copyright (c) 2017 - 2018, Nordic Semiconductor ASA
+ * 
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ * 
+ * 2. Redistributions in binary form, except as embedded into a Nordic
+ *    Semiconductor ASA integrated circuit in a product or a software update for
+ *    such product, must reproduce the above copyright notice, this list of
+ *    conditions and the following disclaimer in the documentation and/or other
+ *    materials provided with the distribution.
+ * 
+ * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
+ *    contributors may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ * 
+ * 4. This software, with or without modification, must only be used with a
+ *    Nordic Semiconductor ASA integrated circuit.
+ * 
+ * 5. Any software provided in binary form under this license must not be reverse
+ *    engineered, decompiled, modified and/or disassembled.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+ * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 
+ */
+
+#ifndef __NRF_MPU_H
+#define __NRF_MPU_H
+
+/**
+* @defgroup nrf_mpu MPU (Memory Protection Unit) driver
+* @{
+* @ingroup app_common
+* @brief Functions for controlling MPU
+*/
+#include <stdint.h>
+#include <stdlib.h>
+#include "sdk_errors.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**@brief MPU region handle. */
+typedef uint8_t nrf_mpu_region_t;
+
+/**@brief Initialize MPU and driver.
+ *
+ * @return NRF_SUCCESS on success, otherwise error code.
+ */
+ret_code_t nrf_mpu_init(void);
+
+/**@brief Create new MPU region.
+ *
+ * @param[out]  p_region    Region handle.
+ * @param[in]   address     Region base address.
+ * @param[in]   size        Region size,
+ * @param[in]   attributes  Region attributes.
+ *
+ * @return NRF_SUCCESS on success, otherwise error code.
+ */
+ret_code_t nrf_mpu_region_create(nrf_mpu_region_t *p_region,
+                                 void *address,
+                                 size_t size,
+                                 uint32_t attributes);
+
+/**@brief Destroy MPU region.
+ *
+ * @param[in]  region    Region handle.
+ *
+ * @return NRF_SUCCESS on success, otherwise error code.
+ */
+ret_code_t nrf_mpu_region_destroy(nrf_mpu_region_t region);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __NRF_MPU_H */
+/** @} */