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diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/util/app_error.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/util/app_error.c
new file mode 100644
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+++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/libraries/util/app_error.c
@@ -0,0 +1,125 @@
+/**
+ * Copyright (c) 2014 - 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.
+ * 
+ */
+/** @file
+ *
+ * @defgroup app_error Common application error handler
+ * @{
+ * @ingroup app_common
+ *
+ * @brief Common application error handler.
+ */
+
+#include "nrf.h"
+#include <stdio.h>
+#include "app_error.h"
+#include "nordic_common.h"
+#include "sdk_errors.h"
+
+/**@brief Function for error handling, which is called when an error has occurred.
+ *
+ * @warning This handler is an example only and does not fit a final product. You need to analyze
+ *          how your product is supposed to react in case of error.
+ *
+ * @param[in] error_code  Error code supplied to the handler.
+ * @param[in] line_num    Line number where the handler is called.
+ * @param[in] p_file_name Pointer to the file name.
+ */
+void app_error_handler_bare(ret_code_t error_code)
+{
+    error_info_t error_info =
+    {
+        .line_num    = 0,
+        .p_file_name = NULL,
+        .err_code    = error_code,
+    };
+
+    app_error_fault_handler(NRF_FAULT_ID_SDK_ERROR, 0, (uint32_t)(&error_info));
+
+    UNUSED_VARIABLE(error_info);
+}
+
+void app_error_save_and_stop(uint32_t id, uint32_t pc, uint32_t info)
+{
+    /* static error variables - in order to prevent removal by optimizers */
+    static volatile struct
+    {
+        uint32_t        fault_id;
+        uint32_t        pc;
+        uint32_t        error_info;
+        assert_info_t * p_assert_info;
+        error_info_t  * p_error_info;
+        ret_code_t      err_code;
+        uint32_t        line_num;
+        const uint8_t * p_file_name;
+    } m_error_data = {0};
+
+    // The following variable helps Keil keep the call stack visible, in addition, it can be set to
+    // 0 in the debugger to continue executing code after the error check.
+    volatile bool loop = true;
+    UNUSED_VARIABLE(loop);
+
+    m_error_data.fault_id   = id;
+    m_error_data.pc         = pc;
+    m_error_data.error_info = info;
+
+    switch (id)
+    {
+        case NRF_FAULT_ID_SDK_ASSERT:
+            m_error_data.p_assert_info = (assert_info_t *)info;
+            m_error_data.line_num      = m_error_data.p_assert_info->line_num;
+            m_error_data.p_file_name   = m_error_data.p_assert_info->p_file_name;
+            break;
+
+        case NRF_FAULT_ID_SDK_ERROR:
+            m_error_data.p_error_info = (error_info_t *)info;
+            m_error_data.err_code     = m_error_data.p_error_info->err_code;
+            m_error_data.line_num     = m_error_data.p_error_info->line_num;
+            m_error_data.p_file_name  = m_error_data.p_error_info->p_file_name;
+            break;
+    }
+
+    UNUSED_VARIABLE(m_error_data);
+
+    // If printing is disrupted, remove the irq calls, or set the loop variable to 0 in the debugger.
+    __disable_irq();
+    while (loop);
+
+    __enable_irq();
+}