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diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/modules/nrfx/drivers/include/nrf_bitmask.h b/thirdparty/nRF5_SDK_15.0.0_a53641a/modules/nrfx/drivers/include/nrf_bitmask.h
new file mode 100644
index 0000000..8f2ac36
--- /dev/null
+++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/modules/nrfx/drivers/include/nrf_bitmask.h
@@ -0,0 +1,156 @@
+/**
+ * Copyright (c) 2016 - 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_BITMASK_H
+#define NRF_BITMASK_H
+
+#include <nrfx.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @defgroup nrf_bitmask Bitmask module
+ * @{
+ * @ingroup nrfx
+ * @brief   Bitmask managing module.
+ */
+
+#define BITMASK_BYTE_GET(abs_bit) ((abs_bit)/8)
+#define BITMASK_RELBIT_GET(abs_bit) ((abs_bit) & 0x00000007)
+
+/**
+ * Function for checking if bit in the multi-byte bit mask is set.
+ *
+ * @param bit    Bit index.
+ * @param p_mask A pointer to mask with bit fields.
+ *
+ * @return 0 if bit is not set, positive value otherwise.
+ */
+__STATIC_INLINE uint32_t nrf_bitmask_bit_is_set(uint32_t bit, void const * p_mask)
+{
+    uint8_t const * p_mask8 = (uint8_t const *)p_mask;
+    uint32_t byte_idx = BITMASK_BYTE_GET(bit);
+    bit = BITMASK_RELBIT_GET(bit);
+    return (1 << bit) & p_mask8[byte_idx];
+}
+
+/**
+ * Function for setting a bit in the multi-byte bit mask.
+ *
+ * @param bit    Bit index.
+ * @param p_mask A pointer to mask with bit fields.
+ */
+__STATIC_INLINE void nrf_bitmask_bit_set(uint32_t bit, void * p_mask)
+{
+    uint8_t * p_mask8 = (uint8_t *)p_mask;
+    uint32_t byte_idx = BITMASK_BYTE_GET(bit);
+    bit = BITMASK_RELBIT_GET(bit);
+    p_mask8[byte_idx] |= (1 << bit);
+}
+
+/**
+ * Function for clearing a bit in the multi-byte bit mask.
+ *
+ * @param bit    Bit index.
+ * @param p_mask A pointer to mask with bit fields.
+ */
+__STATIC_INLINE void nrf_bitmask_bit_clear(uint32_t bit, void * p_mask)
+{
+    uint8_t * p_mask8 = (uint8_t *)p_mask;
+    uint32_t byte_idx = BITMASK_BYTE_GET(bit);
+    bit = BITMASK_RELBIT_GET(bit);
+    p_mask8[byte_idx] &= ~(1 << bit);
+}
+
+/**
+ * Function for performing bitwise OR operation on two multi-byte bit masks.
+ *
+ * @param p_mask1    A pointer to the first bit mask.
+ * @param p_mask2    A pointer to the second bit mask.
+ * @param p_out_mask A pointer to the output bit mask.
+ * @param length     Length of output mask in bytes.
+ */
+__STATIC_INLINE void nrf_bitmask_masks_or(void const *   p_mask1,
+                                          void const *   p_mask2,
+                                          void *         p_out_mask,
+                                          uint32_t       length)
+{
+    uint8_t const * p_mask8_1 = (uint8_t const *)p_mask1;
+    uint8_t const * p_mask8_2 = (uint8_t const *)p_mask2;
+    uint8_t * p_mask8_out = (uint8_t *)p_out_mask;
+    uint32_t i;
+    for (i = 0; i < length; i++)
+    {
+        p_mask8_out[i] = p_mask8_1[i] | p_mask8_2[i];
+    }
+}
+
+/**
+ * Function for performing bitwise AND operation on two multi-byte bit masks.
+ *
+ * @param p_mask1    A pointer to the first bit mask.
+ * @param p_mask2    A pointer to the second bit mask.
+ * @param p_out_mask A pointer to the output bit mask.
+ * @param length     Length of output mask in bytes.
+ */
+__STATIC_INLINE void nrf_bitmask_masks_and(void const *   p_mask1,
+                                           void const *   p_mask2,
+                                           void *         p_out_mask,
+                                           uint32_t       length)
+{
+    uint8_t const * p_mask8_1 = (uint8_t const *)p_mask1;
+    uint8_t const * p_mask8_2 = (uint8_t const *)p_mask2;
+    uint8_t * p_mask8_out = (uint8_t *)p_out_mask;
+    uint32_t i;
+    for (i = 0; i < length; i++)
+    {
+        p_mask8_out[i] = p_mask8_1[i] & p_mask8_2[i];
+    }
+}
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // NRF_BITMASK_H