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diff --git a/fw/cdc-dials/Drivers/CMSIS/DSP/Source/FilteringFunctions/arm_fir_sparse_init_q7.c b/fw/cdc-dials/Drivers/CMSIS/DSP/Source/FilteringFunctions/arm_fir_sparse_init_q7.c
new file mode 100644
index 0000000..c2cb7b0
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+++ b/fw/cdc-dials/Drivers/CMSIS/DSP/Source/FilteringFunctions/arm_fir_sparse_init_q7.c
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+/* ----------------------------------------------------------------------
+ * Project:      CMSIS DSP Library
+ * Title:        arm_fir_sparse_init_q7.c
+ * Description:  Q7 sparse FIR filter initialization function
+ *
+ * $Date:        27. January 2017
+ * $Revision:    V.1.5.1
+ *
+ * Target Processor: Cortex-M cores
+ * -------------------------------------------------------------------- */
+/*
+ * Copyright (C) 2010-2017 ARM Limited or its affiliates. All rights reserved.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the License); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an AS IS BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "arm_math.h"
+
+/**
+ * @ingroup groupFilters
+ */
+
+/**
+ * @addtogroup FIR_Sparse
+ * @{
+ */
+
+/**
+ * @brief  Initialization function for the Q7 sparse FIR filter.
+ * @param[in,out] *S         points to an instance of the Q7 sparse FIR structure.
+ * @param[in]     numTaps    number of nonzero coefficients in the filter.
+ * @param[in]     *pCoeffs   points to the array of filter coefficients.
+ * @param[in]     *pState    points to the state buffer.
+ * @param[in]     *pTapDelay points to the array of offset times.
+ * @param[in]     maxDelay   maximum offset time supported.
+ * @param[in]     blockSize  number of samples that will be processed per block.
+ * @return none
+ *
+ * <b>Description:</b>
+ * \par
+ * <code>pCoeffs</code> holds the filter coefficients and has length <code>numTaps</code>.
+ * <code>pState</code> holds the filter's state variables and must be of length
+ * <code>maxDelay + blockSize</code>, where <code>maxDelay</code>
+ * is the maximum number of delay line values.
+ * <code>blockSize</code> is the
+ * number of samples processed by the <code>arm_fir_sparse_q7()</code> function.
+ */
+
+void arm_fir_sparse_init_q7(
+  arm_fir_sparse_instance_q7 * S,
+  uint16_t numTaps,
+  q7_t * pCoeffs,
+  q7_t * pState,
+  int32_t * pTapDelay,
+  uint16_t maxDelay,
+  uint32_t blockSize)
+{
+  /* Assign filter taps */
+  S->numTaps = numTaps;
+
+  /* Assign coefficient pointer */
+  S->pCoeffs = pCoeffs;
+
+  /* Assign TapDelay pointer */
+  S->pTapDelay = pTapDelay;
+
+  /* Assign MaxDelay */
+  S->maxDelay = maxDelay;
+
+  /* reset the stateIndex to 0 */
+  S->stateIndex = 0U;
+
+  /* Clear state buffer and size is always maxDelay + blockSize */
+  memset(pState, 0, (maxDelay + blockSize) * sizeof(q7_t));
+
+  /* Assign state pointer */
+  S->pState = pState;
+
+}
+
+/**
+ * @} end of FIR_Sparse group
+ */