Diff: TARGET_MCU_NRF51822/sdk/source/libraries/crc16/crc16.h

Revision:

640:c90ae1400bf2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TARGET_MCU_NRF51822/sdk/source/libraries/crc16/crc16.h	Wed Sep 14 14:39:43 2016 +0100
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+/*
+ * Copyright (c) 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 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 other
+ *   contributors to this software may be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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 crc_compute CRC compute
+ * @{
+ * @ingroup hci_transport
+ *
+ * @brief    This module implements the CRC-16 calculation in the blocks.
+ */
+ 
+#ifndef CRC16_H__
+#define CRC16_H__
+
+#include <stdint.h>
+
+/**@brief Function for calculating CRC-16 in blocks.
+ *
+ * Feed each consecutive data block into this function, along with the current value of p_crc as 
+ * returned by the previous call of this function. The first call of this function should pass NULL 
+ * as the initial value of the crc in p_crc.
+ *
+ * @param[in] p_data The input data block for computation.
+ * @param[in] size   The size of the input data block in bytes.
+ * @param[in] p_crc  The previous calculated CRC-16 value or NULL if first call.  
+ *
+ * @return The updated CRC-16 value, based on the input supplied.
+ */
+uint16_t crc16_compute(const uint8_t * p_data, uint32_t size, const uint16_t * p_crc);
+
+#endif // CRC16_H__
+ 
+/** @} */