NFC: application + rfal + driver.

lib/ST25RFAL002/include/rfal_crc.h

@@ -0,0 +1,75 @@
+
+/******************************************************************************
+  * \attention
+  *
+  * <h2><center>&copy; COPYRIGHT 2020 STMicroelectronics</center></h2>
+  *
+  * Licensed under ST MYLIBERTY SOFTWARE LICENSE AGREEMENT (the "License");
+  * You may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at:
+  *
+  *        www.st.com/myliberty
+  *
+  * 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,
+  * AND SPECIFICALLY DISCLAIMING THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+  *
+******************************************************************************/
+
+/*
+ *      PROJECT:   ST25R391x firmware
+ *      Revision:
+ *      LANGUAGE:  ISO C99
+ */
+
+/*! \file rfal_crc.h
+ *
+ *  \author Ulrich Herrmann
+ *
+ *  \brief CRC calculation module
+ *
+ */
+/*!
+ * 
+ */
+
+#ifndef RFAL_CRC_H_
+#define RFAL_CRC_H_
+
+/*
+******************************************************************************
+* INCLUDES
+******************************************************************************
+*/
+#include "platform.h"
+
+/*
+******************************************************************************
+* GLOBAL FUNCTION PROTOTYPES
+******************************************************************************
+*/
+/*! 
+ *****************************************************************************
+ *  \brief  Calculate CRC according to CCITT standard.
+ *
+ *  This function takes \a length bytes from \a buf and calculates the CRC
+ *  for this data. The result is returned.
+ *  \note This implementation calculates the CRC with LSB first, i.e. all
+ *  bytes are "read" from right to left.
+ *
+ *  \param[in] preloadValue : Initial value of CRC calculation.
+ *  \param[in] buf : buffer to calculate the CRC for.
+ *  \param[in] length : size of the buffer.
+ *
+ *  \return 16 bit long crc value.
+ *
+ *****************************************************************************
+ */
+extern uint16_t rfalCrcCalculateCcitt(uint16_t preloadValue, const uint8_t* buf, uint16_t length);
+
+#endif /* RFAL_CRC_H_ */
+