Move crc16.[ch] to shared

shared/crc16.h

@@ -0,0 +1,25 @@
+#ifndef __CRC16_H__
+#define __CRC16_H__
+
+#include <stdint.h>
+
+typedef struct Crc16Data {
+    uint16_t currentCrc;
+} crc16_data_t;
+
+//! @brief Initializes the parameters of the crc function, must be called first.
+//! @param crc16Config Instantiation of the data structure of type crc16_data_t.
+void crc16_init(crc16_data_t *crc16Config);
+
+//! @brief A "running" crc calculator that updates the crc value after each call.
+//! @param crc16Config Instantiation of the data structure of type crc16_data_t.
+//! @param src Pointer to the source buffer of data.
+//! @param lengthInBytes The length, given in bytes (not words or long-words).
+void crc16_update(crc16_data_t *crc16Config, const uint8_t *src, uint32_t lengthInBytes);
+
+//! @brief Calculates the final crc value, padding with zeros if necessary, must be called last.
+//! @param crc16Config Instantiation of the data structure of type crc16_data_t.
+//! @param hash Pointer to the value returned for the final calculated crc value.
+void crc16_finalize(crc16_data_t *crc16Config, uint16_t *hash);
+
+#endif