Merge pull request #5911 from deepikabhavnani/common_crc

CRC class implementation

Author: cmonr

drivers/MbedCRC.cpp

@@ -0,0 +1,115 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2018 ARM Limited
+ *
+ * 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
+ *
+ *     http://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 <stddef.h>
+#include "drivers/TableCRC.h"
+#include "drivers/MbedCRC.h"
+
+namespace mbed {
+/** \addtogroup drivers */
+/** @{*/
+
+/* Default values for different types of polynomials
+*/
+template <uint32_t polynomial, uint8_t width>
+MbedCRC<polynomial, width>::MbedCRC(uint32_t initial_xor, uint32_t final_xor, bool reflect_data, bool reflect_remainder):
+        _initial_value(initial_xor), _final_xor(final_xor), _reflect_data(reflect_data), _reflect_remainder(reflect_remainder), _crc_table(NULL)
+{
+    mbed_crc_ctor();
+}
+
+template<>
+MbedCRC<POLY_32BIT_ANSI, 32>::MbedCRC(uint32_t initial_xor, uint32_t final_xor, bool reflect_data, bool reflect_remainder):
+        _initial_value(initial_xor), _final_xor(final_xor), _reflect_data(reflect_data), _reflect_remainder(reflect_remainder),
+        _crc_table((uint32_t *)Table_CRC_32bit_ANSI)
+{
+    mbed_crc_ctor();
+}
+
+template<>
+MbedCRC<POLY_8BIT_CCITT, 8>::MbedCRC(uint32_t initial_xor, uint32_t final_xor, bool reflect_data, bool reflect_remainder):
+        _initial_value(initial_xor), _final_xor(final_xor), _reflect_data(reflect_data), _reflect_remainder(reflect_remainder),
+        _crc_table((uint32_t *)Table_CRC_8bit_CCITT)
+{
+    mbed_crc_ctor();
+}
+
+template<>
+MbedCRC<POLY_7BIT_SD, 7>::MbedCRC(uint32_t initial_xor, uint32_t final_xor, bool reflect_data, bool reflect_remainder):
+        _initial_value(initial_xor), _final_xor(final_xor), _reflect_data(reflect_data), _reflect_remainder(reflect_remainder),
+        _crc_table((uint32_t *)Table_CRC_7Bit_SD)
+{
+    mbed_crc_ctor();
+}
+
+template<>
+MbedCRC<POLY_16BIT_CCITT, 16>::MbedCRC(uint32_t initial_xor, uint32_t final_xor, bool reflect_data, bool reflect_remainder):
+        _initial_value(initial_xor), _final_xor(final_xor), _reflect_data(reflect_data), _reflect_remainder(reflect_remainder),
+        _crc_table((uint32_t *)Table_CRC_16bit_CCITT)
+{
+}
+
+template<>
+MbedCRC<POLY_16BIT_IBM, 16>::MbedCRC(uint32_t initial_xor, uint32_t final_xor, bool reflect_data, bool reflect_remainder):
+        _initial_value(initial_xor), _final_xor(final_xor), _reflect_data(reflect_data), _reflect_remainder(reflect_remainder),
+        _crc_table((uint32_t *)Table_CRC_16bit_IBM)
+{
+    mbed_crc_ctor();
+}
+
+template<>
+MbedCRC<POLY_32BIT_ANSI, 32>::MbedCRC():
+    _initial_value(~(0x0)), _final_xor(~(0x0)), _reflect_data(true), _reflect_remainder(true),
+    _crc_table((uint32_t *)Table_CRC_32bit_ANSI)
+{
+    mbed_crc_ctor();
+}
+
+template<>
+MbedCRC<POLY_16BIT_IBM, 16>::MbedCRC():
+    _initial_value(0), _final_xor(0), _reflect_data(true), _reflect_remainder(true),
+    _crc_table((uint32_t *)Table_CRC_16bit_IBM)
+{
+    mbed_crc_ctor();
+}
+
+template<>
+MbedCRC<POLY_16BIT_CCITT, 16>::MbedCRC():
+    _initial_value(~(0x0)), _final_xor(0), _reflect_data(false), _reflect_remainder(false),
+    _crc_table((uint32_t *)Table_CRC_16bit_CCITT)
+{
+    mbed_crc_ctor();
+}
+
+template<>
+MbedCRC<POLY_7BIT_SD, 7>::MbedCRC():
+    _initial_value(0), _final_xor(0), _reflect_data(false), _reflect_remainder(false),
+    _crc_table((uint32_t *)Table_CRC_7Bit_SD)
+{
+    mbed_crc_ctor();
+}
+
+template<>
+MbedCRC<POLY_8BIT_CCITT, 8>::MbedCRC():
+    _initial_value(0), _final_xor(0), _reflect_data(false), _reflect_remainder(false),
+    _crc_table((uint32_t *)Table_CRC_8bit_CCITT)
+{
+    mbed_crc_ctor();
+}
+
+/** @}*/
+} // namespace mbed
+