1 /******************************************************************************
2  *
3  *  Copyright (C) 2018 ST Microelectronics S.A.
4  *
5  *  Licensed under the Apache License, Version 2.0 (the "License");
6  *  you may not use this file except in compliance with the License.
7  *  You may obtain a copy of the License at:
8  *
9  *  http://www.apache.org/licenses/LICENSE-2.0
10  *
11  *  Unless required by applicable law or agreed to in writing, software
12  *  distributed under the License is distributed on an "AS IS" BASIS,
13  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  *  See the License for the specific language governing permissions and
15  *  limitations under the License.
16  *
17  *
18  ******************************************************************************/
19 #ifndef ISO13239CRC_H_
20 #define ISO13239CRC_H_
21 
22 //************************************ Defines *********************************
23 #define CRC_PRESET 0xFFFF
24 #define CRC_POLYNOMIAL 0x8408
25 
26 #include <stdint.h>
27 
28 //************************************ Structs *********************************
29 
30 //************************************ Functions *******************************
31 
32 /**
33  * Computes the 16-bit CRC of the specified function.
34  *
35  * @param data The data to compute the CRC over.
36  * @param len The length of the data.
37  *
38  * @return The CRC of the data. -1 if something went wrong.
39  */
40 uint16_t computeCrc(uint8_t *data, int len);
41 
42 #endif /* ISO13239CRC_H_ */
43