1 // Copyright 2015-2017 Espressif Systems (Shanghai) PTE LTD 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 #pragma once 15 #include <stdint.h> 16 #include <stddef.h> 17 18 #ifdef __cplusplus 19 extern "C" 20 { 21 #endif 22 23 24 /** 25 * @brief Return CRC7 of data, in the format used by SD protocol 26 * @param data array of data used to compute CRC 27 * @param size size of data in bytes 28 * @return CRC7 value 29 */ 30 uint8_t sdspi_crc7(const uint8_t *data, size_t size); 31 32 /** 33 * @brief Return CRC16 of data, in the format used by SD protocol 34 * @param data array of data used to compute CRC 35 * @param size size of data in bytes 36 * @return CRC16 value 37 */ 38 uint16_t sdspi_crc16(const uint8_t* data, size_t size); 39 40 41 #ifdef __cplusplus 42 } 43 #endif 44