| // Copyright 2020 The Pigweed Authors |
| // |
| // 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 |
| // |
| // https://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. |
| #pragma once |
| |
| #include "pw_checksum/ccitt_crc16.h" |
| #include "pw_kvs/checksum.h" |
| #include "pw_span/span.h" |
| |
| namespace pw::kvs { |
| |
| class ChecksumCrc16 final : public ChecksumAlgorithm { |
| public: |
| ChecksumCrc16() : ChecksumAlgorithm(as_bytes(span(&crc_, 1))) {} |
| |
| void Reset() override { crc_ = checksum::kCcittCrc16DefaultInitialValue; } |
| |
| void Update(span<const std::byte> data) override { |
| crc_ = checksum::CcittCrc16(data, crc_); |
| } |
| |
| private: |
| uint16_t crc_ = checksum::kCcittCrc16DefaultInitialValue; |
| }; |
| |
| } // namespace pw::kvs |