| // 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_bytes/span.h" |
| #include "pw_status/status.h" |
| #include "pw_stream/stream.h" |
| |
| namespace pw::hdlc_lite { |
| |
| // Writes an HDLC information frame (I-frame) to the provided writer. The frame |
| // contains the following: |
| // |
| // - HDLC flag byte (0x7e) |
| // - Address |
| // - Control byte (fixed at 0; sequence numbers are not used currently). |
| // - Data (0 or more bytes) |
| // - Frame check sequence (CRC-32) |
| // - HDLC flag byte (0x7e) |
| // |
| Status WriteInformationFrame(uint8_t address, |
| ConstByteSpan data, |
| stream::Writer& writer); |
| |
| } // namespace pw::hdlc_lite |
