1 // Copyright 2020 The Pigweed Authors
3 // Licensed under the Apache License, Version 2.0 (the "License"); you may not
4 // use this file except in compliance with the License. You may obtain a copy of
7 // https://www.apache.org/licenses/LICENSE-2.0
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
11 // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
12 // License for the specific language governing permissions and limitations under
16 #include "pw_bytes/span.h"
17 #include "pw_status/status.h"
18 #include "pw_stream/stream.h"
20 namespace pw::hdlc_lite {
22 // Writes an HDLC information frame (I-frame) to the provided writer. The frame
23 // contains the following:
25 // - HDLC flag byte (0x7e)
27 // - Control byte (fixed at 0; sequence numbers are not used currently).
28 // - Data (0 or more bytes)
29 // - Frame check sequence (CRC-32)
30 // - HDLC flag byte (0x7e)
32 Status WriteInformationFrame(uint8_t address,
34 stream::Writer& writer);
36 } // namespace pw::hdlc_lite