1 // Copyright 2024 The Pigweed Authors 2 // 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 5 // the License at 6 // 7 // https://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, 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 13 // the License. 14 15 #pragma once 16 17 #include "pw_stream/stream.h" 18 #include "pw_uart/uart.h" 19 20 namespace pw::uart { 21 22 /// UartStream implements the pw::stream::NonSeekableReaderWriter 23 /// interface on top of a Uart device. 24 class UartStream final : public stream::NonSeekableReaderWriter { 25 public: 26 /// Constructs a UartStream for a Uart device. UartStream(Uart & uart)27 UartStream(Uart& uart) : uart_(uart) {} 28 29 private: 30 Uart& uart_; 31 32 // NonSeekableReaderWriter impl. DoRead(ByteSpan destination)33 StatusWithSize DoRead(ByteSpan destination) override { 34 return uart_.ReadAtLeast(destination, 1); 35 } 36 DoWrite(ConstByteSpan data)37 Status DoWrite(ConstByteSpan data) override { return uart_.Write(data); } 38 }; 39 40 } // namespace pw::uart 41