| // Copyright 2021 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. |
| |
| #include <array> |
| #include <cstddef> |
| #include <cstdint> |
| #include <cstdio> |
| |
| #include "pw_assert/check.h" |
| #include "pw_hdlc/rpc_channel.h" |
| #include "pw_hdlc/rpc_packets.h" |
| #include "pw_log/log.h" |
| #include "pw_sync/mutex.h" |
| #include "pw_system/config.h" |
| #include "pw_system/io.h" |
| #include "pw_system/rpc_server.h" |
| |
| namespace pw::system { |
| namespace { |
| |
| constexpr size_t kMaxTransmissionUnit = PW_SYSTEM_MAX_TRANSMISSION_UNIT; |
| |
| hdlc::RpcChannelOutput hdlc_channel_output(GetWriter(), |
| PW_SYSTEM_DEFAULT_RPC_HDLC_ADDRESS, |
| "HDLC channel"); |
| rpc::Channel channels[] = { |
| rpc::Channel::Create<kDefaultRpcChannelId>(&hdlc_channel_output)}; |
| rpc::Server server(channels); |
| |
| // Declare a buffer for decoding incoming HDLC frames. |
| std::array<std::byte, kMaxTransmissionUnit> input_buffer; |
| hdlc::Decoder decoder(input_buffer); |
| |
| std::array<std::byte, 1> data; |
| |
| } // namespace |
| |
| rpc::Server& GetRpcServer() { return server; } |
| |
| class RpcDispatchThread final : public thread::ThreadCore { |
| public: |
| RpcDispatchThread() = default; |
| RpcDispatchThread(const RpcDispatchThread&) = delete; |
| RpcDispatchThread(RpcDispatchThread&&) = delete; |
| RpcDispatchThread& operator=(const RpcDispatchThread&) = delete; |
| RpcDispatchThread& operator=(RpcDispatchThread&&) = delete; |
| |
| void Run() override { |
| PW_LOG_INFO("Running RPC server"); |
| while (true) { |
| auto ret_val = GetReader().Read(data); |
| if (ret_val.ok()) { |
| for (std::byte byte : ret_val.value()) { |
| if (auto result = decoder.Process(byte); result.ok()) { |
| hdlc::Frame& frame = result.value(); |
| if (frame.address() == PW_SYSTEM_DEFAULT_RPC_HDLC_ADDRESS) { |
| server.ProcessPacket(frame.data(), hdlc_channel_output); |
| } |
| } |
| } |
| } |
| } |
| } |
| }; |
| |
| thread::ThreadCore& GetRpcDispatchThread() { |
| static RpcDispatchThread rpc_dispatch_thread; |
| return rpc_dispatch_thread; |
| } |
| |
| } // namespace pw::system |