Diff: Platforms/dotnet/Uart.cpp

Revision:

0:f77ad7f72d04

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Platforms/dotnet/Uart.cpp	Mon Nov 06 14:39:18 2017 -0600
@@ -0,0 +1,218 @@
+/*******************************************************************************
+* Copyright (C) 2017 Maxim Integrated Products, Inc., All Rights Reserved.
+*
+* Permission is hereby granted, free of charge, to any person obtaining a
+* copy of this software and associated documentation files (the "Software"),
+* to deal in the Software without restriction, including without limitation
+* the rights to use, copy, modify, merge, publish, distribute, sublicense,
+* and/or sell copies of the Software, and to permit persons to whom the
+* Software is furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
+* OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+* OTHER DEALINGS IN THE SOFTWARE.
+*
+* Except as contained in this notice, the name of Maxim Integrated
+* Products, Inc. shall not be used except as stated in the Maxim Integrated
+* Products, Inc. Branding Policy.
+*
+* The mere transfer of this software does not imply any licenses
+* of trade secrets, proprietary technology, copyrights, patents,
+* trademarks, maskwork rights, or any other form of intellectual
+* property whatsoever. Maxim Integrated Products, Inc. retains all
+* ownership rights.
+*******************************************************************************/
+
+#include <msclr/auto_gcroot.h>
+#include <msclr/marshal_cppstd.h>
+#include <MaximInterface/Utilities/Error.hpp>
+#include "ChangeSizeType.hpp"
+#include "Sleep.hpp"
+#include "Uart.hpp"
+
+using msclr::interop::marshal_as;
+using std::string;
+using namespace System;
+using System::IO::Ports::SerialPort;
+using System::Runtime::InteropServices::Marshal;
+
+namespace MaximInterface {
+namespace dotnet {
+
+template <typename Type, typename Input> static bool isType(Input in) {
+  return dynamic_cast<Type>(in) != nullptr;
+}
+
+template <typename Func>
+static error_code executeTryCatchOperation(Func tryOperation) {
+  return executeTryCatchOperation(tryOperation, [] {});
+}
+
+template <typename TryFunc, typename CatchFunc>
+static error_code executeTryCatchOperation(TryFunc tryOperation,
+                                           CatchFunc catchOperation) {
+  error_code result;
+  try {
+    tryOperation();
+  } catch (Exception ^ e) {
+    catchOperation();
+    if (isType<ArgumentException ^>(e)) {
+      result = make_error_code(Uart::ArgumentError);
+    } else if (isType<InvalidOperationException ^>(e)) {
+      result = make_error_code(Uart::InvalidOperationError);
+    } else if (isType<System::IO::IOException ^>(e)) {
+      result = make_error_code(Uart::IOError);
+    } else if (isType<UnauthorizedAccessException ^>(e)) {
+      result = make_error_code(Uart::UnauthorizedAccessError);
+    } else if (isType<TimeoutException ^>(e)) {
+      result = make_error_code(Uart::TimeoutError);
+    } else {
+      throw;
+    }
+  }
+  return result;
+}
+
+template <typename Func>
+static error_code executeIfConnected(const Uart & serial, Func operation) {
+  return serial.connected() ? operation()
+                            : make_error_code(Uart::NotConnectedError);
+}
+
+struct Uart::Data {
+  msclr::auto_gcroot<SerialPort ^> port;
+};
+
+Uart::Uart() : data(std::make_unique<Data>()) {}
+
+Uart::~Uart() = default;
+
+Uart::Uart(Uart &&) noexcept = default;
+
+Uart & Uart::operator=(Uart &&) noexcept = default;
+
+error_code Uart::connect(const string & portName) {
+  data->port = gcnew SerialPort;
+  return executeTryCatchOperation(
+      [this, &portName] {
+        data->port->PortName = marshal_as<String ^>(portName);
+        data->port->DtrEnable = true;
+        data->port->Open();
+      },
+      [this] { data->port.reset(); });
+}
+
+void Uart::disconnect() { data->port.reset(); }
+
+bool Uart::connected() const { return data->port.get() != nullptr; }
+
+string Uart::portName() const {
+  return connected() ? marshal_as<string>(data->port->PortName) : "";
+}
+
+error_code Uart::setBaud(int_least32_t baud) {
+  return executeIfConnected(*this, [this, baud] {
+    return executeTryCatchOperation(
+        [this, baud] { data->port->BaudRate = baud; });
+  });
+}
+
+error_code Uart::sendBreak() {
+  return executeIfConnected(*this, [this] {
+    return executeTryCatchOperation([this] {
+      data->port->BreakState = true;
+      sleep(1);
+      data->port->BreakState = false;
+    });
+  });
+}
+
+error_code Uart::clearReadBuffer() {
+  return executeIfConnected(*this, [this] {
+    return executeTryCatchOperation([this] { data->port->ReadExisting(); });
+  });
+}
+
+error_code Uart::writeByte(uint_least8_t data) { return writeBlock(&data, 1); }
+
+error_code Uart::writeBlock(const uint_least8_t * data, size_t dataLen) {
+  return executeIfConnected(*this, [this, data, dataLen] {
+    return executeTryCatchOperation([this, data, dataLen] {
+      changeSizeType<int>(
+          [this](const uint_least8_t * dataChunk, int dataChunkSize) {
+            auto dataManaged = gcnew array<uint_least8_t>(dataChunkSize);
+            Marshal::Copy(
+                static_cast<IntPtr>(const_cast<uint_least8_t *>(dataChunk)),
+                dataManaged, 0, dataChunkSize);
+            this->data->port->Write(dataManaged, 0, dataChunkSize);
+          },
+          data, dataLen);
+    });
+  });
+}
+
+error_code Uart::readByte(uint_least8_t & data) {
+  return executeIfConnected(*this, [this, &data] {
+    return executeTryCatchOperation(
+        [this, &data] { data = this->data->port->ReadByte(); });
+  });
+}
+
+error_code Uart::readBlock(uint_least8_t * data, size_t dataLen) {
+  return executeIfConnected(*this, [this, data, dataLen] {
+    return executeTryCatchOperation([this, data, dataLen] {
+      changeSizeType<int>(
+          [this](uint_least8_t * dataChunk, int dataChunkSize) {
+            auto dataManaged = gcnew array<uint_least8_t>(dataChunkSize);
+            int bytesRead = 0;
+            do {
+              bytesRead += this->data->port->Read(dataManaged, bytesRead,
+                                                  dataChunkSize - bytesRead);
+            } while (bytesRead < dataChunkSize);
+            Marshal::Copy(dataManaged, 0, static_cast<IntPtr>(dataChunk),
+                          dataChunkSize);
+          },
+          data, dataLen);
+    });
+  });
+}
+
+const error_category & Uart::errorCategory() {
+  static class : public error_category {
+  public:
+    virtual const char * name() const { return "dotnet UART"; }
+
+    virtual string message(int condition) const {
+      switch (condition) {
+      case NotConnectedError:
+        return "Not Connected Error";
+
+      case ArgumentError:
+        return "Argument Error";
+
+      case InvalidOperationError:
+        return "Invalid Operation Error";
+
+      case IOError:
+        return "IO Error";
+
+      case UnauthorizedAccessError:
+        return "Unauthorized Access Error";
+
+      default:
+        return defaultErrorMessage(condition);
+      }
+    }
+  } instance;
+  return instance;
+}
+
+} // namespace dotnet
+} // namespace MaximInterface
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