Diff: Platforms/Qt/SerialPort.cpp

Revision:

3:f818ea5172ed

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Platforms/Qt/SerialPort.cpp	Thu Jan 11 13:50:39 2018 -0600
@@ -0,0 +1,166 @@
+/*******************************************************************************
+* 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 <QSerialPortInfo>
+#include <MaximInterface/Utilities/Error.hpp>
+#include "SerialPort.hpp"
+#include "Sleep.hpp"
+
+using std::string;
+
+namespace MaximInterface {
+namespace Qt {
+
+static_assert(QSerialPort::NoError == 0, "Remapping required for error_code.");
+
+error_code SerialPort::connect(const string & portName) {
+  port.setPort(QSerialPortInfo(QString::fromStdString(portName)));
+  auto result = port.open(QSerialPort::ReadWrite)
+                    ? error_code()
+                    : make_error_code(port.error());
+  if (result) {
+    return result;
+  }
+  result = port.setDataTerminalReady(true) ? error_code()
+                                           : make_error_code(port.error());
+  if (result) {
+    port.close();
+  }
+  return result;
+}
+
+error_code SerialPort::disconnect() {
+  port.close();
+  return error_code();
+}
+
+bool SerialPort::connected() const { return port.isOpen(); }
+
+string SerialPort::portName() const { return port.portName().toStdString(); }
+
+error_code SerialPort::setBaudRate(int_least32_t baudRate) {
+  return port.setBaudRate(baudRate) ? error_code()
+                                    : make_error_code(port.error());
+}
+
+error_code SerialPort::sendBreak() {
+  auto result =
+      port.setBreakEnabled(true) ? error_code() : make_error_code(port.error());
+  if (!result) {
+    sleep(1);
+    result = port.setBreakEnabled(false) ? error_code()
+                                         : make_error_code(port.error());
+  }
+  return result;
+}
+
+error_code SerialPort::clearReadBuffer() {
+  port.readAll();
+  return error_code();
+}
+
+error_code SerialPort::writeByte(uint_least8_t data) {
+  auto result =
+      port.putChar(data) ? error_code() : make_error_code(port.error());
+  if (!result) {
+    result = port.waitForBytesWritten(1000) ? error_code()
+                                            : make_error_code(port.error());
+  }
+  return result;
+}
+
+error_code SerialPort::readByte(uint_least8_t & data) {
+  if (port.atEnd()) {
+    const auto result = port.waitForReadyRead(1000)
+                            ? error_code()
+                            : make_error_code(port.error());
+    if (result) {
+      return result;
+    }
+  }
+  return port.getChar(reinterpret_cast<char *>(&data))
+             ? error_code()
+             : make_error_code(port.error());
+}
+
+const error_category & SerialPort::errorCategory() {
+  static class : public error_category {
+  public:
+    virtual const char * name() const override { return "Qt SerialPort"; }
+
+    virtual string message(int condition) const override {
+      switch (condition) {
+      case QSerialPort::DeviceNotFoundError:
+        return "Device Not Found";
+
+      case QSerialPort::PermissionError:
+        return "Permission Error";
+
+      case QSerialPort::OpenError:
+        return "Open Error";
+
+      case QSerialPort::NotOpenError:
+        return "Not Open Error";
+
+      case QSerialPort::WriteError:
+        return "Write Error";
+
+      case QSerialPort::ReadError:
+        return "Read Error";
+
+      case QSerialPort::ResourceError:
+        return "Resource Error";
+
+      case QSerialPort::UnsupportedOperationError:
+        return "Unsupported Operation Error";
+
+      case QSerialPort::TimeoutError:
+        return "Timeout Error";
+
+      default:
+        return defaultErrorMessage(condition);
+      }
+    }
+
+    // Make QSerialPort::TimeoutError equivalent to Uart::TimeoutError.
+    virtual bool equivalent(int code,
+                            const error_condition & condition) const override {
+      return (code == QSerialPort::TimeoutError)
+                 ? (condition == make_error_condition(Uart::TimeoutError))
+                 : error_category::equivalent(code, condition);
+    }
+  } instance;
+  return instance;
+}
+
+} // namespace Qt
+} // namespace MaximInterface
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