Diff: Platforms/mbed/Uart.cpp

Revision:

0:f77ad7f72d04

Child:

3:f818ea5172ed

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Platforms/mbed/Uart.cpp	Mon Nov 06 14:39:18 2017 -0600
@@ -0,0 +1,106 @@
+/*******************************************************************************
+* 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 <MaximInterface/Utilities/Error.hpp>
+#include <Timer.h>
+#include "Uart.hpp"
+
+static const int timeout_ms = 10000;
+
+namespace MaximInterface {
+namespace mbed {
+
+error_code Uart::setBaud(int_least32_t baud) {
+  serial->baud(baud);
+  return error_code();
+}
+
+error_code Uart::sendBreak() {
+  serial->send_break();
+  return error_code();
+}
+
+error_code Uart::clearReadBuffer() {
+  while (serial->readable()) {
+    serial->getc();
+  }
+  return error_code();
+}
+
+error_code Uart::writeByte(uint_least8_t data) {
+  if (!serial->writeable()) {
+    ::mbed::Timer timer;
+    timer.start();
+    while (!serial->writeable()) {
+      if (timer.read_ms() >= timeout_ms) {
+        return make_error_code(HardwareError);
+      }
+    }
+  }
+  serial->putc(data);
+  return error_code();
+}
+
+error_code Uart::readByte(uint_least8_t & data) {
+  if (!serial->readable()) {
+    ::mbed::Timer timer;
+    timer.start();
+    while (!serial->readable()) {
+      if (timer.read_ms() >= timeout_ms) {
+        return make_error_code(TimeoutError);
+      }
+    }
+  }
+  data = serial->getc();
+  return error_code();
+}
+
+const error_category & Uart::errorCategory() {
+  static class : public error_category {
+  public:
+    virtual const char * name() const { return "mbed UART"; }
+
+    virtual std::string message(int condition) const {
+      switch (condition) {
+      case HardwareError:
+        return "Hardware Error";
+
+      default:
+        return defaultErrorMessage(condition);
+      }
+    }
+  } instance;
+  return instance;
+}
+
+} // namespace mbed
+} // namespace MaximInterface
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