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| <a name="boost_asio.reference.basic_serial_port.read_some.overload2"></a><a class="link" href="overload2.html" title="basic_serial_port::read_some (2 of 2 overloads)">basic_serial_port::read_some |
| (2 of 2 overloads)</a> |
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| <p> |
| Read some data from the serial port. |
| </p> |
| <pre class="programlisting"><span class="keyword">template</span><span class="special"><</span> |
| <span class="keyword">typename</span> <a class="link" href="../../MutableBufferSequence.html" title="Mutable buffer sequence requirements">MutableBufferSequence</a><span class="special">></span> |
| <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <span class="identifier">read_some</span><span class="special">(</span> |
| <span class="keyword">const</span> <span class="identifier">MutableBufferSequence</span> <span class="special">&</span> <span class="identifier">buffers</span><span class="special">,</span> |
| <span class="identifier">boost</span><span class="special">::</span><span class="identifier">system</span><span class="special">::</span><span class="identifier">error_code</span> <span class="special">&</span> <span class="identifier">ec</span><span class="special">);</span> |
| </pre> |
| <p> |
| This function is used to read data from the serial port. The function |
| call will block until one or more bytes of data has been read successfully, |
| or until an error occurs. |
| </p> |
| <a name="boost_asio.reference.basic_serial_port.read_some.overload2.parameters"></a><h6> |
| <a name="id986158"></a> |
| <a class="link" href="overload2.html#boost_asio.reference.basic_serial_port.read_some.overload2.parameters">Parameters</a> |
| </h6> |
| <div class="variablelist"> |
| <p class="title"><b></b></p> |
| <dl> |
| <dt><span class="term">buffers</span></dt> |
| <dd><p> |
| One or more buffers into which the data will be read. |
| </p></dd> |
| <dt><span class="term">ec</span></dt> |
| <dd><p> |
| Set to indicate what error occurred, if any. |
| </p></dd> |
| </dl> |
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| <a name="boost_asio.reference.basic_serial_port.read_some.overload2.return_value"></a><h6> |
| <a name="id986216"></a> |
| <a class="link" href="overload2.html#boost_asio.reference.basic_serial_port.read_some.overload2.return_value">Return |
| Value</a> |
| </h6> |
| <p> |
| The number of bytes read. Returns 0 if an error occurred. |
| </p> |
| <a name="boost_asio.reference.basic_serial_port.read_some.overload2.remarks"></a><h6> |
| <a name="id986244"></a> |
| <a class="link" href="overload2.html#boost_asio.reference.basic_serial_port.read_some.overload2.remarks">Remarks</a> |
| </h6> |
| <p> |
| The read_some operation may not read all of the requested number of bytes. |
| Consider using the <a class="link" href="../../read.html" title="read"><code class="computeroutput"><span class="identifier">read</span></code></a> function if you need to |
| ensure that the requested amount of data is read before the blocking |
| operation completes. |
| </p> |
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| <td align="right"><div class="copyright-footer">Copyright © 2003 - 2010 Christopher M. Kohlhoff<p> |
| Distributed under the Boost Software License, Version 1.0. (See accompanying |
| file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) |
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