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<a name="1204413"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">8 Message handling</font>
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<a name="1204414"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">A message queue provides a buffered communication method for tasks. Message queues also provide a way to communicate without copying data, which can save time. Message queues are, however, subject to the following restriction.</font>
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<a name="1204415"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Message queues may only be used from interrupt handlers if the timeout versions of the message handling functions are used and a timeout period of <font size=2 face=Courier><strong>TIMEOUT_IMMEDIATE</strong></font> is used; see <a href="mess4.htm#1204575"><font color="#0000ff" face="Verdana, Arial, Helvetica, sans-serif"><i>Section⌨️ 快捷键说明
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