📄 windowsce_net 420串口驱动分析(3)--jesse.htm
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lang=EN-US>)</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。当提交中断处理发送后待到</SPAN><SPAN
lang=EN-US>pSerialHead->hTransmitEvent</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">被设置或是异常或超时后就结束了发送流程，在这部分的最后。与</SPAN><SPAN
lang=EN-US>COM_Read</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">类似需要处理一些异常情况，当然如果使用了硬件流控制还需要在这里清除掉发送请求信号，当这些状态处理完成以后发送</SPAN><SPAN
lang=EN-US>EV_TXEMPTY</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">事件通告所有</SPAN><SPAN
lang=EN-US>open</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的句柄发送结束就完成了该部分的流程。</SPAN>
<BR><BR><B style="mso-bidi-font-weight: normal"><SPAN
lang=EN-US>COM_PowerUp/ COM_PowerDown<O:P></O:P></SPAN></B>
<BR><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">这两个函数的调用都由</SPAN><SPAN
lang=EN-US>CE</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">的电源事件来引发，</SPAN><SPAN
lang=EN-US>MDD</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">并没有对这两个函数进行处理，仅仅是将其传递给</SPAN><SPAN
lang=EN-US>PDD</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">。</SPAN>
<BR><BR><B style="mso-bidi-font-weight: normal"><SPAN
lang=EN-US>COM_IOControl<O:P></O:P></SPAN></B> <BR><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">该函数用于实现向设备发送命令的功能。由于代码本身没有什么流程或逻辑性可言，全都是单独的实现，下面就用列表的方式大致的说一下这些命令字和其实现。</SPAN></P>
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<TBODY>
<TR
style="HEIGHT: 7.5pt; mso-yfti-irow: 0; mso-yfti-firstrow: yes">
<TD
style="BORDER-RIGHT: white 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: white 1pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: white 1pt solid; WIDTH: 195.4pt; COLOR: #ffffff; PADDING-TOP: 0cm; BORDER-BOTTOM: white 1pt solid; HEIGHT: 7.5pt; mso-border-alt: solid white .5pt"
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<P class=MsoNormal
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lang=EN-US>Command</SPAN> </P></TD>
<TD
style="BORDER-RIGHT: white 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: white 1pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: medium none; WIDTH: 247.6pt; COLOR: #ffffff; PADDING-TOP: 0cm; BORDER-BOTTOM: white 1pt solid; HEIGHT: 7.5pt; mso-border-alt: solid white .5pt; mso-border-left-alt: solid white .5pt"
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<P class=MsoNormal
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lang=EN-US>Note</SPAN> </P></TD></TR>
<TR style="HEIGHT: 3.5pt; mso-yfti-irow: 1">
<TD
style="BORDER-RIGHT: white 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: white 1pt solid; WIDTH: 195.4pt; COLOR: #ffffff; PADDING-TOP: 0cm; BORDER-BOTTOM: white 1pt solid; HEIGHT: 3.5pt; mso-border-alt: solid white .5pt; mso-border-top-alt: solid white .5pt"
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<P class=MsoNormal
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lang=EN-US>IOCTL_PSL_NOTIFY</SPAN> </P></TD>
<TD
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<P class=MsoNormal
style="TEXT-JUSTIFY: inter-ideograph; MARGIN: 0cm 22.2pt 0pt 0cm; TEXT-ALIGN: justify; mso-element: frame; mso-element-wrap: around; mso-element-anchor-horizontal: margin; mso-element-top: -2.05pt; mso-height-rule: exactly; mso-element-anchor-vertical: paragraph; mso-element-frame-hspace: 9.0pt"><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">在调用驱动的进程退出时产生，并不是串行驱动专有的</SPAN><SPAN
lang=EN-US>IO</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">命令。这里会调用</SPAN>
<SPAN lang=EN-US>ProcessExiting</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">函数进行处理。这个函数的内容放到后面来看。</SPAN>
</P></TD></TR>
<TR style="HEIGHT: 11.25pt; mso-yfti-irow: 2">
<TD
style="BORDER-RIGHT: white 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: white 1pt solid; WIDTH: 195.4pt; COLOR: #ffffff; PADDING-TOP: 0cm; BORDER-BOTTOM: white 1pt solid; HEIGHT: 11.25pt; mso-border-alt: solid white .5pt; mso-border-top-alt: solid white .5pt"
vAlign=top width=261>
<P class=MsoNormal
style="MARGIN: 0cm 4.6pt 0pt 0cm; mso-element: frame; mso-element-wrap: around; mso-element-anchor-horizontal: margin; mso-element-top: -2.05pt; mso-height-rule: exactly; mso-element-anchor-vertical: paragraph; mso-element-frame-hspace: 9.0pt"><SPAN
lang=EN-US>IOCTL_SERIAL_SET_BREAK_ON </SPAN></P></TD>
<TD
style="BORDER-RIGHT: white 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: medium none; WIDTH: 247.6pt; COLOR: #ffffff; PADDING-TOP: 0cm; BORDER-BOTTOM: white 1pt solid; HEIGHT: 11.25pt; mso-border-alt: solid white .5pt; mso-border-left-alt: solid white .5pt; mso-border-top-alt: solid white .5pt"
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<P class=MsoNormal
style="MARGIN: 0cm 22.2pt 0pt 0cm; mso-element: frame; mso-element-wrap: around; mso-element-anchor-horizontal: margin; mso-element-top: -2.05pt; mso-height-rule: exactly; mso-element-anchor-vertical: paragraph; mso-element-frame-hspace: 9.0pt"><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">中断</SPAN><SPAN
lang=EN-US>(</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">暂停</SPAN><SPAN
lang=EN-US>)serial</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">当前的发送或是接收，具体实现在</SPAN><SPAN
lang=EN-US>PDD</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">中</SPAN>
</P></TD></TR>
<TR style="HEIGHT: 11.25pt; mso-yfti-irow: 3">
<TD
style="BORDER-RIGHT: white 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: white 1pt solid; WIDTH: 195.4pt; COLOR: #ffffff; PADDING-TOP: 0cm; BORDER-BOTTOM: white 1pt solid; HEIGHT: 11.25pt; mso-border-alt: solid white .5pt; mso-border-top-alt: solid white .5pt"
vAlign=top width=261>
<P class=MsoNormal
style="MARGIN: 0cm 4.6pt 0pt 0cm; mso-element: frame; mso-element-wrap: around; mso-element-anchor-horizontal: margin; mso-element-top: -2.05pt; mso-height-rule: exactly; mso-element-anchor-vertical: paragraph; mso-element-frame-hspace: 9.0pt"><SPAN
lang=EN-US>IOCTL_SERIAL_SET_BREAK_OFF </SPAN></P></TD>
<TD
style="BORDER-RIGHT: white 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: medium none; WIDTH: 247.6pt; COLOR: #ffffff; PADDING-TOP: 0cm; BORDER-BOTTOM: white 1pt solid; HEIGHT: 11.25pt; mso-border-alt: solid white .5pt; mso-border-left-alt: solid white .5pt; mso-border-top-alt: solid white .5pt"
vAlign=top width=330>
<P class=MsoNormal
style="MARGIN: 0cm 22.2pt 0pt 0cm; mso-element: frame; mso-element-wrap: around; mso-element-anchor-horizontal: margin; mso-element-top: -2.05pt; mso-height-rule: exactly; mso-element-anchor-vertical: paragraph; mso-element-frame-hspace: 9.0pt"><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">从中断（暂停）状态恢复，具体实现在</SPAN><SPAN
lang=EN-US>PDD</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">中</SPAN>
</P></TD></TR>
<TR style="HEIGHT: 10.5pt; mso-yfti-irow: 4">
<TD
style="BORDER-RIGHT: white 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: white 1pt solid; WIDTH: 195.4pt; COLOR: #ffffff; PADDING-TOP: 0cm; BORDER-BOTTOM: white 1pt solid; HEIGHT: 10.5pt; mso-border-alt: solid white .5pt; mso-border-top-alt: solid white .5pt"
vAlign=top width=261>
<P class=MsoNormal
style="MARGIN: 0cm 4.6pt 0pt 0cm; mso-element: frame; mso-element-wrap: around; mso-element-anchor-horizontal: margin; mso-element-top: -2.05pt; mso-height-rule: exactly; mso-element-anchor-vertical: paragraph; mso-element-frame-hspace: 9.0pt"><SPAN
lang=EN-US>IOCTL_SERIAL_SET_DTR</SPAN> </P></TD>
<TD
style="BORDER-RIGHT: white 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: medium none; WIDTH: 247.6pt; COLOR: #ffffff; PADDING-TOP: 0cm; BORDER-BOTTOM: white 1pt solid; HEIGHT: 10.5pt; mso-border-alt: solid white .5pt; mso-border-left-alt: solid white .5pt; mso-border-top-alt: solid white .5pt"
vAlign=top width=330>
<P class=MsoNormal
style="MARGIN: 0cm 22.2pt 0pt 0cm; mso-element: frame; mso-element-wrap: around; mso-element-anchor-horizontal: margin; mso-element-top: -2.05pt; mso-height-rule: exactly; mso-element-anchor-vertical: paragraph; mso-element-frame-hspace: 9.0pt"><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">将</SPAN><SPAN
lang=EN-US>DTR</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">引线拉高。</SPAN><SPAN
lang=EN-US>(</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">直接调用</SPAN><SPAN
lang=EN-US>PDD</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">实现</SPAN><SPAN
lang=EN-US>)</SPAN> </P></TD></TR>
<TR style="HEIGHT: 6.75pt; mso-yfti-irow: 5">
<TD
style="BORDER-RIGHT: white 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: white 1pt solid; WIDTH: 195.4pt; COLOR: #ffffff; PADDING-TOP: 0cm; BORDER-BOTTOM: white 1pt solid; HEIGHT: 6.75pt; mso-border-alt: solid white .5pt; mso-border-top-alt: solid white .5pt"
vAlign=top width=261>
<P class=MsoNormal
style="MARGIN: 0cm 4.6pt 0pt 0cm; mso-element: frame; mso-element-wrap: around; mso-element-anchor-horizontal: margin; mso-element-top: -2.05pt; mso-height-rule: exactly; mso-element-anchor-vertical: paragraph; mso-element-frame-hspace: 9.0pt"><SPAN
lang=EN-US>IOCTL_SERIAL_CLR_DTR</SPAN> </P></TD>
<TD
style="BORDER-RIGHT: white 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: medium none; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: medium none; WIDTH: 247.6pt; COLOR: #ffffff; PADDING-TOP: 0cm; BORDER-BOTTOM: white 1pt solid; HEIGHT: 6.75pt; mso-border-alt: solid white .5pt; mso-border-left-alt: solid white .5pt; mso-border-top-alt: solid white .5pt"
vAlign=top width=330>
<P class=MsoNormal
style="MARGIN: 0cm 22.2pt 0pt 0cm; mso-element: frame; mso-element-wrap: around; mso-element-anchor-horizontal: margin; mso-element-top: -2.05pt; mso-height-rule: exactly; mso-element-anchor-vertical: paragraph; mso-element-frame-hspace: 9.0pt"><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">将</SPAN><SPAN
lang=EN-US>DTR</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">引线拉低。</SPAN><SPAN
lang=EN-US>(</SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">直接调用</SPAN><SPAN
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