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< class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><?xml:namespace prefix = v ns = "urn:schemas-microsoft-com:vml" /><v:shapetype id=_x0000_t75 stroked="f" filled="f" path="m@4@5l@4@11@9@11@9@5xe" o:preferrelative="t" o:spt="75" coordsize="21600,21600"><v:stroke joinstyle="miter"></v:stroke><v:formulas><v:f eqn="if lineDrawn pixelLineWidth 0"></v:f><v:f eqn="sum @0 1 0"></v:f><v:f eqn="sum 0 0 @1"></v:f><v:f eqn="prod @2 1 2"></v:f><v:f eqn="prod @3 21600 pixelWidth"></v:f><v:f eqn="prod @3 21600 pixelHeight"></v:f><v:f eqn="sum @0 0 1"></v:f><v:f eqn="prod @6 1 2"></v:f><v:f eqn="prod @7 21600 pixelWidth"></v:f><v:f eqn="sum @8 21600 0"></v:f><v:f eqn="prod @7 21600 pixelHeight"></v:f><v:f eqn="sum @10 21600 0"></v:f></v:formulas><v:path o:connecttype="rect" gradientshapeok="t" o:extrusionok="f"></v:path><?xml:namespace prefix = o ns = "urn:schemas-microsoft-comffice:office" /><o:lock aspectratio="t" v:ext="edit"></o:lock></v:shapetype><v:shape id=_x0000_i1025 style="WIDTH: 400.5pt; HEIGHT: 312.75pt" type="#_x0000_t75"><v:imagedata cropright="25718f" cropbottom="14676f" croptop="1022f" o:title="" src="file:///C:\DOCUME~1\MINSTA~1.HFU\LOCALS~1\Temp\msohtml1\01\clip_image001.png"></P><DIV style="OVERFLOW: auto; WIDTH: 100%">进入中段就出不来,我用的是输入捕捉行同步,中断标志位始终为1,向TFLG1_C1F写1,也清不了零,初始化将TSCR1_TFFCA=1,自动清零也清不了,请哪位能指点一下在下? </DIV><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"></v:imagedata></v:shape></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT size=3>void vECTInit(void)</FONT></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT size=3>{</FONT></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT size=3><SPAN lang=EN-US><SPAN style="mso-spacerun: yes"> </SPAN>TIOS =0x00;<SPAN style="mso-spacerun: yes"> </SPAN>//</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">设为输入捕捉</SPAN></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT size=3><SPAN style="mso-spacerun: yes"> </SPAN>TSCR1=0X80; </FONT></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT size=3><SPAN lang=EN-US><SPAN style="mso-spacerun: yes"> </SPAN>TSCR2=0x83;<SPAN style="mso-spacerun: yes"> </SPAN>//</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">允许定时器溢出中断,定时器时钟</SPAN><?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" /><st1:chmetcnv UnitName="m" SourceValue="32" HasSpace="False" Negative="False" NumberType="1" TCSC="0"><SPAN lang=EN-US>32M</SPAN></st1:chmetcnv><SPAN lang=EN-US>/(2^3)=</SPAN><st1:chmetcnv UnitName="m" SourceValue="4" HasSpace="False" Negative="False" NumberType="1" TCSC="0"><SPAN lang=EN-US>4M</SPAN></st1:chmetcnv></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT size=3><SPAN lang=EN-US><SPAN style="mso-spacerun: yes"> </SPAN>TCTL4=0xAA;<SPAN style="mso-spacerun: yes"> </SPAN>//</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">触发电平</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'">下降沿</SPAN></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT size=3><SPAN lang=EN-US><SPAN style="mso-spacerun: yes"> </SPAN>TIE<SPAN style="mso-spacerun: yes"> </SPAN>=0x07;<SPAN style="mso-spacerun: yes"> </SPAN>//开中断</SPAN></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT size=3><SPAN style="mso-spacerun: yes"> </SPAN>TFLG1=0xFF;</FONT></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT size=3><SPAN lang=EN-US><SPAN style="mso-spacerun: yes"> </SPAN>//</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'">清除中断标志</SPAN></FONT></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT size=3><SPAN style="mso-spacerun: yes"> </SPAN></FONT></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US><FONT size=3>} TSCR1_TFFCA=1;<SPAN style="mso-spacerun: yes"> </SPAN><SPAN style="mso-tab-count: 1"> </SPAN><SPAN style="mso-spacerun: yes"> </SPAN>// if set, TFLG1 can be cleared auto, manual clear is useless<SPAN style="mso-spacerun: yes"> </SPAN></FONT></SPAN></P> |
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