求助,奇怪的死机

wangyu409

< class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT size=3><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">紧急求援</SPAN><SPAN lang=EN-US>,</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">遇见一个很奇怪的问题</SPAN><SPAN lang=EN-US>.</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">写的程序中</SPAN><SPAN lang=EN-US>,</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">主函数是一个死循环</SPAN><SPAN lang=EN-US>,</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">然后定义了一组优先级较低的</SPAN><SPAN lang=EN-US>PIT</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">中断和一组优先级较高的外部中断</SPAN><SPAN lang=EN-US>.</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">然后出现了问题</SPAN><SPAN lang=EN-US>,</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">当在</SPAN><SPAN lang=EN-US>main</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">函数中添加一些</SPAN><SPAN lang=EN-US>C</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">指令</SPAN><SPAN lang=EN-US>(</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">比如一个给全局变量赋值的语句</SPAN><SPAN lang=EN-US>)</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">后</SPAN><SPAN lang=EN-US>,</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">编译器能通过但在片上就会死机</SPAN><SPAN lang=EN-US>.</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">如果把这些指令关了</SPAN><SPAN lang=EN-US>,</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">就没问题</SPAN><SPAN lang=EN-US>,</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">或者把优先级高的外部中断关了也没问题</SPAN><SPAN lang=EN-US>.</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">而外部中断与这些指令是相符完全独立的</SPAN><SPAN lang=EN-US>.</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">例如在</SPAN><SPAN lang=EN-US>main</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">的循环中</SPAN><SPAN lang=EN-US>,</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">有语句</SPAN><SPAN lang=EN-US>temp=010;temp</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">是全局变量</SPAN><SPAN lang=EN-US>,</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">但没有中断共享</SPAN><SPAN lang=EN-US>.</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">下到片上就死机</SPAN><SPAN lang=EN-US>,</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">而把这句语句删了就没问题了</SPAN><SPAN lang=EN-US>,</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">还有一些其他的指令入</SPAN><SPAN lang=EN-US>for()</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">等</SPAN><SPAN lang=EN-US>,</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">也是一样</SPAN><SPAN lang=EN-US>.</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: &#39;Times New Roman&#39;; mso-hansi-font-family: &#39;Times New Roman&#39;">望高手帮助</SPAN></FONT></P>

whut_wj

找找硬件方面的原因,外部中断口是否有大灌电流,大电压,强干扰等.