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在做F28035的can通讯中， 程序 发送邮箱 ECanaMboxes.MBOX25.MDL.all = (u32)ParaList[F0_07];
在线调试发现，(u32)ParaList[F0_07]的值无法赋值给ECanaMboxes.MBOX25.MDL.all ，即使将(u32)ParaList[F0_07];换成常数也不行、
使用CCS3.3软件
接上 ，完整发送程序
if(ECanaShadow.CANTA.bit.TA25 == 1) { ECanaMboxes.MBOX25.MDL.all = ParaList[F0_07]; ECanaMboxes.MBOX25.MDH.all = 0;
ECanaShadow.CANTA.all = 0; ECanaShadow.CANTA.bit.TA25 = 1; ECanaRegs.CANTA.all = ECanaShadow.CANTA.all; }
继续调试发现，当在ECanaMboxes.MBOX25.MDL.all = ParaList[F0_07];处设置断点，可以正常读取；如果断点设置在 ECanaMboxes.MBOX25.MDH.all = 0;处 ，则无法正常工作；另外通过
do { ECanaShadow.CANTA.all = ECanaRegs.CANTA.all; } while(ECanaShadow.CANTA.bit.TA25 == 0 );
ECanaMboxes.MBOX25.MDL.all = ParaList[F0_07]; ECanaMboxes.MBOX25.MDH.all = 0;
ECanaShadow.CANTA.all = 0; ECanaShadow.CANTA.bit.TA25 = 1; // Clear TA5 ECanaRegs.CANTA.all = ECanaShadow.CANTA.all;
方式发送，正常
