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序号：58248 发表者：狂战士 发表日期：2003-10-30 23:05:32
<br>主题：请看关于提取数据出现的问题!
<br>内容：void CHEXDlg::OnButton1() <BR>{ <BR>BYTE bt[] = {0x00,0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x80,0x80,0x00,0x00,0x00,<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0x00,0x80,0x80,0x80,0x80,0x80,0x80,0x00,0x80,0x80,0x00,0x00,0x00,0x00,0x80,0x80,<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0x00,0x00,0x80,0x00,0x80,0x00,0x00,0x00,0x80,0x00,0x00,0x80,0x00,0x00,0x00,0x00,<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0x80,0x80,0x00,0x00,0x80,0x00,0x50,0x41,0x53,0x53,0xE0,0xAE,0x06,0x01,0x07,0xD0,<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0x07,0x01,0x01,0x02,0x2B,0x27,0x03,0xEF,0xC0};<BR>&nbsp;&nbsp;&nbsp;&nbsp; int num1=(short)(*((unsigned short*)bt+59));<BR>&nbsp;&nbsp;&nbsp;&nbsp; int num2=(char)(*(bt+62));<BR>&nbsp;&nbsp;&nbsp;&nbsp; int num3=(char)(*(bt+63));<BR>&nbsp;&nbsp;&nbsp;&nbsp; int num4=(char)(*(bt+64));<BR>&nbsp;&nbsp;&nbsp;&nbsp; int num5=(char)(*(bt+65));<BR>&nbsp;&nbsp;&nbsp;&nbsp; int num6=(char)(*(bt+66));<BR>&nbsp;&nbsp;&nbsp;&nbsp; m_MSG1.Format(&#34;具体数据是:%d,%d,%d,%d,%d,%d&#34;,num1,num2,num3,num4,num5,num6);<BR>&nbsp;&nbsp;&nbsp;&nbsp; UpdateData(FALSE);<BR>}<BR>bt数组里的内容是从串口接收来的,其中有用的是&#34;0x01,0x07,0xD0,&nbsp;&nbsp;&nbsp;&nbsp; 0x07,0x01,0x01,0x02,0x2B,0x27,0x03,0xEF,0xC0&#34;<BR>它的具体格式是这样的01为开始位,07是数据长度,0xD0,&nbsp;&nbsp;&nbsp;&nbsp; 0x07,0x01,0x01,0x02,0x2B,0x27是具体数据,0xD0,0x07表示年,其余分别表示月日时分秒,03是结束位,00 F9是校验位,上面的代码能提取月日时分秒,可是不能提取年,提出的都是莫名其妙的数字,请大家看看
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回复者：xiongli 回复日期：2003-10-30 23:40:50
<br>内容：D0 07<BR>也就是<BR>2000阿<BR>注意D0 07可能应该是07 D0<BR>07 D0　＝ 2000
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回复者：狂战士 回复日期：2003-10-31 08:31:10
<br>内容：TO:xiongli<BR>0x07,0xD0,0x07<BR>第一个0x07是数据长度,0xD0,0x07是代表2000的,不需要高低位交换!
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<font color=red>答案被接受</font><br>回复者：LuckGood 回复日期：2003-10-31 09:06:51
<br>内容：ft。你下标数错了，应该是第60byte开始才为日期数据；注意你别忘了应该是在指针指到正确位置时再进行指针类型转换！<BR>int num1=(short)(*((unsigned short*)(bt+60)));应该可以了。<BR>
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回复者：苗秦 回复日期：2003-10-31 09:27:39
<br>内容：其实这个和你上次问的问题都差不多,解决办法如下:<BR>因为你要得到的数据是两个字节的,所以采用word<BR>void CHEXDlg::OnButton1() <BR>{ <BR>BYTE bt[] = {0x00,0x00,0x00,0x80,0x80,0x80,0x80,0x00,0x80,0x80,0x00,0x00,0x00,<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0x00,0x80,0x80,0x80,0x80,0x80,0x80,0x00,0x80,0x80,0x00,0x00,0x00,0x00,0x80,0x80,<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0x00,0x00,0x80,0x00,0x80,0x00,0x00,0x00,0x80,0x00,0x00,0x80,0x00,0x00,0x00,0x00,<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0x80,0x80,0x00,0x00,0x80,0x00,0x50,0x41,0x53,0x53,0xE0,0xAE,0x06,0x01,0x07,0xD0,<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 0x07,0x01,0x01,0x02,0x2B,0x27,0x03,0xEF,0xC0};<BR>&nbsp;&nbsp;&nbsp;&nbsp; word num1=*(WORD*)((unsigned short*)bt+59));<BR>&nbsp;&nbsp;&nbsp;&nbsp; int num2=(char)(*(bt+62));<BR>&nbsp;&nbsp;&nbsp;&nbsp; int num3=(char)(*(bt+63));<BR>&nbsp;&nbsp;&nbsp;&nbsp; int num4=(char)(*(bt+64));<BR>&nbsp;&nbsp;&nbsp;&nbsp; int num5=(char)(*(bt+65));<BR>&nbsp;&nbsp;&nbsp;&nbsp; int num6=(char)(*(bt+66));<BR>&nbsp;&nbsp;&nbsp;&nbsp; m_MSG1.Format(&#34;具体数据是:%d,%d,%d,%d,%d,%d&#34;,(int)num1,num2,num3,num4,num5,num6);<BR>&nbsp;&nbsp;&nbsp;&nbsp; UpdateData(FALSE);<BR>}<BR>
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