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小生SH4做个DD，用串口发送数据，数据放在txBuff[0-16]中，当我这样发送的时候<br /> txBuff[0] = 0x3a;<br /> txBuff[1] = 0x07;<br /> txBuff[2] = (unsigned char)ReadData[0];<br /> txBuff[3] = (unsigned char)ReadData[1];<br /> txBuff[4] = (unsigned char)ReadData[2];<br /> txBuff[5] = (unsigned char)ReadData[3];<br /> txBuff[6] = (unsigned char)ReadData[4];<br /> txBuff[7] = (unsigned char)ReadData[5];<br /> txBuff[8] = (unsigned char)ReadData[6];<br /> txBuff[9] = (unsigned char)DataBuff2[0];<br /> txBuff[10] = (unsigned char)DataBuff2[1];<br /> txBuff[11] = (unsigned char)DataBuff2[2];<br /> txBuff[12] = (unsigned char)DataBuff2[3];<br /> txBuff[13] = (unsigned char)DataBuff2[4];<br /> txBuff[14] = (unsigned char)DataBuff2[5];<br /> txBuff[15] = (unsigned char)DataBuff2[6];<br /> txBuff[16] = (unsigned char)(txBuff[0] ^ txBuff[1] ^ txBuff[2] ^ txBuff[3]<br /> ^ txBuff[4] ^ txBuff[5] ^ txBuff[6] ^ txBuff[7] ^ txBuff[8] ^ txBuff[9]<br /> ^ txBuff[10] ^ txBuff[11] ^ txBuff[12] ^ txBuff[13] ^ txBuff[14] ^ txBuff[15]);<br /> for(i=0; i< 17; i++) <br /> {<br /> TERMIO_PutChar((unsigned char)txBuff);<br /> } <br />用串口调试工具接收到的数据居然是txBuff[15] txBuff[16] txBuff[0]....txBuff[14],奇怪的是为什么txBuff[15] txBuff[16]，会在最前面，如果for(i=0; i< 17; i++) <br /> {<br /> TERMIO_PutChar((unsigned char)txBuff);<br /> } <br />后面+个NOP，在这个NOP设置个断点，每次发送又是好的，顺序是对的从txBuff[0]....txBuff[16],那位高手能回答一下吗？<br />我的串口初始化<br />void InitUart(void) {<br /> /* ### Init_SCI init code */<br />//Baud rate = BUSCLK / (16 x SBR12:SBR0)<br /> /* SCIBD: SBR12=0,SBR11=0,SBR10=0,SBR9=0,SBR8=0,SBR7=0,SBR6=0,SBR5=0,SBR4=1,SBR3=1,SBR2=0,SBR1=1,SBR0=0 */<br /> SCIBD = BUSCLK/16/SciBandRate; // <br /> /* SCIC1: LOOPS=0,SCISWAI=0,RSRC=0,M=0,WAKE=0,ILT=0,PE=0,PT=0 */<br /> SCIC1 = 0x00; <br /> /* SCIC2: TIE=0,TCIE=0,RIE=0,ILIE=0,TE=1,RE=0,RWU=0,SBK=0 */<br /> SCIC2 = 0x08; <br />}<br />发送代码<br />void TERMIO_PutChar(unsigned char send) <br />{<br /> volatile unsigned char dummy;<br /> <br /> while(!SCIS1_TDRE);<br /> dummy = SCIS1;<br /> SCID = send; <br />}//end SPI_PutChar |
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