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
txBuff[0] = 0x3a;
txBuff[1] = 0x07;
txBuff[2] = (unsigned char)ReadData[0];
txBuff[3] = (unsigned char)ReadData[1];
txBuff[4] = (unsigned char)ReadData[2];
txBuff[5] = (unsigned char)ReadData[3];
txBuff[6] = (unsigned char)ReadData[4];
txBuff[7] = (unsigned char)ReadData[5];
txBuff[8] = (unsigned char)ReadData[6];
txBuff[9] = (unsigned char)DataBuff2[0];
txBuff[10] = (unsigned char)DataBuff2[1];
txBuff[11] = (unsigned char)DataBuff2[2];
txBuff[12] = (unsigned char)DataBuff2[3];
txBuff[13] = (unsigned char)DataBuff2[4];
txBuff[14] = (unsigned char)DataBuff2[5];
txBuff[15] = (unsigned char)DataBuff2[6];
txBuff[16] = (unsigned char)(txBuff[0] ^ txBuff[1] ^ txBuff[2] ^ txBuff[3]
^ txBuff[4] ^ txBuff[5] ^ txBuff[6] ^ txBuff[7] ^ txBuff[8] ^ txBuff[9]
^ txBuff[10] ^ txBuff[11] ^ txBuff[12] ^ txBuff[13] ^ txBuff[14] ^ txBuff[15]);
for(i=0; i< 17; i++)
{
TERMIO_PutChar((unsigned char)txBuff);
}
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++)
{
TERMIO_PutChar((unsigned char)txBuff);
}
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？
我的串口初始化
void InitUart(void) {
/* ### Init_SCI init code */
//Baud rate = BUSCLK / (16 x SBR12:SBR0)
/* 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 */
SCIBD = BUSCLK/16/SciBandRate; //
/* SCIC1: LOOPS=0,SCISWAI=0,RSRC=0,M=0,WAKE=0,ILT=0,PE=0,PT=0 */
SCIC1 = 0x00;
/* SCIC2: TIE=0,TCIE=0,RIE=0,ILIE=0,TE=1,RE=0,RWU=0,SBK=0 */
SCIC2 = 0x08;
}
发送代码
void TERMIO_PutChar(unsigned char send)
{
volatile unsigned char dummy;
while(!SCIS1_TDRE);
dummy = SCIS1;
SCID = send;
}//end SPI_PutChar |
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