智能车制作

标题: 新手求帮忙visualscope虚拟串口示波器问题 [打印本页]

作者: Mt__________ 时间: 2013-8-12 15:36
标题: 新手求帮忙visualscope虚拟串口示波器问题
我用51模拟一段波形，可是在虚拟示波器上怎么也显示不了波形，接线我是51的TXD端口接下载器的RXD，程序如下：

#include <reg52.H>
#include <intrins.H>
#include <math.h>
#define uchar unsigned char
#define uint unsigned int

float OutData[4] = { 0 };

unsigned short CRC_CHECK(unsigned char *Buf, unsigned char CRC_CNT)
{
unsigned short CRC_Temp;
unsigned char i,j;
CRC_Temp = 0xffff;

for (i=0;i<CRC_CNT; i++){
      CRC_Temp ^= Buf[i];
      for (j=0;j<8;j++) {
         if (CRC_Temp & 0x01)
            CRC_Temp = (CRC_Temp >>1 ) ^ 0xa001;
         else
            CRC_Temp = CRC_Temp >> 1;
      }
}
return(CRC_Temp);
}

void send(uchar c)
{

SBUF=c;
while(TI==0);
TI=0;
ES=1;
}

void OutPut_Data(void)
{
  int temp[4] = {0};
  unsigned int temp1[4] = {0};
  unsigned char databuf[10] = {0};
  unsigned char i;
  unsigned short CRC16 = 0;
  for(i=0;i<4;i++)
{

temp[i]  = (int)OutData[i];
temp1[i] = (unsigned int)temp[i];

}

  for(i=0;i<4;i++)
  {
databuf[i*2] = (unsigned char)(temp1[i]%256);
databuf[i*2+1] = (unsigned char)(temp1[i]/256);
  }

huo

  CRC16 = CRC_CHECK(databuf,8);
  databuf[8] = CRC16%256;
  databuf[9] = CRC16/256;

  for(i=0;i<10;i++)
send(databuf[i]);
//uart_putchar(databuf[i]);
}

void main(void)
{

  float temp = 0.0;

  SCON=0x50; //串口方式1
  TMOD=0x20; //定时器1，定时方式为2
  PCON=0x00; //设定串口工作方式1/64
  TCON=0x40; //设定时器1开始计数
  TH1=0xfd;  //设定波特率为9600
  TL1=0xfd;
  TR1=1;
  EA=1;
  ES=1;

while(1)
{

  for(temp = 0; temp <= 3.14*2; temp += 0.1)

  {
   OutData[0] = sin(temp)*(float)1000;
   OutData[1] = sin(temp-3.14/4)*(float)1000;
   OutData[2] = sin(temp+3.14/4)*(float)1000;
   OutData[3] = sin(temp+3.14/2)*(float)1000;

   OutPut_Data();
  }
}
}

或者哪位大神能把能用的程序拿出来，，，感激不尽！！！！

作者: subingkiun 时间: 2015-7-17 09:47
（1）51是不支持浮点运算的。
（2）51的unsigned short只有8位，程序上市32位的。

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