關(guān)于上位機(jī)lab傳輸數(shù)據(jù)給51單片機(jī)，單片機(jī)進(jìn)行DA轉(zhuǎn)換的問(wèn)題。

ID:894654 · 發(fā)表于 2021-6-28 00:19

大佬們，想問(wèn)一下關(guān)于上位機(jī)lab傳輸數(shù)據(jù)給51單片機(jī)，單片機(jī)進(jìn)行DA轉(zhuǎn)換的問(wèn)題。DA單獨(dú)調(diào)試的時(shí)候可以成功，換成上位機(jī)發(fā)送數(shù)據(jù)存進(jìn)數(shù)組，數(shù)組里的數(shù)據(jù)DA轉(zhuǎn)換示波器就沒(méi)反應(yīng)了。想著可能是數(shù)組里面的元素是十六進(jìn)制的問(wèn)題，之前單獨(dú)調(diào)試DA轉(zhuǎn)換常規(guī)十進(jìn)制數(shù)的時(shí)候，示波器上面可以顯示波形。（單片機(jī)用的是stc8、工作頻率22.1184M、DA轉(zhuǎn)換用的是TLC5620）在此想請(qǐng)教大佬們幾個(gè)問(wèn)題：1、DA轉(zhuǎn)換不能轉(zhuǎn)換十六進(jìn)制的數(shù)嗎？比如說(shuō)0Ｘ55？
2、如何要將數(shù)組類型進(jìn)行轉(zhuǎn)換，十六進(jìn)制數(shù)組怎么轉(zhuǎn)換為十進(jìn)制數(shù)組呢？比如 unsigned char a[]={0X55,0X44,0X33,0X22}轉(zhuǎn)為unsigned char b[]={85,68,51,34}。
3、這里想要實(shí)現(xiàn)2ms從上位機(jī)實(shí)時(shí)發(fā)送數(shù)據(jù)單片機(jī)，單片機(jī)實(shí)時(shí)進(jìn)行DA轉(zhuǎn)換2 ms輸出連續(xù)波形，該怎么做呢? Labview 需要安裝類似rt 驅(qū)動(dòng)嗎？
希望大佬們能幫忙解答一下。非常感謝

單片機(jī)部分代碼貼上。

#include <STC8.H>
#include<intrins.h>
#include "delay.h"
#include "uart.h"

unsigned int count,state;
//定義I/O端口

sbit CLK=P1^0; //串行輸數(shù)據(jù)
sbit DAT=P1^1; //串行時(shí)鐘，
sbit LOAD=P1^2; //串行數(shù)據(jù)裝載，下降沿有效
sbit LDAC=P1^3; //DAC更新鎖存控制，下降沿有效
void Timer0Init(void)
{
AUXR |= 0x80;

ID:894654 · 發(fā)表于 2021-6-28 13:51

代碼續(xù)附：
#include <STC8.H>
#include<intrins.h>
#include "delay.h"
#include "uart.h"

unsigned int count,state;
//定義I/O端口

sbit CLK=P1^0; //串行輸數(shù)據(jù)
sbit DAT=P1^1; //串行時(shí)鐘，
sbit LOAD=P1^2; //串行數(shù)據(jù)裝載，下降沿有效
sbit LDAC=P1^3; //DAC更新鎖存控制，下降沿有效
void Timer0Init(void)
{
AUXR |= 0x80; //疑問(wèn)????1T??
TMOD &= 0xF0; //疑問(wèn)??????
TMOD |= 0x01; //疑問(wèn)??????
TL0 = 0x33; //疑問(wèn)?????
TH0 = 0x53; //疑問(wèn)?????
TF0 = 0; //疑問(wèn)?TF0??

TR0=1;//啟動(dòng)定時(shí)器T0
ET0=1;//定時(shí)器T0允許中斷
}
void time0() interrupt 1  //2毫秒
{

TF0=0;
TL0 = 0x33; //疑問(wèn)?????
TH0 = 0x53; //疑問(wèn)?????
   if(recv_flag==1)
   {
   recv_flag=0;
   state=1;
   }
}
void Dac1( unsigned char addr, bit rng, unsigned char dat)
{
unsigned char n;
n = 2;
do
{
DAT = (bit)(addr & 0x02);
addr <<=1;
//addr:DAC通道地址，取值0~3，對(duì)應(yīng)通道A~D;
CLK = 0;
CLK = 1;
}
while ( --n != 0 );
DAT = rng;
CLK = 0;
CLK = 1;
n = 8;
do
{
DAT = (bit)(dat & 0x80);  //傳送數(shù)據(jù) 高位開(kāi)始傳
dat <<= 1;
CLK = 0;
CLK = 1;
}
while( --n != 0 )
;
LOAD = 0;
LOAD = 1;

}

void Init_TLC5620( ) // 選擇的通道
{
DAT = 1;
CLK = 1;
LDAC = 1;
LOAD = 1;
}

void main()
{
unsigned char i;

  //定時(shí)器初始化
Timer0Init();
EA=1;       //開(kāi)總中斷
Init_TLC5620();
UartInit();

DelayXms(10);
   while(1)
{
   if( state==1)
   { state=0;
   sendString(recv_buf);//處理數(shù)據(jù)
Dac1(0,0,recv_buf[i]);//有信號(hào)輸出
//             P1=0;
//      DelayXms(10);
P1=P1&0x77; // 同步先使P1^3和P1^7為0 P1&01110111
P1=P1|0x88; //同步  在使P1^3和P1^7為1 P1&10001000
i++;
//20210405  將 i>=247 改為number
if(i>=200)
{
i=1;

}
// clr_recvbuffer(recv_buf);//清除緩沖BUFFER
   }

}}

ID:372815 · 發(fā)表于 2021-6-29 02:28

代碼續(xù)附：
#include <STC8.H>
#include<intrins.h>
#include "delay.h"
#include "uart.h"

unsigned int count,state;
//定義I/O端口

sbit CLK=P1^0; //串行輸數(shù)據(jù)
sbit DAT=P1^1; //串行時(shí)鐘，
sbit LOAD=P1^2; //串行數(shù)據(jù)裝載，下降沿有效
sbit LDAC=P1^3; //DAC更新鎖存控制，下降沿有效
void Timer0Init(void)
{
AUXR |= 0x80;             //疑問(wèn)????1T??
      TMOD &= 0xF0;             //疑問(wèn)??????
      TMOD |= 0x01;             //疑問(wèn)??????
      TL0 = 0x33;             //疑問(wèn)?????
      TH0 = 0x53;             //疑問(wèn)?????
      TF0 = 0;             //疑問(wèn)?TF0??

      TR0=1;//啟動(dòng)定時(shí)器T0
      ET0=1;//定時(shí)器T0允許中斷
}
void time0() interrupt 1  //2毫秒
{

      TF0=0;
      TL0 = 0x33;             //疑問(wèn)?????
      TH0 = 0x53;             //疑問(wèn)?????
      if(recv_flag==1)
      {
      recv_flag=0;
      state=1;
      }
}
void Dac1( unsigned char addr, bit rng, unsigned char dat)
{
      unsigned char n;
      n = 2;
      do
      {
            DAT = (bit)(addr & 0x02);
            addr <<=1;
            //addr:DAC通道地址，取值0~3，對(duì)應(yīng)通道A~D;
            CLK = 0;
            CLK = 1;
      }
      while ( --n != 0 );
      DAT = rng;
      CLK = 0;
      CLK = 1;
      n = 8;
      do
            {
                     DAT = (bit)(dat & 0x80);  //傳送數(shù)據(jù) 高位開(kāi)始傳
                     dat <<= 1;
                     CLK = 0;
                     CLK = 1;
            }
            while( --n != 0 )
                     ;
            LOAD = 0;
            LOAD = 1;

}

void Init_TLC5620( ) // 選擇的通道
{
      DAT = 1;
      CLK = 1;
      LDAC = 1;
      LOAD = 1;
}

void main()
{
      unsigned char i;

  //定時(shí)器初始化
      Timer0Init();
EA=1;       //開(kāi)總中斷
      Init_TLC5620();
UartInit();

      DelayXms(10);
      while(1)
{
               if( state==1)
               { state=0;
                        sendString(recv_buf);//處理數(shù)據(jù)
                              Dac1(0,0,recv_buf[i]);//有信號(hào)輸出
//             P1=0;
//                               DelayXms(10);
                              P1=P1&0x77; // 同步先使P1^3和P1^7為0 P1&01110111
                              P1=P1|0x88; //同步  在使P1^3和P1^7為1 P1&10001000
                              i++;
                              //20210405  將 i>=247 改為number
                              if(i>=200)
                              {
                                    i=1;

                              }
//       clr_recvbuffer(recv_buf);//清除緩沖BUFFER
               }


}}

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關(guān)于上位機(jī)lab傳輸數(shù)據(jù)給51單片機(jī)，單片機(jī)進(jìn)行DA轉(zhuǎn)換的問(wèn)題。

關(guān)于上位機(jī)lab傳輸數(shù)據(jù)給51單片機(jī)，單片機(jī)進(jìn)行DA轉(zhuǎn)換的問(wèn)題。