8051单片机C语言数据采集程序

//单片机：At89S52

//连接类型：232 |485 接口

//校验方式：checksum

//开发环境：keil C

＃i nclude
＃i nclude
＃i nclude "iic.h"
#define uchar unsigned char
#define uint unsigned int
uint Timer_Pro_Flag=0;//0为显示处理,1为时序采集处理
sbit TEST_CAP_VOL_CRLT=P1^0;//用于控制外部继电器
sbit PWM_Pin=P3^7;//PWM输出
sbit IrDA_in_Pin=P1^0;//红外脉冲输入检测脚
bit PWMFlag=0;
uchar OLD_TH0,OLD_TL0;
#define MAXCMD_LENGTH 7
#define AD_VOL_PER 1.04058 //正常采集时的电压校准值
#define AD_Loop_PickVol_PER 1.04058 //CD4051循环采集时的电压校准值
sbit WDTRST=0xA6;//At89S5x看门狗寄存器
sbit ADCLK=P2^0;
sbit ADOUT=P2^1;
sbit ADCS=P2^2;
//--------------------------
/************CD4051---8选1模拟开关芯片*****************/
/*
|------------------------------------------------------|
| 4 2 1 |
|-----------------------------------------------|------|
|端口 | INH C B A | | |
|------ 7 6 5 4 3 2 1 0 | 正值 | 取反 |
| 通道 |--------------------------------|-------|------|
|------|...............|8 4 2 1 | | |
|------|---------------|----------------|-------|------|
| 0 |0 0 0 0 0 0 0 0 | 0x00 | 0xff |
| 1 |0 0 0 0 0 0 1 0 | 0x02 | 0xf7 |
| 2 |0 0 0 0 0 1 0 0 | 0x04 | 0xfb |
| 3 |0 0 0 0 0 1 1 0 | 0x06 | 0xf3 |
| 4 |0 0 0 0 1 0 0 0 | 0x08 | 0xfd |
| 5 |0 0 0 0 1 0 1 0 | 0x0A | 0xf8 |
| 6 |0 0 0 0 1 1 0 0 | 0x0C | 0xf9 |
| 7 |0 0 0 0 1 1 1 0 | 0x0e | 0xf1 |
|---------------------------------------|-------|------|
*/
uchar CD4051_NUM[]={0x00,0x02,0x04,0x06,0x08,0x0A,0x0C,0x0e}; //0~7编码
sbit CD4051_A=P1^1;
sbit CD4051_B=P1^2;
sbit CD4051_C=P1^3;
sbit CD4051_INH=P1^4; //CD4051_INH为1时，，所有通导都不导通
bit CD4051_Vol_Conver_Flag=0; //0时为正常采集,1为CD4051循环采集
//--------------------------
//LED显示
//--------------------------
uchar LedCount=0;
uchar LED_BIT[5]; //用于显示的每一位数据码的内容
uchar LED_NUM[]={0x00,0x10,0x20,0x40,0x80};//选择显示位
//--------------------------------------------------------
void SendByte(unsigned char word)
{
TI=0;
SBUF=word;
while(TI==0);
TI=0;
}
uchar ComBuf[MAXCMD_LENGTH];//用于保存串口的数据
/*---少量延时---*/
void delay(uint t)
{
uint i=0;
for(;i<=t;i++);
}
void Pluckdelay(uint t)
{
uint i=0,j;
for(;i<=t;i++)
for(j=1;j<=1000;j++);
}
/*=================================
ComBuf[5]加入CheckSUM校验码
算法：0x01+not(字节1+字节2+...+字节N)
=================================*/
void SetCheckSUM()
{
ComBuf[5]=0x01+~(ComBuf[0]+ComBuf[1]+ComBuf[2]+ComBuf[3]+ComBuf[4]);
}
/*=============================================================
检测上位机发送来的ComBuf[5]checksum校验码和计算后的是否相等
正确则返回:1
错误则返回:0
==============================================================*/
bit ISCheckSUM()
{
uchar crc;
crc=0x01+~(ComBuf[0]+ComBuf[1]+ComBuf[2]+ComBuf[3]+ComBuf[4]);
if(ComBuf[5]==crc)
return 1;
else
{
ComBuf[1]=crc;//如果错误,则返回计算后得到的CHECKSUM校验码
ComBuf[2]=ComBuf[5];//返回原来上位机发送来的CHECKSUM校验码
return 0;
}
}
/*-----------------------------------
* *
* 等待接收上位机发来的指令 *
* *
-------------------------------------*/
void WaitComm()
{
uchar n=0;
RI=0;
while (1)
{
while(!RI);//等接收数据
//-----------------
ComBuf[n]=SBUF;
RI=0;
// SBUF=ComBuf[n];
if (ComBuf[n]==0x7e) break;//接收到结束符则退出
if (n>=MAXCMD_LENGTH)
n=0;//接收10个字节,如果还没有接收到0x7e结束符,就重新记录
else
n++;
}
}
/*-------------------------------
* *
* 发送combuf数据至上位机 *
* *
--------------------------------*/
void SendByteArray()
{
unsigned i;
SetCheckSUM();//加入ComBuf[5]的checkSUM校验码
ComBuf[4]=P0;//取读本模块地址
ComBuf[6]=0x7e;//结束符
for(i=0;i<=MAXCMD_LENGTH-1;i++)
{
SendByte(ComBuf[i]);
}
}
/*-------------------------------
* *
* 送端口状态至上位机 *
* *
--------------------------------*/
void GetP0()
{
switch(ComBuf[2])
{
case 0x00: ComBuf[3]=P0_0; break;
case 0x01: ComBuf[3]=P0_1; break;
case 0x02: ComBuf[3]=P0_2; break;
case 0x03: ComBuf[3]=P0_3; break;
case 0x04: ComBuf[3]=P0_4; break;
case 0x05: ComBuf[3]=P0_5; break;
case 0x06: ComBuf[3]=P0_6; break;
case 0x07: ComBuf[3]=P0_7; break;
default:
ComBuf[3]=P0;//为8时...则以上传整个port状态
}
}
//--------------------
void GetP1()
{
switch(ComBuf[2])
{
case 0x00: ComBuf[3]=P1_0; break;
case 0x01: ComBuf[3]=P1_1; break;
case 0x02: ComBuf[3]=P1_2; break;
case 0x03: ComBuf[3]=P1_3; break;
case 0x04: ComBuf[3]=P1_4; break;
case 0x05: ComBuf[3]=P1_5; break;
case 0x06: ComBuf[3]=P1_6; break;
case 0x07: ComBuf[3]=P1_7; break;
default:
ComBuf[3]=P1;//为8时...则以上传整个port状态
}
}
//---------------
void GetP2()
{
switch(ComBuf[2])
{
case 0x00: ComBuf[3]=P2_0; break;
case 0x01: ComBuf[3]=P2_1; break;
case 0x02: ComBuf[3]=P2_2; break;
case 0x03: ComBuf[3]=P2_3; break;
case 0x04: ComBuf[3]=P2_4; break;
case 0x05: ComBuf[3]=P2_5; break;
case 0x06: ComBuf[3]=P2_6; break;
case 0x07: ComBuf[3]=P2_7; break;
default:
ComBuf[3]=P2;//为8时...则以上传整个port状态
}
}
//--------------
void GetP3()
{
switch(ComBuf[2])
{
case 0x00: ComBuf[3]=P3_0; break;
case 0x01: ComBuf[3]=P3_1; break;
case 0x02: ComBuf[3]=P3_2; break;
case 0x03: ComBuf[3]=P3_3; break;
case 0x04: ComBuf[3]=P3_4; break;
case 0x05: ComBuf[3]=P3_5; break;
case 0x06: ComBuf[3]=P3_6; break;
case 0x07: ComBuf[3]=P3_7; break;
default:
ComBuf[3]=P3;//为8时...则以上传整个port状态
}
}
//-------发送AT89S5x的指定端口状态到上位机-----
void SendPortData()
{
switch (ComBuf[1])/*Port号*/
{
case 0x00: GetP0(); break;
case 0x01: GetP1(); break;
case 0x02: GetP2(); break;
case 0x03: GetP3(); break;
}
/*--------------------*/
SendByteArray();//发送数据
}
/*-------------------------------
* *
* 各个端口的状态设定 *
* *
--------------------------------*/
void SetP0()
{
switch(ComBuf[2])
{
case 0x00: P0_0=ComBuf[3]; break;
case 0x01: P0_1=ComBuf[3]; break;
case 0x02: P0_2=ComBuf[3]; break;
case 0x03: P0_3=ComBuf[3]; break;
case 0x04: P0_4=ComBuf[3]; break;
case 0x05: P0_5=ComBuf[3]; break;
case 0x06: P0_6=ComBuf[3]; break;
case 0x07: P0_7=ComBuf[3]; break;
default:
P0=ComBuf[3];//为8时...则设置整个port状态
}
}
//=================================
void SetP1()
{
switch(ComBuf[2])
{
case 0x00: P1_0=ComBuf[3]; break;
case 0x01: P1_1=ComBuf[3]; break;
case 0x02: P1_2=ComBuf[3]; break;
case 0x03: P1_3=ComBuf[3]; break;
case 0x04: P1_4=ComBuf[3]; break;
case 0x05: P1_5=ComBuf[3]; break;
case 0x06: P1_6=ComBuf[3]; break;
case 0x07: P1_7=ComBuf[3]; break;
default:
P1=ComBuf[3];//为8时...则设置整个port状态
}
}
//=================================
void SetP2()
{
switch(ComBuf[2])
{
case 0x00: P2_0=ComBuf[3]; break;
case 0x01: P2_1=ComBuf[3]; break;
case 0x02: P2_2=ComBuf[3]; break;
case 0x03: P2_3=ComBuf[3]; break;
case 0x04: P2_4=ComBuf[3]; break;
case 0x05: P2_5=ComBuf[3]; break;
case 0x06: P2_6=ComBuf[3]; break;
case 0x07: P2_7=ComBuf[3]; break;
default:
P2=ComBuf[3];//为8时...则设置整个port状态
}
}
//=================================
void SetP3()
{
switch(ComBuf[2])
{
case 0x00: P3_0=ComBuf[3]; break;
case 0x01: P3_1=ComBuf[3]; break;
case 0x02: P3_2=ComBuf[3]; break;
case 0x03: P3_3=ComBuf[3]; break;
case 0x04: P3_4=ComBuf[3]; break;
case 0x05: P3_5=ComBuf[3]; break;
case 0x06: P3_6=ComBuf[3]; break;
case 0x07: P3_7=ComBuf[3]; break;
default:
P3=ComBuf[3];//为8时...则设置整个port状态
}
}
/*=================================
WritePortData()
按上位机传来的格式进行端口的设置
=================================*/
void WritePortData()
{
switch (ComBuf[1])/*Port号*/
{
case 0x00: SetP0(); break;
case 0x01: SetP1(); break;
case 0x02: SetP2(); break;
case 0x03: SetP3(); break;
}
}
/*----------------------------------
* SetEA() *
* *
* 中断允许设定,(EA寄存器) *
* ComBuf[1]==>0x00为EA设定 *
* 0x01为读取EA值 *
------------------------------------*/
void SetEA()
{
if (ComBuf[1]==0x00)
EA=ComBuf[3];
else
{
ComBuf[3]=EA;
SendByteArray();//发送数据
}
}