main.c

一种染色机的数字输入输出模块（PM32）,其中含有tip2603和74hc589的c语言驱动程序

#include <reg51.h>
#include <intrins.h>
sbit CS_A   =  P3^3;  
sbit CS_B   =  P3^4;  
sbit CS_C   =  P3^5;  
sbit S_SCK  =  P1^7;
sbit S_SDO  =  P1^6;
sbit S_SDI  =  P1^5;
sbit S_LOAD  =  P3^6;
unsigned  char read_data[2]=0;
unsigned char bdata comdata[2]=0;
unsigned char bdata valve[3]=0;

#define INBUF_LEN 4   //数据长度

unsigned char  inbuf1[INBUF_LEN];
unsigned char   checksum,count3;
bit           read_flag=0;
sbit tx_enable=P3^2;
sbit v1=valve[0]^0;
sbit v2=valve[0]^1;
sbit v3=valve[0]^2;
sbit v4=valve[0]^3;
sbit v5=valve[0]^4;
sbit v6=valve[0]^5;

sbit v7= valve[1]^0;
sbit v8= valve[1]^1;
sbit v9= valve[1]^2;
sbit v10=valve[1]^3;
sbit v11=valve[1]^4;
sbit v12=valve[1]^5;

sbit v13=valve[2]^0;
sbit v14=valve[2]^1;
sbit v15=valve[2]^2;
sbit v16=valve[2]^3;
sbit led_red=valve[2]^4;
sbit led_gre=valve[2]^5;

sbit v1_1=comdata[0]^0;
sbit v2_2=comdata[0]^1;
sbit v3_3=comdata[0]^2;
sbit v4_4=comdata[0]^3;
sbit v5_5=comdata[0]^4;
sbit v6_6=comdata[0]^5;
sbit v7_7=comdata[0]^6;
sbit v8_8=comdata[0]^7;

sbit v9_9= comdata[1]^0;
sbit v10_10=comdata[1]^1;
sbit v11_11=comdata[1]^2;
sbit v12_12=comdata[1]^3;
sbit v13_13=comdata[1]^4;
sbit v14_14=comdata[1]^5;
sbit v15_15=comdata[1]^6;
sbit v16_16=comdata[1]^7;
/*******************************************************************/
/*                                                                 */
/*  延时函数                                                       */
/*                                                                 */
/*******************************************************************/
void delay(int ms)
{
    while(ms--)
	{
      unsigned char i;
	  for(i=0;i<250;i++)  
	   {
	    _nop_();			   
		_nop_();
		_nop_();
		_nop_();
	   }
	}
}
void write(unsigned char dd)
 {
	unsigned char i;
    for (i=0;i<8;i++) 
	{
      S_SDI=dd&0x80;
      S_SCK=1;
   	  dd<<=1;
	  _nop_();
	  _nop_();
      S_SCK=0;
	  _nop_();
	  _nop_();
	 }
	 }

void output__tip2603(unsigned char writedata[3])
{ 
 CS_C=0;
 CS_B=0;
 CS_A=1;
write(writedata[0]);
 CS_C=0;
 CS_B=1;
 CS_A=0;
write(writedata[1]);
 CS_C=0;
 CS_B=1;
 CS_A=1;
write(writedata[2]);
}
void read_74hc589(unsigned char readdata[2])
 {
	unsigned char i,j,d_dat=0;
	S_LOAD=0;
    S_LOAD=1;
	for(j=0;j<2;j++)
	{
    for (i=0;i<8;i++) 
	{
	S_SCK=0;
    d_dat<<=1;
	d_dat|=S_SDO;
	S_SCK=1;	
    }
    readdata[j]=d_dat;
	}
 }

void init_serialcomm(void)
{
    SCON  = 0x50;       //SCON: serail mode 1, 8-bit UART, enable ucvr 
    TMOD |= 0x20;       //TMOD: timer 1, mode 2, 8-bit reload 
    PCON |= 0x80;       //SMOD=1; 
    TH1   = 0xFA;       //Baud:9600  fosc=11.0592MHz 
    IE   |= 0x90;       //Enable Serial Interrupt 
    TR1   = 1;          // timer 1 run 
   // TI=1; 
}

//向串口发送一个字符 
void send_char_com(unsigned char ch)  
{
    SBUF=ch;
    while(TI==0);
    TI=0;
}

//向串口发送一个字符串，strlen为该字符串长度 
void send_string_com(unsigned char *str,unsigned int strlen)
{  
    unsigned int k=0;
	tx_enable=1;
    do 
    {
        send_char_com(*(str + k));
        k++;
    } while(k < strlen);
	tx_enable=0;
}


//串口接收中断函数 
void serial () interrupt 4 using 3 
{
    if(RI)
    {
        unsigned char ch;
        RI = 0;
        ch=SBUF;
        if(ch>127)
        {
             count3=0;
             inbuf1[count3]=ch;
             checksum= ch-128;
        }
        else 
        {
             count3++;
             inbuf1[count3]=ch;
             checksum ^= ch;
             if (count3==(INBUF_LEN-1))// && (!checksum) )
             {
                 read_flag=1;  //如果串口接收的数据达到INBUF_LEN个，且校验没错， 
                               //就置位取数标志 
             }
        }
    }

}


void main()
{
init_serialcomm();
while(1)
{
v1=v1_1;
v2=v2_2;
v3=v3_3;
v4=v4_4;
v5=v5_5;
v6=v6_6;
v7=v7_7;
v8=v8_8;

v9=v9_9;
v10=v10_10;
v11=v11_11;
v12=v12_12;
v13=v13_13;
v14=v14_14;
v15=v15_15;
v16=v16_16;
output__tip2603(valve);
  CS_C=1;
  CS_B=0;
  CS_A=0;
  read_74hc589(read_data);
delay(50);
if(read_flag)  //如果取数标志已置位，就将读到的数从串口发出 
{
  read_flag=0; //取数标志清0 
  comdata[0]=inbuf1[2];
  comdata[1]=inbuf1[3];
  send_string_com(read_data,2);
  led_gre=~led_gre;//正在通讯
   led_red=0;
 }
 else
 {
 led_gre=0;
 led_red=1;//通讯停止
 }

}
}