Stc8h8k series assembly and C51 actual combat - serial port sending menu interface to select different functions

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One 、 subject

Use serial port 1、 Timer T1 The pattern of 0 As a baud rate generator STC Serial port communication between the experimental box and the host computer ,STC Through serial port 1 Send the menu interface to the host , Host empty STC In the experimental box LED The lamp .
1） On a host computer , Press 1 key , Used to control the STC The test box is marked LED17( Connect to P6.7 On ) Of LED The lamp ;
2） Press 2 key , Used to control the STC The test box is marked LED16( Connect to P6.6 On ) Of LED The lamp ;
3） Press other keys to display information about exiting the program .

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Two 、 Code

#include "STC8h.h"
#include <intrins.H>

typedef unsigned char uchar;
typedef unsigned int  uint;

bit busy;
u8 Flag;
uchar GetC;
sbit control=P4^0;

void InitUART(void);
void SendData(uchar dat);
void SendString(uchar *s);

void gpio()		//gpio Initialize to quasi two-way port , At first, except P30,P31 Others are in high resistance state 
{
    
    P0M1 = 0x00;   P0M0 = 0x00;   // Set as quasi two-way port 
    P1M1 = 0x00;   P1M0 = 0x00;   // Set as quasi two-way port 
    P2M1 = 0x00;   P2M0 = 0x00;   // Set as quasi two-way port 
    P3M1 = 0x00;   P3M0 = 0x00;   // Set as quasi two-way port 
    P4M1 = 0x00;   P4M0 = 0x00;   // Set as quasi two-way port 
    P5M1 = 0x00;   P5M0 = 0x00;   // Set as quasi two-way port 
    P6M1 = 0x00;   P6M0 = 0x00;   // Set as quasi two-way port 
    P7M1 = 0x00;   P7M0 = 0x00;   // Set as quasi two-way port 
}

void main()
{
    
	control=0;   
	gpio();
	
	P0=0xff;
	InitUART();
	SendString("---------main menu----------\r\n input 1: Control LED7\r\n input 2: Control LED6\r\n other : exit program\r\n---------end menu----------\r\n");

    while(1)
	{
    
	  if(Flag==1)
	  {
    
		SendData(GetC);
		
		Flag=0;
	  }else if(Flag==2)
	  {
    
		SendString("Exited program\r\n");
		Flag=0;
	  }
	}
}
/*---------------------------- UART1 initialization  -----------------------------*/
void InitUART(void)
{
    
    SCON = 0x50;                //8 Bit data  
	  P_SW1= P_SW1 & 0x3F; 
    AUXR |= 0x40;                // Timer 1T Pattern 
	  AUXR &= 0xFE;	
    TMOD &= 0x0F;
    TMOD |= 0x20;                //8 Bit auto reload mode 
    TL1 = 0xDC;   				//
    TH1 = 0xDC;
    TR1 = 1;                    // Turn on timer 1
    ES = 1;                     // Enable serial port interrupt 
    EA = 1;

}

/*---------------------------- UART  interrupt  -----------------------------*/
void Uart() interrupt 4 using 1
{
    
    if (RI)
    {
    
        RI = 0;                 // After receiving characters ,RI clear 0
        GetC = SBUF; 
        if (GetC=='1') {
    P6=0x7f;P0=0X7F;Flag=1;}
		if (GetC=='2') {
    P6=0xbf;P0=0XBF;Flag=1;} 
		if(GetC!='1'&&GetC!='2') {
    Flag=2;}

    }
    if (TI)
    {
    
        TI = 0;                 // After sending characters TI clear 0
        busy = 0;               // After sending one character busy clear 0
    }
}

/*----------------------------  Send byte  ----------------------------*/
void SendData(uchar dat)
{
    
    while (busy);               
    busy = 1;
    SBUF = dat;                 // The data to be sent is stored SBUF
}

/*----------------------------  Send string function  ----------------------------*/
void SendString(uchar *s)
{
    
    while (*s !='\0')                  // The string is read before it stops 
    {
    
        SendData(*s++);         // Every byte sent s++
    }
} 

summary

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