8051 C Serial Stuff

ahmedragia21 · Apr 17, 2009

Hi , i'd like to recieve a string for example an AT phone , like it sends ERROR when i send a wrong AT Command , i wanna display this to an LCD , much like what hyper terminal does , the problem is i only know how to recieve a charachter , tried this code , it works but i wonder how this works lcd_puts(&array[0]);
but it always prints the string with vague charachters .

Code:

// for recieve the string
 char Ch;
 
   // Only dealing with received bytes here
   // -> Just check the RI flag
  	  i=0;
	 while(Ch!='\r')
	 {
     Ch=SBUF;
     array[i]=Ch;
      while(!RI);
      RI = 0;  // Clear RT flag
     i++;  
	
	  }

//for print 
 lcd_puts(&array[0]);



void lcd_puts(char *aaa){
unsigned int i=0;
for(;aaa[i]!=0;i++)lcd_data(aaa[i]);
}

colin mac · Apr 18, 2009

You can use the scanf function in Keil.

naveencali · Aug 17, 2009

where U wanna print a string, In PC or in LCD ?
and using what U are sending the String is it Controller?

Pommie · Aug 17, 2009

My guess would be that you are not terminating the string.

Try,

Code:

// for recieve the string
char Ch;
    // Only dealing with received bytes here
    // -> Just check the RI flag
    i=0;
    while(Ch!='\r')
    {
        Ch=SBUF;
        array[i]=Ch;
        while(!RI);
        RI = 0;  // Clear RT flag
        i++;  
	
    }
    [COLOR="Red"]array[i]=0;[/COLOR]

    //for print 
    lcd_puts(&array[0]);

Alternatively, change puts to,

Code:

void lcd_puts(char *aaa){
unsigned int i=0;
    for(;aaa[i]!=[COLOR="Red"]'\r'[/COLOR];i++)
        lcd_data(aaa[i]);
}

Edit, actually I would change the puts to,

Code:

void lcd_puts(char *aaa){
    while(*aaa!='\r')
        lcd_data(*aaa++);
}

But, only do that if your compiler allows using pointers in this way (and you understand it).

Mike.

8051 C Serial Stuff

ahmedragia21

Member

colin mac

New Member

naveencali

New Member

Pommie

Well-Known Member

Similar threads

8051 C Serial Stuff

ahmedragia21

Member

colin mac

New Member

naveencali

New Member

Pommie

Well-Known Member

Similar threads

Privacy & Transparency

Privacy & Transparency