MCU 8051 IDE

MCU 8051 IDE
popis:	Vývoj aplikace pro 8051 v asm nebo C
vývojář	Martin Ošmera
aktuální verze	1.4.9
OS	Unix-like, Microsoft Windows, freeBSD
typ softwaru	aplikační
licence	GNU General Public License
web	wiki Download SDCC - Small Device C Compiler

Založení nového projektu

1. nastavte si přístup na svůj domovský disk (v učebně VYT5 je problematické použití písmena H) vhodnější nastavení je např.: net use Z: \\obelix\students\jmeno
2. Project name: vyplňte název projektu
3. Project directory: vypište Z:/MIT3r
4. Vše ostatní nechte

• 
  úvodní obrazovka
• 
  založení nového projektu
• 
  cesta k adresáři Z:/MIT3r

Example

Pro vývoj aplikace v C nutno nainstalovat SDCC - Small Device C Compiler

Write to Port

start: mov A,#01010101b mov P3,A acall delay mov A,#10101010b mov P3,A acall delay sjmp start delay: mov R0,#01h ; 108 ms skok1: mov R1,#100 skok2: mov R2,#250 skok: DJNZ R2,skok DJNZ R1,skok2 DJNZ R0,skok1 ret end

#include <at89x51.h> void _delay_ms(unsigned int msec) //for 11.0592Mhz crystal { unsigned int i,j; for(i=0;i<msec;i++) { for(j=0;j<110;j++); } } void main () { while(1) { P3 = 0x55; _delay_ms(100); // 100 ms P3 = 0xAA; _delay_ms(100); } }

Read from Ports

 	org 0 ;pseudoinstrukce umistujici program do pameti programu pocitace adresou 000h

start:  	
	mov A,#P1
	mov P3,A
	sjmp start

Runing Light

	org 0 ;pseudoinstrukce umistujici program od 00h

  	mov P3,#11111110B	;
loop:	mov A,P3
	rlc A	 		;
	mov P3,A
	acall delay	 	;
 	sjmp loop	 	;
 	  	  
delay:	mov R0,#1		;
skok1:	mov R1,#226
skok2:	mov R2,#255
 
skok:	djnz	R2,skok
	djnz	R1,skok2
	djnz	R0,skok1
 
	ret 	 
	end

Runing Light C

#include <at89x51.h> #define LED P2_3 void main() { int i; while(1) { if (LED) { LED = 0; } else { LED = 1; } { for(i=0;i<10000;i++); } } }

#include <at89x51.h> #include <delay.h>   void main() {    while (1)    {       P1=0xff;       _delay_ms(50); // 50 ms       P1=0x00;       _delay_ms(50); // 50 ms    } } /* file delay.h contains: unsigned int i,j; void _delay_ms(unsigned int msec) // crystal 10 059 kHz { for(i=0;i<msec;i++) for(j=0;j<110;j++); }

Blink using TIMER

#include <at89x51.h> void main() { TMOD=0x10; TR1=1; for(;;) { P1_0=!P1_0; TH1=0xFE; TL1=0x0C; while(TF1==0); TF1=0; } }

7 segment

	MOV DPTR,#TAB 	
nastav:	MOV R5,#0	
zobraz:  MOV A,R5	
	MOVC A,@A+DPTR	
	MOV P3,A		
	INC R5		
	CJNE R5,#10,zobraz
	SJMP nastav

TAB:	DB 0C0h,0F9H,0A4H,0B0H,99H ;0,1,2,3,4,
	DB 92H,82H,0F8H,80H,90H    ;5,6,7,8,9,
	end

7 segment v2

	mov R6,#10    
START:	djnz R6,NEXT
	mov R6,#10
	mov R5,#0
NEXT:	mov DPTR,#TAB
	mov A,R5
	movc A,@A+DPTR
	mov P3,A
	inc R5
	sjmp START

TAB:	DB 0C0H,0F9H,0A4H,0B0H,99H ;0,1,2,3,4,
	DB 92H,82H,0F8H,80H,90H   ;5,6,7,8,9,
	end

7 segment - C

__sfr __at (0xB0) P3;

#define DELAYTIME   15 //Defined delay time constant, originally 65000
unsigned int temp1;

void delay(unsigned int temp)//Delay process
{
  while(--temp);
}

void main()
{
        P3=255;	//led is off  HGFEDCBA = "1"
        while(1)
	{
                P3=0Xc0;		//0 HG = "1" OFF
		temp1=DELAYTIME;
		delay(temp1);

		P3=0XF9;		//1 BC = "0" = ON
		temp1=DELAYTIME;
		delay(temp1);
		}
}

7 segment - C (tab)

#include <at89x51.h>

__code unsigned char out[16] = {0xC0,0xF9,0xA4,0xB0, //0,1,2,3
			        0x99,0x92,0x82,0xF8, //4,5,6,7
			        0x80,0x90,0x08,0x03, //8.9.A.B
			        0x46,0x21,0x06,0x0E};//C,D,E,F
void main(void)
{
    __data unsigned char i = 0;

     while (1) // program loop
     {
          P3 = out[i++];
          if (i==16)
               i=0;
     }
}

Two 7-segment

	 MOV	DPTR,#TAB	 

tens: 	 MOV	P0,#00000010B
	 MOV	R5,#01H			
units:	 MOV	R3,#00H		 
next:	 MOV	A,R3			 
	 MOVC	A,@A+DPTR	 
	 MOV 	P2,A
	 ACALL	delay				 
	 INC	R3				 
	 CJNE	R3,#10D,next
	 MOV	A,R5
	 MOVC	A,@a+dptr
	 MOV	P0,A
	 INC	R5
	 CJNE	R5,#11D,again
	 SJMP	tens
again:	 SJMP	units			 	
			
delay:	MOV	R2,#06D		 
temp2:	MOV	R1,#255D		 
temp1:	MOV	R0,#255D		 
	DJNZ	R0,$         
	DJNZ	R1,temp1		 
	DJNZ	R2,temp2		 
	RET			
			
TAB:	DB 00000010B	;0x02 	0D
	DB 10011111B	;0x9F	1D		
	DB 00100100B	;0x24	2D		
	DB 00001100B	;0x1C	3D		
	DB 10011000B	;0x98	4D
	DB 01001000B	;0x48	5D
	DB 01000000B	;0x40	6D		
	DB 00011110B	;0x1E	7D		
	DB 00000000B	;0x00	8D		
	DB 00001000B	;0x0F	9D					
END

Counter

	MOV	TMOD,#00000001B
  	MOV	TH0,#00H
  	MOV	TL0,#00H
  	SETB	TR0

	MOV DPTR,#TAB 	;
nastav:	MOV R5,#0	;
zobraz:  MOV A,R5	
	MOVC A,@A+DPTR	;
	MOV P3,A		
	INC R5		;
	acall test
	CJNE R5,#10,zobraz
	SJMP nastav

test:
;	ACALL	ZPOZD
 	JNB     P1.0,$		;
; 	ACALL	ZPOZD
 	JB	P1.0,$		;
	ret

ZPOZD:	MOV		R0,#05H
SKOK:	JNB		TF0,$
	CLR		TF0
 	DJNZ		R0,SKOK
 	RET

TAB:	DB 0C0h,0F9H,0A4H,0B0H,99H ;0,1,2,3,4,
	DB 92H,82H,0F8H,80H,90H    ;5,6,7,8,9,
	end

L293

info

L293D_A equ P2.0	 ;L293D A - Positive of Motor
L293D_B equ P2.1	 ;L293D B - Negative of Motor
L293D_E equ P2.2	 ;L293D E - Enable pin of IC

org 0H
Main:
     acall rotate_f	 ;Rotate motor forward
     acall delay	 ;Let the motor rotate
     acall break	 ;Stop the motor
     acall delay	 ;Wait for some time
     acall rotate_b	 ;Rotate motor backward
     acall delay	 ;Let the motor rotate
     acall break	 ;Stop the motor
     acall delay	 ;Wait for some time
     sjmp Main	         ;Do this in loop

rotate_f:
     setb L293D_A	 ;Make Positive of motor 1
     clr L293D_B	 ;Make negative of motor 0
     setb L293D_E	 ;Enable to run the motor
     ret	         ;Return from routine

rotate_b:
     clr L293D_A	 ;Make positive of motor 0
     setb L293D_B	 ;Make negative of motor 1
     setb L293D_E	 ;Enable to run the motor
     ret	         ;Return from routine

break:
     clr L293D_A	 ;Make Positive of motor 0
     clr L293D_B	 ;Make negative of motor 0
     clr L293D_E	 ;Disable the o/p
     ret	         ;Return from routine

delay:  mov r7,#20H
back:	mov r6,#FFH
back1:  mov r5,#FFH
here:	djnz r5, here
        djnz r6, back1
        djnz r7, back
        ret

#include <at89x51.h> 

#define L293D_A P2_0    //Positive of motor
#define L293D_B P2_1    //Negative of motor
#define L293D_E P2_2    //Enable of L293D

// Function Prototypes
void rotate_f(void);     //Forward run funtion
void rotate_b(void);     //Backward run function
void breaks(void);       //Motor stop function
void delay(void);        //Some delay

void main(){            //
       while(1){        //
           rotate_f();  //
           delay();     //
           breaks();    //
           delay();     //
           rotate_b();  //
           delay();     //
           breaks();    //
           delay();     //
               }        //
}

void rotate_f(){
           L293D_A = 1; //
           L293D_B = 0; //
           L293D_E = 1; //
}

void rotate_b(){
           L293D_A = 0; //
           L293D_B = 1; //
           L293D_E = 1; //
}

void breaks(){
           L293D_A = 0; //
           L293D_B = 0; //
           L293D_E = 0; //
}

void delay(){            //
           unsigned char i,j,k;
           for(i=0;i<32;i++)
           for(j=0;j<255;j++)
           for(k=0;k<255;k++);
}

ATM13

	 MOV	DPTR,#TAB	 

tens: 	 MOV	P0,#00000010B
	 MOV	R5,#01H			
units:	 MOV	R3,#00H		 
next:	 MOV	A,R3			 
	 MOVC	A,@A+DPTR	 
	 MOV 	P0,A
	 ACALL	delay				 
	 INC	R3				 
	 CJNE	R3,#10D,next
	 MOV	A,R5
	 MOVC	A,@a+dptr
	 MOV	P2,A
	 INC	R5
	 CJNE	R5,#11D,again
	 SJMP	tens
again:	 SJMP	units			 	
			
delay:	MOV	R2,#06D		 
temp2:	MOV	R1,#255D		 
temp1:	MOV	R0,#255D		 
	DJNZ	R0,$         
	DJNZ	R1,temp1		 
	DJNZ	R2,temp2		 
	RET			
			
TAB:	DB 01000010B	;0x02 	0D
	DB 10011111B	;0x9F	1D		
	DB 00100100B	;0x24	2D		
	DB 00001100B	;0x1C	3D		
	DB 10011000B	;0x98	4D
	DB 01001000B	;0x48	5D
	DB 01000000B	;0x40	6D		
	DB 00011110B	;0x1E	7D		
	DB 00000000B	;0x00	8D		
	DB 00001000B	;0x0F	9D					
END

//2 Digit 7-Segment Up Down Counter Project using 8051 Microcontroller
//https://electronicswork.wordpress.com/2012/10/10/2-digit-7-segment-up-down-counter-project-using-8051-microcontroller/
#include <at89x51.h>

#define h P3_2	//up counter button 
#define g P3_3	//down counter button

int m=0;
int n=0;
int a,b;
int arr[10]={0x21,0x7D,0x13,0x19,0x4D,0x89,0x81,0x3D,0x01,0x09};

void main()
{
	P2=0x21;
	P0=0x21;
while(1)
{
	P3=0xFF;
	if(h==0)
  {
	if(n==99&&m==99)
     {
	P2=0xFE;
	P0=0xFE;
     }
else
  {
	m=m+1;
	n=n+1;
	a=m/10;
	b=n%10;
	P2=arr[a];
	P0=arr[b];

while(h==0);
  }
}

if(g==0)
 {
if(n==0&&m==0)
    {
	P2=0x3F;
	P0=0x3F;
    }
else
 {
	m=m-1;
	n=n-1;
	a=m/10;
	b=n%10;
	P2=arr[a];
	P0=arr[b];
while(g==0);
   }
  }
 }
}

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www

8051

http://sdcc.sourceforge.net/doc/sdccman.pdf

~Nožka