Ovládání motoru s H můstkem

CODE: 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: ;Some Delay mov r7,#20H back: mov r6,#FFH back1: mov r5,#FFH here: djnz r5, here djnz r6, back1 djnz r7, back ret

►C programming CODE: #include #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(){ //Our main function while(1){ //Infinite loop rotate_f(); //Run forward delay(); //Some delay breaks(); //Stop delay(); //Some delay rotate_b(); //Run Backwards delay(); //Some delay breaks(); //Stop delay(); //Some delay } //Do this infinitely } void rotate_f(){ L293D_A = 1; //Make positive of motor 1 L293D_B = 0; //Make negative of motor 0 L293D_E = 1; //Enable L293D } void rotate_b(){ L293D_A = 0; //Make positive of motor 0 L293D_B = 1; //Make negative of motor 1 L293D_E = 1; //Enable L293D } void breaks(){ L293D_A = 0; //Make positive of motor 0 L293D_B = 0; //Make negative of motor 0 L293D_E = 0; //Disable L293D } void delay(){ //Some delay... unsigned char i,j,k; for(i=0;i<0x20;i++) for(j=0;j<255;j++) for(k=0;k<255;k++);

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