servo motor + DC motor using UART

[gold12star]

hello to everyone
I kown how to control servo motor and DC motor using h-bridge
but I don't know how to combaine these two code together
and can I control them usnig only one port such as B
because I use UART and I can't control more than one port when I send the data through UART
using PIC16f877A and MikroC Pro
please help me
thank you

Servo motor

char i;
void main() {
 for (i=0; i<=50; i++){
   	trisb=0b00000000;
     	portb=0b10000000; //b7 input signal for servo motor
     	Delay_us(1500);
     	portb=0b00000000;
     	Delay_ms(18); }
}

DC motor

void main() {
TRISC = 0b00000000;
PORTC = 0b00001000;  // c3 for enable pin in h-bridge ,c2 for input pin in h-bridge
TRISD = 0b00000000;
PORTD = 0b00000010; // d1 for output pin in h-bridge
}

 

[bajgik]

Hi these are some tutorials on DC motor and servo motor:
Electronics & Control Engineering DC Motor Tutorials
**broken link removed**

can you exaplain more what is your question about?

 

[gold12star]

what I want is to control servo and DC motor at the same time using port B if I send some data through UART

 

[djsfantasi]

You are aware that the method of controlling DC motors and servo motors are very different?

 

[ckshivaram]

dc motor is controlled using pwm and servo motor is controlled by triggering the angle of movement....

from UART you can send some code as 1 that will control DC motor and 2 for controlling servo motor...

so you need l293 or ULN 2803 for dc motor and servo can be connected directly to port pin..

when you give command from terminal give the code as 1 or 2 to distinguish the command for servo and dc motor

 

[gold12star]

You are aware that the method of controlling DC motors and servo motors are very different?

I know and I can control them at the same time using different port
but when I use UART I can control only one port at a time
so can I control both of them using one port??
also I contorl DC motor just for clockwise and anti-clockwise not speed so no need for PWM

 

[gold12star]

this code I used to control Dc and servo motor and work perfectly
but when I used same code with UART
it dosn't work
any help please???

void main() {

TRISC = 0b00000000;
PORTC = 0b00001100;
TRISD = 0b00000000;
PORTD = 0b00000000;

trisb=0b00000000;
while(1){
portb=0b10000000;
delay_us(1500);
portb=0b00000000;
delay_ms(20);

}
}

the code with UART

char i;
void main() {
     
     UART1_Init(9600);               // Initialize UART module at 9600 bps
     delay_ms(100);              // Wait for UART module to stabilize

while(1){                     // Endless loop
      if (UART1_Data_Ready()==1) {     // If data is received,
      i= UART1_Read();    // read the received data,
      if(i=='U'){

      TRISC = 0b00000000;
      PORTC = 0b00001100;
      TRISD = 0b00000000;
      PORTD = 0b00000000;

      trisb=0b00000000;
      while(1){
      portb=0b10000000;
      delay_us(1500);
      portb=0b00000000;
      delay_ms(20);

      }
                   }

      else{
      TRISb=0b00000000;
      PORTB=0b01000000;}
      
  }

}
}

thanks
but I need help as soon as possible:-(
because this is my final year project

 

[gold12star]

anyone have a reason why that happend with me??
please I need helpppppppppppppp