pic 16f877a using 2 pwmchannels

[aswinishere007]

hai,I am new to Pic microcontrollers.Is it possible to use the 2 PWM channls in PIC 16f877A simultaneously?i have a code for pwm in ccp1 module.I want two pwm for controlling two motors.How can i use ccp2 in pwm mode?I use MPLAB IDE,HI TECH C complier....pls anyone provide me the code

 

[sarathsnairpoonjar]

yes it is possible to use two ccps simultaneously..but i did it using mikroc not in hitech c

 

[ragav4456]

unsigned int value1,value2;
void main()

{
	ADCON1=0X06;                                                                                                                                      ;
	TRISA=0XFF;
	TRISC=0X00;
	CCP1CON=0X0C;
	T2CON=0X04;
	//CCPR2L=0x3F;
	PR2=49;
	PORTA=0x00;
	PORTC=0x00;
	while(1)
	{
		ADCON0=0X80;
		//delay();
		ADGO=1;
		
		CCP1CON=0b00001100;
		CCPR1L=0b00000101;
		CCP2CON=0b00001100;
		CCPR2L=0b00000101;
	} 	
}

delay()
{                                                                                                                                                                                                                                                                                                 
	unsigned int i;
	for(i=0;i<200;i++);
}

Check this

 

[aswinishere007]

it says undefined identifier ADG0

 

[Tahmid]

hai,I am new to Pic microcontrollers.Is it possible to use the 2 PWM channls in PIC 16f877A simultaneously?i have a code for pwm in ccp1 module.I want two pwm for controlling two motors.How can i use ccp2 in pwm mode?I use MPLAB IDE,HI TECH C complier....pls anyone provide me the code

Yes it's possible to use both channels simultaneously. PWM module 1 settings are set by configuring CCP1CON. PWM module 2 settings are set by configuring CCP2CON. So, just configure CCP2CON for PWM mode just as you'd do for CCP1CON. Remember that both modules share the same time base - PR2. So they'll both operate at the same frequency. This shouldn't be a problem since you'll be controlling 2 motors.

Hope this helps.
Tahmid.

 

[azarutz]

it says undefined identifier ADG0

use

GO=1;  //   instead ADGO=1

it works in this way in my HI-TECH C .

 

[Tahmid]

ADGO refers to the ADGONE bit in the 16F877A. How a bit is defined in the compiler is found in the related header file. So, you should consult the header file for PIC16F877A for your compiler.