Relay program?

[Alan Anderson]

Originally Posted by team877

here is our code you asked for....

void operatorControl ( void )
{
	unsigned char x;

	while ( 1 )
	{
		SetPwm ( 2 , x ) ; //  We’re setting are variable to the motor we want it to measure
		if ( 125 < x && x < 129 ) 
		{ // We want this relay to engage between these speeds
			SetRelay ( 1 , 1 , 0 ) ;
		}
		else
		{ // And if not turn the relay off
			SetRelay ( 1 , 0 , 0 ) ;
		}
	}
}

I don't see anything that sets the value of x. Did you forget the line that reads the joystick value?

(Is there a reason you posted it as a Word document containing a picture, instead of just copying the text? I don't use Word, and it was inconvenient to convert your file to a readable form.)

[team877]

the Setpwm (1, x) is a window that you put your variable in so "x" is set to the value of pwm 1

[Alan Anderson]

Originally Posted by team877

the Setpwm (1, x) is a window that you put your variable in so "x" is set to the value of pwm 1

Isn't it the other way around? As an output function, SetPwm( 1, x ) sets pwm 1 to the value of x. I'm not aware of a built-in way to read the present value of a pwm output using easyC.

So where in your program do you actually control the pwm output that you want to use as the trigger for your relay?

[Mark McLeod]

Normal operation would be to:

1) Get the desired drive value from the driver--GetOIAInput()

2) Do your tests on when you want your relay to be active--if () else

3) Output your relay command--SetRelay()

4) Set your PWM Output--SetPWM()