Chief Delphi - [FTC]: Buttons RobotC

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[FTC]: Buttons RobotC

I am trying to assign buttons to control a Tetrix DC motor when ever i assign 2 functions to control the same motor say one button forward and one backward the motor coughs and jumps and vibrates moving spastically. I attached the code below, how could i solve this problem?

if(joy2Btn(2) )
{
motor[motorF] = 100;
}
else
{
motor[motorF] = 0;
}

if(joy2Btn(1) )
{
motor[motorF] = -100;
}
else
{
motor[motorF] = 0;
}

Re: [FTC]: Buttons RobotC

Let's break this down step by step:

Quote:

Originally Posted by John_1102 (Post 884213)

if(joy2Btn(2) )
{
motor[motorF] = 100;
}
else
{
motor[motorF] = 0;
}

What the above "if" is saying is "If Button 2 on Joystick 2 is pushed, set power to motorF to 100%. Otherwise, set it to 0".

Quote:

Originally Posted by John_1102 (Post 884213)

if(joy2Btn(1) )
{
motor[motorF] = -100;
}
else
{
motor[motorF] = 0;
}

This one is saying "if Button 1 on Joystick 2 is pushed, set power to motorF to 100% in reverse. Otherwise, set it to 0".

The problem is not with the if (true) conditions, it's the else conditions that are conflicting with each other. If Button 1 is pressed, then button might or might be pressed, so motorF shouldn't go (the else conditions). Likewise for Button 2.

A better way to right the code is:

Code:

if (joy2Btn(1))

    {

    motor[motorF] = -100;

    }

else if (joy2Btn(2))

   {

    motor[motorF] = 100;

   }

else

    {

    motor[motorF] = 0;

    }

Since the target of the conditional test is the same resource (motorF), you'll have to keep the tests with the target in one condition.

Good luck!

Re: [FTC]: Buttons RobotC

Quote:

Originally Posted by emmell (Post 884224)

Let's break this down step by step:

What the above "if" is saying is "If Button 2 on Joystick 2 is pushed, set power to motorF to 100%. Otherwise, set it to 0".

This one is saying "if Button 1 on Joystick 2 is pushed, set power to motorF to 100% in reverse. Otherwise, set it to 0".

The problem is not with the if (true) conditions, it's the else conditions that are conflicting with each other. If Button 1 is pressed, then button might or might be pressed, so motorF shouldn't go (the else conditions). Likewise for Button 2.

A better way to right the code is:

Code:

if (joy2Btn(1))

    {

    motor[motorF] = -100;

    }

else if (joy2Btn(2))

   {

    motor[motorF] = 100;

   }

else

    {

    motor[motorF] = 0;

    }

Since the target of the conditional test is the same resource (motorF), you'll have to keep the tests with the target in one condition.

Good luck!

Thanks this worked perfectly