So I got to program the autonomous and I want to use voids for it. How would I put it in the main program?
My void:
void goForward(){
LF.spin(vex::directionType::fwd,100,vex::velocityUnits::pct);
RF.spin(vex::directionType::fwd,100,vex::velocityUnits::pct);
LB.spin(vex::directionType::fwd,100,vex::velocityUnits::pct);
RB.spin(vex::directionType::fwd,100,vex::velocityUnits::pct);
}
void goBackward(){
LF.spin(vex::directionType::rev,100,vex::velocityUnits::pct);
RF.spin(vex::directionType::rev,100,vex::velocityUnits::pct);
LB.spin(vex::directionType::rev,100,vex::velocityUnits::pct);
RB.spin(vex::directionType::rev,100,vex::velocityUnits::pct);
}
void goRight(){
LF.spin(vex::directionType::fwd,100,vex::velocityUnits::pct);
RF.spin(vex::directionType::rev,100,vex::velocityUnits::pct);
LB.spin(vex::directionType::fwd,100,vex::velocityUnits::pct);
RB.spin(vex::directionType::rev,100,vex::velocityUnits::pct);
}
void goLeft(){
LF.spin(vex::directionType::rev,100,vex::velocityUnits::pct);
RF.spin(vex::directionType::fwd,100,vex::velocityUnits::pct);
LB.spin(vex::directionType::rev,100,vex::velocityUnits::pct);
RB.spin(vex::directionType::fwd,100,vex::velocityUnits::pct);
}
and in the main program(which is what im trynna make work):
void autonomous();{
void goForward();
}
when I try to add a time value to the void it shows it as an error
your functions do not have parameter of time.
when I try to add a time parameter it says “variable has incomplete type void”
show us how you add a time parameter. Your functions do not even have time parameter defined.
in your autonomous, call the void with:
goForward();
you are getting the error by putting void in front of the call, which the compiler wants to see completed with { // void content }
ex: void goForward(20);
your function do not accept parameter.
use wait(50, msec) after your function.
goForward();
wait(50, msec);I may not have the syntax exactly right but this is the general idea:
// You want to pass in a parameter to your function
void goForward(int t){
LF.spin(vex::directionType::fwd,100,vex::velocityUnits::pct);
RF.spin(vex::directionType::fwd,100,vex::velocityUnits::pct);
LB.spin(vex::directionType::fwd,100,vex::velocityUnits::pct);
RB.spin(vex::directionType::fwd,100,vex::velocityUnits::pct);
// Now use the parameter
wait(t, msec);
// Stop all the motors so it will do the next step.
LF.stop();
RF.stop();
LB.stop();
RB.stop();
}
int main() {
goForward(2000); // Forward for 2 seconds
wait(2000, msec); // Wait for 2 seconds
goForward(3000); // Forward for 3 seconds
}
still says variable has incomplete type void
When you declare a function such as:
void foo() {
wait(2000, msec);
}
Implicitly, it is interpreted as:
void foo(void) {
wait(2000, msec);
return;
}
So when you try to call foo(20), the compiler is telling you that 20 is an int which is not compatible with the void type.
Remove the void in front of void goForward(1000); on line 62. The line should read goForward(1000);
There is also an unnecessary ; before the {
Also, is this in the competition template? There should be an autonomous void already waiting for your code.
idk how to put it in competition template
its says use of undeclared identifier, btw I do have the void file attached
The competition template is an example program, and it is found by using the tab on the top of the window. I don’t remember where it is located because I don’t have a computer with vexcode with me at the moment, but it shouldn’t be too hard to find.
please copy and paste all your code and use to enclose your code
/*----------------------------------------------------------------------------*/
/* */
/* Module: main.cpp */
/* Author: VEX */
/* Created: Thu Sep 26 2019 */
/* Description: Competition Template */
/* */
/*----------------------------------------------------------------------------*/
// ---- START VEXCODE CONFIGURED DEVICES ----
// ---- END VEXCODE CONFIGURED DEVICES ----
#include "vex.h"
using namespace vex;
// A global instance of competition
competition Competition;
// define your global instances of motors and other devices here
/*---------------------------------------------------------------------------*/
/* Pre-Autonomous Functions */
/* */
/* You may want to perform some actions before the competition starts. */
/* Do them in the following function. You must return from this function */
/* or the autonomous and usercontrol tasks will not be started. This */
/* function is only called once after the V5 has been powered on and */
/* not every time that the robot is disabled. */
/*---------------------------------------------------------------------------*/
void pre_auton(void) {
// Initializing Robot Configuration. DO NOT REMOVE!
vexcodeInit();
// All activities that occur before the competition starts
// Example: clearing encoders, setting servo positions, ...
}
/*---------------------------------------------------------------------------*/
/* */
/* Autonomous Task */
/* */
/* This task is used to control your robot during the autonomous phase of */
/* a VEX Competition. */
/* */
/* You must modify the code to add your own robot specific commands here. */
/*---------------------------------------------------------------------------*/
void autonomous(void) {
// ..........................................................................
// Insert autonomous user code here.
// ..........................................................................
}
/*---------------------------------------------------------------------------*/
/* */
/* User Control Task */
/* */
/* This task is used to control your robot during the user control phase of */
/* a VEX Competition. */
/* */
/* You must modify the code to add your own robot specific commands here. */
/*---------------------------------------------------------------------------*/
void usercontrol(void) {
// User control code here, inside the loop
while (1) {
// This is the main execution loop for the user control program.
// Each time through the loop your program should update motor + servo
// values based on feedback from the joysticks.
// ........................................................................
// Insert user code here. This is where you use the joystick values to
// update your motors, etc.
// ........................................................................
wait(20, msec); // Sleep the task for a short amount of time to
// prevent wasted resources.
}
}
//
// Main will set up the competition functions and callbacks.
//
int main() {
// Set up callbacks for autonomous and driver control periods.
Competition.autonomous(autonomous);
Competition.drivercontrol(usercontrol);
// Run the pre-autonomous function.
pre_auton();
// Prevent main from exiting with an infinite loop.
while (true) {
wait(100, msec);
}
}If you are using variables, you can’t have a decimal as the input. I dont know why this is.
There are multiple variable types. Some of them dont do decimal numbers. I believe “float” and “double” are the two variables can you normally using for decimal numbers.