RobotC & LCD

Programming Support ROBOTC Tech Support
#1

We are getting some strange errors when attempting to use a code we wrote. Here is the code. Any help would be awesome!
This is the errors we get:
Warning:Mismatched typedefs. Converting typedef ‘char’ to typedef ‘TVexReceiverState’, value ‘vrXmit1’
Error:Undefined variable ‘Program’. ‘short’ assumed.

#pragma config(Motor, port1, motor, tmotorVex269_HBridge, openLoop)
//!!Code automatically generated by ‘ROBOTC’ configuration wizard !!//

/---------------------------------------------------------------------------/
/* /
/ Description: Competition template for VEX EDR /
/ /
/---------------------------------------------------------------------------*/

// This code is for the VEX cortex platform
#pragma platform(VEX2)

// Select Download method as “competition”
#pragma competitionControl(Competition)

//Main competition background code…do not modify!
#include “Vex_Competition_Includes.c”

/---------------------------------------------------------------------------/
/* 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 cortex has been powered on and /
/ not every time that the robot is disabled. /
/---------------------------------------------------------------------------*/

void pre_auton()
{
// Set bStopTasksBetweenModes to false if you want to keep user created tasks
// running between Autonomous and Driver controlled modes. You will need to
// manage all user created tasks if set to false.
bStopTasksBetweenModes = true;
int lcdScreenMin = 1;
int lcdScreen = 1;
int lcdScreenMax = 3;
bLCDBacklight = true;

const short leftButton = 1;
const short centerButton = 2;
const short rightButton = 4;

while(vrDisabled == 1)
{
	if(nLCDButtons == leftButton)
	{
		if(lcdScreenMin == lcdScreen)
		{
			lcdScreen = lcdScreenMax;
			wait1Msec(250);
		}
		else
		{
			lcdScreen--;
			wait1Msec(250);
		}
	}
	if(nLCDButtons == rightButton)
	{
		if(lcdScreenMax == lcdScreen)
		{
			lcdScreen = lcdScreenMin;
			wait1Msec(250);
		}
		else
		{
			lcdScreen++;
			wait1Msec(250);
		}
	}
	else	if(nLCDButtons == leftButton)
	{
		if(lcdScreenMax == lcdScreen)
		{
			lcdScreen = lcdScreenMax;
			wait1Msec(250);
		}
		else
		{
			lcdScreen--;
			wait1Msec(250);
		}
	}
	if(lcdScreen == 1 && Program != 1)
	{
		displayLCDCenteredString(0, "program");
		displayLCDCenteredString(1, "1");
		if(nLCDButtons == centerButton)
		{
			Program = lcdScreen;
			displayLCDCenteredString(0, "autonomous has");
			displayLCDCenteredString(1, "been selected");
			wait1Msec(1500);
		}
	}
	else if(lcdScreen == 1 && Program == 1)
	{
		displayLCDCenteredString(0, "program");
		displayLCDCenteredString(1, "[1]");
	}
	else if(lcdScreen == 2 && Program !=2)
	{
		displayLCDCenteredString(0, "program");
		displayLCDCenteredString(1, "2");
		if(nLCDButtons == centerButton)
		{
			Program = lcdScreen;
			displayLCDCenteredString(0, "autonomous has");
			displayLCDCenteredString(1, "been selected");
			wait1Msec(1500);
		}
	}
	else if(lcdScreen == 2 && Program == 2)
	{
		displayLCDCenteredString(0, "program");
		displayLCDCenteredString(1, "[2]");
	}
	else if(lcdScreen == 3 && Program !=3)
	{
		displayLCDCenteredString(0, "program");
		displayLCDCenteredString(1, "3");
		if(nLCDButtons == centerButton)
		{
			Program = lcdScreen;
			displayLCDCenteredString(0, "autonomous has");
			displayLCDCenteredString(1, "been selected");
			wait1Msec(1500);
		}
	}
	else if(lcdScreen == 3 && Program == 3)
	{
		displayLCDCenteredString(0, "program");
		displayLCDCenteredString(1, "[3]");
	}
}


// Set bDisplayCompetitionStatusOnLcd to false if you don't want the LCD
// used by the competition include file, for example, you might want
// to display your team name on the LCD in this function.
// bDisplayCompetitionStatusOnLcd = false;

// 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. /
/---------------------------------------------------------------------------*/

task autonomous()
{
// …
if(Program == 1)
{
motor[port1] = 50;
wait(2);
motor[port1] = 0;
}
else if(Program == 2)
{
motor[port1] = 60;
wait(4);
motor[port1] = 0;
}
else if(Program == 3)
{
motor[port1] = 70;
wait(6);
motor[port1] = 0;
}
// …

// Remove this function call once you have "real" code.
AutonomousCodePlaceholderForTesting();

}

/---------------------------------------------------------------------------/
/* /
/ 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. /
/---------------------------------------------------------------------------*/

task usercontrol()
{
// User control code here, inside the loop

while (true)
{
	// 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.
	// ........................................................................

	// Remove this function call once you have "real" code.
	UserControlCodePlaceholderForTesting();
}

}
orangeload.docx (13.1 KB)

#2

You are using an enum instead of the internal variable to try and detect when the robot is disabled.

instead of this


	while(vrDisabled == 1)

use this


	while(bIfiRobotDisabled)

You also have a couple of other issues.


#pragma config(Motor,  port1,           motor,         tmotorVex269_HBridge, openLoop)

You cannot name a motor “motor”, that’s a reserved word.

You have not defined the variable “Program” anywhere.

#3