Hello all I am trying to program the LCD module to choose between different autonomous codes in RobotC and I was able to program it with some help from the sample program, but when I go through the LCD Module I only see my first four autonomous codes and I have eight. Is there a way to make the other code selections show on the LCD screen?
Here is the code I made.
void pre_auton()
{
SetDriveEncoder (0);
//------------- Beginning of User Interface Code ---------------
//Clear LCD
clearLCDLine(0);
clearLCDLine(1);
//Loop while center button is not pressed
while(nLCDButtons != centerButton)
{
//Switch case that allows the user to choose from 4 different options
switch(count){
case 0:
//Display first choice
displayLCDCenteredString(0, "RedMiddle1");
displayLCDCenteredString(1, "< Enter >");
waitForPress();
//Increment or decrement "count" based on button press
if(nLCDButtons == leftButton)
{
waitForRelease();
count = 3;
}
else if(nLCDButtons == rightButton)
{
waitForRelease();
count++;
}
break;
case 1:
//Display second choice
displayLCDCenteredString(0, "BlueMiddle1");
displayLCDCenteredString(1, "< Enter >");
waitForPress();
//Increment or decrement "count" based on button press
if(nLCDButtons == leftButton)
{
waitForRelease();
count--;
}
else if(nLCDButtons == rightButton)
{
waitForRelease();
count++;
}
break;
case 2:
//Display third choice
displayLCDCenteredString(0, "RedMiddle2");
displayLCDCenteredString(1, "< Enter >");
waitForPress();
//Increment or decrement "count" based on button press
if(nLCDButtons == leftButton)
{
waitForRelease();
count--;
}
else if(nLCDButtons == rightButton)
{
waitForRelease();
count++;
}
break;
case 3:
//Display fourth choice
displayLCDCenteredString(0, "BlueMiddle2");
displayLCDCenteredString(1, "< Enter >");
waitForPress();
//Increment or decrement "count" based on button press
if(nLCDButtons == leftButton)
{
waitForRelease();
count--;
}
else if(nLCDButtons == rightButton)
{
waitForRelease();
count = 0;
}
break;
case 4:
//Display Fifth Choice
displayLCDCenteredString(0, "RedHang1");
displayLCDCenteredString(1, "< Enter >");
waitForPress();
//Increment or decrement "count" based on button press
if(nLCDButtons == leftButton)
{
waitForRelease();
count--;
}
else if(nLCDButtons == rightButton)
{
waitForRelease();
count = 0;
}
break;
case 5:
//Display Sixth Choice
displayLCDCenteredString(0, "BlueHang1");
displayLCDCenteredString(1, "< Enter >");
waitForPress();
//Increment or decrement "count" based on button press
if(nLCDButtons == leftButton)
{
waitForRelease();
count--;
}
else if(nLCDButtons == rightButton)
{
waitForRelease();
count = 0;
}
break;
case 6:
//Display Seventh Choice
displayLCDCenteredString(0, "RedHang2");
displayLCDCenteredString(1, "< Enter >");
waitForPress();
//Increment or decrement "count" based on button press
if(nLCDButtons == leftButton)
{
waitForRelease();
count--;
}
else if(nLCDButtons == rightButton)
{
waitForRelease();
count = 0;
}
break;
case 7:
//Display Eighth Choice
displayLCDCenteredString(0, "BlueHang2");
displayLCDCenteredString(1, "< Enter >");
waitForPress();
//Increment or decrement "count" based on button press
if(nLCDButtons == leftButton)
{
waitForRelease();
count--;
}
else if(nLCDButtons == rightButton)
{
waitForRelease();
count = 0;
}
break;
default:
count = 0;
break;
}
}
}
When you hit that right button on the LCD after the 4th auton program, it’s just going to cycle back to the first one. You want to change that count = 0 to count++ for case 3 to case 6. Don’t change it for case 7 because you want to cycle back to case 0.
void pre_auton()
{
SetDriveEncoder (0);
//------------- Beginning of User Interface Code ---------------
//Clear LCD
clearLCDLine(0);
clearLCDLine(1);
//Loop while center button is not pressed
while(nLCDButtons != centerButton)
{
//Switch case that allows the user to choose from 4 different options
switch(count){
case 0:
//Display first choice
displayLCDCenteredString(0, "RedMiddle1");
displayLCDCenteredString(1, "< Enter >");
waitForPress();
//Increment or decrement "count" based on button press
if(nLCDButtons == leftButton)
{
waitForRelease();
count = 3;
}
else if(nLCDButtons == rightButton)
{
waitForRelease();
count++;
}
break;
case 1:
//Display second choice
displayLCDCenteredString(0, "BlueMiddle1");
displayLCDCenteredString(1, "< Enter >");
waitForPress();
//Increment or decrement "count" based on button press
if(nLCDButtons == leftButton)
{
waitForRelease();
count--;
}
else if(nLCDButtons == rightButton)
{
waitForRelease();
count++;
}
break;
case 2:
//Display third choice
displayLCDCenteredString(0, "RedMiddle2");
displayLCDCenteredString(1, "< Enter >");
waitForPress();
//Increment or decrement "count" based on button press
if(nLCDButtons == leftButton)
{
waitForRelease();
count--;
}
else if(nLCDButtons == rightButton)
{
waitForRelease();
count++;
}
break;
case 3:
//Display fourth choice
displayLCDCenteredString(0, "BlueMiddle2");
displayLCDCenteredString(1, "< Enter >");
waitForPress();
//Increment or decrement "count" based on button press
if(nLCDButtons == leftButton)
{
waitForRelease();
count--;
}
else if(nLCDButtons == rightButton)
{
waitForRelease();
count = ++;
}
break;
case 4:
//Display Fifth Choice
displayLCDCenteredString(0, "RedHang1");
displayLCDCenteredString(1, "< Enter >");
waitForPress();
//Increment or decrement "count" based on button press
if(nLCDButtons == leftButton)
{
waitForRelease();
count--;
}
else if(nLCDButtons == rightButton)
{
waitForRelease();
count = ++;
}
break;
case 5:
//Display Sixth Choice
displayLCDCenteredString(0, "BlueHang1");
displayLCDCenteredString(1, "< Enter >");
waitForPress();
//Increment or decrement "count" based on button press
if(nLCDButtons == leftButton)
{
waitForRelease();
count--;
}
else if(nLCDButtons == rightButton)
{
waitForRelease();
count = ++;
}
break;
case 6:
//Display Seventh Choice
displayLCDCenteredString(0, "RedHang2");
displayLCDCenteredString(1, "< Enter >");
waitForPress();
//Increment or decrement "count" based on button press
if(nLCDButtons == leftButton)
{
waitForRelease();
count--;
}
else if(nLCDButtons == rightButton)
{
waitForRelease();
count = ++;
}
break;
case 7:
//Display Eighth Choice
displayLCDCenteredString(0, "BlueHang2");
displayLCDCenteredString(1, "< Enter >");
waitForPress();
//Increment or decrement "count" based on button press
if(nLCDButtons == leftButton)
{
waitForRelease();
count--;
}
else if(nLCDButtons == rightButton)
{
waitForRelease();
count = 0;
}
break;
default:
count = 0;
break;
}
}
}
But now I get a bunch of errors one says unmatched left brace at void pre_auton(), an unmatched left brace after the while loop, an unmatched left brace at switch (cont){, and an unmatched left brace after the else if in case three. I have checked all of the curly braces and it looks to me that each of them as a match, am I wrong?
About halfway down, you start using this illegal expression:
count = ++;
Here it is fixed:
void pre_auton()
{
SetDriveEncoder(0);
//------------- Beginning of User Interface Code ---------------
//Clear LCD
clearLCDLine(0);
clearLCDLine(1);
//Loop while center button is not pressed
while (nLCDButtons != centerButton)
{
//Switch case that allows the user to choose from 4 different options
switch (count){
case 0:
//Display first choice
displayLCDCenteredString(0, "RedMiddle1");
displayLCDCenteredString(1, "< Enter >");
waitForPress();
//Increment or decrement "count" based on button press
if (nLCDButtons == leftButton)
{
waitForRelease();
count = 3;
}
else if (nLCDButtons == rightButton)
{
waitForRelease();
count++;
}
break;
case 1:
//Display second choice
displayLCDCenteredString(0, "BlueMiddle1");
displayLCDCenteredString(1, "< Enter >");
waitForPress();
//Increment or decrement "count" based on button press
if (nLCDButtons == leftButton)
{
waitForRelease();
count--;
}
else if (nLCDButtons == rightButton)
{
waitForRelease();
count++;
}
break;
case 2:
//Display third choice
displayLCDCenteredString(0, "RedMiddle2");
displayLCDCenteredString(1, "< Enter >");
waitForPress();
//Increment or decrement "count" based on button press
if (nLCDButtons == leftButton)
{
waitForRelease();
count--;
}
else if (nLCDButtons == rightButton)
{
waitForRelease();
**count++**;
}
break;
case 3:
//Display fourth choice
displayLCDCenteredString(0, "BlueMiddle2");
displayLCDCenteredString(1, "< Enter >");
waitForPress();
//Increment or decrement "count" based on button press
if (nLCDButtons == leftButton)
{
waitForRelease();
count--;
}
else if (nLCDButtons == rightButton)
{
waitForRelease();
**count++**;
}
break;
case 4:
//Display Fifth Choice
displayLCDCenteredString(0, "RedHang1");
displayLCDCenteredString(1, "< Enter >");
waitForPress();
//Increment or decrement "count" based on button press
if (nLCDButtons == leftButton)
{
waitForRelease();
count--;
}
else if (nLCDButtons == rightButton)
{
waitForRelease();
**count++**;
}
break;
case 5:
//Display Sixth Choice
displayLCDCenteredString(0, "BlueHang1");
displayLCDCenteredString(1, "< Enter >");
waitForPress();
//Increment or decrement "count" based on button press
if (nLCDButtons == leftButton)
{
waitForRelease();
count--;
}
else if (nLCDButtons == rightButton)
{
waitForRelease();
**count++**;
}
break;
case 6:
//Display Seventh Choice
displayLCDCenteredString(0, "RedHang2");
displayLCDCenteredString(1, "< Enter >");
waitForPress();
//Increment or decrement "count" based on button press
if (nLCDButtons == leftButton)
{
waitForRelease();
count--;
}
else if (nLCDButtons == rightButton)
{
waitForRelease();
**count++**;
}
break;
case 7:
//Display Eighth Choice
displayLCDCenteredString(0, "BlueHang2");
displayLCDCenteredString(1, "< Enter >");
waitForPress();
//Increment or decrement "count" based on button press
if (nLCDButtons == leftButton)
{
waitForRelease();
count--;
}
else if (nLCDButtons == rightButton)
{
waitForRelease();
count = 0;
}
break;
default:
count = 0;
break;
}
}
}
I haven’t installed ROBOTC since I upgraded my computer, so I can’t double check compilation but that was a major issue that screamed error.
