The oddest error

[code_lacky]

the battery was reading 13 point something volts with the multimeter (if that is what it is called) and it could not have been battery because we switched back the code to the plain 3.0 and it worked fine

[Alex.Norton]

The reason for saying the battery was because the motors might be pulling different numbers of amps with the different code. Some code may be putting a much greater strain on the motors since it is holding an arm in a particular position and this is much more likely to be the encoder code and not the original code.

However, since apparently the battery is fine, I can't see a reason for this problem. We have had very similar things happen to us in the past but it has always been fixed with a simple battery change. One thing you might check is the resistance of the battery with your multimeter cause if the battery has a bad cell then when the battery has no load it looks fully charged but when put in the bot will drop very low very quick.

If that isn't it then search me, I haven't done a huge amount of programing and certainly don't know the controller as well as I could.

[Kevin Watson]

Originally Posted by code_lacky

the battery was reading 13 point something volts with the multimeter (if that is what it is called) and it could not have been battery because we switched back the code to the plain 3.0 and it worked fine

There was a bug discovered with the PIC18F8722 based robot controllers used since 2006. One of the symptoms of the bug is that the voltage will read 8.2 or 8.3 volts regardless of the actual battery voltage. Can you please check to see if this is happening with your controller? Would it be possible for you to zip up your build directory and send it to me?

-Kevin

[Jon236]

I have also been having odd errors. The 'Program State' light stays lit and the program doesn't run. The voltage is NOT 8.2.

What is odd is that the only apparent difference between a project that works and the project that doesn't is that I am using a new project name (Sensors2008 vs ifi_frc).

I have zipped the files and a diff.txt file I generated. There are actually 113 differences, but I can't seem to see any consistency.

However, in the ifi_frc project, I am able to get the encoder, gyro, ultrasonic detector and Banner IR switch all playing nicely together!

Thank you Kevin.

[Kevin Watson]

Originally Posted by Jon236

What is odd is that the only apparent difference between a project that works and the project that doesn't is that I am using a new project name (Sensors2008 vs ifi_frc).

The difference might be that the build options aren't the same across the two projects.

-Kevin

[Kevin Watson]

Originally Posted by Jon236

What is odd is that the only apparent difference between a project that works and the project that doesn't is that I am using a new project name (Sensors2008 vs ifi_frc).

Jon,

The problem is that you didn't add ifi_frc.c to the Sensors2008 project.

Edit: I forgot to mention that you also need to build using the large code and data model.

-Kevin

[Jon236]

Thank you! It worked! Also, should we use multi-bank stacks?