A Cortex programming question for the oldheads

Programming Support
#1

Tell me what I’m missing here. This is the exact same code I’ve used for years to tankdrive a squarebot chassis

#pragma config(Motor,  port2,           leftDrive,     tmotorVex393_MC29, openLoop)
#pragma config(Motor,  port3,           rightDrive,    tmotorVex393_MC29, openLoop, reversed)
//*!!Code automatically generated by 'ROBOTC' configuration wizard               !!*//

task main()
{
while(1==1)
{
motor[port2] = vexRT[Ch3];
motor[port3] = vexRT[Ch2];
}
}

What it should do is left joystick controls left drive, right joystick controls right drive. What it does do is run both motors for 4 seconds and stops.

#2

I don’t see anything wrong with the code, perhaps code is not being downloaded to the cortex properly for some reason.

2 Likes
#3

I’ve written other programs (run motor for 1 second, stop) and they work fine. I’ve updated CPU and Cortex firmwares on the cortex, updated joystick firmware on the controller, used multiple joysticks, cortexes, and programming cables.
I’ve checked that I don’t have any other programs in background tabs.
I’ve set it to VEX Cortex 2.0 and to Natural Language PLTW.

I’m out of ideas as to why a historically simple, rock solid program is acting this way.

#4

I’ve seen this before where the download is something old. Dig in the cortex code directory for the .hex file and delete it. That will force the compile to happen.

#5

The only .hex file I could find there, VEX_Cortex_1056.hex, gives me the error message “FILE ACCESS DENIED You need permission from SYSTEM to make changes to this file”

#6

yea, don’t delete that one, it’s the RobotC firmware.

4 Likes
#7

I found a laptop with RobotC and was able to program using it. I guess my teacher desktop is just borked. Thanks to those who tried to help.

1 Like