ir sensor Board ??????????????????????

[AdmiralAllen]

Originally Posted by Alan Anderson

Yes. The valid range of values for a pwm output is 0-254. Since the pwm "variables" in the code are of type unsigned char, trying to set one to 256 will actually end up with it set to zero.



You'll need to be a lot more specific about where you put the code. The filename is not really important. What matters is the name of the function in which it appears: Process_Data_From_Master_uP(), Default_Routine(), Process_Data_From_Local_IO(), etc.

no......the maximum pwm value is 256......its an extrema

[Jon Stratis]

Originally Posted by AdmiralAllen

no......the maximum pwm value is 256......its an extrema

Actually, the maximum PWM value is 255, or 2^8 - 1, which is the maximum value that can be held in 8 bits of memory - the size of an unsigned char. Going above this will cause an overflow problem, where you'll loop around and start at 0 again.

[darkdwarven]

We were trying to find a way to program the Robot Cotroller so that when any of 2 inputs receive a signal, it will leave the autonomous code and enter a 'maual' autonomous code. The manual autonomous code would work based on 2 if statements that loop back to the other. The if statements would either say left or right and cotinue until our timer value ran out. Our code in the attached file, only makes the motors pulse for some other direction or go to one and continue straight without any further response. Any problems with our coding? Also does anyone know an easier way of accomplishing the same tasks?


Thanks always for the help,
Team 2348