Hello,
I had a quick question about the PWM Modules. How would I know when I have to choose GenA or GenB in Generator#? Is it based on the output port# I will using?
Example, I want to use PORTA6.
Would I use Module1, PWMGenerator1, GenA?
Or let's say, PORTE5.
Module0, PWMGenerator2, GenB?
Hi,
Please refer to the datasheet PWM signal list and PWM Module Diagram. As you can see for PA6, you would be using PWM Module 1 and Generation 1 so that PWM2 signal is output on PA6 pin.
is it possible to use either A or B generator with either generator#? or as they specially assigned by the port output?
I'm not clear with what you mean. You can use PWM generator 1 to control pwm2 and pwm3 outputs. What are the A or B you are referring? There is no A or B generator on the diagram. Don't get confused with the A or B comparators.
i.e.
Load = 16000
Cmpa= 15999
Your load value and compare value is only one cycle off and you are will get a pulse. Let's say the PWM output is high when the load value is 16000. Depending on what your chosen action to take (e.g. drive low when a compare match), when the counter counts down to 15999 which is only one cycle, the PWM output will change to low. This is why you see you see a tiny pulse.
