MSP430FR2355: TB1.1 compare output in conflict with COMP0 at P2.0 pin

Tool/software:

Hi,

I´ve got a project where measure a frequency at P1.0 with the comparator activated and output another frequency at P2.0.

When no frequency is present the output looks like that: P2.0 is yellow and P1.0 is green.

This is ok. It outputs 100 Hz as set.

When I start feeding a sinus 100 Hz into P1.0 the output frequency at P2.0 starts modulating the pulse width.

I think that the comparator threshold is setting when to toggle between high and low. I´ve detached the comparator from P2.0 by setting the correct PXSEL bits. But maybe I`m doing something wrong here

I`ve broken done the problem in this project which can be run on a MSP-EXP430FR2355 Evalboard to check it on your end. You have to pull the jumper on P1.0 to disconnect it from the LED.

Fout_MSP430Fr2355.zip

Thanks a lot!

Best regards

Steffen