I'm using the HRPWM example code (F2803x - v126) on my F28035 development board. There is a pwm noise signal on some of the unused gpio pins. How do I get rid of this noise?
First things I would suggest:
If the pin is an input, enable the pull up resistor. If this doesn't work, set it as an output and drive it high or low. There's also a possibility it is just your scope lead picking up the noise from the neighboring pin and it is not actually present on the pin itself.
I can't imagine there is a significant amount of noise on the pin. What is the concern if the IO is not being used?
Thank you for your response. I implemented your suggestions, but unfortunately the problem remains.For simplicity, I only configured hrpwm1 (i.e. gpio0 and gpio1).
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