PTA2/PTA3 as GPIO Output on KEA128

[zhangzhongjun]

The chip is powered by 3.3V, so the pins are connected to a 3.3V 4.7K resistor for pull-up output. You can observe the changes in the value of the GPIOA_PDOR register. However, using a multimeter, we cannot measure the changes in the high and low levels of PTA3. Have I overlooked any configuration?

FRDM-KEAZ128 

Thanks,

 

 

[carlos_o]

Hi @zhangzhongjun 

Thanks for your post.

I'm understanding that you have problems when you try to toggle one pin at Port A. Am I understating correctly?  Could you share more details about your issue please?