MCX Microcontrollersのトピックcannot toggle PTA3 MC9S08SH32

cannot toggle PTA3 MC9S08SH32

anandhram1988 — Mon, 30 Jun 2025 15:49:34 GMT

hi, i could not toggle PTA3 pin for MC9S08SH32 , even i toggle low , it always gives output voltage as high

config below

PTADD is set to0x08;

Re: cannot toggle PTA3 MC9S08SH32

Pablo_Ramos — Mon, 30 Jun 2025 17:00:56 GMT

Hi @anandhram1988,

The first step is to set the pin as an output in the Port A Data Direction Register (PTADD).

To change the logic level, you need to write to the Port A Data Register (PTAD).

When you write a value to the PTAD register for PTA3, are you able to see the changes on the pin?

Best Regards,
Pablo

Re: cannot toggle PTA3 MC9S08SH32

anandhram1988 — Tue, 01 Jul 2025 11:29:34 GMT

Hi, i tried the above steps still the issue is same is there any other steps or reasons but for port B i can able to get the voltage based on toggling