Keeping PA15 low during the init

[Akshit Singhal]

Hi community,

I'm using STM32F303RE, in that I'm using PA15 as a GPIO which is connected to a Relay, but I recently found out that the PA15 is a JTDI pin which is being pulled up internally, so whenever the STM32 resets, it gets high and after GPIO_init is executed it goes lows. It's causing relay trigger.

Kindly help!

Regards

Akshit Singhal

[TDK]

You can't change the behavior of PA15 on reset. Use a different pin with an external pulldown.