Kinetis NMI pin as normal GPIO

[hanisamara]

Hello, 

i am trying to use PTB4/NMI pin on the KEA128 as normal GPIO. During debug it is still Low but after reset it remains High. i configured the NMI bit in SIM_SOPT0 to 0: SIM_SOPT0 &= ~(SIM_SOPT0_NMIE_MASK); /* set NMI pin as normal GPIO (PTB4) */ 

after that i declare the pin as output and set it to low. 

did i miss any thing?

Best regards, 

Hani

[Alexis_A · Accepted solution]

Dear hanisamara‌,

Please check the following post:

https://community.nxp.com/message/921860

I think this could help you with this issue.

Best Regards,

Alexis Andalon