Hi, I am using TM4C1230, i want to make NMI pin PF0 as GPIO pin can any tell me how to do it. as i went through the datasheet got to know that we need to unlock it. and i used these steps to do it. HWREG(GPIO_PORTD_BASE + GPIO_O_LOCK) = GPIO_LOCK_KEY_DD; HWREG(GPIO_PORTD_BASE + GPIO_O_CR) = 0x80; HWREG(GPIO_PORTD_BASE + GPIO_O_AFSEL) |= 0x400; HWREG(GPIO_PORTD_BASE + GPIO_O_DEN) |= 0x80; HWREG(GPIO_PORTD_BASE + GPIO_O_LOCK) = 0;