Hi, i'm fai I learning stm32f103 programming, and I'm confuse, I want using
void GPIO_PinLockConfig(GPIO_TypeDef* GPIOx, u16 GPIO_Pin)
. How to unlocking pin after I using it? please help me.. thanks
Note that this is a specific question about an ST product - it has nothing to do with Keil or ARM.
So you would probably be better asking ST.
What does the stm32f103 documentation tell you? and/or the documentation for the GPIO_PinLockConfig() function ?
And is not so different from many other questions posted on this forum.
Section 9.2.7 of the RM0008 reference manual states:
When the LOCK sequence has been applied on a port bit it is no longer possible to modify the value of the port bit until the next reset.
There is no unlock. You cannot modify a port bit once it has been locked until you do a reset. (See Section 9.2.7 of the RM0008 reference manual)
Thanks for the answer, I think in stm32f103 have a gpio unlock pin function, in fact not have. I think that because I have use nuvoton nuc100 series cortex m0, they have gpio lock & unlock pin function. OK thanks all, I'm understand now.