Macro cortex_m_rt::pre_init

macro_rules! pre_init {
    ($handler:path) => { ... };
}

Macro to set the function to be called at the beginning of the reset handler.

The function must have the signature of unsafe fn().

The function passed will be called before static variables are initialized. Any access of static variables will result in undefined behavior.

Examples

pre_init!(foo::bar);

mod foo {
    pub unsafe fn bar() {
        // do something here
    }
}