Macro r3_port_arm_m::use_systick_tickful

macro_rules! use_systick_tickful {
    (unsafe impl PortTimer for $Traits:ty) => { ... };
}

Attach the tickful implementation of PortTimer that is based on SysTick to a given kernel trait type.

You should also do the following:

• Implement SysTickOptions manually.
• Call $Traits::configure_systick() in your configuration function. See the following example.

r3_port_arm_m::use_systick_tickful!(unsafe impl PortTimer for SystemTraits);

impl r3_port_arm_m::SysTickOptions for SystemTraits {
   // SysTick = AHB/8, AHB = HSI (internal 16-MHz RC oscillator)
    const FREQUENCY: u64 = 2_000_000;
}

const fn configure_app(b: &mut r3_kernel::Cfg<SystemTraits>) -> Objects {
    SystemTraits::configure_systick(b);
    /* ... */
}

Safety

• The target must really be a bare-metal Arm-M environment.