64 lines
2.3 KiB
Rust
64 lines
2.3 KiB
Rust
//! Clock System
|
|
|
|
use core::cmp;
|
|
use pac::{cs, CS};
|
|
|
|
use crate::time::Hertz;
|
|
|
|
|
|
/// Extension trait that constrains the `CS` peripheral
|
|
pub trait CsExt {
|
|
/// Constrains the `CS` peripheral so that it plays nicely with other abstractions
|
|
fn constrain(self) -> Cs;
|
|
}
|
|
|
|
impl CsExt for CS {
|
|
fn constrain(self) -> Cs {
|
|
Cs {
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
+--------+-----------------------+---------------+-------------------------------------+
|
|
| Clock | Default Clock Source | Default Clock | Description |
|
|
| | | Frequency | |
|
|
+========+=======================+===============+=====================================+
|
|
| MCLK | DCO | 3 MHz | Master Clock - Sources CPU and |
|
|
| | | | peripherals |
|
|
+--------+-----------------------+---------------+-------------------------------------+
|
|
| HSMCLK | DCO | 3 MHz | Subsystem Master Clock - Sources |
|
|
| | | | peripherals |
|
|
+--------+-----------------------+---------------+-------------------------------------+
|
|
| SMCLK | DCO | 3 MHz | Low-speed subsystem master clock - |
|
|
| | | | Sources peripherals |
|
|
+--------+-----------------------+---------------+-------------------------------------+
|
|
| ACLK | LFXT (or REFO if no | 32.768 kHz | Auxiliary clock - Sources |
|
|
| | crystal present) | | peripherals |
|
|
+--------+-----------------------+---------------+-------------------------------------+
|
|
| BCLK | LFXT (or REFO if no | 32.768 kHz | Low-speed backup domain clock - |
|
|
| | crystal present) | | Sources LPM peripherals |
|
|
+--------+-----------------------+---------------+-------------------------------------+
|
|
*/
|
|
|
|
pub struct Cs {
|
|
|
|
}
|
|
|
|
/// Frozen clock frequencies
|
|
///
|
|
/// This value holds the current clocks frequencies and indicates that they can
|
|
/// no longer be changed
|
|
#[derive(Clone, Copy)]
|
|
pub struct Clocks {
|
|
sysclk: Hertz,
|
|
}
|
|
|
|
impl Clocks {
|
|
/// Returns the system (core) frequency
|
|
pub fn sysclk(&self) -> Hertz {
|
|
self.sysclk
|
|
}
|
|
}
|