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slcr: with_slcr() for unlock/lock

This commit is contained in:
Astro 2019-05-21 01:30:17 +02:00
parent 351d18c10f
commit 5d02fe5c95
2 changed files with 52 additions and 2 deletions

View File

@ -1,5 +1,5 @@
//! Interface to peripheral registers akin to the code that svd2rust //! Type-safe interface to peripheral registers akin to the code that
//! generates. //! svd2rust generates.
#![allow(unused)] #![allow(unused)]
use volatile_register::{RO, WO, RW}; use volatile_register::{RO, WO, RW};

View File

@ -8,6 +8,56 @@ pub enum PllSource {
DdrPll = 0b11, DdrPll = 0b11,
} }
pub fn with_slcr<F: FnMut() -> R, R>(mut f: F) -> R {
unsafe { SlcrUnlock::new() }.unlock();
let r = f();
unsafe { SlcrLock::new() }.lock();
r
}
register!(slcr_lock, SlcrLock, WO, u32);
register_bits!(slcr_lock, lock_key, u16, 0, 15);
register_at!(SlcrLock, 0xF8000004, new);
impl SlcrLock {
pub fn lock(&self) {
unsafe {
self.write(
Self::zeroed()
.lock_key(0x767B)
);
}
}
}
register!(slcr_unlock, SlcrUnlock, WO, u32);
register_bits!(slcr_unlock, unlock_key, u16, 0, 15);
register_at!(SlcrUnlock, 0xF8000008, new);
impl SlcrUnlock {
pub fn unlock(&self) {
unsafe {
self.write(
Self::zeroed()
.unlock_key(0xDF0D)
);
}
}
}
register!(aper_clk_ctrl, AperClkCtrl, RW, u32);
register_bit!(aper_clk_ctrl, uart1_cpu_1xclkact, 21);
register_bit!(aper_clk_ctrl, uart0_cpu_1xclkact, 20);
register_at!(AperClkCtrl, 0xF800012C, new);
impl AperClkCtrl {
pub fn enable_uart0(&self) {
self.modify(|_, w| w.uart0_cpu_1xclkact(true));
}
pub fn enable_uart1(&self) {
self.modify(|_, w| w.uart1_cpu_1xclkact(true));
}
}
register!(uart_clk_ctrl, UartClkCtrl, RW, u32); register!(uart_clk_ctrl, UartClkCtrl, RW, u32);
register_bit!(uart_clk_ctrl, clkact0, 0); register_bit!(uart_clk_ctrl, clkact0, 0);
register_bit!(uart_clk_ctrl, clkact1, 1); register_bit!(uart_clk_ctrl, clkact1, 1);