31 lines
915 B
Rust
31 lines
915 B
Rust
use core::ptr::{read_volatile, write_volatile};
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const TIMER_CONTROL: *mut u32 = (0x02000020) as *mut u32;
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const TIMER_LOAD : *mut u32 = (0x02000024) as *mut u32;
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const TIMER_RELOAD : *mut u32 = (0x02000028) as *mut u32;
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const TIMER_CURRENT: *mut u32 = (0x0200002C) as *mut u32;
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pub fn timer_enable() {
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unsafe {
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let bitmasked = read_volatile(TIMER_CONTROL) & (!0x11) as u32;
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write_volatile(TIMER_CONTROL, (0x11 | bitmasked) as u32);
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}
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}
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pub fn timer_disable() {
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unsafe {
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let bitmasked = read_volatile(TIMER_CONTROL) & (!0x11) as u32;
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write_volatile(TIMER_CONTROL, (0x00 | bitmasked) as u32);
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}
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}
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pub fn timer_set(load: u32, reload: u32) {
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unsafe {
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write_volatile(TIMER_LOAD, load as u32);
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write_volatile(TIMER_RELOAD, reload as u32);
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}
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}
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pub fn timer_get() -> u32 {
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unsafe {
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return read_volatile(TIMER_CURRENT) as u32
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}
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}
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