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nrf: return ptr in slice_ptr_parts

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This commit is contained in:
Dario Nieuwenhuis 2022-01-19 15:59:06 +01:00
parent a607cf6142
commit b640c72092
1 changed files with 3 additions and 3 deletions
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6
embassy-nrf/src/util.rs
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@ -4,18 +4,18 @@ const SRAM_LOWER: usize = 0x2000_0000;
const SRAM_UPPER: usize = 0x3000_0000; const SRAM_UPPER: usize = 0x3000_0000;
// TODO: replace transmutes with core::ptr::metadata once it's stable // TODO: replace transmutes with core::ptr::metadata once it's stable
pub(crate) fn slice_ptr_parts<T>(slice: *const [T]) -> (*const T, usize) {
pub(crate) fn slice_ptr_parts<T>(slice: *const [T]) -> (usize, usize) {
unsafe { mem::transmute(slice) } unsafe { mem::transmute(slice) }
} }
pub(crate) fn slice_ptr_parts_mut<T>(slice: *mut [T]) -> (usize, usize) { pub(crate) fn slice_ptr_parts_mut<T>(slice: *mut [T]) -> (*mut T, usize) {
unsafe { mem::transmute(slice) } unsafe { mem::transmute(slice) }
} }
/// Does this slice reside entirely within RAM? /// Does this slice reside entirely within RAM?
pub(crate) fn slice_in_ram<T>(slice: *const [T]) -> bool { pub(crate) fn slice_in_ram<T>(slice: *const [T]) -> bool {
let (ptr, len) = slice_ptr_parts(slice); let (ptr, len) = slice_ptr_parts(slice);
let ptr = ptr as usize;
ptr >= SRAM_LOWER && (ptr + len * core::mem::size_of::<T>()) < SRAM_UPPER ptr >= SRAM_LOWER && (ptr + len * core::mem::size_of::<T>()) < SRAM_UPPER
} }