19 lines
526 B
Rust
19 lines
526 B
Rust
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const SRAM_LOWER: usize = 0x2000_0000;
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const SRAM_UPPER: usize = 0x3000_0000;
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/// Does this slice reside entirely within RAM?
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pub(crate) fn slice_in_ram(slice: &[u8]) -> bool {
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let ptr = slice.as_ptr() as usize;
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ptr >= SRAM_LOWER && (ptr + slice.len()) < SRAM_UPPER
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}
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/// Return an error if slice is not in RAM.
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#[cfg(not(feature = "51"))]
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pub(crate) fn slice_in_ram_or<T>(slice: &[u8], err: T) -> Result<(), T> {
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if slice.len() == 0 || slice_in_ram(slice) {
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Ok(())
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} else {
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Err(err)
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}
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}
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