daylily
19 lines
529 B
Rust
19 lines
529 B
Rust
use base64::prelude::*;
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use embassy_stm32::uid::uid;
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use embassy_sync::once_lock::OnceLock;
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pub fn uid_base64() -> &'static str {
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unsafe { core::str::from_utf8_unchecked(uid_base64_bytes()) }
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}
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pub fn uid_base64_bytes() -> &'static [u8; 16] {
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static UID_BASE64: OnceLock<[u8; 16]> = OnceLock::new();
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UID_BASE64.get_or_init(|| {
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let mut b64 = [0u8; 16];
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BASE64_STANDARD
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.encode_slice(uid(), &mut b64)
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.expect("12-byte UID encoded to 16 bytes of base64");
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b64
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})
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}
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