stm32-device-signature embassy port

embassy-stm32/Cargo.toml

@@ -80,6 +80,7 @@ defmt = ["dep:defmt", "bxcan/unstable-defmt", "embassy-sync/defmt", "embassy-exe
 memory-x = ["stm32-metapac/memory-x"]
 subghz = []
 exti = []
+device-signature = []
 
 # Enables additional driver features that depend on embassy-time
 time = ["dep:embassy-time"]

embassy-stm32/src/device_signature.rs

@@ -0,0 +1,118 @@
+// https://github.com/stm32-rs/stm32-device-signature
+// [package]
+// name = "stm32-device-signature"
+// version = "0.3.3"
+// authors = ["Vadim Kaushan <admin@disasm.info>"]
+// license = "MIT OR Apache-2.0"
+//! This module provides a way to access Device electronic signature
+//! items on STM32 microcontrollers.
+//!
+//! You need to pass one of the features in order to use this crate:
+//! * `stm32f0`
+//! * `stm32f1`
+//! * `stm32f2`
+//! * `stm32f3`
+//! * `stm32f4`
+//! * `stm32f72x`
+//! * `stm32f73x`
+//! * `stm32f76x`
+//! * `stm32f77x`
+//! * `stm32g0`
+//! * `stm32h72x`
+//! * `stm32h73x`
+//! * `stm32h74x`
+//! * `stm32h75x`
+//! * `stm32h7ax`
+//! * `stm32h7bx`
+//! * `stm32l0`
+//! * `stm32l4`
+//! * `stm32wb5x`
+
+use cortex_m::interrupt;
+
+#[cfg(any(stm32f0, stm32f3))]
+mod pointers {
+    pub const DEVICE_ID_PTR: *const u8 = 0x1FFF_F7AC as _;
+    pub const FLASH_SIZE_PTR: *const u16 = 0x1FFF_F7CC as _;
+}
+
+#[cfg(stm32f1)]
+mod pointers {
+    pub const DEVICE_ID_PTR: *const u8 = 0x1FFF_F7E8 as _;
+    pub const FLASH_SIZE_PTR: *const u16 = 0x1FFF_F7E0 as _;
+}
+
+#[cfg(any(stm32f2, stm32f4))]
+mod pointers {
+    pub const DEVICE_ID_PTR: *const u8 = 0x1FFF_7A10 as _;
+    pub const FLASH_SIZE_PTR: *const u16 = 0x1FFF_7A22 as _;
+}
+
+#[cfg(any(stm32f72x, stm32f73x))]
+mod pointers {
+    pub const DEVICE_ID_PTR: *const u8 = 0x1FF0_7A10 as _;
+    pub const FLASH_SIZE_PTR: *const u16 = 0x1FF0_7A22 as _;
+}
+
+#[cfg(any(stm32f76x, stm32f77x))]
+mod pointers {
+    pub const DEVICE_ID_PTR: *const u8 = 0x1FF0_F420 as _;
+    pub const FLASH_SIZE_PTR: *const u16 = 0x1FF0_F442 as _;
+}
+
+#[cfg(any(stm32g0, stm32l4, stm32wb5x))]
+mod pointers {
+    pub const DEVICE_ID_PTR: *const u8 = 0x1FFF_7590 as _;
+    pub const FLASH_SIZE_PTR: *const u16 = 0x1FFF_75E0 as _;
+}
+
+#[cfg(any(stm32h72x, stm32h73x, stm32h74x, stm32h75x))]
+mod pointers {
+    pub const DEVICE_ID_PTR: *const u8 = 0x1FF1_E800 as _;
+    pub const FLASH_SIZE_PTR: *const u16 = 0x1FF1_E880 as _;
+}
+
+#[cfg(any(stm32h7ax, stm32h7bx))]
+mod pointers {
+    pub const DEVICE_ID_PTR: *const u8 = 0x08FF_F800 as _;
+    pub const FLASH_SIZE_PTR: *const u16 = 0x08FF_F80C as _;
+}
+
+#[cfg(stm32l0)]
+mod pointers {
+    pub const DEVICE_ID_PTR: *const u8 = 0x1FF8_0050 as _;
+    pub const FLASH_SIZE_PTR: *const u16 = 0x1FF8_007C as _;
+}
+
+use pointers::*;
+
+/// Returns a 12-byte unique device ID
+pub fn device_id() -> &'static [u8; 12] {
+    unsafe { &*DEVICE_ID_PTR.cast::<[u8; 12]>() }
+}
+
+/// Returns a string with a hex-encoded unique device ID
+pub fn device_id_hex() -> &'static str {
+    static mut DEVICE_ID_STR: [u8; 24] = [0; 24];
+
+    unsafe {
+        if DEVICE_ID_STR.as_ptr().read_volatile() == 0 {
+            interrupt::free(|_| {
+                let hex = b"0123456789abcdef";
+                for (i, b) in device_id().iter().enumerate() {
+                    let lo = b & 0xf;
+                    let hi = (b >> 4) & 0xfu8;
+                    DEVICE_ID_STR[i * 2] = hex[hi as usize];
+                    DEVICE_ID_STR[i * 2 + 1] = hex[lo as usize];
+                }
+            });
+        }
+
+        core::str::from_utf8_unchecked(&DEVICE_ID_STR)
+    }
+}
+
+/// Returns the Flash memory size of the device in Kbytes
+pub fn flash_size_kb() -> u16 {
+    unsafe { *FLASH_SIZE_PTR }
+}

embassy-stm32/src/lib.rs

@@ -67,6 +67,10 @@ pub mod wdg;
 #[cfg(feature = "subghz")]
 pub mod subghz;
 
+/// Provides access to unique device ID and flash size in kb
+#[cfg(feature = "device-signature")]
+pub mod device_signature;
+
 // This must go last, so that it sees all the impl_foo! macros defined earlier.
 pub(crate) mod _generated {
     #![allow(dead_code)]

stm32-data

@@ -1 +1 @@
-Subproject commit 66252982939014e94fc4a1b7423c30c3d108ae0b
+Subproject commit 14a448c318192fe9da1c95a4de1beb4ec4892f1c