add ptr to registerblock as associated constant

This commit introduces new associated constants to Core Peripherals.
(pointers to the register block)
This commit also adds a notice that 'ptr()' APIs will be deprecated in
v0.7.

Author: JOE1994

src/peripheral/mod.rs

@@ -237,7 +237,10 @@ impl CBP {
         }
     }
 
-    /// Returns a pointer to the register block
+    /// Pointer to the register block
+    pub const CBP_PTR: *const self::cbp::RegisterBlock = 0xE000_EF50 as *const _;
+
+    /// Returns a pointer to the register block (to be deprecated in 0.7)
     #[inline(always)]
     pub const fn ptr() -> *const self::cbp::RegisterBlock {
         0xE000_EF50 as *const _
@@ -262,7 +265,10 @@ pub struct CPUID {
 unsafe impl Send for CPUID {}
 
 impl CPUID {
-    /// Returns a pointer to the register block
+    /// Pointer to the register block
+    pub const CPUID_PTR: *const self::cpuid::RegisterBlock = 0xE000_ED00 as *const _;
+
+    /// Returns a pointer to the register block (to be deprecated in 0.7)
     #[inline(always)]
     pub const fn ptr() -> *const self::cpuid::RegisterBlock {
         0xE000_ED00 as *const _
@@ -286,7 +292,10 @@ pub struct DCB {
 unsafe impl Send for DCB {}
 
 impl DCB {
-    /// Returns a pointer to the register block
+    /// Pointer to the register block
+    pub const DCB_PTR: *const dcb::RegisterBlock = 0xE000_EDF0 as *const _;
+
+    /// Returns a pointer to the register block (to be deprecated in 0.7)
     #[inline(always)]
     pub const fn ptr() -> *const dcb::RegisterBlock {
         0xE000_EDF0 as *const _
@@ -310,7 +319,10 @@ pub struct DWT {
 unsafe impl Send for DWT {}
 
 impl DWT {
-    /// Returns a pointer to the register block
+    /// Pointer to the register block
+    pub const DWT_PTR: *const dwt::RegisterBlock = 0xE000_1000 as *const _;
+
+    /// Returns a pointer to the register block (to be deprecated in 0.7)
     #[inline(always)]
     pub const fn ptr() -> *const dwt::RegisterBlock {
         0xE000_1000 as *const _
@@ -335,7 +347,10 @@ unsafe impl Send for FPB {}
 
 #[cfg(not(armv6m))]
 impl FPB {
-    /// Returns a pointer to the register block
+    /// Pointer to the register block
+    pub const FPB_PTR: *const fpb::RegisterBlock = 0xE000_2000 as *const _;
+
+    /// Returns a pointer to the register block (to be deprecated in 0.7)
     #[inline(always)]
     pub const fn ptr() -> *const fpb::RegisterBlock {
         0xE000_2000 as *const _
@@ -361,7 +376,10 @@ unsafe impl Send for FPU {}
 
 #[cfg(any(has_fpu, target_arch = "x86_64"))]
 impl FPU {
-    /// Returns a pointer to the register block
+    /// Pointer to the register block
+    pub const FPU_PTR: *const fpu::RegisterBlock = 0xE000_EF30 as *const _;
+
+    /// Returns a pointer to the register block (to be deprecated in 0.7)
     #[inline(always)]
     pub const fn ptr() -> *const fpu::RegisterBlock {
         0xE000_EF30 as *const _
@@ -391,7 +409,10 @@ pub struct ICB {
 unsafe impl Send for ICB {}
 
 impl ICB {
-    /// Returns a pointer to the register block
+    /// Pointer to the register block
+    pub const ICB_PTR: *mut icb::RegisterBlock = 0xE000_E004 as *mut _;
+
+    /// Returns a pointer to the register block (to be deprecated in 0.7)
     #[inline(always)]
     pub const fn ptr() -> *mut icb::RegisterBlock {
         0xE000_E004 as *mut _
@@ -423,7 +444,10 @@ unsafe impl Send for ITM {}
 
 #[cfg(all(not(armv6m), not(armv8m_base)))]
 impl ITM {
-    /// Returns a pointer to the register block
+    /// Pointer to the register block
+    pub const ITM_PTR: *mut itm::RegisterBlock = 0xE000_0000 as *mut _;
+
+    /// Returns a pointer to the register block (to be deprecated in 0.7)
     #[inline(always)]
     pub const fn ptr() -> *mut itm::RegisterBlock {
         0xE000_0000 as *mut _
@@ -456,7 +480,10 @@ pub struct MPU {
 unsafe impl Send for MPU {}
 
 impl MPU {
-    /// Returns a pointer to the register block
+    /// Pointer to the register block
+    pub const MPU_PTR: *const mpu::RegisterBlock = 0xE000_ED90 as *const _;
+
+    /// Returns a pointer to the register block (to be deprecated in 0.7)
     #[inline(always)]
     pub const fn ptr() -> *const mpu::RegisterBlock {
         0xE000_ED90 as *const _
@@ -480,7 +507,10 @@ pub struct NVIC {
 unsafe impl Send for NVIC {}
 
 impl NVIC {
-    /// Returns a pointer to the register block
+    /// Pointer to the register block
+    pub const NVIC_PTR: *const nvic::RegisterBlock = 0xE000_E100 as *const _;
+
+    /// Returns a pointer to the register block (to be deprecated in 0.7)
     #[inline(always)]
     pub const fn ptr() -> *const nvic::RegisterBlock {
         0xE000_E100 as *const _
@@ -505,7 +535,10 @@ unsafe impl Send for SAU {}
 
 #[cfg(armv8m)]
 impl SAU {
-    /// Returns a pointer to the register block
+    /// Pointer to the register block
+    pub const SAU_PTR: *const sau::RegisterBlock = 0xE000_EDD0 as *const _;
+
+    /// Returns a pointer to the register block (to be deprecated in 0.7)
     #[inline(always)]
     pub const fn ptr() -> *const sau::RegisterBlock {
         0xE000_EDD0 as *const _
@@ -530,7 +563,10 @@ pub struct SCB {
 unsafe impl Send for SCB {}
 
 impl SCB {
-    /// Returns a pointer to the register block
+    /// Pointer to the register block
+    pub const SCB_PTR: *const scb::RegisterBlock = 0xE000_ED04 as *const _;
+
+    /// Returns a pointer to the register block (to be deprecated in 0.7)
     #[inline(always)]
     pub const fn ptr() -> *const scb::RegisterBlock {
         0xE000_ED04 as *const _
@@ -554,7 +590,10 @@ pub struct SYST {
 unsafe impl Send for SYST {}
 
 impl SYST {
-    /// Returns a pointer to the register block
+    /// Pointer to the register block
+    pub const SYST_PTR: *const syst::RegisterBlock = 0xE000_E010 as *const _;
+
+    /// Returns a pointer to the register block (to be deprecated in 0.7)
     #[inline(always)]
     pub const fn ptr() -> *const syst::RegisterBlock {
         0xE000_E010 as *const _
@@ -579,7 +618,10 @@ unsafe impl Send for TPIU {}
 
 #[cfg(not(armv6m))]
 impl TPIU {
-    /// Returns a pointer to the register block
+    /// Pointer to the register block
+    pub const TPIU_PTR: *const tpiu::RegisterBlock = 0xE004_0000 as *const _;
+
+    /// Returns a pointer to the register block (to be deprecated in 0.7)
     #[inline(always)]
     pub const fn ptr() -> *const tpiu::RegisterBlock {
         0xE004_0000 as *const _