1 files changed, 0 insertions, 216 deletions
diff --git a/src/peripheral/itm.rs b/src/peripheral/itm.rs
deleted file mode 100644
index 7291ae0..0000000
--- a/src/peripheral/itm.rs
+++ /dev/null
@@ -1,216 +0,0 @@
-//! Instrumentation Trace Macrocell
-//!
-//! *NOTE* Not available on Armv6-M and Armv8-M Baseline.
-
-use core::cell::UnsafeCell;
-use core::ptr;
-
-use volatile_register::{RO, RW, WO};
-
-use crate::peripheral::ITM;
-use bitfield::bitfield;
-
-#[cfg(feature = "serde")]
-use serde::{Deserialize, Serialize};
-
-/// Register block
-#[repr(C)]
-pub struct RegisterBlock {
-    /// Stimulus Port
-    pub stim: [Stim; 256],
-    reserved0: [u32; 640],
-    /// Trace Enable
-    pub ter: [RW<u32>; 8],
-    reserved1: [u32; 8],
-    /// Trace Privilege
-    pub tpr: RW<u32>,
-    reserved2: [u32; 15],
-    /// Trace Control
-    pub tcr: RW<Tcr>,
-    reserved3: [u32; 75],
-    /// Lock Access
-    pub lar: WO<u32>,
-    /// Lock Status
-    pub lsr: RO<u32>,
-}
-
-bitfield! {
-    /// Trace Control Register.
-    #[repr(C)]
-    #[derive(Copy, Clone)]
-    pub struct Tcr(u32);
-    itmena, set_itmena: 0;
-    tsena, set_tsena: 1;
-    syncena, set_synena: 2;
-    txena, set_txena: 3;
-    swoena, set_swoena: 4;
-    u8, tsprescale, set_tsprescale: 9, 8;
-    u8, gtsfreq, set_gtsfreq: 11, 10;
-    u8, tracebusid, set_tracebusid: 22, 16;
-    busy, _: 23;
-}
-
-/// Stimulus Port
-pub struct Stim {
-    register: UnsafeCell<u32>,
-}
-
-impl Stim {
-    /// Writes an `u8` payload into the stimulus port
-    #[inline]
-    pub fn write_u8(&mut self, value: u8) {
-        unsafe { ptr::write_volatile(self.register.get() as *mut u8, value) }
-    }
-
-    /// Writes an `u16` payload into the stimulus port
-    #[inline]
-    pub fn write_u16(&mut self, value: u16) {
-        unsafe { ptr::write_volatile(self.register.get() as *mut u16, value) }
-    }
-
-    /// Writes an `u32` payload into the stimulus port
-    #[inline]
-    pub fn write_u32(&mut self, value: u32) {
-        unsafe { ptr::write_volatile(self.register.get(), value) }
-    }
-
-    /// Returns `true` if the stimulus port is ready to accept more data
-    #[cfg(not(armv8m))]
-    #[inline]
-    pub fn is_fifo_ready(&self) -> bool {
-        unsafe { ptr::read_volatile(self.register.get()) & 0b1 == 1 }
-    }
-
-    /// Returns `true` if the stimulus port is ready to accept more data
-    #[cfg(armv8m)]
-    #[inline]
-    pub fn is_fifo_ready(&self) -> bool {
-        // ARMv8-M adds a disabled bit; we indicate that we are ready to
-        // proceed with a stimulus write if the port is either ready (bit 0) or
-        // disabled (bit 1).
-        unsafe { ptr::read_volatile(self.register.get()) & 0b11 != 0 }
-    }
-}
-
-/// The possible local timestamp options.
-#[derive(Debug, Eq, PartialEq, Copy, Clone)]
-#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
-pub enum LocalTimestampOptions {
-    /// Disable local timestamps.
-    Disabled,
-    /// Enable local timestamps and use no prescaling.
-    Enabled,
-    /// Enable local timestamps and set the prescaler to divide the
-    /// reference clock by 4.
-    EnabledDiv4,
-    /// Enable local timestamps and set the prescaler to divide the
-    /// reference clock by 16.
-    EnabledDiv16,
-    /// Enable local timestamps and set the prescaler to divide the
-    /// reference clock by 64.
-    EnabledDiv64,
-}
-
-#[cfg(feature = "std")]
-impl core::convert::TryFrom<u8> for LocalTimestampOptions {
-    type Error = ();
-
-    /// Converts an integer value to an enabled [LocalTimestampOptions]
-    /// variant. Accepted values are: 1, 4, 16, 64. Any other value
-    /// yields `Err(())`.
-    #[inline]
-    fn try_from(value: u8) -> Result<Self, Self::Error> {
-        match value {
-            1 => Ok(Self::Enabled),
-            4 => Ok(Self::EnabledDiv4),
-            16 => Ok(Self::EnabledDiv16),
-            64 => Ok(Self::EnabledDiv64),
-            _ => Err(()),
-        }
-    }
-}
-
-/// The possible global timestamp options.
-#[derive(Debug, Eq, PartialEq, Copy, Clone)]
-pub enum GlobalTimestampOptions {
-    /// Disable global timestamps.
-    Disabled,
-    /// Generate a global timestamp approximately every 128 cycles.
-    Every128Cycles,
-    /// Generate a global timestamp approximately every 8921 cycles.
-    Every8192Cycles,
-    /// Generate a global timestamp after every packet, if the output FIFO is empty.
-    EveryPacket,
-}
-
-/// The possible clock sources for timestamp counters.
-#[derive(Debug, Eq, PartialEq, Copy, Clone)]
-pub enum TimestampClkSrc {
-    /// Clock timestamp counters using the system processor clock.
-    SystemClock,
-    /// Clock timestamp counters using the asynchronous clock from the
-    /// TPIU interface.
-    ///
-    /// NOTE: The timestamp counter is held in reset while the output
-    /// line is idle.
-    AsyncTPIU,
-}
-
-/// Available settings for the ITM peripheral.
-#[derive(Debug, Eq, PartialEq, Copy, Clone)]
-pub struct ITMSettings {
-    /// Whether to enable ITM.
-    pub enable: bool,
-    /// Whether DWT packets should be forwarded to ITM.
-    pub forward_dwt: bool,
-    /// The local timestamp options that should be applied.
-    pub local_timestamps: LocalTimestampOptions,
-    /// The global timestamp options that should be applied.
-    pub global_timestamps: GlobalTimestampOptions,
-    /// The trace bus ID to use when multi-trace sources are in use.
-    /// `None` specifies that only a single trace source is in use and
-    /// has the same effect as `Some(0)`.
-    pub bus_id: Option<u8>,
-    /// The clock that should increase timestamp counters.
-    pub timestamp_clk_src: TimestampClkSrc,
-}
-
-impl ITM {
-    /// Removes the software lock on the ITM.
-    #[inline]
-    pub fn unlock(&mut self) {
-        // NOTE(unsafe) atomic write to a stateless, write-only register
-        unsafe { self.lar.write(0xC5AC_CE55) }
-    }
-
-    /// Configures the ITM with the passed [ITMSettings].
-    #[inline]
-    pub fn configure(&mut self, settings: ITMSettings) {
-        unsafe {
-            self.tcr.modify(|mut r| {
-                r.set_itmena(settings.enable);
-                r.set_tsena(settings.local_timestamps != LocalTimestampOptions::Disabled);
-                r.set_txena(settings.forward_dwt);
-                r.set_tsprescale(match settings.local_timestamps {
-                    LocalTimestampOptions::Disabled | LocalTimestampOptions::Enabled => 0b00,
-                    LocalTimestampOptions::EnabledDiv4 => 0b10,
-                    LocalTimestampOptions::EnabledDiv16 => 0b10,
-                    LocalTimestampOptions::EnabledDiv64 => 0b11,
-                });
-                r.set_gtsfreq(match settings.global_timestamps {
-                    GlobalTimestampOptions::Disabled => 0b00,
-                    GlobalTimestampOptions::Every128Cycles => 0b01,
-                    GlobalTimestampOptions::Every8192Cycles => 0b10,
-                    GlobalTimestampOptions::EveryPacket => 0b11,
-                });
-                r.set_swoena(match settings.timestamp_clk_src {
-                    TimestampClkSrc::SystemClock => false,
-                    TimestampClkSrc::AsyncTPIU => true,
-                });
-                r.set_tracebusid(settings.bus_id.unwrap_or(0));
-
-                r
-            });
-        }
-    }
-}