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-rw-r--r--src/peripheral/dcb.rs81
1 files changed, 0 insertions, 81 deletions
diff --git a/src/peripheral/dcb.rs b/src/peripheral/dcb.rs
deleted file mode 100644
index a4db9fc..0000000
--- a/src/peripheral/dcb.rs
+++ /dev/null
@@ -1,81 +0,0 @@
-//! Debug Control Block
-
-use volatile_register::{RW, WO};
-
-use crate::peripheral::DCB;
-use core::ptr;
-
-const DCB_DEMCR_TRCENA: u32 = 1 << 24;
-const DCB_DEMCR_MON_EN: u32 = 1 << 16;
-
-/// Register block
-#[repr(C)]
-pub struct RegisterBlock {
- /// Debug Halting Control and Status
- pub dhcsr: RW<u32>,
- /// Debug Core Register Selector
- pub dcrsr: WO<u32>,
- /// Debug Core Register Data
- pub dcrdr: RW<u32>,
- /// Debug Exception and Monitor Control
- pub demcr: RW<u32>,
-}
-
-impl DCB {
- /// Enables TRACE. This is for example required by the
- /// `peripheral::DWT` cycle counter to work properly.
- /// As by STM documentation, this flag is not reset on
- /// soft-reset, only on power reset.
- ///
- /// Note: vendor-specific registers may have to be set to completely
- /// enable tracing. For example, on the STM32F401RE, `TRACE_MODE`
- /// and `TRACE_IOEN` must be configured in `DBGMCU_CR` register.
- #[inline]
- pub fn enable_trace(&mut self) {
- // set bit 24 / TRCENA
- unsafe {
- self.demcr.modify(|w| w | DCB_DEMCR_TRCENA);
- }
- }
-
- /// Disables TRACE. See `DCB::enable_trace()` for more details
- #[inline]
- pub fn disable_trace(&mut self) {
- // unset bit 24 / TRCENA
- unsafe {
- self.demcr.modify(|w| w & !DCB_DEMCR_TRCENA);
- }
- }
-
- /// Enables the [`DebugMonitor`](crate::peripheral::scb::Exception::DebugMonitor) exception
- #[inline]
- pub fn enable_debug_monitor(&mut self) {
- unsafe {
- self.demcr.modify(|w| w | DCB_DEMCR_MON_EN);
- }
- }
-
- /// Disables the [`DebugMonitor`](crate::peripheral::scb::Exception::DebugMonitor) exception
- #[inline]
- pub fn disable_debug_monitor(&mut self) {
- unsafe {
- self.demcr.modify(|w| w & !DCB_DEMCR_MON_EN);
- }
- }
-
- /// Is there a debugger attached? (see note)
- ///
- /// Note: This function is [reported not to
- /// work](http://web.archive.org/web/20180821191012/https://community.nxp.com/thread/424925#comment-782843)
- /// on Cortex-M0 devices. Per the ARM v6-M Architecture Reference Manual, "Access to the DHCSR
- /// from software running on the processor is IMPLEMENTATION DEFINED". Indeed, from the
- /// [Cortex-M0+ r0p1 Technical Reference Manual](http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0484c/BABJHEIG.html), "Note Software cannot access the debug registers."
- #[inline]
- pub fn is_debugger_attached() -> bool {
- unsafe {
- // do an 8-bit read of the 32-bit DHCSR register, and get the LSB
- let value = ptr::read_volatile(Self::PTR as *const u8);
- value & 0x1 == 1
- }
- }
-}