From 1e46e9675256cdc1466ce80b5bf5c9650bf64bff Mon Sep 17 00:00:00 2001
From: rubenasplund <ruben.asplund@hotmail.com>
Date: Sat, 5 Dec 2020 19:09:25 +0100
Subject: [PATCH] rtt_timing done
---
examples/rtt_timing.rs | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/examples/rtt_timing.rs b/examples/rtt_timing.rs
index 878fed2..6e077ee 100644
--- a/examples/rtt_timing.rs
+++ b/examples/rtt_timing.rs
@@ -212,6 +212,10 @@ fn timed_loop() -> (u32, u32) {
// https://developer.arm.com/documentation/ddi0439/b/Data-Watchpoint-and-Trace-Unit/DWT-Programmers-Model
//
// [Your answer here]
+// With movw and movt the value 0xe0001004 is loaded to register 1.
+// The address to DWT::get_cycle_count() is the value 0xe0001004.
+// Then with the ldr, the value of the DWT::get_cycle_count() is loaded into register r0.
+//
//
// Now check your answer by dumping the registers
// (gdb) info registers
--
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