From 660e0f25f258a4c8089347ae5e0f6f15e3b5beb4 Mon Sep 17 00:00:00 2001
From: Dario Nieuwenhuis <dirbaio@dirbaio.net>
Date: Thu, 16 May 2024 22:10:25 +0200
Subject: [PATCH] Check VTOR set is successful. Catches M0 without VTOR.

---
 teleprobe/src/run.rs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/teleprobe/src/run.rs b/teleprobe/src/run.rs
index b0f690e..df54eab 100644
--- a/teleprobe/src/run.rs
+++ b/teleprobe/src/run.rs
@@ -197,6 +197,13 @@ impl Runner {
                 // Write VTOR
                 // NOTE this DOES NOT play nice with the softdevice.
                 core.write_word_32(0xE000ED08, vector_table.location)?;
+                let got_vtor = core.read_word_32(0xE000ED08)?;
+                if got_vtor != vector_table.location {
+                    panic!(
+                        "failed to set VTOR! got {:08x} want {:08x}",
+                        got_vtor, vector_table.location
+                    )
+                }
 
                 // Hacks to get the softdevice to think we're doing a cold boot here.
                 //core.write_32(0x2000_005c, &[0]).unwrap();