From 245bc4f3d85d4cd5734f98fa3b1056e54e2b32de Mon Sep 17 00:00:00 2001
From: Liam Kinne <liam@kinne.io>
Date: Tue, 21 Jan 2025 05:41:34 +1000
Subject: [PATCH] clear VTOR before launch

---
 src/dfu.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/dfu.rs b/src/dfu.rs
index be52cc9..8028800 100644
--- a/src/dfu.rs
+++ b/src/dfu.rs
@@ -162,6 +162,12 @@ impl DfuFlash {
 
             while f.sr.read().bsy().bit_is_set() {}
 
+            // reset VTOR preventing interrupts after reset jumping to old
+            // addresses
+            unsafe {
+                (*cortex_m::peripheral::SCB::PTR).vtor.write(0x0800_0000);
+            };
+
             // launch new firmware
             f.cr.modify(|_, w| w.obl_launch().set_bit());
         });