Merge branch 'embassy-rs:main' into main

1 files changed, 5 insertions, 0 deletions

diff --git a/examples/stm32f3/src/bin/multiprio.rs b/examples/stm32f3/src/bin/multiprio.rs
index 328447210..87830b416 100644
--- a/examples/stm32f3/src/bin/multiprio.rs
+++ b/examples/stm32f3/src/bin/multiprio.rs
@@ -127,6 +127,11 @@ fn main() -> ! {
 
     let _p = embassy_stm32::init(Default::default());
 
+    // STM32s don’t have any interrupts exclusively for software use, but they can all be triggered by software as well as
+    // by the peripheral, so we can just use any free interrupt vectors which aren’t used by the rest of your application.
+    // In this case we’re using UART4 and UART5, but there’s nothing special about them. Any otherwise unused interrupt
+    // vector would work exactly the same.
+
     // High-priority executor: UART4, priority level 6
     interrupt::UART4.set_priority(Priority::P6);
     let spawner = EXECUTOR_HIGH.start(interrupt::UART4);